[PATCH 0/6] shmem: Add user and group quota support for tmpfs

[PATCH 0/6] shmem: Add user and group quota support for tmpfs

[cem]

From: Carlos Maiolino <cmaiolino@redhat.com>

Hi folks. this work has been done originally by Lukas, but he left the company,
so I'm taking over his work from where he left it of. This series is virtually
done, and he had updated it with comments from the last version, but, I'm
initially posting it as a RFC because it's been a while since he posted the
last version.
Most of what I did here was rebase his last work on top of current Linus's tree.

Honza, there is one patch from you in this series, which I believe you had it
suggested to Lukas on a previous version.

The original cover-letter follows...

people have been asking for quota support in tmpfs many times in the past
mostly to avoid one malicious user, or misbehaving user/program to consume
all of the system memory. This has been partially solved with the size
mount option, but some problems still prevail.

One of the problems is the fact that /dev/shm is still generally unprotected
with this and another is administration overhead of managing multiple tmpfs
mounts and lack of more fine grained control.

Quota support can solve all these problems in a somewhat standard way
people are already familiar with from regular file systems. It can give us
more fine grained control over how much memory user/groups can consume.
Additionally it can also control number of inodes and with special quota
mount options introduced with a second patch we can set global limits
allowing us to replace the size mount option with quota entirely.

Currently the standard userspace quota tools (quota, xfs_quota) are only
using quotactl ioctl which is expecting a block device. I patched quota [1]
and xfs_quota [2] to use quotactl_fd in case we want to run the tools on
mount point directory to work nicely with tmpfs.

The implementation was tested on patched version of xfstests [3].


Jan Kara (1):
  quota: Check presence of quota operation structures instead of
    ->quota_read and ->quota_write callbacks

Lukas Czerner (5):
  shmem: make shmem_inode_acct_block() return error
  shmem: make shmem_get_inode() return ERR_PTR instead of NULL
  shmem: prepare shmem quota infrastructure
  shmem: quota support
  Add default quota limit mount options

 Documentation/filesystems/tmpfs.rst |  28 ++
 fs/Kconfig                          |  12 +
 fs/quota/dquot.c                    |   2 +-
 include/linux/shmem_fs.h            |  25 ++
 include/uapi/linux/quota.h          |   1 +
 mm/Makefile                         |   2 +-
 mm/shmem.c                          | 452 +++++++++++++++++++++-------
 mm/shmem_quota.c                    | 327 ++++++++++++++++++++
 8 files changed, 740 insertions(+), 109 deletions(-)
 create mode 100644 mm/shmem_quota.c

-- 
2.30.2

[PATCH 1/6] shmem: make shmem_inode_acct_block() return error

[cem]

From: Lukas Czerner <lczerner@redhat.com>

Make shmem_inode_acct_block() return proper error code instead of bool.
This will be useful later when we introduce quota support.

There should be no functional change.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
---
 mm/shmem.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/mm/shmem.c b/mm/shmem.c
index 448f393d8ab2b..0e63ea5f6ce69 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -198,13 +198,14 @@ static inline void shmem_unacct_blocks(unsigned long flags, long pages)
 		vm_unacct_memory(pages * VM_ACCT(PAGE_SIZE));
 }
 
-static inline bool shmem_inode_acct_block(struct inode *inode, long pages)
+static inline int shmem_inode_acct_block(struct inode *inode, long pages)
 {
 	struct shmem_inode_info *info = SHMEM_I(inode);
 	struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb);
+	int err = -ENOSPC;
 
 	if (shmem_acct_block(info->flags, pages))
-		return false;
+		return err;
 
 	if (sbinfo->max_blocks) {
 		if (percpu_counter_compare(&sbinfo->used_blocks,
@@ -213,11 +214,11 @@ static inline bool shmem_inode_acct_block(struct inode *inode, long pages)
 		percpu_counter_add(&sbinfo->used_blocks, pages);
 	}
 
-	return true;
+	return 0;
 
 unacct:
 	shmem_unacct_blocks(info->flags, pages);
-	return false;
+	return err;
 }
 
 static inline void shmem_inode_unacct_blocks(struct inode *inode, long pages)
@@ -369,7 +370,7 @@ bool shmem_charge(struct inode *inode, long pages)
 	struct shmem_inode_info *info = SHMEM_I(inode);
 	unsigned long flags;
 
-	if (!shmem_inode_acct_block(inode, pages))
+	if (shmem_inode_acct_block(inode, pages))
 		return false;
 
 	/* nrpages adjustment first, then shmem_recalc_inode() when balanced */
@@ -1589,7 +1590,8 @@ static struct folio *shmem_alloc_and_acct_folio(gfp_t gfp, struct inode *inode,
 		huge = false;
 	nr = huge ? HPAGE_PMD_NR : 1;
 
-	if (!shmem_inode_acct_block(inode, nr))
+	err = shmem_inode_acct_block(inode, nr);
+	if (err)
 		goto failed;
 
 	if (huge)
@@ -2433,7 +2435,7 @@ int shmem_mfill_atomic_pte(struct mm_struct *dst_mm,
 	int ret;
 	pgoff_t max_off;
 
-	if (!shmem_inode_acct_block(inode, 1)) {
+	if (shmem_inode_acct_block(inode, 1)) {
 		/*
 		 * We may have got a page, returned -ENOENT triggering a retry,
 		 * and now we find ourselves with -ENOMEM. Release the page, to
-- 
2.30.2

Re: [PATCH 1/6] shmem: make shmem_inode_acct_block() return error

[Jan Kara]

On Mon 03-04-23 10:47:54, cem@kernel.org wrote:
> From: Lukas Czerner <lczerner@redhat.com>
> 
> Make shmem_inode_acct_block() return proper error code instead of bool.
> This will be useful later when we introduce quota support.
> 
> There should be no functional change.
> 
> Signed-off-by: Lukas Czerner <lczerner@redhat.com>
> Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>

Looks good to me, except one minor nit.

> @@ -1589,7 +1590,8 @@ static struct folio *shmem_alloc_and_acct_folio(gfp_t gfp, struct inode *inode,
>  		huge = false;
>  	nr = huge ? HPAGE_PMD_NR : 1;
>  
> -	if (!shmem_inode_acct_block(inode, nr))
> +	err = shmem_inode_acct_block(inode, nr);
> +	if (err)
>  		goto failed;
>  
>  	if (huge)

The initialization of 'err' in this function is unused now so it can be
dropped.

								Honza

-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR

[PATCH 2/6] shmem: make shmem_get_inode() return ERR_PTR instead of NULL

[cem]

From: Lukas Czerner <lczerner@redhat.com>

Make shmem_get_inode() return ERR_PTR instead of NULL on error. This will be
useful later when we introduce quota support.

There should be no functional change.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
---
 mm/shmem.c | 205 +++++++++++++++++++++++++++++------------------------
 1 file changed, 114 insertions(+), 91 deletions(-)

diff --git a/mm/shmem.c b/mm/shmem.c
index 0e63ea5f6ce69..88e13930fc013 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2354,65 +2354,71 @@ static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block
 	struct shmem_inode_info *info;
 	struct shmem_sb_info *sbinfo = SHMEM_SB(sb);
 	ino_t ino;
+	int err;
+
+	err = shmem_reserve_inode(sb, &ino);
+	if (err)
+		return ERR_PTR(err);
 
-	if (shmem_reserve_inode(sb, &ino))
-		return NULL;
 
 	inode = new_inode(sb);
-	if (inode) {
-		inode->i_ino = ino;
-		inode_init_owner(idmap, inode, dir, mode);
-		inode->i_blocks = 0;
-		inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
-		inode->i_generation = get_random_u32();
-		info = SHMEM_I(inode);
-		memset(info, 0, (char *)inode - (char *)info);
-		spin_lock_init(&info->lock);
-		atomic_set(&info->stop_eviction, 0);
-		info->seals = F_SEAL_SEAL;
-		info->flags = flags & VM_NORESERVE;
-		info->i_crtime = inode->i_mtime;
-		info->fsflags = (dir == NULL) ? 0 :
-			SHMEM_I(dir)->fsflags & SHMEM_FL_INHERITED;
-		if (info->fsflags)
-			shmem_set_inode_flags(inode, info->fsflags);
-		INIT_LIST_HEAD(&info->shrinklist);
-		INIT_LIST_HEAD(&info->swaplist);
-		simple_xattrs_init(&info->xattrs);
-		cache_no_acl(inode);
-		mapping_set_large_folios(inode->i_mapping);
-
-		switch (mode & S_IFMT) {
-		default:
-			inode->i_op = &shmem_special_inode_operations;
-			init_special_inode(inode, mode, dev);
-			break;
-		case S_IFREG:
-			inode->i_mapping->a_ops = &shmem_aops;
-			inode->i_op = &shmem_inode_operations;
-			inode->i_fop = &shmem_file_operations;
-			mpol_shared_policy_init(&info->policy,
-						 shmem_get_sbmpol(sbinfo));
-			break;
-		case S_IFDIR:
-			inc_nlink(inode);
-			/* Some things misbehave if size == 0 on a directory */
-			inode->i_size = 2 * BOGO_DIRENT_SIZE;
-			inode->i_op = &shmem_dir_inode_operations;
-			inode->i_fop = &simple_dir_operations;
-			break;
-		case S_IFLNK:
-			/*
-			 * Must not load anything in the rbtree,
-			 * mpol_free_shared_policy will not be called.
-			 */
-			mpol_shared_policy_init(&info->policy, NULL);
-			break;
-		}
 
-		lockdep_annotate_inode_mutex_key(inode);
-	} else
+	if (!inode) {
 		shmem_free_inode(sb);
+		return ERR_PTR(-ENOSPC);
+	}
+
+	inode->i_ino = ino;
+	inode_init_owner(idmap, inode, dir, mode);
+	inode->i_blocks = 0;
+	inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
+	inode->i_generation = get_random_u32();
+	info = SHMEM_I(inode);
+	memset(info, 0, (char *)inode - (char *)info);
+	spin_lock_init(&info->lock);
+	atomic_set(&info->stop_eviction, 0);
+	info->seals = F_SEAL_SEAL;
+	info->flags = flags & VM_NORESERVE;
+	info->i_crtime = inode->i_mtime;
+	info->fsflags = (dir == NULL) ? 0 :
+		SHMEM_I(dir)->fsflags & SHMEM_FL_INHERITED;
+	if (info->fsflags)
+		shmem_set_inode_flags(inode, info->fsflags);
+	INIT_LIST_HEAD(&info->shrinklist);
+	INIT_LIST_HEAD(&info->swaplist);
+	simple_xattrs_init(&info->xattrs);
+	cache_no_acl(inode);
+	mapping_set_large_folios(inode->i_mapping);
+
+	switch (mode & S_IFMT) {
+	default:
+		inode->i_op = &shmem_special_inode_operations;
+		init_special_inode(inode, mode, dev);
+		break;
+	case S_IFREG:
+		inode->i_mapping->a_ops = &shmem_aops;
+		inode->i_op = &shmem_inode_operations;
+		inode->i_fop = &shmem_file_operations;
+		mpol_shared_policy_init(&info->policy,
+					 shmem_get_sbmpol(sbinfo));
+		break;
+	case S_IFDIR:
+		inc_nlink(inode);
+		/* Some things misbehave if size == 0 on a directory */
+		inode->i_size = 2 * BOGO_DIRENT_SIZE;
+		inode->i_op = &shmem_dir_inode_operations;
+		inode->i_fop = &simple_dir_operations;
+		break;
+	case S_IFLNK:
+		/*
+		 * Must not load anything in the rbtree,
+		 * mpol_free_shared_policy will not be called.
+		 */
+		mpol_shared_policy_init(&info->policy, NULL);
+		break;
+	}
+
+	lockdep_annotate_inode_mutex_key(inode);
 	return inode;
 }
 
@@ -2927,27 +2933,30 @@ shmem_mknod(struct mnt_idmap *idmap, struct inode *dir,
 	    struct dentry *dentry, umode_t mode, dev_t dev)
 {
 	struct inode *inode;
-	int error = -ENOSPC;
+	int error;
 
 	inode = shmem_get_inode(idmap, dir->i_sb, dir, mode, dev, VM_NORESERVE);
-	if (inode) {
-		error = simple_acl_create(dir, inode);
-		if (error)
-			goto out_iput;
-		error = security_inode_init_security(inode, dir,
-						     &dentry->d_name,
-						     shmem_initxattrs, NULL);
-		if (error && error != -EOPNOTSUPP)
-			goto out_iput;
 
-		error = 0;
-		dir->i_size += BOGO_DIRENT_SIZE;
-		dir->i_ctime = dir->i_mtime = current_time(dir);
-		inode_inc_iversion(dir);
-		d_instantiate(dentry, inode);
-		dget(dentry); /* Extra count - pin the dentry in core */
-	}
+	if (IS_ERR(inode))
+		return PTR_ERR(inode);
+
+	error = simple_acl_create(dir, inode);
+	if (error)
+		goto out_iput;
+	error = security_inode_init_security(inode, dir,
+					     &dentry->d_name,
+					     shmem_initxattrs, NULL);
+	if (error && error != -EOPNOTSUPP)
+		goto out_iput;
+
+	error = 0;
+	dir->i_size += BOGO_DIRENT_SIZE;
+	dir->i_ctime = dir->i_mtime = current_time(dir);
+	inode_inc_iversion(dir);
+	d_instantiate(dentry, inode);
+	dget(dentry); /* Extra count - pin the dentry in core */
 	return error;
+
 out_iput:
 	iput(inode);
 	return error;
@@ -2958,21 +2967,24 @@ shmem_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
 	      struct file *file, umode_t mode)
 {
 	struct inode *inode;
-	int error = -ENOSPC;
+	int error;
 
 	inode = shmem_get_inode(idmap, dir->i_sb, dir, mode, 0, VM_NORESERVE);
-	if (inode) {
-		error = security_inode_init_security(inode, dir,
-						     NULL,
-						     shmem_initxattrs, NULL);
-		if (error && error != -EOPNOTSUPP)
-			goto out_iput;
-		error = simple_acl_create(dir, inode);
-		if (error)
-			goto out_iput;
-		d_tmpfile(file, inode);
-	}
+
+	if (IS_ERR(inode))
+		return PTR_ERR(inode);
+
+	error = security_inode_init_security(inode, dir,
+					     NULL,
+					     shmem_initxattrs, NULL);
+	if (error && error != -EOPNOTSUPP)
+		goto out_iput;
+	error = simple_acl_create(dir, inode);
+	if (error)
+		goto out_iput;
+	d_tmpfile(file, inode);
 	return finish_open_simple(file, error);
+
 out_iput:
 	iput(inode);
 	return error;
@@ -3146,8 +3158,9 @@ static int shmem_symlink(struct mnt_idmap *idmap, struct inode *dir,
 
 	inode = shmem_get_inode(idmap, dir->i_sb, dir, S_IFLNK | 0777, 0,
 				VM_NORESERVE);
-	if (!inode)
-		return -ENOSPC;
+
+	if (IS_ERR(inode))
+		return PTR_ERR(inode);
 
 	error = security_inode_init_security(inode, dir, &dentry->d_name,
 					     shmem_initxattrs, NULL);
@@ -3762,12 +3775,13 @@ static int shmem_fill_super(struct super_block *sb, struct fs_context *fc)
 	struct shmem_options *ctx = fc->fs_private;
 	struct inode *inode;
 	struct shmem_sb_info *sbinfo;
+	int error = -ENOMEM;
 
 	/* Round up to L1_CACHE_BYTES to resist false sharing */
 	sbinfo = kzalloc(max((int)sizeof(struct shmem_sb_info),
 				L1_CACHE_BYTES), GFP_KERNEL);
 	if (!sbinfo)
-		return -ENOMEM;
+		return error;
 
 	sb->s_fs_info = sbinfo;
 
@@ -3829,8 +3843,10 @@ static int shmem_fill_super(struct super_block *sb, struct fs_context *fc)
 
 	inode = shmem_get_inode(&nop_mnt_idmap, sb, NULL, S_IFDIR | sbinfo->mode, 0,
 				VM_NORESERVE);
-	if (!inode)
+	if (IS_ERR(inode)) {
+		error = PTR_ERR(inode);
 		goto failed;
+	}
 	inode->i_uid = sbinfo->uid;
 	inode->i_gid = sbinfo->gid;
 	sb->s_root = d_make_root(inode);
@@ -3840,7 +3856,7 @@ static int shmem_fill_super(struct super_block *sb, struct fs_context *fc)
 
 failed:
 	shmem_put_super(sb);
-	return -ENOMEM;
+	return error;
 }
 
 static int shmem_get_tree(struct fs_context *fc)
@@ -4209,10 +4225,16 @@ EXPORT_SYMBOL_GPL(shmem_truncate_range);
 #define shmem_vm_ops				generic_file_vm_ops
 #define shmem_anon_vm_ops			generic_file_vm_ops
 #define shmem_file_operations			ramfs_file_operations
-#define shmem_get_inode(idmap, sb, dir, mode, dev, flags) ramfs_get_inode(sb, dir, mode, dev)
 #define shmem_acct_size(flags, size)		0
 #define shmem_unacct_size(flags, size)		do {} while (0)
 
+static inline struct inode *shmem_get_inode(struct super_block *sb, struct inode *dir,
+					    umode_t mode, dev_t dev, unsigned long flags)
+{
+	struct inode *inode = ramfs_get_inode(sb, dir, mode, dev);
+	return inode ? inode : ERR_PTR(-ENOSPC);
+}
+
 #endif /* CONFIG_SHMEM */
 
 /* common code */
@@ -4237,9 +4259,10 @@ static struct file *__shmem_file_setup(struct vfsmount *mnt, const char *name, l
 
 	inode = shmem_get_inode(&nop_mnt_idmap, mnt->mnt_sb, NULL,
 				S_IFREG | S_IRWXUGO, 0, flags);
-	if (unlikely(!inode)) {
+
+	if (IS_ERR(inode)) {
 		shmem_unacct_size(flags, size);
-		return ERR_PTR(-ENOSPC);
+		return ERR_CAST(inode);
 	}
 	inode->i_flags |= i_flags;
 	inode->i_size = size;
-- 
2.30.2

Re: [PATCH 2/6] shmem: make shmem_get_inode() return ERR_PTR instead of NULL

[Jan Kara]

On Mon 03-04-23 10:47:55, cem@kernel.org wrote:
> From: Lukas Czerner <lczerner@redhat.com>
> 
> Make shmem_get_inode() return ERR_PTR instead of NULL on error. This will be
> useful later when we introduce quota support.
> 
> There should be no functional change.
> 
> Signed-off-by: Lukas Czerner <lczerner@redhat.com>
> Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>

One comment below:

> @@ -2958,21 +2967,24 @@ shmem_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
>  	      struct file *file, umode_t mode)
>  {
>  	struct inode *inode;
> -	int error = -ENOSPC;
> +	int error;
>  
>  	inode = shmem_get_inode(idmap, dir->i_sb, dir, mode, 0, VM_NORESERVE);
> -	if (inode) {
> -		error = security_inode_init_security(inode, dir,
> -						     NULL,
> -						     shmem_initxattrs, NULL);
> -		if (error && error != -EOPNOTSUPP)
> -			goto out_iput;
> -		error = simple_acl_create(dir, inode);
> -		if (error)
> -			goto out_iput;
> -		d_tmpfile(file, inode);
> -	}
> +
> +	if (IS_ERR(inode))
> +		return PTR_ERR(inode);

This doesn't look correct. Previously, we've called
finish_open_simple(file, error), now you just return error... Otherwise the
patch looks good to me.

								Honza
-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR

Re: [PATCH 2/6] shmem: make shmem_get_inode() return ERR_PTR instead of NULL

[Carlos Maiolino]

Hi Honza.

My apologies it took a while to get back to you on this one, I was accumulating
reviews before running through all of them.


> >  	inode = shmem_get_inode(idmap, dir->i_sb, dir, mode, 0, VM_NORESERVE);
> > -	if (inode) {
> > -		error = security_inode_init_security(inode, dir,
> > -						     NULL,
> > -						     shmem_initxattrs, NULL);
> > -		if (error && error != -EOPNOTSUPP)
> > -			goto out_iput;
> > -		error = simple_acl_create(dir, inode);
> > -		if (error)
> > -			goto out_iput;
> > -		d_tmpfile(file, inode);
> > -	}
> > +
> > +	if (IS_ERR(inode))
> > +		return PTR_ERR(inode);
> 
> This doesn't look correct. Previously, we've called
> finish_open_simple(file, error), now you just return error... Otherwise the
> patch looks good to me.

I see what you mean. But, finish_open_simple() simply does:

	if (error)
		return error;

So, calling it with a non-zero value for error at most will just add another
function call into the stack.
I'm not opposed to still call finish_open_simple() but I don't think it adds
anything.

If you prefer it being called. I thought about adding a new label, something
like:

	if (IS_ERR(inode))
		goto err_out;
	.
	.
	.
	d_tmpfile(file, inode)
err_out:
	return finish_open_simple(file, error)
.
.
.

Would it work for you?

> 
> 								Honza
> --
> Jan Kara <jack@suse.com>
> SUSE Labs, CR

-- 
Carlos Maiolino

Re: [PATCH 2/6] shmem: make shmem_get_inode() return ERR_PTR instead of NULL

[Jan Kara]

Hi!

On Tue 11-04-23 09:47:08, Carlos Maiolino wrote:
> My apologies it took a while to get back to you on this one, I was
> accumulating reviews before running through all of them.

Sure, that is fine.

> > >  	inode = shmem_get_inode(idmap, dir->i_sb, dir, mode, 0, VM_NORESERVE);
> > > -	if (inode) {
> > > -		error = security_inode_init_security(inode, dir,
> > > -						     NULL,
> > > -						     shmem_initxattrs, NULL);
> > > -		if (error && error != -EOPNOTSUPP)
> > > -			goto out_iput;
> > > -		error = simple_acl_create(dir, inode);
> > > -		if (error)
> > > -			goto out_iput;
> > > -		d_tmpfile(file, inode);
> > > -	}
> > > +
> > > +	if (IS_ERR(inode))
> > > +		return PTR_ERR(inode);
> > 
> > This doesn't look correct. Previously, we've called
> > finish_open_simple(file, error), now you just return error... Otherwise the
> > patch looks good to me.
> 
> I see what you mean. But, finish_open_simple() simply does:
> 
> 	if (error)
> 		return error;
> 
> So, calling it with a non-zero value for error at most will just add another
> function call into the stack.

I see, I didn't look inside finish_open_simple() :). Well, it is at least
inline function so actually no function call.

> I'm not opposed to still call finish_open_simple() but I don't think it adds
> anything.

Yeah, the value of the call is questionable but given it takes 'error'
argument only so that it could do that if (error) return error; dance, it
seems to be very much expected it is called in error cases as well.

> If you prefer it being called. I thought about adding a new label, something
> like:
> 
> 	if (IS_ERR(inode))
> 		goto err_out;
> 	.
> 	.
> 	.
> 	d_tmpfile(file, inode)
> err_out:
> 	return finish_open_simple(file, error)
> .
> .
> .
> 
> Would it work for you?

Yeah, I'd prefer we keep calling finish_open_simple(). Adding a label for
it is fine by me.

								Honza
-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR

Re: [PATCH 2/6] shmem: make shmem_get_inode() return ERR_PTR instead of NULL

[Carlos Maiolino]

On Tue, Apr 11, 2023 at 10:14:45AM +0200, Jan Kara wrote:
> 
> Hi!
> 
> On Tue 11-04-23 09:47:08, Carlos Maiolino wrote:
> > My apologies it took a while to get back to you on this one, I was
> > accumulating reviews before running through all of them.
> 
> Sure, that is fine.
> 
> > > >  	inode = shmem_get_inode(idmap, dir->i_sb, dir, mode, 0, VM_NORESERVE);
> > > > -	if (inode) {
> > > > -		error = security_inode_init_security(inode, dir,
> > > > -						     NULL,
> > > > -						     shmem_initxattrs, NULL);
> > > > -		if (error && error != -EOPNOTSUPP)
> > > > -			goto out_iput;
> > > > -		error = simple_acl_create(dir, inode);
> > > > -		if (error)
> > > > -			goto out_iput;
> > > > -		d_tmpfile(file, inode);
> > > > -	}
> > > > +
> > > > +	if (IS_ERR(inode))
> > > > +		return PTR_ERR(inode);
> > >
> > > This doesn't look correct. Previously, we've called
> > > finish_open_simple(file, error), now you just return error... Otherwise the
> > > patch looks good to me.
> >
> > I see what you mean. But, finish_open_simple() simply does:
> >
> > 	if (error)
> > 		return error;
> >
> > So, calling it with a non-zero value for error at most will just add another
> > function call into the stack.
> 
> I see, I didn't look inside finish_open_simple() :). Well, it is at least
> inline function so actually no function call.

Great, I didn't notice it's an inline function :D

.
.
.
> Yeah, I'd prefer we keep calling finish_open_simple(). Adding a label for
> it is fine by me.

Ok, I'm updating the series today, hopefully I'll send the new version today or
tomorrow.

Thanks for the reviews!

-- 
Carlos Maiolino

Re: [PATCH 2/6] shmem: make shmem_get_inode() return ERR_PTR instead of NULL

[kernel test robot]

Hi,

kernel test robot noticed the following build errors:

[auto build test ERROR on linus/master]
[also build test ERROR on v6.3-rc5]
[cannot apply to akpm-mm/mm-everything next-20230403]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/cem-kernel-org/shmem-make-shmem_inode_acct_block-return-error/20230403-165022
patch link:    https://lore.kernel.org/r/20230403084759.884681-3-cem%40kernel.org
patch subject: [PATCH 2/6] shmem: make shmem_get_inode() return ERR_PTR instead of NULL
config: arm-randconfig-r046-20230403 (https://download.01.org/0day-ci/archive/20230404/202304040420.J4BUN9E6-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://github.com/intel-lab-lkp/linux/commit/98aa926ee22a768f6a2dc8b0b897d018fc47497e
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review cem-kernel-org/shmem-make-shmem_inode_acct_block-return-error/20230403-165022
        git checkout 98aa926ee22a768f6a2dc8b0b897d018fc47497e
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304040420.J4BUN9E6-lkp@intel.com/

All errors (new ones prefixed by >>):

>> mm/shmem.c:4261:29: error: too many arguments to function call, expected 5, have 6
                                   S_IFREG | S_IRWXUGO, 0, flags);
                                                           ^~~~~
   mm/shmem.c:4231:29: note: 'shmem_get_inode' declared here
   static inline struct inode *shmem_get_inode(struct super_block *sb, struct inode *dir,
                               ^
   1 error generated.


vim +4261 mm/shmem.c

^1da177e4c3f41 Linus Torvalds    2005-04-16  4241  
703321b60b605b Matthew Auld      2017-10-06  4242  static struct file *__shmem_file_setup(struct vfsmount *mnt, const char *name, loff_t size,
c7277090927a5e Eric Paris        2013-12-02  4243  				       unsigned long flags, unsigned int i_flags)
^1da177e4c3f41 Linus Torvalds    2005-04-16  4244  {
^1da177e4c3f41 Linus Torvalds    2005-04-16  4245  	struct inode *inode;
93dec2da7b2349 Al Viro           2018-07-08  4246  	struct file *res;
^1da177e4c3f41 Linus Torvalds    2005-04-16  4247  
703321b60b605b Matthew Auld      2017-10-06  4248  	if (IS_ERR(mnt))
703321b60b605b Matthew Auld      2017-10-06  4249  		return ERR_CAST(mnt);
^1da177e4c3f41 Linus Torvalds    2005-04-16  4250  
285b2c4fdd69ea Hugh Dickins      2011-08-03  4251  	if (size < 0 || size > MAX_LFS_FILESIZE)
^1da177e4c3f41 Linus Torvalds    2005-04-16  4252  		return ERR_PTR(-EINVAL);
^1da177e4c3f41 Linus Torvalds    2005-04-16  4253  
^1da177e4c3f41 Linus Torvalds    2005-04-16  4254  	if (shmem_acct_size(flags, size))
^1da177e4c3f41 Linus Torvalds    2005-04-16  4255  		return ERR_PTR(-ENOMEM);
^1da177e4c3f41 Linus Torvalds    2005-04-16  4256  
7a80e5b8c6fa7d Giuseppe Scrivano 2023-01-20  4257  	if (is_idmapped_mnt(mnt))
7a80e5b8c6fa7d Giuseppe Scrivano 2023-01-20  4258  		return ERR_PTR(-EINVAL);
7a80e5b8c6fa7d Giuseppe Scrivano 2023-01-20  4259  
7a80e5b8c6fa7d Giuseppe Scrivano 2023-01-20  4260  	inode = shmem_get_inode(&nop_mnt_idmap, mnt->mnt_sb, NULL,
7a80e5b8c6fa7d Giuseppe Scrivano 2023-01-20 @4261  				S_IFREG | S_IRWXUGO, 0, flags);
98aa926ee22a76 Lukas Czerner     2023-04-03  4262  
98aa926ee22a76 Lukas Czerner     2023-04-03  4263  	if (IS_ERR(inode)) {
dac2d1f6cbfe3f Al Viro           2018-06-09  4264  		shmem_unacct_size(flags, size);
98aa926ee22a76 Lukas Czerner     2023-04-03  4265  		return ERR_CAST(inode);
dac2d1f6cbfe3f Al Viro           2018-06-09  4266  	}
c7277090927a5e Eric Paris        2013-12-02  4267  	inode->i_flags |= i_flags;
^1da177e4c3f41 Linus Torvalds    2005-04-16  4268  	inode->i_size = size;
6d6b77f163c7ea Miklos Szeredi    2011-10-28  4269  	clear_nlink(inode);	/* It is unlinked */
26567cdbbf1a6b Al Viro           2013-03-01  4270  	res = ERR_PTR(ramfs_nommu_expand_for_mapping(inode, size));
93dec2da7b2349 Al Viro           2018-07-08  4271  	if (!IS_ERR(res))
93dec2da7b2349 Al Viro           2018-07-08  4272  		res = alloc_file_pseudo(inode, mnt, name, O_RDWR,
4b42af81f0d7f9 Al Viro           2009-08-05  4273  				&shmem_file_operations);
6b4d0b2793337c Al Viro           2013-02-14  4274  	if (IS_ERR(res))
93dec2da7b2349 Al Viro           2018-07-08  4275  		iput(inode);
6b4d0b2793337c Al Viro           2013-02-14  4276  	return res;
^1da177e4c3f41 Linus Torvalds    2005-04-16  4277  }
c7277090927a5e Eric Paris        2013-12-02  4278  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

Re: [PATCH 2/6] shmem: make shmem_get_inode() return ERR_PTR instead of NULL

[kernel test robot]

Hi,

kernel test robot noticed the following build errors:

[auto build test ERROR on linus/master]
[also build test ERROR on v6.3-rc5]
[cannot apply to akpm-mm/mm-everything next-20230403]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/cem-kernel-org/shmem-make-shmem_inode_acct_block-return-error/20230403-165022
patch link:    https://lore.kernel.org/r/20230403084759.884681-3-cem%40kernel.org
patch subject: [PATCH 2/6] shmem: make shmem_get_inode() return ERR_PTR instead of NULL
config: arm-randconfig-r033-20230403 (https://download.01.org/0day-ci/archive/20230404/202304041204.sEsaejmQ-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/98aa926ee22a768f6a2dc8b0b897d018fc47497e
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review cem-kernel-org/shmem-make-shmem_inode_acct_block-return-error/20230403-165022
        git checkout 98aa926ee22a768f6a2dc8b0b897d018fc47497e
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304041204.sEsaejmQ-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

   mm/shmem.c: In function '__shmem_file_setup':
>> mm/shmem.c:4260:33: error: passing argument 1 of 'shmem_get_inode' from incompatible pointer type [-Werror=incompatible-pointer-types]
    4260 |         inode = shmem_get_inode(&nop_mnt_idmap, mnt->mnt_sb, NULL,
         |                                 ^~~~~~~~~~~~~~
         |                                 |
         |                                 struct mnt_idmap *
   mm/shmem.c:4231:65: note: expected 'struct super_block *' but argument is of type 'struct mnt_idmap *'
    4231 | static inline struct inode *shmem_get_inode(struct super_block *sb, struct inode *dir,
         |                                             ~~~~~~~~~~~~~~~~~~~~^~
   mm/shmem.c:4260:52: error: passing argument 2 of 'shmem_get_inode' from incompatible pointer type [-Werror=incompatible-pointer-types]
    4260 |         inode = shmem_get_inode(&nop_mnt_idmap, mnt->mnt_sb, NULL,
         |                                                 ~~~^~~~~~~~
         |                                                    |
         |                                                    struct super_block *
   mm/shmem.c:4231:83: note: expected 'struct inode *' but argument is of type 'struct super_block *'
    4231 | static inline struct inode *shmem_get_inode(struct super_block *sb, struct inode *dir,
         |                                                                     ~~~~~~~~~~~~~~^~~
   In file included from include/uapi/linux/posix_types.h:5,
                    from include/uapi/linux/types.h:14,
                    from include/linux/types.h:6,
                    from include/linux/kasan-checks.h:5,
                    from include/asm-generic/rwonce.h:26,
                    from ./arch/arm/include/generated/asm/rwonce.h:1,
                    from include/linux/compiler.h:247,
                    from include/linux/build_bug.h:5,
                    from include/linux/container_of.h:5,
                    from include/linux/list.h:5,
                    from include/linux/wait.h:7,
                    from include/linux/wait_bit.h:8,
                    from include/linux/fs.h:6,
                    from mm/shmem.c:24:
>> include/linux/stddef.h:8:14: warning: passing argument 3 of 'shmem_get_inode' makes integer from pointer without a cast [-Wint-conversion]
       8 | #define NULL ((void *)0)
         |              ^~~~~~~~~~~
         |              |
         |              void *
   mm/shmem.c:4260:62: note: in expansion of macro 'NULL'
    4260 |         inode = shmem_get_inode(&nop_mnt_idmap, mnt->mnt_sb, NULL,
         |                                                              ^~~~
   mm/shmem.c:4232:53: note: expected 'umode_t' {aka 'short unsigned int'} but argument is of type 'void *'
    4232 |                                             umode_t mode, dev_t dev, unsigned long flags)
         |                                             ~~~~~~~~^~~~
>> mm/shmem.c:4260:17: error: too many arguments to function 'shmem_get_inode'
    4260 |         inode = shmem_get_inode(&nop_mnt_idmap, mnt->mnt_sb, NULL,
         |                 ^~~~~~~~~~~~~~~
   mm/shmem.c:4231:29: note: declared here
    4231 | static inline struct inode *shmem_get_inode(struct super_block *sb, struct inode *dir,
         |                             ^~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/shmem_get_inode +4260 mm/shmem.c

^1da177e4c3f41 Linus Torvalds    2005-04-16  4241  
703321b60b605b Matthew Auld      2017-10-06  4242  static struct file *__shmem_file_setup(struct vfsmount *mnt, const char *name, loff_t size,
c7277090927a5e Eric Paris        2013-12-02  4243  				       unsigned long flags, unsigned int i_flags)
^1da177e4c3f41 Linus Torvalds    2005-04-16  4244  {
^1da177e4c3f41 Linus Torvalds    2005-04-16  4245  	struct inode *inode;
93dec2da7b2349 Al Viro           2018-07-08  4246  	struct file *res;
^1da177e4c3f41 Linus Torvalds    2005-04-16  4247  
703321b60b605b Matthew Auld      2017-10-06  4248  	if (IS_ERR(mnt))
703321b60b605b Matthew Auld      2017-10-06  4249  		return ERR_CAST(mnt);
^1da177e4c3f41 Linus Torvalds    2005-04-16  4250  
285b2c4fdd69ea Hugh Dickins      2011-08-03  4251  	if (size < 0 || size > MAX_LFS_FILESIZE)
^1da177e4c3f41 Linus Torvalds    2005-04-16  4252  		return ERR_PTR(-EINVAL);
^1da177e4c3f41 Linus Torvalds    2005-04-16  4253  
^1da177e4c3f41 Linus Torvalds    2005-04-16  4254  	if (shmem_acct_size(flags, size))
^1da177e4c3f41 Linus Torvalds    2005-04-16  4255  		return ERR_PTR(-ENOMEM);
^1da177e4c3f41 Linus Torvalds    2005-04-16  4256  
7a80e5b8c6fa7d Giuseppe Scrivano 2023-01-20  4257  	if (is_idmapped_mnt(mnt))
7a80e5b8c6fa7d Giuseppe Scrivano 2023-01-20  4258  		return ERR_PTR(-EINVAL);
7a80e5b8c6fa7d Giuseppe Scrivano 2023-01-20  4259  
7a80e5b8c6fa7d Giuseppe Scrivano 2023-01-20 @4260  	inode = shmem_get_inode(&nop_mnt_idmap, mnt->mnt_sb, NULL,
7a80e5b8c6fa7d Giuseppe Scrivano 2023-01-20  4261  				S_IFREG | S_IRWXUGO, 0, flags);
98aa926ee22a76 Lukas Czerner     2023-04-03  4262  
98aa926ee22a76 Lukas Czerner     2023-04-03  4263  	if (IS_ERR(inode)) {
dac2d1f6cbfe3f Al Viro           2018-06-09  4264  		shmem_unacct_size(flags, size);
98aa926ee22a76 Lukas Czerner     2023-04-03  4265  		return ERR_CAST(inode);
dac2d1f6cbfe3f Al Viro           2018-06-09  4266  	}
c7277090927a5e Eric Paris        2013-12-02  4267  	inode->i_flags |= i_flags;
^1da177e4c3f41 Linus Torvalds    2005-04-16  4268  	inode->i_size = size;
6d6b77f163c7ea Miklos Szeredi    2011-10-28  4269  	clear_nlink(inode);	/* It is unlinked */
26567cdbbf1a6b Al Viro           2013-03-01  4270  	res = ERR_PTR(ramfs_nommu_expand_for_mapping(inode, size));
93dec2da7b2349 Al Viro           2018-07-08  4271  	if (!IS_ERR(res))
93dec2da7b2349 Al Viro           2018-07-08  4272  		res = alloc_file_pseudo(inode, mnt, name, O_RDWR,
4b42af81f0d7f9 Al Viro           2009-08-05  4273  				&shmem_file_operations);
6b4d0b2793337c Al Viro           2013-02-14  4274  	if (IS_ERR(res))
93dec2da7b2349 Al Viro           2018-07-08  4275  		iput(inode);
6b4d0b2793337c Al Viro           2013-02-14  4276  	return res;
^1da177e4c3f41 Linus Torvalds    2005-04-16  4277  }
c7277090927a5e Eric Paris        2013-12-02  4278  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

[PATCH 3/6] quota: Check presence of quota operation structures instead of ->quota_read and ->quota_write callbacks

[cem]

From: Jan Kara <jack@suse.cz>

Currently we check whether superblock has ->quota_read and ->quota_write
operations to check whether filesystem supports quotas. However for
example for shmfs we will not read or write dquots so check whether
quota operations are set in the superblock instead.

Signed-off-by: Jan Kara <jack@suse.cz>
---
 fs/quota/dquot.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index a6357f728034a..81563a83b609d 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -2367,7 +2367,7 @@ int dquot_load_quota_sb(struct super_block *sb, int type, int format_id,
 
 	if (!fmt)
 		return -ESRCH;
-	if (!sb->s_op->quota_write || !sb->s_op->quota_read ||
+	if (!sb->dq_op || !sb->s_qcop ||
 	    (type == PRJQUOTA && sb->dq_op->get_projid == NULL)) {
 		error = -EINVAL;
 		goto out_fmt;
-- 
2.30.2

[PATCH 4/6] shmem: prepare shmem quota infrastructure

[cem]

From: Lukas Czerner <lczerner@redhat.com>

Add new shmem quota format, its quota_format_ops together with
dquot_operations

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
---
 fs/Kconfig                 |  12 ++
 include/linux/shmem_fs.h   |   8 +
 include/uapi/linux/quota.h |   1 +
 mm/Makefile                |   2 +-
 mm/shmem_quota.c           | 318 +++++++++++++++++++++++++++++++++++++
 5 files changed, 340 insertions(+), 1 deletion(-)
 create mode 100644 mm/shmem_quota.c

diff --git a/fs/Kconfig b/fs/Kconfig
index e99830c650336..ba809882f1961 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -233,6 +233,18 @@ config TMPFS_INODE64
 
 	  If unsure, say N.
 
+config TMPFS_QUOTA
+	bool "Tmpfs quota support"
+	depends on TMPFS
+	select QUOTA
+	help
+	  Quota support allows to set per user and group limits for tmpfs
+	  usage.  Say Y to enable quota support. Once enabled you can control
+	  user and group quota enforcement with quota, usrquota and grpquota
+	  mount options.
+
+	  If unsure, say N.
+
 config ARCH_SUPPORTS_HUGETLBFS
 	def_bool n
 
diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index 103d1000a5a2e..cf38381bdb4c1 100644
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -163,4 +163,12 @@ extern int shmem_mfill_atomic_pte(struct mm_struct *dst_mm, pmd_t *dst_pmd,
 #endif /* CONFIG_SHMEM */
 #endif /* CONFIG_USERFAULTFD */
 
+/*
+ * Used space is stored as unsigned 64-bit value in bytes but
+ * quota core supports only signed 64-bit values so use that
+ * as a limit
+ */
+#define SHMEM_QUOTA_MAX_SPC_LIMIT 0x7fffffffffffffffLL /* 2^63-1 */
+#define SHMEM_QUOTA_MAX_INO_LIMIT 0x7fffffffffffffffLL
+
 #endif
diff --git a/include/uapi/linux/quota.h b/include/uapi/linux/quota.h
index f17c9636a8593..52090105b8282 100644
--- a/include/uapi/linux/quota.h
+++ b/include/uapi/linux/quota.h
@@ -77,6 +77,7 @@
 #define	QFMT_VFS_V0 2
 #define QFMT_OCFS2 3
 #define	QFMT_VFS_V1 4
+#define	QFMT_SHMEM 5
 
 /* Size of block in which space limits are passed through the quota
  * interface */
diff --git a/mm/Makefile b/mm/Makefile
index 8e105e5b3e293..977d2b66775a9 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -52,7 +52,7 @@ obj-y			:= filemap.o mempool.o oom_kill.o fadvise.o \
 			   readahead.o swap.o truncate.o vmscan.o shmem.o \
 			   util.o mmzone.o vmstat.o backing-dev.o \
 			   mm_init.o percpu.o slab_common.o \
-			   compaction.o \
+			   compaction.o shmem_quota.o\
 			   interval_tree.o list_lru.o workingset.o \
 			   debug.o gup.o mmap_lock.o $(mmu-y)
 
diff --git a/mm/shmem_quota.c b/mm/shmem_quota.c
new file mode 100644
index 0000000000000..c415043a71e67
--- /dev/null
+++ b/mm/shmem_quota.c
@@ -0,0 +1,318 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * In memory quota format relies on quota infrastructure to store dquot
+ * information for us. While conventional quota formats for file systems
+ * with persistent storage can load quota information into dquot from the
+ * storage on-demand and hence quota dquot shrinker can free any dquot
+ * that is not currently being used, it must be avoided here. Otherwise we
+ * can lose valuable information, user provided limits, because there is
+ * no persistent storage to load the information from afterwards.
+ *
+ * One information that in-memory quota format needs to keep track of is
+ * a sorted list of ids for each quota type. This is done by utilizing
+ * an rb tree which root is stored in mem_dqinfo->dqi_priv for each quota
+ * type.
+ *
+ * This format can be used to support quota on file system without persistent
+ * storage such as tmpfs.
+ *
+ * Author:	Lukas Czerner <lczerner@redhat.com>
+ *		Carlos Maiolino <cmaiolino@redhat.com>
+ *
+ * Copyright (C) 2023 Red Hat, Inc.
+ */
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/mount.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/rbtree.h>
+#include <linux/shmem_fs.h>
+
+#include <linux/quotaops.h>
+#include <linux/quota.h>
+
+#ifdef CONFIG_TMPFS_QUOTA
+
+#define SHMEM_MAXQUOTAS 2
+
+/*
+ * The following constants define the amount of time given a user
+ * before the soft limits are treated as hard limits (usually resulting
+ * in an allocation failure). The timer is started when the user crosses
+ * their soft limit, it is reset when they go below their soft limit.
+ */
+#define SHMEM_MAX_IQ_TIME 604800	/* (7*24*60*60) 1 week */
+#define SHMEM_MAX_DQ_TIME 604800	/* (7*24*60*60) 1 week */
+
+struct quota_id {
+	struct rb_node	node;
+	qid_t		id;
+	qsize_t		bhardlimit;
+	qsize_t		bsoftlimit;
+	qsize_t		ihardlimit;
+	qsize_t		isoftlimit;
+};
+
+static int shmem_check_quota_file(struct super_block *sb, int type)
+{
+	/* There is no real quota file, nothing to do */
+	return 1;
+}
+
+/*
+ * There is no real quota file. Just allocate rb_root for quota ids and
+ * set limits
+ */
+static int shmem_read_file_info(struct super_block *sb, int type)
+{
+	struct quota_info *dqopt = sb_dqopt(sb);
+	struct mem_dqinfo *info = &dqopt->info[type];
+
+	info->dqi_priv = kzalloc(sizeof(struct rb_root), GFP_NOFS);
+	if (!info->dqi_priv)
+		return -ENOMEM;
+
+	info->dqi_max_spc_limit = SHMEM_QUOTA_MAX_SPC_LIMIT;
+	info->dqi_max_ino_limit = SHMEM_QUOTA_MAX_INO_LIMIT;
+
+	info->dqi_bgrace = SHMEM_MAX_DQ_TIME;
+	info->dqi_igrace = SHMEM_MAX_IQ_TIME;
+	info->dqi_flags = 0;
+
+	return 0;
+}
+
+static int shmem_write_file_info(struct super_block *sb, int type)
+{
+	/* There is no real quota file, nothing to do */
+	return 0;
+}
+
+/*
+ * Free all the quota_id entries in the rb tree and rb_root.
+ */
+static int shmem_free_file_info(struct super_block *sb, int type)
+{
+	struct mem_dqinfo *info = &sb_dqopt(sb)->info[type];
+	struct rb_root *root = info->dqi_priv;
+	struct quota_id *entry;
+	struct rb_node *node;
+
+	info->dqi_priv = NULL;
+	node = rb_first(root);
+	while (node) {
+		entry = rb_entry(node, struct quota_id, node);
+		node = rb_next(&entry->node);
+
+		rb_erase(&entry->node, root);
+		kfree(entry);
+	}
+
+	kfree(root);
+	return 0;
+}
+
+static int shmem_get_next_id(struct super_block *sb, struct kqid *qid)
+{
+	struct mem_dqinfo *info = sb_dqinfo(sb, qid->type);
+	struct rb_node *node = ((struct rb_root *)info->dqi_priv)->rb_node;
+	qid_t id = from_kqid(&init_user_ns, *qid);
+	struct quota_info *dqopt = sb_dqopt(sb);
+	struct quota_id *entry = NULL;
+	int ret = 0;
+
+	if (!sb_has_quota_active(sb, qid->type))
+		return -ESRCH;
+
+	down_read(&dqopt->dqio_sem);
+	while (node) {
+		entry = rb_entry(node, struct quota_id, node);
+
+		if (id < entry->id)
+			node = node->rb_left;
+		else if (id > entry->id)
+			node = node->rb_right;
+		else
+			goto got_next_id;
+	}
+
+	if (!entry) {
+		ret = -ENOENT;
+		goto out_unlock;
+	}
+
+	if (id > entry->id) {
+		node = rb_next(&entry->node);
+		if (!node) {
+			ret = -ENOENT;
+			goto out_unlock;
+		}
+		entry = rb_entry(node, struct quota_id, node);
+	}
+
+got_next_id:
+	*qid = make_kqid(&init_user_ns, qid->type, entry->id);
+out_unlock:
+	up_read(&dqopt->dqio_sem);
+	return ret;
+}
+
+/*
+ * Load dquot with limits from existing entry, or create the new entry if
+ * it does not exist.
+ */
+static int shmem_acquire_dquot(struct dquot *dquot)
+{
+	struct mem_dqinfo *info = sb_dqinfo(dquot->dq_sb, dquot->dq_id.type);
+	struct rb_node **n = &((struct rb_root *)info->dqi_priv)->rb_node;
+	struct rb_node *parent = NULL, *new_node = NULL;
+	struct quota_id *new_entry, *entry;
+	qid_t id = from_kqid(&init_user_ns, dquot->dq_id);
+	struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
+	int ret = 0;
+
+	mutex_lock(&dquot->dq_lock);
+
+	down_write(&dqopt->dqio_sem);
+	while (*n) {
+		parent = *n;
+		entry = rb_entry(parent, struct quota_id, node);
+
+		if (id < entry->id)
+			n = &(*n)->rb_left;
+		else if (id > entry->id)
+			n = &(*n)->rb_right;
+		else
+			goto found;
+	}
+
+	/* We don't have entry for this id yet, create it */
+	new_entry = kzalloc(sizeof(struct quota_id), GFP_NOFS);
+	if (!new_entry) {
+		ret = -ENOMEM;
+		goto out_unlock;
+	}
+
+	new_entry->id = id;
+	new_node = &new_entry->node;
+	rb_link_node(new_node, parent, n);
+	rb_insert_color(new_node, (struct rb_root *)info->dqi_priv);
+	entry = new_entry;
+
+found:
+	/* Load the stored limits from the tree */
+	spin_lock(&dquot->dq_dqb_lock);
+	dquot->dq_dqb.dqb_bhardlimit = entry->bhardlimit;
+	dquot->dq_dqb.dqb_bsoftlimit = entry->bsoftlimit;
+	dquot->dq_dqb.dqb_ihardlimit = entry->ihardlimit;
+	dquot->dq_dqb.dqb_isoftlimit = entry->isoftlimit;
+
+	if (!dquot->dq_dqb.dqb_bhardlimit &&
+	    !dquot->dq_dqb.dqb_bsoftlimit &&
+	    !dquot->dq_dqb.dqb_ihardlimit &&
+	    !dquot->dq_dqb.dqb_isoftlimit)
+		set_bit(DQ_FAKE_B, &dquot->dq_flags);
+	spin_unlock(&dquot->dq_dqb_lock);
+
+	/* Make sure flags update is visible after dquot has been filled */
+	smp_mb__before_atomic();
+	set_bit(DQ_ACTIVE_B, &dquot->dq_flags);
+out_unlock:
+	up_write(&dqopt->dqio_sem);
+	mutex_unlock(&dquot->dq_lock);
+	return ret;
+}
+
+/*
+ * Store limits from dquot in the tree unless it's fake. If it is fake
+ * remove the id from the tree since there is no useful information in
+ * there.
+ */
+static int shmem_release_dquot(struct dquot *dquot)
+{
+	struct mem_dqinfo *info = sb_dqinfo(dquot->dq_sb, dquot->dq_id.type);
+	struct rb_node *node = ((struct rb_root *)info->dqi_priv)->rb_node;
+	qid_t id = from_kqid(&init_user_ns, dquot->dq_id);
+	struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
+	struct quota_id *entry = NULL;
+
+	mutex_lock(&dquot->dq_lock);
+	/* Check whether we are not racing with some other dqget() */
+	if (dquot_is_busy(dquot))
+		goto out_dqlock;
+
+	down_write(&dqopt->dqio_sem);
+	while (node) {
+		entry = rb_entry(node, struct quota_id, node);
+
+		if (id < entry->id)
+			node = node->rb_left;
+		else if (id > entry->id)
+			node = node->rb_right;
+		else
+			goto found;
+	}
+
+	up_write(&dqopt->dqio_sem);
+	mutex_unlock(&dquot->dq_lock);
+	return 0;
+
+found:
+	if (test_bit(DQ_FAKE_B, &dquot->dq_flags)) {
+		/* Remove entry from the tree */
+		rb_erase(&entry->node, info->dqi_priv);
+		kfree(entry);
+	} else {
+		/* Store the limits in the tree */
+		spin_lock(&dquot->dq_dqb_lock);
+		entry->bhardlimit = dquot->dq_dqb.dqb_bhardlimit;
+		entry->bsoftlimit = dquot->dq_dqb.dqb_bsoftlimit;
+		entry->ihardlimit = dquot->dq_dqb.dqb_ihardlimit;
+		entry->isoftlimit = dquot->dq_dqb.dqb_isoftlimit;
+		spin_unlock(&dquot->dq_dqb_lock);
+	}
+
+	clear_bit(DQ_ACTIVE_B, &dquot->dq_flags);
+	up_write(&dqopt->dqio_sem);
+
+out_dqlock:
+	mutex_unlock(&dquot->dq_lock);
+	return 0;
+}
+
+int shmem_mark_dquot_dirty(struct dquot *dquot)
+{
+	return 0;
+}
+
+int shmem_dquot_write_info(struct super_block *sb, int type)
+{
+	return 0;
+}
+
+static const struct quota_format_ops shmem_format_ops = {
+	.check_quota_file	= shmem_check_quota_file,
+	.read_file_info		= shmem_read_file_info,
+	.write_file_info	= shmem_write_file_info,
+	.free_file_info		= shmem_free_file_info,
+};
+
+struct quota_format_type shmem_quota_format = {
+	.qf_fmt_id = QFMT_SHMEM,
+	.qf_ops = &shmem_format_ops,
+	.qf_owner = THIS_MODULE
+};
+
+const struct dquot_operations shmem_quota_operations = {
+	.acquire_dquot		= shmem_acquire_dquot,
+	.release_dquot		= shmem_release_dquot,
+	.alloc_dquot		= dquot_alloc,
+	.destroy_dquot		= dquot_destroy,
+	.write_info		= shmem_dquot_write_info,
+	.mark_dirty		= shmem_mark_dquot_dirty,
+	.get_next_id		= shmem_get_next_id,
+};
+#endif /* CONFIG_TMPFS_QUOTA */
-- 
2.30.2

Re: [PATCH 4/6] shmem: prepare shmem quota infrastructure

[Jan Kara]

On Mon 03-04-23 10:47:57, cem@kernel.org wrote:
> From: Lukas Czerner <lczerner@redhat.com>
> 
> Add new shmem quota format, its quota_format_ops together with
> dquot_operations
> 
> Signed-off-by: Lukas Czerner <lczerner@redhat.com>
> Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>

Just two small things below.

> diff --git a/mm/shmem_quota.c b/mm/shmem_quota.c
> new file mode 100644
> index 0000000000000..c415043a71e67
> --- /dev/null
> +++ b/mm/shmem_quota.c
...
> +/*
> + * Load dquot with limits from existing entry, or create the new entry if
> + * it does not exist.
> + */
> +static int shmem_acquire_dquot(struct dquot *dquot)
> +{
> +	struct mem_dqinfo *info = sb_dqinfo(dquot->dq_sb, dquot->dq_id.type);
> +	struct rb_node **n = &((struct rb_root *)info->dqi_priv)->rb_node;
> +	struct rb_node *parent = NULL, *new_node = NULL;
> +	struct quota_id *new_entry, *entry;
> +	qid_t id = from_kqid(&init_user_ns, dquot->dq_id);
> +	struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
> +	int ret = 0;
> +
> +	mutex_lock(&dquot->dq_lock);
> +
> +	down_write(&dqopt->dqio_sem);
> +	while (*n) {
> +		parent = *n;
> +		entry = rb_entry(parent, struct quota_id, node);
> +
> +		if (id < entry->id)
> +			n = &(*n)->rb_left;
> +		else if (id > entry->id)
> +			n = &(*n)->rb_right;
> +		else
> +			goto found;
> +	}
> +
> +	/* We don't have entry for this id yet, create it */
> +	new_entry = kzalloc(sizeof(struct quota_id), GFP_NOFS);
> +	if (!new_entry) {
> +		ret = -ENOMEM;
> +		goto out_unlock;
> +	}
> +
> +	new_entry->id = id;
> +	new_node = &new_entry->node;
> +	rb_link_node(new_node, parent, n);
> +	rb_insert_color(new_node, (struct rb_root *)info->dqi_priv);
> +	entry = new_entry;
> +
> +found:
> +	/* Load the stored limits from the tree */
> +	spin_lock(&dquot->dq_dqb_lock);
> +	dquot->dq_dqb.dqb_bhardlimit = entry->bhardlimit;
> +	dquot->dq_dqb.dqb_bsoftlimit = entry->bsoftlimit;
> +	dquot->dq_dqb.dqb_ihardlimit = entry->ihardlimit;
> +	dquot->dq_dqb.dqb_isoftlimit = entry->isoftlimit;
> +
> +	if (!dquot->dq_dqb.dqb_bhardlimit &&
> +	    !dquot->dq_dqb.dqb_bsoftlimit &&
> +	    !dquot->dq_dqb.dqb_ihardlimit &&
> +	    !dquot->dq_dqb.dqb_isoftlimit)
> +		set_bit(DQ_FAKE_B, &dquot->dq_flags);
> +	spin_unlock(&dquot->dq_dqb_lock);
> +
> +	/* Make sure flags update is visible after dquot has been filled */
> +	smp_mb__before_atomic();
> +	set_bit(DQ_ACTIVE_B, &dquot->dq_flags);

I'm slightly wondering whether we shouldn't have a dquot_mark_active()
helper for this to hide the barrier details...

> +out_unlock:
> +	up_write(&dqopt->dqio_sem);
> +	mutex_unlock(&dquot->dq_lock);
> +	return ret;
> +}
> +
> +/*
> + * Store limits from dquot in the tree unless it's fake. If it is fake
> + * remove the id from the tree since there is no useful information in
> + * there.
> + */
> +static int shmem_release_dquot(struct dquot *dquot)
> +{
> +	struct mem_dqinfo *info = sb_dqinfo(dquot->dq_sb, dquot->dq_id.type);
> +	struct rb_node *node = ((struct rb_root *)info->dqi_priv)->rb_node;
> +	qid_t id = from_kqid(&init_user_ns, dquot->dq_id);
> +	struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
> +	struct quota_id *entry = NULL;
> +
> +	mutex_lock(&dquot->dq_lock);
> +	/* Check whether we are not racing with some other dqget() */
> +	if (dquot_is_busy(dquot))
> +		goto out_dqlock;
> +
> +	down_write(&dqopt->dqio_sem);
> +	while (node) {
> +		entry = rb_entry(node, struct quota_id, node);
> +
> +		if (id < entry->id)
> +			node = node->rb_left;
> +		else if (id > entry->id)
> +			node = node->rb_right;
> +		else
> +			goto found;
> +	}
> +
> +	up_write(&dqopt->dqio_sem);
> +	mutex_unlock(&dquot->dq_lock);

We should report some kind of error here, shouldn't we? We do expect to
have the quota_id allocated from shmem_acquire_dquot() and we will be
possibly loosing set limits here.

Otherwise the patch looks good to me.

								Honza
-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR

Re: [PATCH 4/6] shmem: prepare shmem quota infrastructure

[Carlos Maiolino]

Hi Honza.

> > +	if (!dquot->dq_dqb.dqb_bhardlimit &&
> > +	    !dquot->dq_dqb.dqb_bsoftlimit &&
> > +	    !dquot->dq_dqb.dqb_ihardlimit &&
> > +	    !dquot->dq_dqb.dqb_isoftlimit)
> > +		set_bit(DQ_FAKE_B, &dquot->dq_flags);
> > +	spin_unlock(&dquot->dq_dqb_lock);
> > +
> > +	/* Make sure flags update is visible after dquot has been filled */
> > +	smp_mb__before_atomic();
> > +	set_bit(DQ_ACTIVE_B, &dquot->dq_flags);
> 
> I'm slightly wondering whether we shouldn't have a dquot_mark_active()
> helper for this to hide the barrier details...

This sounds good to me, would be ok for you if I simply add this to my todo
list, and do it once this series is merged? I'd rather avoid to add more patches
to the series now adding more review overhead.
I can send a new patch later creating a new helper and replacing all
set_bit(DQ_ACTIVE_B, ...) calls with the new helper.

> 
> > +out_unlock:
> > +	up_write(&dqopt->dqio_sem);
> > +	mutex_unlock(&dquot->dq_lock);
> > +	return ret;
> > +}
> > +
> > +/*
> > + * Store limits from dquot in the tree unless it's fake. If it is fake
> > + * remove the id from the tree since there is no useful information in
> > + * there.
> > + */
> > +static int shmem_release_dquot(struct dquot *dquot)
> > +{
> > +	struct mem_dqinfo *info = sb_dqinfo(dquot->dq_sb, dquot->dq_id.type);
> > +	struct rb_node *node = ((struct rb_root *)info->dqi_priv)->rb_node;
> > +	qid_t id = from_kqid(&init_user_ns, dquot->dq_id);
> > +	struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
> > +	struct quota_id *entry = NULL;
> > +
> > +	mutex_lock(&dquot->dq_lock);
> > +	/* Check whether we are not racing with some other dqget() */
> > +	if (dquot_is_busy(dquot))
> > +		goto out_dqlock;
> > +
> > +	down_write(&dqopt->dqio_sem);
> > +	while (node) {
> > +		entry = rb_entry(node, struct quota_id, node);
> > +
> > +		if (id < entry->id)
> > +			node = node->rb_left;
> > +		else if (id > entry->id)
> > +			node = node->rb_right;
> > +		else
> > +			goto found;
> > +	}
> > +
> > +	up_write(&dqopt->dqio_sem);
> > +	mutex_unlock(&dquot->dq_lock);
> 
> We should report some kind of error here, shouldn't we? We do expect to
> have the quota_id allocated from shmem_acquire_dquot() and we will be
> possibly loosing set limits here.
> 

Sounds correct, I'll update it once we agree on how to proceed with your above
suggestion of dquot_mark_active().

> Otherwise the patch looks good to me.
> 
> 								Honza
> --
> Jan Kara <jack@suse.com>
> SUSE Labs, CR

-- 
Carlos Maiolino

Re: [PATCH 4/6] shmem: prepare shmem quota infrastructure

[Jan Kara]

Hello Carlos!

On Tue 04-04-23 15:48:36, Carlos Maiolino wrote:
> > > +	if (!dquot->dq_dqb.dqb_bhardlimit &&
> > > +	    !dquot->dq_dqb.dqb_bsoftlimit &&
> > > +	    !dquot->dq_dqb.dqb_ihardlimit &&
> > > +	    !dquot->dq_dqb.dqb_isoftlimit)
> > > +		set_bit(DQ_FAKE_B, &dquot->dq_flags);
> > > +	spin_unlock(&dquot->dq_dqb_lock);
> > > +
> > > +	/* Make sure flags update is visible after dquot has been filled */
> > > +	smp_mb__before_atomic();
> > > +	set_bit(DQ_ACTIVE_B, &dquot->dq_flags);
> > 
> > I'm slightly wondering whether we shouldn't have a dquot_mark_active()
> > helper for this to hide the barrier details...
> 
> This sounds good to me, would be ok for you if I simply add this to my todo
> list, and do it once this series is merged? I'd rather avoid to add more patches
> to the series now adding more review overhead.
> I can send a new patch later creating a new helper and replacing all
> set_bit(DQ_ACTIVE_B, ...) calls with the new helper.

Yes, sounds fine to me.

								Honza
-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR

Re: [PATCH 4/6] shmem: prepare shmem quota infrastructure

[Carlos Maiolino]

Hi Honza

> > > +static int shmem_release_dquot(struct dquot *dquot)
> > > +{
> > > +	struct mem_dqinfo *info = sb_dqinfo(dquot->dq_sb, dquot->dq_id.type);
> > > +	struct rb_node *node = ((struct rb_root *)info->dqi_priv)->rb_node;
> > > +	qid_t id = from_kqid(&init_user_ns, dquot->dq_id);
> > > +	struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
> > > +	struct quota_id *entry = NULL;
> > > +
> > > +	mutex_lock(&dquot->dq_lock);
> > > +	/* Check whether we are not racing with some other dqget() */
> > > +	if (dquot_is_busy(dquot))
> > > +		goto out_dqlock;
> > > +
> > > +	down_write(&dqopt->dqio_sem);
> > > +	while (node) {
> > > +		entry = rb_entry(node, struct quota_id, node);
> > > +
> > > +		if (id < entry->id)
> > > +			node = node->rb_left;
> > > +		else if (id > entry->id)
> > > +			node = node->rb_right;
> > > +		else
> > > +			goto found;
> > > +	}
> > > +
> > > +	up_write(&dqopt->dqio_sem);
> > > +	mutex_unlock(&dquot->dq_lock);
> > 
> > We should report some kind of error here, shouldn't we? We do expect to
> > have the quota_id allocated from shmem_acquire_dquot() and we will be
> > possibly loosing set limits here.
> > 

I've been looking into this today, and I'm not sure if there is any error we
should be reporting here, as there isn't anything to really go wrong here. I was
comparing it with other filesystems, and most of them uses dquot_release()
return value, as a return value for .release_dquot. And on such cases, the error
could be other than zero, if something failed while writing the dquot to disk.
In the case here, we just write to the RB tree in memory, and it has already
been allocated, so, I don't think there is any error we could be returning here.
Does it sound right to you?

Cheers.


-- 
Carlos Maiolino

Re: [PATCH 4/6] shmem: prepare shmem quota infrastructure

[Jan Kara]

Hi Carlos!

On Wed 12-04-23 11:44:32, Carlos Maiolino wrote:
> > > > +static int shmem_release_dquot(struct dquot *dquot)
> > > > +{
> > > > +	struct mem_dqinfo *info = sb_dqinfo(dquot->dq_sb, dquot->dq_id.type);
> > > > +	struct rb_node *node = ((struct rb_root *)info->dqi_priv)->rb_node;
> > > > +	qid_t id = from_kqid(&init_user_ns, dquot->dq_id);
> > > > +	struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
> > > > +	struct quota_id *entry = NULL;
> > > > +
> > > > +	mutex_lock(&dquot->dq_lock);
> > > > +	/* Check whether we are not racing with some other dqget() */
> > > > +	if (dquot_is_busy(dquot))
> > > > +		goto out_dqlock;
> > > > +
> > > > +	down_write(&dqopt->dqio_sem);
> > > > +	while (node) {
> > > > +		entry = rb_entry(node, struct quota_id, node);
> > > > +
> > > > +		if (id < entry->id)
> > > > +			node = node->rb_left;
> > > > +		else if (id > entry->id)
> > > > +			node = node->rb_right;
> > > > +		else
> > > > +			goto found;
> > > > +	}
> > > > +
> > > > +	up_write(&dqopt->dqio_sem);
> > > > +	mutex_unlock(&dquot->dq_lock);
> > > 
> > > We should report some kind of error here, shouldn't we? We do expect to
> > > have the quota_id allocated from shmem_acquire_dquot() and we will be
> > > possibly loosing set limits here.
> > > 
> 
> I've been looking into this today, and I'm not sure if there is any error we
> should be reporting here, as there isn't anything to really go wrong here. I was
> comparing it with other filesystems, and most of them uses dquot_release()
> return value, as a return value for .release_dquot. And on such cases, the error
> could be other than zero, if something failed while writing the dquot to disk.
> In the case here, we just write to the RB tree in memory, and it has already
> been allocated, so, I don't think there is any error we could be returning here.
> Does it sound right to you?

My point is that it should never happen that we don't find the entry in the
rbtree in shmem_release_dquot(). So we should rather WARN_ON_ONCE() and
bail or something like that, rather then silently return success. Not a big
deal but for initial debugging it might be useful.

								Honza
-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR

Re: [PATCH 4/6] shmem: prepare shmem quota infrastructure

[Carlos Maiolino]

On Wed, Apr 12, 2023 at 12:04:40PM +0200, Jan Kara wrote:
> Hi Carlos!
> 
> On Wed 12-04-23 11:44:32, Carlos Maiolino wrote:
> > > > > +static int shmem_release_dquot(struct dquot *dquot)
> > > > > +{
> > > > > +	struct mem_dqinfo *info = sb_dqinfo(dquot->dq_sb, dquot->dq_id.type);
> > > > > +	struct rb_node *node = ((struct rb_root *)info->dqi_priv)->rb_node;
> > > > > +	qid_t id = from_kqid(&init_user_ns, dquot->dq_id);
> > > > > +	struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
> > > > > +	struct quota_id *entry = NULL;
> > > > > +
> > > > > +	mutex_lock(&dquot->dq_lock);
> > > > > +	/* Check whether we are not racing with some other dqget() */
> > > > > +	if (dquot_is_busy(dquot))
> > > > > +		goto out_dqlock;
> > > > > +
> > > > > +	down_write(&dqopt->dqio_sem);
> > > > > +	while (node) {
> > > > > +		entry = rb_entry(node, struct quota_id, node);
> > > > > +
> > > > > +		if (id < entry->id)
> > > > > +			node = node->rb_left;
> > > > > +		else if (id > entry->id)
> > > > > +			node = node->rb_right;
> > > > > +		else
> > > > > +			goto found;
> > > > > +	}
> > > > > +
> > > > > +	up_write(&dqopt->dqio_sem);
> > > > > +	mutex_unlock(&dquot->dq_lock);
> > > >
> > > > We should report some kind of error here, shouldn't we? We do expect to
> > > > have the quota_id allocated from shmem_acquire_dquot() and we will be
> > > > possibly loosing set limits here.
> > > >
> >
> > I've been looking into this today, and I'm not sure if there is any error we
> > should be reporting here, as there isn't anything to really go wrong here. I was
> > comparing it with other filesystems, and most of them uses dquot_release()
> > return value, as a return value for .release_dquot. And on such cases, the error
> > could be other than zero, if something failed while writing the dquot to disk.
> > In the case here, we just write to the RB tree in memory, and it has already
> > been allocated, so, I don't think there is any error we could be returning here.
> > Does it sound right to you?
> 
> My point is that it should never happen that we don't find the entry in the
> rbtree in shmem_release_dquot(). So we should rather WARN_ON_ONCE() and
> bail or something like that, rather then silently return success. Not a big
> deal but for initial debugging it might be useful.
> 

I see. Thanks Honza. What you think about something like this:

	while (node) {
		entry = rb_entry(node, struct quota_id, node);

		if (id < entry->id)
			node = node->rb_left;
		else if (id > entry->id)
			node = node->rb_right;
		else
			goto found;
	}

	/* We should always find the entry in the rb tree */
	WARN_ONCE(1, "quota id not in rb tree!\n", __func__)
	return -ENOENT;


I am not sure if -ENOENT is the best error here though. It seems the most
logical one, as -ENOMEM wouldn't make much sense, any suggestions if you don't
agree with ENOENT?


> 								Honza
> --
> Jan Kara <jack@suse.com>
> SUSE Labs, CR

-- 
Carlos Maiolino

Re: [PATCH 4/6] shmem: prepare shmem quota infrastructure

[Jan Kara]

On Wed 12-04-23 13:14:43, Carlos Maiolino wrote:
> On Wed, Apr 12, 2023 at 12:04:40PM +0200, Jan Kara wrote:
> > Hi Carlos!
> > 
> > On Wed 12-04-23 11:44:32, Carlos Maiolino wrote:
> > > > > > +static int shmem_release_dquot(struct dquot *dquot)
> > > > > > +{
> > > > > > +	struct mem_dqinfo *info = sb_dqinfo(dquot->dq_sb, dquot->dq_id.type);
> > > > > > +	struct rb_node *node = ((struct rb_root *)info->dqi_priv)->rb_node;
> > > > > > +	qid_t id = from_kqid(&init_user_ns, dquot->dq_id);
> > > > > > +	struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
> > > > > > +	struct quota_id *entry = NULL;
> > > > > > +
> > > > > > +	mutex_lock(&dquot->dq_lock);
> > > > > > +	/* Check whether we are not racing with some other dqget() */
> > > > > > +	if (dquot_is_busy(dquot))
> > > > > > +		goto out_dqlock;
> > > > > > +
> > > > > > +	down_write(&dqopt->dqio_sem);
> > > > > > +	while (node) {
> > > > > > +		entry = rb_entry(node, struct quota_id, node);
> > > > > > +
> > > > > > +		if (id < entry->id)
> > > > > > +			node = node->rb_left;
> > > > > > +		else if (id > entry->id)
> > > > > > +			node = node->rb_right;
> > > > > > +		else
> > > > > > +			goto found;
> > > > > > +	}
> > > > > > +
> > > > > > +	up_write(&dqopt->dqio_sem);
> > > > > > +	mutex_unlock(&dquot->dq_lock);
> > > > >
> > > > > We should report some kind of error here, shouldn't we? We do expect to
> > > > > have the quota_id allocated from shmem_acquire_dquot() and we will be
> > > > > possibly loosing set limits here.
> > > > >
> > >
> > > I've been looking into this today, and I'm not sure if there is any error we
> > > should be reporting here, as there isn't anything to really go wrong here. I was
> > > comparing it with other filesystems, and most of them uses dquot_release()
> > > return value, as a return value for .release_dquot. And on such cases, the error
> > > could be other than zero, if something failed while writing the dquot to disk.
> > > In the case here, we just write to the RB tree in memory, and it has already
> > > been allocated, so, I don't think there is any error we could be returning here.
> > > Does it sound right to you?
> > 
> > My point is that it should never happen that we don't find the entry in the
> > rbtree in shmem_release_dquot(). So we should rather WARN_ON_ONCE() and
> > bail or something like that, rather then silently return success. Not a big
> > deal but for initial debugging it might be useful.
> > 
> 
> I see. Thanks Honza. What you think about something like this:
> 
> 	while (node) {
> 		entry = rb_entry(node, struct quota_id, node);
> 
> 		if (id < entry->id)
> 			node = node->rb_left;
> 		else if (id > entry->id)
> 			node = node->rb_right;
> 		else
> 			goto found;
> 	}
> 
> 	/* We should always find the entry in the rb tree */
> 	WARN_ONCE(1, "quota id not in rb tree!\n", __func__)
> 	return -ENOENT;
> 
> 
> I am not sure if -ENOENT is the best error here though. It seems the most
> logical one, as -ENOMEM wouldn't make much sense, any suggestions if you don't
> agree with ENOENT?

Yeah, ENOENT looks good to me. I don't think the error code matters much
here as it is in the "should never happen territory".

								Honza
-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR

[PATCH 5/6] shmem: quota support

[cem]

From: Lukas Czerner <lczerner@redhat.com>

Now the basic infra-structure is in place, enable quota support for tmpfs.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
---
 Documentation/filesystems/tmpfs.rst |  12 +++
 include/linux/shmem_fs.h            |   9 ++
 mm/shmem.c                          | 162 ++++++++++++++++++++++++++--
 3 files changed, 174 insertions(+), 9 deletions(-)

diff --git a/Documentation/filesystems/tmpfs.rst b/Documentation/filesystems/tmpfs.rst
index 0408c245785e3..3f8d89bb7e1a5 100644
--- a/Documentation/filesystems/tmpfs.rst
+++ b/Documentation/filesystems/tmpfs.rst
@@ -86,6 +86,18 @@ use up all the memory on the machine; but enhances the scalability of
 that instance in a system with many CPUs making intensive use of it.
 
 
+tmpfs also supports quota with the following mount options
+
+========  =============================================================
+quota     User and group quota accounting and enforcement is enabled on
+          the mount. Tmpfs is using hidden system quota files that are
+          initialized on mount.
+usrquota  User quota accounting and enforcement is enabled on the
+          mount.
+grpquota  Group quota accounting and enforcement is enabled on the
+          mount.
+========  =============================================================
+
 tmpfs has a mount option to set the NUMA memory allocation policy for
 all files in that instance (if CONFIG_NUMA is enabled) - which can be
 adjusted on the fly via 'mount -o remount ...'
diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index cf38381bdb4c1..3e7e18726feb5 100644
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -26,6 +26,9 @@ struct shmem_inode_info {
 	atomic_t		stop_eviction;	/* hold when working on inode */
 	struct timespec64	i_crtime;	/* file creation time */
 	unsigned int		fsflags;	/* flags for FS_IOC_[SG]ETFLAGS */
+#ifdef CONFIG_TMPFS_QUOTA
+	struct dquot		*i_dquot[MAXQUOTAS];
+#endif
 	struct inode		vfs_inode;
 };
 
@@ -171,4 +174,10 @@ extern int shmem_mfill_atomic_pte(struct mm_struct *dst_mm, pmd_t *dst_pmd,
 #define SHMEM_QUOTA_MAX_SPC_LIMIT 0x7fffffffffffffffLL /* 2^63-1 */
 #define SHMEM_QUOTA_MAX_INO_LIMIT 0x7fffffffffffffffLL
 
+#ifdef CONFIG_TMPFS_QUOTA
+#define SHMEM_MAXQUOTAS 2
+extern const struct dquot_operations shmem_quota_operations;
+extern struct quota_format_type shmem_quota_format;
+#endif /* CONFIG_TMPFS_QUOTA */
+
 #endif
diff --git a/mm/shmem.c b/mm/shmem.c
index 88e13930fc013..d7529c883eaf5 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -79,6 +79,7 @@ static struct vfsmount *shm_mnt;
 #include <linux/userfaultfd_k.h>
 #include <linux/rmap.h>
 #include <linux/uuid.h>
+#include <linux/quotaops.h>
 
 #include <linux/uaccess.h>
 
@@ -116,10 +117,12 @@ struct shmem_options {
 	bool full_inums;
 	int huge;
 	int seen;
+	unsigned short quota_types;
 #define SHMEM_SEEN_BLOCKS 1
 #define SHMEM_SEEN_INODES 2
 #define SHMEM_SEEN_HUGE 4
 #define SHMEM_SEEN_INUMS 8
+#define SHMEM_SEEN_QUOTA 16
 };
 
 #ifdef CONFIG_TMPFS
@@ -211,8 +214,11 @@ static inline int shmem_inode_acct_block(struct inode *inode, long pages)
 		if (percpu_counter_compare(&sbinfo->used_blocks,
 					   sbinfo->max_blocks - pages) > 0)
 			goto unacct;
+		if ((err = dquot_alloc_block_nodirty(inode, pages)) != 0)
+			goto unacct;
 		percpu_counter_add(&sbinfo->used_blocks, pages);
-	}
+	} else if ((err = dquot_alloc_block_nodirty(inode, pages)) != 0)
+		goto unacct;
 
 	return 0;
 
@@ -226,6 +232,8 @@ static inline void shmem_inode_unacct_blocks(struct inode *inode, long pages)
 	struct shmem_inode_info *info = SHMEM_I(inode);
 	struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb);
 
+	dquot_free_block_nodirty(inode, pages);
+
 	if (sbinfo->max_blocks)
 		percpu_counter_sub(&sbinfo->used_blocks, pages);
 	shmem_unacct_blocks(info->flags, pages);
@@ -254,6 +262,47 @@ bool vma_is_shmem(struct vm_area_struct *vma)
 static LIST_HEAD(shmem_swaplist);
 static DEFINE_MUTEX(shmem_swaplist_mutex);
 
+#ifdef CONFIG_TMPFS_QUOTA
+
+static int shmem_enable_quotas(struct super_block *sb,
+			       unsigned short quota_types)
+{
+	int type, err = 0;
+
+	sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NOLIST_DIRTY;
+	for (type = 0; type < SHMEM_MAXQUOTAS; type++) {
+		if (!(quota_types & (1 << type)))
+			continue;
+		err = dquot_load_quota_sb(sb, type, QFMT_SHMEM,
+					  DQUOT_USAGE_ENABLED |
+					  DQUOT_LIMITS_ENABLED);
+		if (err)
+			goto out_err;
+	}
+	return 0;
+
+out_err:
+	pr_warn("tmpfs: failed to enable quota tracking (type=%d, err=%d)\n",
+		type, err);
+	for (type--; type >= 0; type--)
+		dquot_quota_off(sb, type);
+	return err;
+}
+
+static void shmem_disable_quotas(struct super_block *sb)
+{
+	int type;
+
+	for (type = 0; type < SHMEM_MAXQUOTAS; type++)
+		dquot_quota_off(sb, type);
+}
+
+static struct dquot **shmem_get_dquots(struct inode *inode)
+{
+	return SHMEM_I(inode)->i_dquot;
+}
+#endif /* CONFIG_TMPFS_QUOTA */
+
 /*
  * shmem_reserve_inode() performs bookkeeping to reserve a shmem inode, and
  * produces a novel ino for the newly allocated inode.
@@ -360,7 +409,6 @@ static void shmem_recalc_inode(struct inode *inode)
 	freed = info->alloced - info->swapped - inode->i_mapping->nrpages;
 	if (freed > 0) {
 		info->alloced -= freed;
-		inode->i_blocks -= freed * BLOCKS_PER_PAGE;
 		shmem_inode_unacct_blocks(inode, freed);
 	}
 }
@@ -378,7 +426,6 @@ bool shmem_charge(struct inode *inode, long pages)
 
 	spin_lock_irqsave(&info->lock, flags);
 	info->alloced += pages;
-	inode->i_blocks += pages * BLOCKS_PER_PAGE;
 	shmem_recalc_inode(inode);
 	spin_unlock_irqrestore(&info->lock, flags);
 
@@ -394,7 +441,6 @@ void shmem_uncharge(struct inode *inode, long pages)
 
 	spin_lock_irqsave(&info->lock, flags);
 	info->alloced -= pages;
-	inode->i_blocks -= pages * BLOCKS_PER_PAGE;
 	shmem_recalc_inode(inode);
 	spin_unlock_irqrestore(&info->lock, flags);
 
@@ -1133,6 +1179,15 @@ static int shmem_setattr(struct mnt_idmap *idmap,
 		}
 	}
 
+	/* Transfer quota accounting */
+	if (i_uid_needs_update(idmap, attr, inode) ||
+	    i_gid_needs_update(idmap, attr,inode)) {
+		error = dquot_transfer(idmap, inode, attr);
+
+		if (error)
+			return error;
+	}
+
 	setattr_copy(idmap, inode, attr);
 	if (attr->ia_valid & ATTR_MODE)
 		error = posix_acl_chmod(idmap, dentry, inode->i_mode);
@@ -1178,7 +1233,9 @@ static void shmem_evict_inode(struct inode *inode)
 	simple_xattrs_free(&info->xattrs);
 	WARN_ON(inode->i_blocks);
 	shmem_free_inode(inode->i_sb);
+	dquot_free_inode(inode);
 	clear_inode(inode);
+	dquot_drop(inode);
 }
 
 static int shmem_find_swap_entries(struct address_space *mapping,
@@ -1975,7 +2032,6 @@ static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index,
 
 	spin_lock_irq(&info->lock);
 	info->alloced += folio_nr_pages(folio);
-	inode->i_blocks += (blkcnt_t)BLOCKS_PER_PAGE << folio_order(folio);
 	shmem_recalc_inode(inode);
 	spin_unlock_irq(&info->lock);
 	alloced = true;
@@ -2346,9 +2402,10 @@ static void shmem_set_inode_flags(struct inode *inode, unsigned int fsflags)
 #define shmem_initxattrs NULL
 #endif
 
-static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block *sb,
-				     struct inode *dir, umode_t mode, dev_t dev,
-				     unsigned long flags)
+static struct inode *shmem_get_inode_noquota(struct mnt_idmap *idmap,
+					     struct super_block *sb,
+					     struct inode *dir, umode_t mode,
+					     dev_t dev, unsigned long flags)
 {
 	struct inode *inode;
 	struct shmem_inode_info *info;
@@ -2422,6 +2479,37 @@ static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block
 	return inode;
 }
 
+static struct inode *shmem_get_inode(struct mnt_idmap *idmap,
+				     struct super_block *sb, struct inode *dir,
+				     umode_t mode, dev_t dev, unsigned long flags)
+{
+	int err;
+	struct inode *inode;
+
+	inode = shmem_get_inode_noquota(idmap, sb, dir, mode, dev, flags);
+	if (IS_ERR(inode))
+		return inode;
+
+	err = dquot_initialize(inode);
+	if (err)
+		goto errout;
+
+	err = dquot_alloc_inode(inode);
+	if (err) {
+		dquot_drop(inode);
+		goto errout;
+	}
+	return inode;
+
+errout:
+	inode->i_flags |= S_NOQUOTA;
+	iput(inode);
+	shmem_free_inode(sb);
+	if (err)
+		return ERR_PTR(err);
+	return NULL;
+}
+
 #ifdef CONFIG_USERFAULTFD
 int shmem_mfill_atomic_pte(struct mm_struct *dst_mm,
 			   pmd_t *dst_pmd,
@@ -2525,7 +2613,6 @@ int shmem_mfill_atomic_pte(struct mm_struct *dst_mm,
 
 	spin_lock_irq(&info->lock);
 	info->alloced++;
-	inode->i_blocks += BLOCKS_PER_PAGE;
 	shmem_recalc_inode(inode);
 	spin_unlock_irq(&info->lock);
 
@@ -3372,6 +3459,7 @@ static ssize_t shmem_listxattr(struct dentry *dentry, char *buffer, size_t size)
 
 static const struct inode_operations shmem_short_symlink_operations = {
 	.getattr	= shmem_getattr,
+	.setattr	= shmem_setattr,
 	.get_link	= simple_get_link,
 #ifdef CONFIG_TMPFS_XATTR
 	.listxattr	= shmem_listxattr,
@@ -3380,6 +3468,7 @@ static const struct inode_operations shmem_short_symlink_operations = {
 
 static const struct inode_operations shmem_symlink_inode_operations = {
 	.getattr	= shmem_getattr,
+	.setattr	= shmem_setattr,
 	.get_link	= shmem_get_link,
 #ifdef CONFIG_TMPFS_XATTR
 	.listxattr	= shmem_listxattr,
@@ -3478,6 +3567,9 @@ enum shmem_param {
 	Opt_uid,
 	Opt_inode32,
 	Opt_inode64,
+	Opt_quota,
+	Opt_usrquota,
+	Opt_grpquota,
 };
 
 static const struct constant_table shmem_param_enums_huge[] = {
@@ -3499,6 +3591,11 @@ const struct fs_parameter_spec shmem_fs_parameters[] = {
 	fsparam_u32   ("uid",		Opt_uid),
 	fsparam_flag  ("inode32",	Opt_inode32),
 	fsparam_flag  ("inode64",	Opt_inode64),
+#ifdef CONFIG_TMPFS_QUOTA
+	fsparam_flag  ("quota",		Opt_quota),
+	fsparam_flag  ("usrquota",	Opt_usrquota),
+	fsparam_flag  ("grpquota",	Opt_grpquota),
+#endif
 	{}
 };
 
@@ -3582,6 +3679,18 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
 		ctx->full_inums = true;
 		ctx->seen |= SHMEM_SEEN_INUMS;
 		break;
+	case Opt_quota:
+		ctx->seen |= SHMEM_SEEN_QUOTA;
+		ctx->quota_types |= (QTYPE_MASK_USR | QTYPE_MASK_GRP);
+		break;
+	case Opt_usrquota:
+		ctx->seen |= SHMEM_SEEN_QUOTA;
+		ctx->quota_types |= QTYPE_MASK_USR;
+		break;
+	case Opt_grpquota:
+		ctx->seen |= SHMEM_SEEN_QUOTA;
+		ctx->quota_types |= QTYPE_MASK_GRP;
+		break;
 	}
 	return 0;
 
@@ -3681,6 +3790,12 @@ static int shmem_reconfigure(struct fs_context *fc)
 		goto out;
 	}
 
+	if (ctx->seen & SHMEM_SEEN_QUOTA &&
+	    !sb_any_quota_loaded(fc->root->d_sb)) {
+		err = "Cannot enable quota on remount";
+		goto out;
+	}
+
 	if (ctx->seen & SHMEM_SEEN_HUGE)
 		sbinfo->huge = ctx->huge;
 	if (ctx->seen & SHMEM_SEEN_INUMS)
@@ -3763,6 +3878,9 @@ static void shmem_put_super(struct super_block *sb)
 {
 	struct shmem_sb_info *sbinfo = SHMEM_SB(sb);
 
+#ifdef CONFIG_TMPFS_QUOTA
+	shmem_disable_quotas(sb);
+#endif
 	free_percpu(sbinfo->ino_batch);
 	percpu_counter_destroy(&sbinfo->used_blocks);
 	mpol_put(sbinfo->mpol);
@@ -3841,6 +3959,17 @@ static int shmem_fill_super(struct super_block *sb, struct fs_context *fc)
 #endif
 	uuid_gen(&sb->s_uuid);
 
+#ifdef CONFIG_TMPFS_QUOTA
+	if (ctx->seen & SHMEM_SEEN_QUOTA) {
+		sb->dq_op = &shmem_quota_operations;
+		sb->s_qcop = &dquot_quotactl_sysfile_ops;
+		sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
+
+		if (shmem_enable_quotas(sb, ctx->quota_types))
+			goto failed;
+	}
+#endif /* CONFIG_TMPFS_QUOTA */
+
 	inode = shmem_get_inode(&nop_mnt_idmap, sb, NULL, S_IFDIR | sbinfo->mode, 0,
 				VM_NORESERVE);
 	if (IS_ERR(inode)) {
@@ -4016,6 +4145,9 @@ static const struct super_operations shmem_ops = {
 #ifdef CONFIG_TMPFS
 	.statfs		= shmem_statfs,
 	.show_options	= shmem_show_options,
+#endif
+#ifdef CONFIG_TMPFS_QUOTA
+	.get_dquots	= shmem_get_dquots,
 #endif
 	.evict_inode	= shmem_evict_inode,
 	.drop_inode	= generic_delete_inode,
@@ -4082,6 +4214,14 @@ void __init shmem_init(void)
 
 	shmem_init_inodecache();
 
+#ifdef CONFIG_TMPFS_QUOTA
+	error = register_quota_format(&shmem_quota_format);
+	if (error < 0) {
+		pr_err("Could not register quota format\n");
+		goto out3;
+	}
+#endif
+
 	error = register_filesystem(&shmem_fs_type);
 	if (error) {
 		pr_err("Could not register tmpfs\n");
@@ -4106,6 +4246,10 @@ void __init shmem_init(void)
 out1:
 	unregister_filesystem(&shmem_fs_type);
 out2:
+#ifdef CONFIG_TMPFS_QUOTA
+	unregister_quota_format(&shmem_quota_format);
+#endif
+out3:
 	shmem_destroy_inodecache();
 	shm_mnt = ERR_PTR(error);
 }
-- 
2.30.2

Re: [PATCH 5/6] shmem: quota support

[kernel test robot]

Hi,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v6.3-rc5]
[cannot apply to akpm-mm/mm-everything next-20230403]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/cem-kernel-org/shmem-make-shmem_inode_acct_block-return-error/20230403-165022
patch link:    https://lore.kernel.org/r/20230403084759.884681-6-cem%40kernel.org
patch subject: [PATCH 5/6] shmem: quota support
config: i386-allnoconfig (https://download.01.org/0day-ci/archive/20230403/202304032216.0SXl7l2X-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/e060b9e86fd92d5e87f5b0c447e4bc610a3d3bbe
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review cem-kernel-org/shmem-make-shmem_inode_acct_block-return-error/20230403-165022
        git checkout e060b9e86fd92d5e87f5b0c447e4bc610a3d3bbe
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304032216.0SXl7l2X-lkp@intel.com/

All warnings (new ones prefixed by >>):

   mm/shmem.c: In function 'shmem_init':
>> mm/shmem.c:4252:1: warning: label 'out3' defined but not used [-Wunused-label]
    4252 | out3:
         | ^~~~


vim +/out3 +4252 mm/shmem.c

  4224	
  4225		error = register_filesystem(&shmem_fs_type);
  4226		if (error) {
  4227			pr_err("Could not register tmpfs\n");
  4228			goto out2;
  4229		}
  4230	
  4231		shm_mnt = kern_mount(&shmem_fs_type);
  4232		if (IS_ERR(shm_mnt)) {
  4233			error = PTR_ERR(shm_mnt);
  4234			pr_err("Could not kern_mount tmpfs\n");
  4235			goto out1;
  4236		}
  4237	
  4238	#ifdef CONFIG_TRANSPARENT_HUGEPAGE
  4239		if (has_transparent_hugepage() && shmem_huge > SHMEM_HUGE_DENY)
  4240			SHMEM_SB(shm_mnt->mnt_sb)->huge = shmem_huge;
  4241		else
  4242			shmem_huge = SHMEM_HUGE_NEVER; /* just in case it was patched */
  4243	#endif
  4244		return;
  4245	
  4246	out1:
  4247		unregister_filesystem(&shmem_fs_type);
  4248	out2:
  4249	#ifdef CONFIG_TMPFS_QUOTA
  4250		unregister_quota_format(&shmem_quota_format);
  4251	#endif
> 4252	out3:
  4253		shmem_destroy_inodecache();
  4254		shm_mnt = ERR_PTR(error);
  4255	}
  4256	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

Re: [PATCH 5/6] shmem: quota support

[Darrick J. Wong]

On Mon, Apr 03, 2023 at 10:47:58AM +0200, cem@kernel.org wrote:
> From: Lukas Czerner <lczerner@redhat.com>
> 
> Now the basic infra-structure is in place, enable quota support for tmpfs.
> 
> Signed-off-by: Lukas Czerner <lczerner@redhat.com>
> Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
> ---
>  Documentation/filesystems/tmpfs.rst |  12 +++
>  include/linux/shmem_fs.h            |   9 ++
>  mm/shmem.c                          | 162 ++++++++++++++++++++++++++--
>  3 files changed, 174 insertions(+), 9 deletions(-)
> 
> diff --git a/Documentation/filesystems/tmpfs.rst b/Documentation/filesystems/tmpfs.rst
> index 0408c245785e3..3f8d89bb7e1a5 100644
> --- a/Documentation/filesystems/tmpfs.rst
> +++ b/Documentation/filesystems/tmpfs.rst
> @@ -86,6 +86,18 @@ use up all the memory on the machine; but enhances the scalability of
>  that instance in a system with many CPUs making intensive use of it.
>  
>  
> +tmpfs also supports quota with the following mount options
> +
> +========  =============================================================
> +quota     User and group quota accounting and enforcement is enabled on
> +          the mount. Tmpfs is using hidden system quota files that are
> +          initialized on mount.
> +usrquota  User quota accounting and enforcement is enabled on the
> +          mount.
> +grpquota  Group quota accounting and enforcement is enabled on the
> +          mount.
> +========  =============================================================
> +
>  tmpfs has a mount option to set the NUMA memory allocation policy for
>  all files in that instance (if CONFIG_NUMA is enabled) - which can be
>  adjusted on the fly via 'mount -o remount ...'
> diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
> index cf38381bdb4c1..3e7e18726feb5 100644
> --- a/include/linux/shmem_fs.h
> +++ b/include/linux/shmem_fs.h
> @@ -26,6 +26,9 @@ struct shmem_inode_info {
>  	atomic_t		stop_eviction;	/* hold when working on inode */
>  	struct timespec64	i_crtime;	/* file creation time */
>  	unsigned int		fsflags;	/* flags for FS_IOC_[SG]ETFLAGS */
> +#ifdef CONFIG_TMPFS_QUOTA
> +	struct dquot		*i_dquot[MAXQUOTAS];

Why allocate three dquot pointers here...

> +#endif
>  	struct inode		vfs_inode;
>  };
>  
> @@ -171,4 +174,10 @@ extern int shmem_mfill_atomic_pte(struct mm_struct *dst_mm, pmd_t *dst_pmd,
>  #define SHMEM_QUOTA_MAX_SPC_LIMIT 0x7fffffffffffffffLL /* 2^63-1 */
>  #define SHMEM_QUOTA_MAX_INO_LIMIT 0x7fffffffffffffffLL
>  
> +#ifdef CONFIG_TMPFS_QUOTA
> +#define SHMEM_MAXQUOTAS 2

...when you're only allowing user and group quotas?

(Or: Why not allow project quotas?  But that's outside the scope you
defined.)

--D

> +extern const struct dquot_operations shmem_quota_operations;
> +extern struct quota_format_type shmem_quota_format;
> +#endif /* CONFIG_TMPFS_QUOTA */
> +
>  #endif
> diff --git a/mm/shmem.c b/mm/shmem.c
> index 88e13930fc013..d7529c883eaf5 100644
> --- a/mm/shmem.c
> +++ b/mm/shmem.c
> @@ -79,6 +79,7 @@ static struct vfsmount *shm_mnt;
>  #include <linux/userfaultfd_k.h>
>  #include <linux/rmap.h>
>  #include <linux/uuid.h>
> +#include <linux/quotaops.h>
>  
>  #include <linux/uaccess.h>
>  
> @@ -116,10 +117,12 @@ struct shmem_options {
>  	bool full_inums;
>  	int huge;
>  	int seen;
> +	unsigned short quota_types;
>  #define SHMEM_SEEN_BLOCKS 1
>  #define SHMEM_SEEN_INODES 2
>  #define SHMEM_SEEN_HUGE 4
>  #define SHMEM_SEEN_INUMS 8
> +#define SHMEM_SEEN_QUOTA 16
>  };
>  
>  #ifdef CONFIG_TMPFS
> @@ -211,8 +214,11 @@ static inline int shmem_inode_acct_block(struct inode *inode, long pages)
>  		if (percpu_counter_compare(&sbinfo->used_blocks,
>  					   sbinfo->max_blocks - pages) > 0)
>  			goto unacct;
> +		if ((err = dquot_alloc_block_nodirty(inode, pages)) != 0)
> +			goto unacct;
>  		percpu_counter_add(&sbinfo->used_blocks, pages);
> -	}
> +	} else if ((err = dquot_alloc_block_nodirty(inode, pages)) != 0)
> +		goto unacct;
>  
>  	return 0;
>  
> @@ -226,6 +232,8 @@ static inline void shmem_inode_unacct_blocks(struct inode *inode, long pages)
>  	struct shmem_inode_info *info = SHMEM_I(inode);
>  	struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb);
>  
> +	dquot_free_block_nodirty(inode, pages);
> +
>  	if (sbinfo->max_blocks)
>  		percpu_counter_sub(&sbinfo->used_blocks, pages);
>  	shmem_unacct_blocks(info->flags, pages);
> @@ -254,6 +262,47 @@ bool vma_is_shmem(struct vm_area_struct *vma)
>  static LIST_HEAD(shmem_swaplist);
>  static DEFINE_MUTEX(shmem_swaplist_mutex);
>  
> +#ifdef CONFIG_TMPFS_QUOTA
> +
> +static int shmem_enable_quotas(struct super_block *sb,
> +			       unsigned short quota_types)
> +{
> +	int type, err = 0;
> +
> +	sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NOLIST_DIRTY;
> +	for (type = 0; type < SHMEM_MAXQUOTAS; type++) {
> +		if (!(quota_types & (1 << type)))
> +			continue;
> +		err = dquot_load_quota_sb(sb, type, QFMT_SHMEM,
> +					  DQUOT_USAGE_ENABLED |
> +					  DQUOT_LIMITS_ENABLED);
> +		if (err)
> +			goto out_err;
> +	}
> +	return 0;
> +
> +out_err:
> +	pr_warn("tmpfs: failed to enable quota tracking (type=%d, err=%d)\n",
> +		type, err);
> +	for (type--; type >= 0; type--)
> +		dquot_quota_off(sb, type);
> +	return err;
> +}
> +
> +static void shmem_disable_quotas(struct super_block *sb)
> +{
> +	int type;
> +
> +	for (type = 0; type < SHMEM_MAXQUOTAS; type++)
> +		dquot_quota_off(sb, type);
> +}
> +
> +static struct dquot **shmem_get_dquots(struct inode *inode)
> +{
> +	return SHMEM_I(inode)->i_dquot;
> +}
> +#endif /* CONFIG_TMPFS_QUOTA */
> +
>  /*
>   * shmem_reserve_inode() performs bookkeeping to reserve a shmem inode, and
>   * produces a novel ino for the newly allocated inode.
> @@ -360,7 +409,6 @@ static void shmem_recalc_inode(struct inode *inode)
>  	freed = info->alloced - info->swapped - inode->i_mapping->nrpages;
>  	if (freed > 0) {
>  		info->alloced -= freed;
> -		inode->i_blocks -= freed * BLOCKS_PER_PAGE;
>  		shmem_inode_unacct_blocks(inode, freed);
>  	}
>  }
> @@ -378,7 +426,6 @@ bool shmem_charge(struct inode *inode, long pages)
>  
>  	spin_lock_irqsave(&info->lock, flags);
>  	info->alloced += pages;
> -	inode->i_blocks += pages * BLOCKS_PER_PAGE;
>  	shmem_recalc_inode(inode);
>  	spin_unlock_irqrestore(&info->lock, flags);
>  
> @@ -394,7 +441,6 @@ void shmem_uncharge(struct inode *inode, long pages)
>  
>  	spin_lock_irqsave(&info->lock, flags);
>  	info->alloced -= pages;
> -	inode->i_blocks -= pages * BLOCKS_PER_PAGE;
>  	shmem_recalc_inode(inode);
>  	spin_unlock_irqrestore(&info->lock, flags);
>  
> @@ -1133,6 +1179,15 @@ static int shmem_setattr(struct mnt_idmap *idmap,
>  		}
>  	}
>  
> +	/* Transfer quota accounting */
> +	if (i_uid_needs_update(idmap, attr, inode) ||
> +	    i_gid_needs_update(idmap, attr,inode)) {
> +		error = dquot_transfer(idmap, inode, attr);
> +
> +		if (error)
> +			return error;
> +	}
> +
>  	setattr_copy(idmap, inode, attr);
>  	if (attr->ia_valid & ATTR_MODE)
>  		error = posix_acl_chmod(idmap, dentry, inode->i_mode);
> @@ -1178,7 +1233,9 @@ static void shmem_evict_inode(struct inode *inode)
>  	simple_xattrs_free(&info->xattrs);
>  	WARN_ON(inode->i_blocks);
>  	shmem_free_inode(inode->i_sb);
> +	dquot_free_inode(inode);
>  	clear_inode(inode);
> +	dquot_drop(inode);
>  }
>  
>  static int shmem_find_swap_entries(struct address_space *mapping,
> @@ -1975,7 +2032,6 @@ static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index,
>  
>  	spin_lock_irq(&info->lock);
>  	info->alloced += folio_nr_pages(folio);
> -	inode->i_blocks += (blkcnt_t)BLOCKS_PER_PAGE << folio_order(folio);
>  	shmem_recalc_inode(inode);
>  	spin_unlock_irq(&info->lock);
>  	alloced = true;
> @@ -2346,9 +2402,10 @@ static void shmem_set_inode_flags(struct inode *inode, unsigned int fsflags)
>  #define shmem_initxattrs NULL
>  #endif
>  
> -static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block *sb,
> -				     struct inode *dir, umode_t mode, dev_t dev,
> -				     unsigned long flags)
> +static struct inode *shmem_get_inode_noquota(struct mnt_idmap *idmap,
> +					     struct super_block *sb,
> +					     struct inode *dir, umode_t mode,
> +					     dev_t dev, unsigned long flags)
>  {
>  	struct inode *inode;
>  	struct shmem_inode_info *info;
> @@ -2422,6 +2479,37 @@ static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block
>  	return inode;
>  }
>  
> +static struct inode *shmem_get_inode(struct mnt_idmap *idmap,
> +				     struct super_block *sb, struct inode *dir,
> +				     umode_t mode, dev_t dev, unsigned long flags)
> +{
> +	int err;
> +	struct inode *inode;
> +
> +	inode = shmem_get_inode_noquota(idmap, sb, dir, mode, dev, flags);
> +	if (IS_ERR(inode))
> +		return inode;
> +
> +	err = dquot_initialize(inode);
> +	if (err)
> +		goto errout;
> +
> +	err = dquot_alloc_inode(inode);
> +	if (err) {
> +		dquot_drop(inode);
> +		goto errout;
> +	}
> +	return inode;
> +
> +errout:
> +	inode->i_flags |= S_NOQUOTA;
> +	iput(inode);
> +	shmem_free_inode(sb);
> +	if (err)
> +		return ERR_PTR(err);
> +	return NULL;
> +}
> +
>  #ifdef CONFIG_USERFAULTFD
>  int shmem_mfill_atomic_pte(struct mm_struct *dst_mm,
>  			   pmd_t *dst_pmd,
> @@ -2525,7 +2613,6 @@ int shmem_mfill_atomic_pte(struct mm_struct *dst_mm,
>  
>  	spin_lock_irq(&info->lock);
>  	info->alloced++;
> -	inode->i_blocks += BLOCKS_PER_PAGE;
>  	shmem_recalc_inode(inode);
>  	spin_unlock_irq(&info->lock);
>  
> @@ -3372,6 +3459,7 @@ static ssize_t shmem_listxattr(struct dentry *dentry, char *buffer, size_t size)
>  
>  static const struct inode_operations shmem_short_symlink_operations = {
>  	.getattr	= shmem_getattr,
> +	.setattr	= shmem_setattr,
>  	.get_link	= simple_get_link,
>  #ifdef CONFIG_TMPFS_XATTR
>  	.listxattr	= shmem_listxattr,
> @@ -3380,6 +3468,7 @@ static const struct inode_operations shmem_short_symlink_operations = {
>  
>  static const struct inode_operations shmem_symlink_inode_operations = {
>  	.getattr	= shmem_getattr,
> +	.setattr	= shmem_setattr,
>  	.get_link	= shmem_get_link,
>  #ifdef CONFIG_TMPFS_XATTR
>  	.listxattr	= shmem_listxattr,
> @@ -3478,6 +3567,9 @@ enum shmem_param {
>  	Opt_uid,
>  	Opt_inode32,
>  	Opt_inode64,
> +	Opt_quota,
> +	Opt_usrquota,
> +	Opt_grpquota,
>  };
>  
>  static const struct constant_table shmem_param_enums_huge[] = {
> @@ -3499,6 +3591,11 @@ const struct fs_parameter_spec shmem_fs_parameters[] = {
>  	fsparam_u32   ("uid",		Opt_uid),
>  	fsparam_flag  ("inode32",	Opt_inode32),
>  	fsparam_flag  ("inode64",	Opt_inode64),
> +#ifdef CONFIG_TMPFS_QUOTA
> +	fsparam_flag  ("quota",		Opt_quota),
> +	fsparam_flag  ("usrquota",	Opt_usrquota),
> +	fsparam_flag  ("grpquota",	Opt_grpquota),
> +#endif
>  	{}
>  };
>  
> @@ -3582,6 +3679,18 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
>  		ctx->full_inums = true;
>  		ctx->seen |= SHMEM_SEEN_INUMS;
>  		break;
> +	case Opt_quota:
> +		ctx->seen |= SHMEM_SEEN_QUOTA;
> +		ctx->quota_types |= (QTYPE_MASK_USR | QTYPE_MASK_GRP);
> +		break;
> +	case Opt_usrquota:
> +		ctx->seen |= SHMEM_SEEN_QUOTA;
> +		ctx->quota_types |= QTYPE_MASK_USR;
> +		break;
> +	case Opt_grpquota:
> +		ctx->seen |= SHMEM_SEEN_QUOTA;
> +		ctx->quota_types |= QTYPE_MASK_GRP;
> +		break;
>  	}
>  	return 0;
>  
> @@ -3681,6 +3790,12 @@ static int shmem_reconfigure(struct fs_context *fc)
>  		goto out;
>  	}
>  
> +	if (ctx->seen & SHMEM_SEEN_QUOTA &&
> +	    !sb_any_quota_loaded(fc->root->d_sb)) {
> +		err = "Cannot enable quota on remount";
> +		goto out;
> +	}
> +
>  	if (ctx->seen & SHMEM_SEEN_HUGE)
>  		sbinfo->huge = ctx->huge;
>  	if (ctx->seen & SHMEM_SEEN_INUMS)
> @@ -3763,6 +3878,9 @@ static void shmem_put_super(struct super_block *sb)
>  {
>  	struct shmem_sb_info *sbinfo = SHMEM_SB(sb);
>  
> +#ifdef CONFIG_TMPFS_QUOTA
> +	shmem_disable_quotas(sb);
> +#endif
>  	free_percpu(sbinfo->ino_batch);
>  	percpu_counter_destroy(&sbinfo->used_blocks);
>  	mpol_put(sbinfo->mpol);
> @@ -3841,6 +3959,17 @@ static int shmem_fill_super(struct super_block *sb, struct fs_context *fc)
>  #endif
>  	uuid_gen(&sb->s_uuid);
>  
> +#ifdef CONFIG_TMPFS_QUOTA
> +	if (ctx->seen & SHMEM_SEEN_QUOTA) {
> +		sb->dq_op = &shmem_quota_operations;
> +		sb->s_qcop = &dquot_quotactl_sysfile_ops;
> +		sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
> +
> +		if (shmem_enable_quotas(sb, ctx->quota_types))
> +			goto failed;
> +	}
> +#endif /* CONFIG_TMPFS_QUOTA */
> +
>  	inode = shmem_get_inode(&nop_mnt_idmap, sb, NULL, S_IFDIR | sbinfo->mode, 0,
>  				VM_NORESERVE);
>  	if (IS_ERR(inode)) {
> @@ -4016,6 +4145,9 @@ static const struct super_operations shmem_ops = {
>  #ifdef CONFIG_TMPFS
>  	.statfs		= shmem_statfs,
>  	.show_options	= shmem_show_options,
> +#endif
> +#ifdef CONFIG_TMPFS_QUOTA
> +	.get_dquots	= shmem_get_dquots,
>  #endif
>  	.evict_inode	= shmem_evict_inode,
>  	.drop_inode	= generic_delete_inode,
> @@ -4082,6 +4214,14 @@ void __init shmem_init(void)
>  
>  	shmem_init_inodecache();
>  
> +#ifdef CONFIG_TMPFS_QUOTA
> +	error = register_quota_format(&shmem_quota_format);
> +	if (error < 0) {
> +		pr_err("Could not register quota format\n");
> +		goto out3;
> +	}
> +#endif
> +
>  	error = register_filesystem(&shmem_fs_type);
>  	if (error) {
>  		pr_err("Could not register tmpfs\n");
> @@ -4106,6 +4246,10 @@ void __init shmem_init(void)
>  out1:
>  	unregister_filesystem(&shmem_fs_type);
>  out2:
> +#ifdef CONFIG_TMPFS_QUOTA
> +	unregister_quota_format(&shmem_quota_format);
> +#endif
> +out3:
>  	shmem_destroy_inodecache();
>  	shm_mnt = ERR_PTR(error);
>  }
> -- 
> 2.30.2
> 

Re: [PATCH 5/6] shmem: quota support

[Carlos Maiolino]

Hi.

> >  	atomic_t		stop_eviction;	/* hold when working on inode */
> >  	struct timespec64	i_crtime;	/* file creation time */
> >  	unsigned int		fsflags;	/* flags for FS_IOC_[SG]ETFLAGS */
> > +#ifdef CONFIG_TMPFS_QUOTA
> > +	struct dquot		*i_dquot[MAXQUOTAS];
> 
> Why allocate three dquot pointers here...
> 
> > +#endif
> >  	struct inode		vfs_inode;
> >  };
> >
> > @@ -171,4 +174,10 @@ extern int shmem_mfill_atomic_pte(struct mm_struct *dst_mm, pmd_t *dst_pmd,
> >  #define SHMEM_QUOTA_MAX_SPC_LIMIT 0x7fffffffffffffffLL /* 2^63-1 */
> >  #define SHMEM_QUOTA_MAX_INO_LIMIT 0x7fffffffffffffffLL
> >
> > +#ifdef CONFIG_TMPFS_QUOTA
> > +#define SHMEM_MAXQUOTAS 2
> 
> ...when you're only allowing user and group quotas?

My bad, I should have used SHMEM_MAXQUOTAS to define the i_dquot

> 
> (Or: Why not allow project quotas?  But that's outside the scope you
> defined.)

This is indeed on my plan, which I want to do later, I want to deal with the
'avoid users to consume all memory' issue, then I want to add prjquotas here. I
want to limit the scope of this series by now to avoid it snowballing with more
and more features.

> 
> --D
> 
> > +extern const struct dquot_operations shmem_quota_operations;
> > +extern struct quota_format_type shmem_quota_format;
> > +#endif /* CONFIG_TMPFS_QUOTA */
> > +
> >  #endif
> > diff --git a/mm/shmem.c b/mm/shmem.c
> > index 88e13930fc013..d7529c883eaf5 100644
> > --- a/mm/shmem.c
> > +++ b/mm/shmem.c
> > @@ -79,6 +79,7 @@ static struct vfsmount *shm_mnt;
> >  #include <linux/userfaultfd_k.h>
> >  #include <linux/rmap.h>
> >  #include <linux/uuid.h>
> > +#include <linux/quotaops.h>
> >
> >  #include <linux/uaccess.h>
> >
> > @@ -116,10 +117,12 @@ struct shmem_options {
> >  	bool full_inums;
> >  	int huge;
> >  	int seen;
> > +	unsigned short quota_types;
> >  #define SHMEM_SEEN_BLOCKS 1
> >  #define SHMEM_SEEN_INODES 2
> >  #define SHMEM_SEEN_HUGE 4
> >  #define SHMEM_SEEN_INUMS 8
> > +#define SHMEM_SEEN_QUOTA 16
> >  };
> >
> >  #ifdef CONFIG_TMPFS
> > @@ -211,8 +214,11 @@ static inline int shmem_inode_acct_block(struct inode *inode, long pages)
> >  		if (percpu_counter_compare(&sbinfo->used_blocks,
> >  					   sbinfo->max_blocks - pages) > 0)
> >  			goto unacct;
> > +		if ((err = dquot_alloc_block_nodirty(inode, pages)) != 0)
> > +			goto unacct;
> >  		percpu_counter_add(&sbinfo->used_blocks, pages);
> > -	}
> > +	} else if ((err = dquot_alloc_block_nodirty(inode, pages)) != 0)
> > +		goto unacct;
> >
> >  	return 0;
> >
> > @@ -226,6 +232,8 @@ static inline void shmem_inode_unacct_blocks(struct inode *inode, long pages)
> >  	struct shmem_inode_info *info = SHMEM_I(inode);
> >  	struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb);
> >
> > +	dquot_free_block_nodirty(inode, pages);
> > +
> >  	if (sbinfo->max_blocks)
> >  		percpu_counter_sub(&sbinfo->used_blocks, pages);
> >  	shmem_unacct_blocks(info->flags, pages);
> > @@ -254,6 +262,47 @@ bool vma_is_shmem(struct vm_area_struct *vma)
> >  static LIST_HEAD(shmem_swaplist);
> >  static DEFINE_MUTEX(shmem_swaplist_mutex);
> >
> > +#ifdef CONFIG_TMPFS_QUOTA
> > +
> > +static int shmem_enable_quotas(struct super_block *sb,
> > +			       unsigned short quota_types)
> > +{
> > +	int type, err = 0;
> > +
> > +	sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NOLIST_DIRTY;
> > +	for (type = 0; type < SHMEM_MAXQUOTAS; type++) {
> > +		if (!(quota_types & (1 << type)))
> > +			continue;
> > +		err = dquot_load_quota_sb(sb, type, QFMT_SHMEM,
> > +					  DQUOT_USAGE_ENABLED |
> > +					  DQUOT_LIMITS_ENABLED);
> > +		if (err)
> > +			goto out_err;
> > +	}
> > +	return 0;
> > +
> > +out_err:
> > +	pr_warn("tmpfs: failed to enable quota tracking (type=%d, err=%d)\n",
> > +		type, err);
> > +	for (type--; type >= 0; type--)
> > +		dquot_quota_off(sb, type);
> > +	return err;
> > +}
> > +
> > +static void shmem_disable_quotas(struct super_block *sb)
> > +{
> > +	int type;
> > +
> > +	for (type = 0; type < SHMEM_MAXQUOTAS; type++)
> > +		dquot_quota_off(sb, type);
> > +}
> > +
> > +static struct dquot **shmem_get_dquots(struct inode *inode)
> > +{
> > +	return SHMEM_I(inode)->i_dquot;
> > +}
> > +#endif /* CONFIG_TMPFS_QUOTA */
> > +
> >  /*
> >   * shmem_reserve_inode() performs bookkeeping to reserve a shmem inode, and
> >   * produces a novel ino for the newly allocated inode.
> > @@ -360,7 +409,6 @@ static void shmem_recalc_inode(struct inode *inode)
> >  	freed = info->alloced - info->swapped - inode->i_mapping->nrpages;
> >  	if (freed > 0) {
> >  		info->alloced -= freed;
> > -		inode->i_blocks -= freed * BLOCKS_PER_PAGE;
> >  		shmem_inode_unacct_blocks(inode, freed);
> >  	}
> >  }
> > @@ -378,7 +426,6 @@ bool shmem_charge(struct inode *inode, long pages)
> >
> >  	spin_lock_irqsave(&info->lock, flags);
> >  	info->alloced += pages;
> > -	inode->i_blocks += pages * BLOCKS_PER_PAGE;
> >  	shmem_recalc_inode(inode);
> >  	spin_unlock_irqrestore(&info->lock, flags);
> >
> > @@ -394,7 +441,6 @@ void shmem_uncharge(struct inode *inode, long pages)
> >
> >  	spin_lock_irqsave(&info->lock, flags);
> >  	info->alloced -= pages;
> > -	inode->i_blocks -= pages * BLOCKS_PER_PAGE;
> >  	shmem_recalc_inode(inode);
> >  	spin_unlock_irqrestore(&info->lock, flags);
> >
> > @@ -1133,6 +1179,15 @@ static int shmem_setattr(struct mnt_idmap *idmap,
> >  		}
> >  	}
> >
> > +	/* Transfer quota accounting */
> > +	if (i_uid_needs_update(idmap, attr, inode) ||
> > +	    i_gid_needs_update(idmap, attr,inode)) {
> > +		error = dquot_transfer(idmap, inode, attr);
> > +
> > +		if (error)
> > +			return error;
> > +	}
> > +
> >  	setattr_copy(idmap, inode, attr);
> >  	if (attr->ia_valid & ATTR_MODE)
> >  		error = posix_acl_chmod(idmap, dentry, inode->i_mode);
> > @@ -1178,7 +1233,9 @@ static void shmem_evict_inode(struct inode *inode)
> >  	simple_xattrs_free(&info->xattrs);
> >  	WARN_ON(inode->i_blocks);
> >  	shmem_free_inode(inode->i_sb);
> > +	dquot_free_inode(inode);
> >  	clear_inode(inode);
> > +	dquot_drop(inode);
> >  }
> >
> >  static int shmem_find_swap_entries(struct address_space *mapping,
> > @@ -1975,7 +2032,6 @@ static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index,
> >
> >  	spin_lock_irq(&info->lock);
> >  	info->alloced += folio_nr_pages(folio);
> > -	inode->i_blocks += (blkcnt_t)BLOCKS_PER_PAGE << folio_order(folio);
> >  	shmem_recalc_inode(inode);
> >  	spin_unlock_irq(&info->lock);
> >  	alloced = true;
> > @@ -2346,9 +2402,10 @@ static void shmem_set_inode_flags(struct inode *inode, unsigned int fsflags)
> >  #define shmem_initxattrs NULL
> >  #endif
> >
> > -static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block *sb,
> > -				     struct inode *dir, umode_t mode, dev_t dev,
> > -				     unsigned long flags)
> > +static struct inode *shmem_get_inode_noquota(struct mnt_idmap *idmap,
> > +					     struct super_block *sb,
> > +					     struct inode *dir, umode_t mode,
> > +					     dev_t dev, unsigned long flags)
> >  {
> >  	struct inode *inode;
> >  	struct shmem_inode_info *info;
> > @@ -2422,6 +2479,37 @@ static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block
> >  	return inode;
> >  }
> >
> > +static struct inode *shmem_get_inode(struct mnt_idmap *idmap,
> > +				     struct super_block *sb, struct inode *dir,
> > +				     umode_t mode, dev_t dev, unsigned long flags)
> > +{
> > +	int err;
> > +	struct inode *inode;
> > +
> > +	inode = shmem_get_inode_noquota(idmap, sb, dir, mode, dev, flags);
> > +	if (IS_ERR(inode))
> > +		return inode;
> > +
> > +	err = dquot_initialize(inode);
> > +	if (err)
> > +		goto errout;
> > +
> > +	err = dquot_alloc_inode(inode);
> > +	if (err) {
> > +		dquot_drop(inode);
> > +		goto errout;
> > +	}
> > +	return inode;
> > +
> > +errout:
> > +	inode->i_flags |= S_NOQUOTA;
> > +	iput(inode);
> > +	shmem_free_inode(sb);
> > +	if (err)
> > +		return ERR_PTR(err);
> > +	return NULL;
> > +}
> > +
> >  #ifdef CONFIG_USERFAULTFD
> >  int shmem_mfill_atomic_pte(struct mm_struct *dst_mm,
> >  			   pmd_t *dst_pmd,
> > @@ -2525,7 +2613,6 @@ int shmem_mfill_atomic_pte(struct mm_struct *dst_mm,
> >
> >  	spin_lock_irq(&info->lock);
> >  	info->alloced++;
> > -	inode->i_blocks += BLOCKS_PER_PAGE;
> >  	shmem_recalc_inode(inode);
> >  	spin_unlock_irq(&info->lock);
> >
> > @@ -3372,6 +3459,7 @@ static ssize_t shmem_listxattr(struct dentry *dentry, char *buffer, size_t size)
> >
> >  static const struct inode_operations shmem_short_symlink_operations = {
> >  	.getattr	= shmem_getattr,
> > +	.setattr	= shmem_setattr,
> >  	.get_link	= simple_get_link,
> >  #ifdef CONFIG_TMPFS_XATTR
> >  	.listxattr	= shmem_listxattr,
> > @@ -3380,6 +3468,7 @@ static const struct inode_operations shmem_short_symlink_operations = {
> >
> >  static const struct inode_operations shmem_symlink_inode_operations = {
> >  	.getattr	= shmem_getattr,
> > +	.setattr	= shmem_setattr,
> >  	.get_link	= shmem_get_link,
> >  #ifdef CONFIG_TMPFS_XATTR
> >  	.listxattr	= shmem_listxattr,
> > @@ -3478,6 +3567,9 @@ enum shmem_param {
> >  	Opt_uid,
> >  	Opt_inode32,
> >  	Opt_inode64,
> > +	Opt_quota,
> > +	Opt_usrquota,
> > +	Opt_grpquota,
> >  };
> >
> >  static const struct constant_table shmem_param_enums_huge[] = {
> > @@ -3499,6 +3591,11 @@ const struct fs_parameter_spec shmem_fs_parameters[] = {
> >  	fsparam_u32   ("uid",		Opt_uid),
> >  	fsparam_flag  ("inode32",	Opt_inode32),
> >  	fsparam_flag  ("inode64",	Opt_inode64),
> > +#ifdef CONFIG_TMPFS_QUOTA
> > +	fsparam_flag  ("quota",		Opt_quota),
> > +	fsparam_flag  ("usrquota",	Opt_usrquota),
> > +	fsparam_flag  ("grpquota",	Opt_grpquota),
> > +#endif
> >  	{}
> >  };
> >
> > @@ -3582,6 +3679,18 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
> >  		ctx->full_inums = true;
> >  		ctx->seen |= SHMEM_SEEN_INUMS;
> >  		break;
> > +	case Opt_quota:
> > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > +		ctx->quota_types |= (QTYPE_MASK_USR | QTYPE_MASK_GRP);
> > +		break;
> > +	case Opt_usrquota:
> > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > +		ctx->quota_types |= QTYPE_MASK_USR;
> > +		break;
> > +	case Opt_grpquota:
> > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > +		ctx->quota_types |= QTYPE_MASK_GRP;
> > +		break;
> >  	}
> >  	return 0;
> >
> > @@ -3681,6 +3790,12 @@ static int shmem_reconfigure(struct fs_context *fc)
> >  		goto out;
> >  	}
> >
> > +	if (ctx->seen & SHMEM_SEEN_QUOTA &&
> > +	    !sb_any_quota_loaded(fc->root->d_sb)) {
> > +		err = "Cannot enable quota on remount";
> > +		goto out;
> > +	}
> > +
> >  	if (ctx->seen & SHMEM_SEEN_HUGE)
> >  		sbinfo->huge = ctx->huge;
> >  	if (ctx->seen & SHMEM_SEEN_INUMS)
> > @@ -3763,6 +3878,9 @@ static void shmem_put_super(struct super_block *sb)
> >  {
> >  	struct shmem_sb_info *sbinfo = SHMEM_SB(sb);
> >
> > +#ifdef CONFIG_TMPFS_QUOTA
> > +	shmem_disable_quotas(sb);
> > +#endif
> >  	free_percpu(sbinfo->ino_batch);
> >  	percpu_counter_destroy(&sbinfo->used_blocks);
> >  	mpol_put(sbinfo->mpol);
> > @@ -3841,6 +3959,17 @@ static int shmem_fill_super(struct super_block *sb, struct fs_context *fc)
> >  #endif
> >  	uuid_gen(&sb->s_uuid);
> >
> > +#ifdef CONFIG_TMPFS_QUOTA
> > +	if (ctx->seen & SHMEM_SEEN_QUOTA) {
> > +		sb->dq_op = &shmem_quota_operations;
> > +		sb->s_qcop = &dquot_quotactl_sysfile_ops;
> > +		sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
> > +
> > +		if (shmem_enable_quotas(sb, ctx->quota_types))
> > +			goto failed;
> > +	}
> > +#endif /* CONFIG_TMPFS_QUOTA */
> > +
> >  	inode = shmem_get_inode(&nop_mnt_idmap, sb, NULL, S_IFDIR | sbinfo->mode, 0,
> >  				VM_NORESERVE);
> >  	if (IS_ERR(inode)) {
> > @@ -4016,6 +4145,9 @@ static const struct super_operations shmem_ops = {
> >  #ifdef CONFIG_TMPFS
> >  	.statfs		= shmem_statfs,
> >  	.show_options	= shmem_show_options,
> > +#endif
> > +#ifdef CONFIG_TMPFS_QUOTA
> > +	.get_dquots	= shmem_get_dquots,
> >  #endif
> >  	.evict_inode	= shmem_evict_inode,
> >  	.drop_inode	= generic_delete_inode,
> > @@ -4082,6 +4214,14 @@ void __init shmem_init(void)
> >
> >  	shmem_init_inodecache();
> >
> > +#ifdef CONFIG_TMPFS_QUOTA
> > +	error = register_quota_format(&shmem_quota_format);
> > +	if (error < 0) {
> > +		pr_err("Could not register quota format\n");
> > +		goto out3;
> > +	}
> > +#endif
> > +
> >  	error = register_filesystem(&shmem_fs_type);
> >  	if (error) {
> >  		pr_err("Could not register tmpfs\n");
> > @@ -4106,6 +4246,10 @@ void __init shmem_init(void)
> >  out1:
> >  	unregister_filesystem(&shmem_fs_type);
> >  out2:
> > +#ifdef CONFIG_TMPFS_QUOTA
> > +	unregister_quota_format(&shmem_quota_format);
> > +#endif
> > +out3:
> >  	shmem_destroy_inodecache();
> >  	shm_mnt = ERR_PTR(error);
> >  }
> > --
> > 2.30.2
> >

-- 
Carlos Maiolino

Re: [PATCH 5/6] shmem: quota support

[Darrick J. Wong]

On Tue, Apr 04, 2023 at 03:41:19PM +0200, Carlos Maiolino wrote:
> Hi.
> 
> > >  	atomic_t		stop_eviction;	/* hold when working on inode */
> > >  	struct timespec64	i_crtime;	/* file creation time */
> > >  	unsigned int		fsflags;	/* flags for FS_IOC_[SG]ETFLAGS */
> > > +#ifdef CONFIG_TMPFS_QUOTA
> > > +	struct dquot		*i_dquot[MAXQUOTAS];
> > 
> > Why allocate three dquot pointers here...
> > 
> > > +#endif
> > >  	struct inode		vfs_inode;
> > >  };
> > >
> > > @@ -171,4 +174,10 @@ extern int shmem_mfill_atomic_pte(struct mm_struct *dst_mm, pmd_t *dst_pmd,
> > >  #define SHMEM_QUOTA_MAX_SPC_LIMIT 0x7fffffffffffffffLL /* 2^63-1 */
> > >  #define SHMEM_QUOTA_MAX_INO_LIMIT 0x7fffffffffffffffLL
> > >
> > > +#ifdef CONFIG_TMPFS_QUOTA
> > > +#define SHMEM_MAXQUOTAS 2
> > 
> > ...when you're only allowing user and group quotas?
> 
> My bad, I should have used SHMEM_MAXQUOTAS to define the i_dquot
> 
> > 
> > (Or: Why not allow project quotas?  But that's outside the scope you
> > defined.)
> 
> This is indeed on my plan, which I want to do later, I want to deal with the
> 'avoid users to consume all memory' issue, then I want to add prjquotas here. I
> want to limit the scope of this series by now to avoid it snowballing with more
> and more features.

Ok.  This all mostly looks fine to me ... to the extent that I know
anything about tmpfs. ;)

--D

> > 
> > --D
> > 
> > > +extern const struct dquot_operations shmem_quota_operations;
> > > +extern struct quota_format_type shmem_quota_format;
> > > +#endif /* CONFIG_TMPFS_QUOTA */
> > > +
> > >  #endif
> > > diff --git a/mm/shmem.c b/mm/shmem.c
> > > index 88e13930fc013..d7529c883eaf5 100644
> > > --- a/mm/shmem.c
> > > +++ b/mm/shmem.c
> > > @@ -79,6 +79,7 @@ static struct vfsmount *shm_mnt;
> > >  #include <linux/userfaultfd_k.h>
> > >  #include <linux/rmap.h>
> > >  #include <linux/uuid.h>
> > > +#include <linux/quotaops.h>
> > >
> > >  #include <linux/uaccess.h>
> > >
> > > @@ -116,10 +117,12 @@ struct shmem_options {
> > >  	bool full_inums;
> > >  	int huge;
> > >  	int seen;
> > > +	unsigned short quota_types;
> > >  #define SHMEM_SEEN_BLOCKS 1
> > >  #define SHMEM_SEEN_INODES 2
> > >  #define SHMEM_SEEN_HUGE 4
> > >  #define SHMEM_SEEN_INUMS 8
> > > +#define SHMEM_SEEN_QUOTA 16
> > >  };
> > >
> > >  #ifdef CONFIG_TMPFS
> > > @@ -211,8 +214,11 @@ static inline int shmem_inode_acct_block(struct inode *inode, long pages)
> > >  		if (percpu_counter_compare(&sbinfo->used_blocks,
> > >  					   sbinfo->max_blocks - pages) > 0)
> > >  			goto unacct;
> > > +		if ((err = dquot_alloc_block_nodirty(inode, pages)) != 0)
> > > +			goto unacct;
> > >  		percpu_counter_add(&sbinfo->used_blocks, pages);
> > > -	}
> > > +	} else if ((err = dquot_alloc_block_nodirty(inode, pages)) != 0)
> > > +		goto unacct;
> > >
> > >  	return 0;
> > >
> > > @@ -226,6 +232,8 @@ static inline void shmem_inode_unacct_blocks(struct inode *inode, long pages)
> > >  	struct shmem_inode_info *info = SHMEM_I(inode);
> > >  	struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb);
> > >
> > > +	dquot_free_block_nodirty(inode, pages);
> > > +
> > >  	if (sbinfo->max_blocks)
> > >  		percpu_counter_sub(&sbinfo->used_blocks, pages);
> > >  	shmem_unacct_blocks(info->flags, pages);
> > > @@ -254,6 +262,47 @@ bool vma_is_shmem(struct vm_area_struct *vma)
> > >  static LIST_HEAD(shmem_swaplist);
> > >  static DEFINE_MUTEX(shmem_swaplist_mutex);
> > >
> > > +#ifdef CONFIG_TMPFS_QUOTA
> > > +
> > > +static int shmem_enable_quotas(struct super_block *sb,
> > > +			       unsigned short quota_types)
> > > +{
> > > +	int type, err = 0;
> > > +
> > > +	sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NOLIST_DIRTY;
> > > +	for (type = 0; type < SHMEM_MAXQUOTAS; type++) {
> > > +		if (!(quota_types & (1 << type)))
> > > +			continue;
> > > +		err = dquot_load_quota_sb(sb, type, QFMT_SHMEM,
> > > +					  DQUOT_USAGE_ENABLED |
> > > +					  DQUOT_LIMITS_ENABLED);
> > > +		if (err)
> > > +			goto out_err;
> > > +	}
> > > +	return 0;
> > > +
> > > +out_err:
> > > +	pr_warn("tmpfs: failed to enable quota tracking (type=%d, err=%d)\n",
> > > +		type, err);
> > > +	for (type--; type >= 0; type--)
> > > +		dquot_quota_off(sb, type);
> > > +	return err;
> > > +}
> > > +
> > > +static void shmem_disable_quotas(struct super_block *sb)
> > > +{
> > > +	int type;
> > > +
> > > +	for (type = 0; type < SHMEM_MAXQUOTAS; type++)
> > > +		dquot_quota_off(sb, type);
> > > +}
> > > +
> > > +static struct dquot **shmem_get_dquots(struct inode *inode)
> > > +{
> > > +	return SHMEM_I(inode)->i_dquot;
> > > +}
> > > +#endif /* CONFIG_TMPFS_QUOTA */
> > > +
> > >  /*
> > >   * shmem_reserve_inode() performs bookkeeping to reserve a shmem inode, and
> > >   * produces a novel ino for the newly allocated inode.
> > > @@ -360,7 +409,6 @@ static void shmem_recalc_inode(struct inode *inode)
> > >  	freed = info->alloced - info->swapped - inode->i_mapping->nrpages;
> > >  	if (freed > 0) {
> > >  		info->alloced -= freed;
> > > -		inode->i_blocks -= freed * BLOCKS_PER_PAGE;
> > >  		shmem_inode_unacct_blocks(inode, freed);
> > >  	}
> > >  }
> > > @@ -378,7 +426,6 @@ bool shmem_charge(struct inode *inode, long pages)
> > >
> > >  	spin_lock_irqsave(&info->lock, flags);
> > >  	info->alloced += pages;
> > > -	inode->i_blocks += pages * BLOCKS_PER_PAGE;
> > >  	shmem_recalc_inode(inode);
> > >  	spin_unlock_irqrestore(&info->lock, flags);
> > >
> > > @@ -394,7 +441,6 @@ void shmem_uncharge(struct inode *inode, long pages)
> > >
> > >  	spin_lock_irqsave(&info->lock, flags);
> > >  	info->alloced -= pages;
> > > -	inode->i_blocks -= pages * BLOCKS_PER_PAGE;
> > >  	shmem_recalc_inode(inode);
> > >  	spin_unlock_irqrestore(&info->lock, flags);
> > >
> > > @@ -1133,6 +1179,15 @@ static int shmem_setattr(struct mnt_idmap *idmap,
> > >  		}
> > >  	}
> > >
> > > +	/* Transfer quota accounting */
> > > +	if (i_uid_needs_update(idmap, attr, inode) ||
> > > +	    i_gid_needs_update(idmap, attr,inode)) {
> > > +		error = dquot_transfer(idmap, inode, attr);
> > > +
> > > +		if (error)
> > > +			return error;
> > > +	}
> > > +
> > >  	setattr_copy(idmap, inode, attr);
> > >  	if (attr->ia_valid & ATTR_MODE)
> > >  		error = posix_acl_chmod(idmap, dentry, inode->i_mode);
> > > @@ -1178,7 +1233,9 @@ static void shmem_evict_inode(struct inode *inode)
> > >  	simple_xattrs_free(&info->xattrs);
> > >  	WARN_ON(inode->i_blocks);
> > >  	shmem_free_inode(inode->i_sb);
> > > +	dquot_free_inode(inode);
> > >  	clear_inode(inode);
> > > +	dquot_drop(inode);
> > >  }
> > >
> > >  static int shmem_find_swap_entries(struct address_space *mapping,
> > > @@ -1975,7 +2032,6 @@ static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index,
> > >
> > >  	spin_lock_irq(&info->lock);
> > >  	info->alloced += folio_nr_pages(folio);
> > > -	inode->i_blocks += (blkcnt_t)BLOCKS_PER_PAGE << folio_order(folio);
> > >  	shmem_recalc_inode(inode);
> > >  	spin_unlock_irq(&info->lock);
> > >  	alloced = true;
> > > @@ -2346,9 +2402,10 @@ static void shmem_set_inode_flags(struct inode *inode, unsigned int fsflags)
> > >  #define shmem_initxattrs NULL
> > >  #endif
> > >
> > > -static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block *sb,
> > > -				     struct inode *dir, umode_t mode, dev_t dev,
> > > -				     unsigned long flags)
> > > +static struct inode *shmem_get_inode_noquota(struct mnt_idmap *idmap,
> > > +					     struct super_block *sb,
> > > +					     struct inode *dir, umode_t mode,
> > > +					     dev_t dev, unsigned long flags)
> > >  {
> > >  	struct inode *inode;
> > >  	struct shmem_inode_info *info;
> > > @@ -2422,6 +2479,37 @@ static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block
> > >  	return inode;
> > >  }
> > >
> > > +static struct inode *shmem_get_inode(struct mnt_idmap *idmap,
> > > +				     struct super_block *sb, struct inode *dir,
> > > +				     umode_t mode, dev_t dev, unsigned long flags)
> > > +{
> > > +	int err;
> > > +	struct inode *inode;
> > > +
> > > +	inode = shmem_get_inode_noquota(idmap, sb, dir, mode, dev, flags);
> > > +	if (IS_ERR(inode))
> > > +		return inode;
> > > +
> > > +	err = dquot_initialize(inode);
> > > +	if (err)
> > > +		goto errout;
> > > +
> > > +	err = dquot_alloc_inode(inode);
> > > +	if (err) {
> > > +		dquot_drop(inode);
> > > +		goto errout;
> > > +	}
> > > +	return inode;
> > > +
> > > +errout:
> > > +	inode->i_flags |= S_NOQUOTA;
> > > +	iput(inode);
> > > +	shmem_free_inode(sb);
> > > +	if (err)
> > > +		return ERR_PTR(err);
> > > +	return NULL;
> > > +}
> > > +
> > >  #ifdef CONFIG_USERFAULTFD
> > >  int shmem_mfill_atomic_pte(struct mm_struct *dst_mm,
> > >  			   pmd_t *dst_pmd,
> > > @@ -2525,7 +2613,6 @@ int shmem_mfill_atomic_pte(struct mm_struct *dst_mm,
> > >
> > >  	spin_lock_irq(&info->lock);
> > >  	info->alloced++;
> > > -	inode->i_blocks += BLOCKS_PER_PAGE;
> > >  	shmem_recalc_inode(inode);
> > >  	spin_unlock_irq(&info->lock);
> > >
> > > @@ -3372,6 +3459,7 @@ static ssize_t shmem_listxattr(struct dentry *dentry, char *buffer, size_t size)
> > >
> > >  static const struct inode_operations shmem_short_symlink_operations = {
> > >  	.getattr	= shmem_getattr,
> > > +	.setattr	= shmem_setattr,
> > >  	.get_link	= simple_get_link,
> > >  #ifdef CONFIG_TMPFS_XATTR
> > >  	.listxattr	= shmem_listxattr,
> > > @@ -3380,6 +3468,7 @@ static const struct inode_operations shmem_short_symlink_operations = {
> > >
> > >  static const struct inode_operations shmem_symlink_inode_operations = {
> > >  	.getattr	= shmem_getattr,
> > > +	.setattr	= shmem_setattr,
> > >  	.get_link	= shmem_get_link,
> > >  #ifdef CONFIG_TMPFS_XATTR
> > >  	.listxattr	= shmem_listxattr,
> > > @@ -3478,6 +3567,9 @@ enum shmem_param {
> > >  	Opt_uid,
> > >  	Opt_inode32,
> > >  	Opt_inode64,
> > > +	Opt_quota,
> > > +	Opt_usrquota,
> > > +	Opt_grpquota,
> > >  };
> > >
> > >  static const struct constant_table shmem_param_enums_huge[] = {
> > > @@ -3499,6 +3591,11 @@ const struct fs_parameter_spec shmem_fs_parameters[] = {
> > >  	fsparam_u32   ("uid",		Opt_uid),
> > >  	fsparam_flag  ("inode32",	Opt_inode32),
> > >  	fsparam_flag  ("inode64",	Opt_inode64),
> > > +#ifdef CONFIG_TMPFS_QUOTA
> > > +	fsparam_flag  ("quota",		Opt_quota),
> > > +	fsparam_flag  ("usrquota",	Opt_usrquota),
> > > +	fsparam_flag  ("grpquota",	Opt_grpquota),
> > > +#endif
> > >  	{}
> > >  };
> > >
> > > @@ -3582,6 +3679,18 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
> > >  		ctx->full_inums = true;
> > >  		ctx->seen |= SHMEM_SEEN_INUMS;
> > >  		break;
> > > +	case Opt_quota:
> > > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > > +		ctx->quota_types |= (QTYPE_MASK_USR | QTYPE_MASK_GRP);
> > > +		break;
> > > +	case Opt_usrquota:
> > > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > > +		ctx->quota_types |= QTYPE_MASK_USR;
> > > +		break;
> > > +	case Opt_grpquota:
> > > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > > +		ctx->quota_types |= QTYPE_MASK_GRP;
> > > +		break;
> > >  	}
> > >  	return 0;
> > >
> > > @@ -3681,6 +3790,12 @@ static int shmem_reconfigure(struct fs_context *fc)
> > >  		goto out;
> > >  	}
> > >
> > > +	if (ctx->seen & SHMEM_SEEN_QUOTA &&
> > > +	    !sb_any_quota_loaded(fc->root->d_sb)) {
> > > +		err = "Cannot enable quota on remount";
> > > +		goto out;
> > > +	}
> > > +
> > >  	if (ctx->seen & SHMEM_SEEN_HUGE)
> > >  		sbinfo->huge = ctx->huge;
> > >  	if (ctx->seen & SHMEM_SEEN_INUMS)
> > > @@ -3763,6 +3878,9 @@ static void shmem_put_super(struct super_block *sb)
> > >  {
> > >  	struct shmem_sb_info *sbinfo = SHMEM_SB(sb);
> > >
> > > +#ifdef CONFIG_TMPFS_QUOTA
> > > +	shmem_disable_quotas(sb);
> > > +#endif
> > >  	free_percpu(sbinfo->ino_batch);
> > >  	percpu_counter_destroy(&sbinfo->used_blocks);
> > >  	mpol_put(sbinfo->mpol);
> > > @@ -3841,6 +3959,17 @@ static int shmem_fill_super(struct super_block *sb, struct fs_context *fc)
> > >  #endif
> > >  	uuid_gen(&sb->s_uuid);
> > >
> > > +#ifdef CONFIG_TMPFS_QUOTA
> > > +	if (ctx->seen & SHMEM_SEEN_QUOTA) {
> > > +		sb->dq_op = &shmem_quota_operations;
> > > +		sb->s_qcop = &dquot_quotactl_sysfile_ops;
> > > +		sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
> > > +
> > > +		if (shmem_enable_quotas(sb, ctx->quota_types))
> > > +			goto failed;
> > > +	}
> > > +#endif /* CONFIG_TMPFS_QUOTA */
> > > +
> > >  	inode = shmem_get_inode(&nop_mnt_idmap, sb, NULL, S_IFDIR | sbinfo->mode, 0,
> > >  				VM_NORESERVE);
> > >  	if (IS_ERR(inode)) {
> > > @@ -4016,6 +4145,9 @@ static const struct super_operations shmem_ops = {
> > >  #ifdef CONFIG_TMPFS
> > >  	.statfs		= shmem_statfs,
> > >  	.show_options	= shmem_show_options,
> > > +#endif
> > > +#ifdef CONFIG_TMPFS_QUOTA
> > > +	.get_dquots	= shmem_get_dquots,
> > >  #endif
> > >  	.evict_inode	= shmem_evict_inode,
> > >  	.drop_inode	= generic_delete_inode,
> > > @@ -4082,6 +4214,14 @@ void __init shmem_init(void)
> > >
> > >  	shmem_init_inodecache();
> > >
> > > +#ifdef CONFIG_TMPFS_QUOTA
> > > +	error = register_quota_format(&shmem_quota_format);
> > > +	if (error < 0) {
> > > +		pr_err("Could not register quota format\n");
> > > +		goto out3;
> > > +	}
> > > +#endif
> > > +
> > >  	error = register_filesystem(&shmem_fs_type);
> > >  	if (error) {
> > >  		pr_err("Could not register tmpfs\n");
> > > @@ -4106,6 +4246,10 @@ void __init shmem_init(void)
> > >  out1:
> > >  	unregister_filesystem(&shmem_fs_type);
> > >  out2:
> > > +#ifdef CONFIG_TMPFS_QUOTA
> > > +	unregister_quota_format(&shmem_quota_format);
> > > +#endif
> > > +out3:
> > >  	shmem_destroy_inodecache();
> > >  	shm_mnt = ERR_PTR(error);
> > >  }
> > > --
> > > 2.30.2
> > >
> 
> -- 
> Carlos Maiolino

Re: [PATCH 5/6] shmem: quota support

[kernel test robot]

Hi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on linus/master]
[also build test WARNING on v6.3-rc5]
[cannot apply to akpm-mm/mm-everything next-20230403]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/cem-kernel-org/shmem-make-shmem_inode_acct_block-return-error/20230403-165022
patch link:    https://lore.kernel.org/r/20230403084759.884681-6-cem%40kernel.org
patch subject: [PATCH 5/6] shmem: quota support
config: hexagon-randconfig-r045-20230403 (https://download.01.org/0day-ci/archive/20230404/202304040523.Z5vLqfkr-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/e060b9e86fd92d5e87f5b0c447e4bc610a3d3bbe
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review cem-kernel-org/shmem-make-shmem_inode_acct_block-return-error/20230403-165022
        git checkout e060b9e86fd92d5e87f5b0c447e4bc610a3d3bbe
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304040523.Z5vLqfkr-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from mm/shmem.c:29:
   In file included from include/linux/pagemap.h:11:
   In file included from include/linux/highmem.h:12:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:334:
   include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __raw_readb(PCI_IOBASE + addr);
                             ~~~~~~~~~~ ^
   include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
                                                           ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
                                                     ^
   In file included from mm/shmem.c:29:
   In file included from include/linux/pagemap.h:11:
   In file included from include/linux/highmem.h:12:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:334:
   include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
                                                           ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
                                                     ^
   In file included from mm/shmem.c:29:
   In file included from include/linux/pagemap.h:11:
   In file included from include/linux/highmem.h:12:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:334:
   include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writeb(value, PCI_IOBASE + addr);
                               ~~~~~~~~~~ ^
   include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
   include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
>> mm/shmem.c:4252:1: warning: unused label 'out3' [-Wunused-label]
   out3:
   ^~~~~
   mm/shmem.c:1534:20: warning: unused function 'shmem_show_mpol' [-Wunused-function]
   static inline void shmem_show_mpol(struct seq_file *seq, struct mempolicy *mpol)
                      ^
   8 warnings generated.


vim +/out3 +4252 mm/shmem.c

  4224	
  4225		error = register_filesystem(&shmem_fs_type);
  4226		if (error) {
  4227			pr_err("Could not register tmpfs\n");
  4228			goto out2;
  4229		}
  4230	
  4231		shm_mnt = kern_mount(&shmem_fs_type);
  4232		if (IS_ERR(shm_mnt)) {
  4233			error = PTR_ERR(shm_mnt);
  4234			pr_err("Could not kern_mount tmpfs\n");
  4235			goto out1;
  4236		}
  4237	
  4238	#ifdef CONFIG_TRANSPARENT_HUGEPAGE
  4239		if (has_transparent_hugepage() && shmem_huge > SHMEM_HUGE_DENY)
  4240			SHMEM_SB(shm_mnt->mnt_sb)->huge = shmem_huge;
  4241		else
  4242			shmem_huge = SHMEM_HUGE_NEVER; /* just in case it was patched */
  4243	#endif
  4244		return;
  4245	
  4246	out1:
  4247		unregister_filesystem(&shmem_fs_type);
  4248	out2:
  4249	#ifdef CONFIG_TMPFS_QUOTA
  4250		unregister_quota_format(&shmem_quota_format);
  4251	#endif
> 4252	out3:
  4253		shmem_destroy_inodecache();
  4254		shm_mnt = ERR_PTR(error);
  4255	}
  4256	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

Re: [PATCH 5/6] shmem: quota support

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 6962 bytes --]

Hello,

kernel test robot noticed "BUG:kernel_NULL_pointer_dereference,address" on:

commit: e060b9e86fd92d5e87f5b0c447e4bc610a3d3bbe ("[PATCH 5/6] shmem: quota support")
url: https://github.com/intel-lab-lkp/linux/commits/cem-kernel-org/shmem-make-shmem_inode_acct_block-return-error/20230403-165022
base: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git 7e364e56293bb98cae1b55fd835f5991c4e96e7d
patch link: https://lore.kernel.org/all/20230403084759.884681-6-cem@kernel.org/
patch subject: [PATCH 5/6] shmem: quota support

in testcase: boot

compiler: gcc-11
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G

(please refer to attached dmesg/kmsg for entire log/backtrace)


+---------------------------------------------+------------+------------+
|                                             | 2dc93cb54d | e060b9e86f |
+---------------------------------------------+------------+------------+
| boot_successes                              | 14         | 0          |
| boot_failures                               | 0          | 12         |
| BUG:kernel_NULL_pointer_dereference,address | 0          | 12         |
| Oops:#[##]                                  | 0          | 12         |
| Kernel_panic-not_syncing:Fatal_exception    | 0          | 12         |
+---------------------------------------------+------------+------------+


If you fix the issue, kindly add following tag
| Reported-by: kernel test robot <yujie.liu@intel.com>
| Link: https://lore.kernel.org/oe-lkp/202304041417.1199f918-yujie.liu@intel.com


[    8.196316][   T58] BUG: kernel NULL pointer dereference, address: 00000000
[    8.196987][   T58] #PF: supervisor read access in kernel mode
[    8.197478][   T58] #PF: error_code(0x0000) - not-present page
[    8.197962][   T58] *pde = 00000000
[    8.198265][   T58] Oops: 0000 [#1]
[    8.198562][   T58] CPU: 0 PID: 58 Comm: rm Not tainted 6.3.0-rc5-00005-ge060b9e86fd9 #1 b33e4695914080c2d2a6f223361e2009396ebd64
[    8.199506][   T58] EIP: 0x0
[ 8.199759][ T58] Code: Unable to access opcode bytes at 0xffffffd6.

Code starting with the faulting instruction
===========================================
[    8.200289][   T58] EAX: ee6a6388 EBX: ee6a6388 ECX: 00000007 EDX: c162e7c0
[    8.200854][   T58] ESI: ee5b89c0 EDI: ee6a6348 EBP: ee6adecc ESP: ee6adec8
[    8.201416][   T58] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068 EFLAGS: 00010246
[    8.202029][   T58] CR0: 80050033 CR2: ffffffd6 CR3: 2e5d5000 CR4: 00040690
[    8.207818][   T58] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[    8.208397][   T58] DR6: fffe0ff0 DR7: 00000400
[    8.208781][   T58] Call Trace:
[ 8.209049][ T58] i_dquot (fs/quota/dquot.c:940) 
[ 8.209367][ T58] dquot_drop (fs/quota/dquot.c:1610 fs/quota/dquot.c:1593) 
[ 8.209709][ T58] shmem_evict_inode (mm/shmem.c:1239 (discriminator 3)) 
[ 8.210105][ T58] ? _raw_spin_unlock (kernel/locking/spinlock.c:187) 
[ 8.210498][ T58] evict (fs/inode.c:665) 
[ 8.210806][ T58] iput (fs/inode.c:1776) 
[ 8.211107][ T58] do_unlinkat (fs/namei.c:4325) 
[ 8.211481][ T58] __ia32_sys_unlink (fs/namei.c:4362) 
[ 8.211879][ T58] __do_fast_syscall_32 (arch/x86/entry/common.c:112 arch/x86/entry/common.c:178) 
[ 8.212299][ T58] do_fast_syscall_32 (arch/x86/entry/common.c:203) 
[ 8.212698][ T58] do_SYSENTER_32 (arch/x86/entry/common.c:247) 
[ 8.213076][ T58] entry_SYSENTER_32 (arch/x86/entry/entry_32.S:867) 
[    8.213473][   T58] EIP: 0xb7ed356d
[ 8.213773][ T58] Code: c4 01 10 03 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d 76 00 58 b8 77 00 00 00 cd 80 90 8d 76
All code
========
   0:	c4 01 10 03          	(bad)
   4:	03 74 c0 01          	add    0x1(%rax,%rax,8),%esi
   8:	10 05 03 74 b8 01    	adc    %al,0x1b87403(%rip)        # 0x1b87411
   e:	10 06                	adc    %al,(%rsi)
  10:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
  14:	10 07                	adc    %al,(%rdi)
  16:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
  1a:	10 08                	adc    %cl,(%rax)
  1c:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  20:	00 51 52             	add    %dl,0x52(%rcx)
  23:	55                   	push   %rbp
  24:	89 e5                	mov    %esp,%ebp
  26:	0f 34                	sysenter
  28:	cd 80                	int    $0x80
  2a:*	5d                   	pop    %rbp		<-- trapping instruction
  2b:	5a                   	pop    %rdx
  2c:	59                   	pop    %rcx
  2d:	c3                   	ret
  2e:	90                   	nop
  2f:	90                   	nop
  30:	90                   	nop
  31:	90                   	nop
  32:	8d 76 00             	lea    0x0(%rsi),%esi
  35:	58                   	pop    %rax
  36:	b8 77 00 00 00       	mov    $0x77,%eax
  3b:	cd 80                	int    $0x80
  3d:	90                   	nop
  3e:	8d                   	.byte 0x8d
  3f:	76                   	.byte 0x76

Code starting with the faulting instruction
===========================================
   0:	5d                   	pop    %rbp
   1:	5a                   	pop    %rdx
   2:	59                   	pop    %rcx
   3:	c3                   	ret
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	8d 76 00             	lea    0x0(%rsi),%esi
   b:	58                   	pop    %rax
   c:	b8 77 00 00 00       	mov    $0x77,%eax
  11:	cd 80                	int    $0x80
  13:	90                   	nop
  14:	8d                   	.byte 0x8d
  15:	76                   	.byte 0x76
[    8.215315][   T58] EAX: ffffffda EBX: bfb99c97 ECX: bfb97fe0 EDX: 00000000
[    8.215899][   T58] ESI: bfb9814c EDI: bfb99c91 EBP: bfb97fb8 ESP: bfb97f98
[    8.216451][   T58] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00000282
[    8.217056][   T58] Modules linked in:
[    8.217386][   T58] CR2: 0000000000000000
[    8.217833][   T58] ---[ end trace 0000000000000000 ]---
[    8.218341][   T58] EIP: 0x0
[ 8.218608][ T58] Code: Unable to access opcode bytes at 0xffffffd6.

Code starting with the faulting instruction
===========================================


To reproduce:

        # build kernel
	cd linux
	cp config-6.3.0-rc5-00005-ge060b9e86fd9 .config
	make HOSTCC=gcc-11 CC=gcc-11 ARCH=i386 olddefconfig prepare modules_prepare bzImage modules
	make HOSTCC=gcc-11 CC=gcc-11 ARCH=i386 INSTALL_MOD_PATH=<mod-install-dir> modules_install
	cd <mod-install-dir>
	find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz


        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email

        # if come across any failure that blocks the test,
        # please remove ~/.lkp and /lkp dir to run from a clean state.


-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

[-- Attachment #2: config-6.3.0-rc5-00005-ge060b9e86fd9 --]
[-- Type: text/plain, Size: 135668 bytes --]

#
# Automatically generated file; DO NOT EDIT.
# Linux/i386 6.3.0-rc5 Kernel Configuration
#
CONFIG_CC_VERSION_TEXT="gcc-11 (Debian 11.3.0-8) 11.3.0"
CONFIG_CC_IS_GCC=y
CONFIG_GCC_VERSION=110300
CONFIG_CLANG_VERSION=0
CONFIG_AS_IS_GNU=y
CONFIG_AS_VERSION=23990
CONFIG_LD_IS_BFD=y
CONFIG_LD_VERSION=23990
CONFIG_LLD_VERSION=0
CONFIG_CC_CAN_LINK=y
CONFIG_CC_CAN_LINK_STATIC=y
CONFIG_CC_HAS_ASM_GOTO_OUTPUT=y
CONFIG_CC_HAS_ASM_GOTO_TIED_OUTPUT=y
CONFIG_CC_HAS_ASM_INLINE=y
CONFIG_CC_HAS_NO_PROFILE_FN_ATTR=y
CONFIG_PAHOLE_VERSION=125
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_TABLE_SORT=y
CONFIG_THREAD_INFO_IN_TASK=y

#
# General setup
#
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
# CONFIG_COMPILE_TEST is not set
# CONFIG_WERROR is not set
# CONFIG_UAPI_HEADER_TEST is not set
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_BUILD_SALT=""
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_BZIP2=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KERNEL_LZ4=y
CONFIG_HAVE_KERNEL_ZSTD=y
# CONFIG_KERNEL_GZIP is not set
# CONFIG_KERNEL_BZIP2 is not set
CONFIG_KERNEL_LZMA=y
# CONFIG_KERNEL_XZ is not set
# CONFIG_KERNEL_LZO is not set
# CONFIG_KERNEL_LZ4 is not set
# CONFIG_KERNEL_ZSTD is not set
CONFIG_DEFAULT_INIT=""
CONFIG_DEFAULT_HOSTNAME="(none)"
# CONFIG_SYSVIPC is not set
# CONFIG_POSIX_MQUEUE is not set
CONFIG_WATCH_QUEUE=y
# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_USELIB=y
# CONFIG_AUDIT is not set
CONFIG_HAVE_ARCH_AUDITSYSCALL=y

#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_GENERIC_IRQ_CHIP=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_SIM=y
CONFIG_IRQ_DOMAIN_HIERARCHY=y
CONFIG_IRQ_MSI_IOMMU=y
CONFIG_GENERIC_IRQ_RESERVATION_MODE=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_SPARSE_IRQ=y
# CONFIG_GENERIC_IRQ_DEBUGFS is not set
# end of IRQ subsystem

CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_ARCH_CLOCKSOURCE_INIT=y
CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE=y
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_HAVE_POSIX_CPU_TIMERS_TASK_WORK=y

#
# Timers subsystem
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ_COMMON=y
# CONFIG_HZ_PERIODIC is not set
CONFIG_NO_HZ_IDLE=y
CONFIG_NO_HZ=y
# CONFIG_HIGH_RES_TIMERS is not set
CONFIG_CLOCKSOURCE_WATCHDOG_MAX_SKEW_US=125
# end of Timers subsystem

CONFIG_BPF=y
CONFIG_HAVE_EBPF_JIT=y

#
# BPF subsystem
#
# CONFIG_BPF_SYSCALL is not set
# CONFIG_BPF_JIT is not set
# end of BPF subsystem

CONFIG_PREEMPT_VOLUNTARY_BUILD=y
# CONFIG_PREEMPT_NONE is not set
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set
CONFIG_PREEMPT_COUNT=y
# CONFIG_PREEMPT_DYNAMIC is not set

#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
CONFIG_IRQ_TIME_ACCOUNTING=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
# CONFIG_TASKSTATS is not set
CONFIG_PSI=y
# CONFIG_PSI_DEFAULT_DISABLED is not set
# end of CPU/Task time and stats accounting

#
# RCU Subsystem
#
CONFIG_TINY_RCU=y
CONFIG_RCU_EXPERT=y
CONFIG_SRCU=y
CONFIG_TINY_SRCU=y
CONFIG_TASKS_RCU_GENERIC=y
CONFIG_FORCE_TASKS_RCU=y
CONFIG_TASKS_RCU=y
CONFIG_FORCE_TASKS_RUDE_RCU=y
CONFIG_TASKS_RUDE_RCU=y
CONFIG_FORCE_TASKS_TRACE_RCU=y
CONFIG_TASKS_TRACE_RCU=y
CONFIG_RCU_NEED_SEGCBLIST=y
CONFIG_TASKS_TRACE_RCU_READ_MB=y
# end of RCU Subsystem

CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_IKHEADERS=m
CONFIG_LOG_BUF_SHIFT=20
CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13
CONFIG_PRINTK_INDEX=y
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y

#
# Scheduler features
#
# end of Scheduler features

CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH=y
CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough=5"
CONFIG_GCC11_NO_ARRAY_BOUNDS=y
CONFIG_GCC12_NO_ARRAY_BOUNDS=y
CONFIG_CC_NO_ARRAY_BOUNDS=y
CONFIG_CGROUPS=y
# CONFIG_CGROUP_FAVOR_DYNMODS is not set
# CONFIG_MEMCG is not set
# CONFIG_CGROUP_SCHED is not set
# CONFIG_CGROUP_PIDS is not set
# CONFIG_CGROUP_RDMA is not set
# CONFIG_CGROUP_FREEZER is not set
# CONFIG_CGROUP_HUGETLB is not set
# CONFIG_CGROUP_DEVICE is not set
# CONFIG_CGROUP_CPUACCT is not set
# CONFIG_CGROUP_PERF is not set
# CONFIG_CGROUP_MISC is not set
# CONFIG_CGROUP_DEBUG is not set
CONFIG_NAMESPACES=y
CONFIG_UTS_NS=y
# CONFIG_TIME_NS is not set
CONFIG_USER_NS=y
# CONFIG_PID_NS is not set
CONFIG_NET_NS=y
CONFIG_CHECKPOINT_RESTORE=y
# CONFIG_SCHED_AUTOGROUP is not set
# CONFIG_SYSFS_DEPRECATED is not set
CONFIG_RELAY=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_RD_GZIP=y
# CONFIG_RD_BZIP2 is not set
CONFIG_RD_LZMA=y
CONFIG_RD_XZ=y
# CONFIG_RD_LZO is not set
CONFIG_RD_LZ4=y
# CONFIG_RD_ZSTD is not set
CONFIG_BOOT_CONFIG=y
# CONFIG_BOOT_CONFIG_FORCE is not set
CONFIG_BOOT_CONFIG_EMBED=y
CONFIG_BOOT_CONFIG_EMBED_FILE=""
# CONFIG_INITRAMFS_PRESERVE_MTIME is not set
# CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE is not set
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_LD_ORPHAN_WARN=y
CONFIG_LD_ORPHAN_WARN_LEVEL="warn"
CONFIG_SYSCTL=y
CONFIG_HAVE_UID16=y
CONFIG_SYSCTL_EXCEPTION_TRACE=y
CONFIG_HAVE_PCSPKR_PLATFORM=y
CONFIG_EXPERT=y
CONFIG_UID16=y
CONFIG_MULTIUSER=y
# CONFIG_SGETMASK_SYSCALL is not set
CONFIG_SYSFS_SYSCALL=y
CONFIG_FHANDLE=y
# CONFIG_POSIX_TIMERS is not set
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_PCSPKR_PLATFORM=y
# CONFIG_BASE_FULL is not set
CONFIG_FUTEX=y
CONFIG_FUTEX_PI=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
# CONFIG_AIO is not set
CONFIG_IO_URING=y
# CONFIG_ADVISE_SYSCALLS is not set
# CONFIG_MEMBARRIER is not set
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_SELFTEST is not set
CONFIG_KALLSYMS_ALL=y
CONFIG_KALLSYMS_BASE_RELATIVE=y
CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y
CONFIG_KCMP=y
# CONFIG_RSEQ is not set
CONFIG_EMBEDDED=y
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_PERF_USE_VMALLOC=y
CONFIG_PC104=y

#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
CONFIG_DEBUG_PERF_USE_VMALLOC=y
# end of Kernel Performance Events And Counters

CONFIG_SYSTEM_DATA_VERIFICATION=y
# CONFIG_PROFILING is not set
CONFIG_TRACEPOINTS=y
# end of General setup

CONFIG_X86_32=y
CONFIG_X86=y
CONFIG_INSTRUCTION_DECODER=y
CONFIG_OUTPUT_FORMAT="elf32-i386"
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_MMU=y
CONFIG_ARCH_MMAP_RND_BITS_MIN=8
CONFIG_ARCH_MMAP_RND_BITS_MAX=16
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=8
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=16
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_BUG=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_PGTABLE_LEVELS=2
CONFIG_CC_HAS_SANE_STACKPROTECTOR=y

#
# Processor type and features
#
# CONFIG_SMP is not set
CONFIG_X86_FEATURE_NAMES=y
CONFIG_GOLDFISH=y
# CONFIG_X86_CPU_RESCTRL is not set
# CONFIG_X86_EXTENDED_PLATFORM is not set
# CONFIG_X86_INTEL_LPSS is not set
# CONFIG_X86_AMD_PLATFORM_DEVICE is not set
# CONFIG_IOSF_MBI is not set
CONFIG_X86_32_IRIS=m
# CONFIG_SCHED_OMIT_FRAME_POINTER is not set
CONFIG_HYPERVISOR_GUEST=y
CONFIG_PARAVIRT=y
# CONFIG_PARAVIRT_DEBUG is not set
CONFIG_X86_HV_CALLBACK_VECTOR=y
CONFIG_KVM_GUEST=y
CONFIG_ARCH_CPUIDLE_HALTPOLL=y
CONFIG_PVH=y
# CONFIG_PARAVIRT_TIME_ACCOUNTING is not set
CONFIG_PARAVIRT_CLOCK=y
# CONFIG_M486SX is not set
# CONFIG_M486 is not set
# CONFIG_M586 is not set
# CONFIG_M586TSC is not set
# CONFIG_M586MMX is not set
CONFIG_M686=y
# CONFIG_MPENTIUMII is not set
# CONFIG_MPENTIUMIII is not set
# CONFIG_MPENTIUMM is not set
# CONFIG_MPENTIUM4 is not set
# CONFIG_MK6 is not set
# CONFIG_MK7 is not set
# CONFIG_MK8 is not set
# CONFIG_MCRUSOE is not set
# CONFIG_MEFFICEON is not set
# CONFIG_MWINCHIPC6 is not set
# CONFIG_MWINCHIP3D is not set
# CONFIG_MELAN is not set
# CONFIG_MGEODEGX1 is not set
# CONFIG_MGEODE_LX is not set
# CONFIG_MCYRIXIII is not set
# CONFIG_MVIAC3_2 is not set
# CONFIG_MVIAC7 is not set
# CONFIG_MCORE2 is not set
# CONFIG_MATOM is not set
# CONFIG_X86_GENERIC is not set
CONFIG_X86_INTERNODE_CACHE_SHIFT=5
CONFIG_X86_L1_CACHE_SHIFT=5
CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_X86_TSC=y
CONFIG_X86_CMPXCHG64=y
CONFIG_X86_CMOV=y
CONFIG_X86_MINIMUM_CPU_FAMILY=6
CONFIG_X86_DEBUGCTLMSR=y
CONFIG_IA32_FEAT_CTL=y
CONFIG_X86_VMX_FEATURE_NAMES=y
CONFIG_PROCESSOR_SELECT=y
CONFIG_CPU_SUP_INTEL=y
# CONFIG_CPU_SUP_CYRIX_32 is not set
# CONFIG_CPU_SUP_AMD is not set
# CONFIG_CPU_SUP_HYGON is not set
# CONFIG_CPU_SUP_CENTAUR is not set
CONFIG_CPU_SUP_TRANSMETA_32=y
CONFIG_CPU_SUP_UMC_32=y
# CONFIG_CPU_SUP_ZHAOXIN is not set
CONFIG_CPU_SUP_VORTEX_32=y
CONFIG_HPET_TIMER=y
CONFIG_HPET_EMULATE_RTC=y
# CONFIG_DMI is not set
CONFIG_NR_CPUS_RANGE_BEGIN=1
CONFIG_NR_CPUS_RANGE_END=1
CONFIG_NR_CPUS_DEFAULT=1
CONFIG_NR_CPUS=1
# CONFIG_X86_UP_APIC is not set
# CONFIG_X86_MCE is not set

#
# Performance monitoring
#
CONFIG_PERF_EVENTS_INTEL_UNCORE=y
CONFIG_PERF_EVENTS_INTEL_RAPL=y
CONFIG_PERF_EVENTS_INTEL_CSTATE=y
# end of Performance monitoring

# CONFIG_X86_LEGACY_VM86 is not set
CONFIG_X86_16BIT=y
CONFIG_X86_ESPFIX32=y
# CONFIG_X86_IOPL_IOPERM is not set
CONFIG_TOSHIBA=y
# CONFIG_X86_REBOOTFIXUPS is not set
# CONFIG_MICROCODE is not set
CONFIG_X86_MSR=y
CONFIG_X86_CPUID=y
# CONFIG_NOHIGHMEM is not set
CONFIG_HIGHMEM4G=y
# CONFIG_HIGHMEM64G is not set
CONFIG_VMSPLIT_3G=y
# CONFIG_VMSPLIT_3G_OPT is not set
# CONFIG_VMSPLIT_2G is not set
# CONFIG_VMSPLIT_2G_OPT is not set
# CONFIG_VMSPLIT_1G is not set
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_HIGHMEM=y
CONFIG_X86_CPA_STATISTICS=y
CONFIG_ARCH_FLATMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ILLEGAL_POINTER_VALUE=0
CONFIG_HIGHPTE=y
# CONFIG_X86_CHECK_BIOS_CORRUPTION is not set
CONFIG_MTRR=y
CONFIG_MTRR_SANITIZER=y
CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=0
CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1
CONFIG_X86_PAT=y
CONFIG_ARCH_USES_PG_UNCACHED=y
# CONFIG_X86_UMIP is not set
CONFIG_CC_HAS_IBT=y
# CONFIG_X86_INTEL_TSX_MODE_OFF is not set
# CONFIG_X86_INTEL_TSX_MODE_ON is not set
CONFIG_X86_INTEL_TSX_MODE_AUTO=y
# CONFIG_EFI is not set
CONFIG_HZ_100=y
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=100
# CONFIG_KEXEC is not set
CONFIG_CRASH_DUMP=y
CONFIG_PHYSICAL_START=0x1000000
# CONFIG_RELOCATABLE is not set
CONFIG_PHYSICAL_ALIGN=0x200000
# CONFIG_COMPAT_VDSO is not set
# CONFIG_CMDLINE_BOOL is not set
CONFIG_MODIFY_LDT_SYSCALL=y
# CONFIG_STRICT_SIGALTSTACK_SIZE is not set
# end of Processor type and features

CONFIG_CC_HAS_SLS=y
CONFIG_CC_HAS_RETURN_THUNK=y
CONFIG_CC_HAS_ENTRY_PADDING=y
CONFIG_FUNCTION_PADDING_CFI=0
CONFIG_FUNCTION_PADDING_BYTES=4
# CONFIG_SPECULATION_MITIGATIONS is not set
CONFIG_ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE=y

#
# Power management and ACPI options
#
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
# CONFIG_SUSPEND_SKIP_SYNC is not set
CONFIG_PM_SLEEP=y
# CONFIG_PM_AUTOSLEEP is not set
# CONFIG_PM_USERSPACE_AUTOSLEEP is not set
# CONFIG_PM_WAKELOCKS is not set
CONFIG_PM=y
# CONFIG_PM_DEBUG is not set
# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
CONFIG_ARCH_SUPPORTS_ACPI=y
CONFIG_ACPI=y
CONFIG_ACPI_LEGACY_TABLES_LOOKUP=y
CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC=y
CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT=y
# CONFIG_ACPI_DEBUGGER is not set
CONFIG_ACPI_SPCR_TABLE=y
CONFIG_ACPI_SLEEP=y
CONFIG_ACPI_REV_OVERRIDE_POSSIBLE=y
# CONFIG_ACPI_EC_DEBUGFS is not set
CONFIG_ACPI_AC=y
CONFIG_ACPI_BATTERY=y
CONFIG_ACPI_BUTTON=y
CONFIG_ACPI_FAN=y
# CONFIG_ACPI_TAD is not set
# CONFIG_ACPI_DOCK is not set
CONFIG_ACPI_CPU_FREQ_PSS=y
CONFIG_ACPI_PROCESSOR_CSTATE=y
CONFIG_ACPI_PROCESSOR_IDLE=y
CONFIG_ACPI_PROCESSOR=y
# CONFIG_ACPI_IPMI is not set
# CONFIG_ACPI_PROCESSOR_AGGREGATOR is not set
CONFIG_ACPI_THERMAL=y
CONFIG_ARCH_HAS_ACPI_TABLE_UPGRADE=y
CONFIG_ACPI_TABLE_UPGRADE=y
# CONFIG_ACPI_DEBUG is not set
# CONFIG_ACPI_PCI_SLOT is not set
# CONFIG_ACPI_CONTAINER is not set
# CONFIG_ACPI_SBS is not set
# CONFIG_ACPI_HED is not set
# CONFIG_ACPI_CUSTOM_METHOD is not set
# CONFIG_ACPI_REDUCED_HARDWARE_ONLY is not set
CONFIG_HAVE_ACPI_APEI=y
CONFIG_HAVE_ACPI_APEI_NMI=y
# CONFIG_ACPI_APEI is not set
# CONFIG_ACPI_DPTF is not set
# CONFIG_ACPI_CONFIGFS is not set
# CONFIG_ACPI_FFH is not set
# CONFIG_PMIC_OPREGION is not set
CONFIG_ACPI_VIOT=y
CONFIG_X86_PM_TIMER=y
# CONFIG_APM is not set

#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set
# end of CPU Frequency scaling

#
# CPU Idle
#
CONFIG_CPU_IDLE=y
# CONFIG_CPU_IDLE_GOV_LADDER is not set
CONFIG_CPU_IDLE_GOV_MENU=y
# CONFIG_CPU_IDLE_GOV_TEO is not set
CONFIG_CPU_IDLE_GOV_HALTPOLL=y
CONFIG_HALTPOLL_CPUIDLE=y
# end of CPU Idle

# CONFIG_INTEL_IDLE is not set
# end of Power management and ACPI options

#
# Bus options (PCI etc.)
#
# CONFIG_PCI_GOBIOS is not set
# CONFIG_PCI_GOMMCONFIG is not set
# CONFIG_PCI_GODIRECT is not set
CONFIG_PCI_GOANY=y
CONFIG_PCI_BIOS=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_MMCONFIG=y
# CONFIG_PCI_CNB20LE_QUIRK is not set
CONFIG_ISA_BUS=y
CONFIG_ISA_DMA_API=y
# CONFIG_ISA is not set
# CONFIG_SCx200 is not set
# CONFIG_OLPC is not set
# CONFIG_ALIX is not set
# CONFIG_NET5501 is not set
# end of Bus options (PCI etc.)

#
# Binary Emulations
#
CONFIG_COMPAT_32=y
# end of Binary Emulations

CONFIG_HAVE_ATOMIC_IOMAP=y
CONFIG_HAVE_KVM=y
CONFIG_VIRTUALIZATION=y
CONFIG_AS_AVX512=y
CONFIG_AS_SHA1_NI=y
CONFIG_AS_SHA256_NI=y
CONFIG_AS_TPAUSE=y
CONFIG_AS_GFNI=y

#
# General architecture-dependent options
#
CONFIG_GENERIC_ENTRY=y
CONFIG_KPROBES=y
CONFIG_JUMP_LABEL=y
# CONFIG_STATIC_KEYS_SELFTEST is not set
# CONFIG_STATIC_CALL_SELFTEST is not set
CONFIG_OPTPROBES=y
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_KRETPROBES=y
CONFIG_KRETPROBE_ON_RETHOOK=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_KPROBES_ON_FTRACE=y
CONFIG_ARCH_CORRECT_STACKTRACE_ON_KRETPROBE=y
CONFIG_HAVE_FUNCTION_ERROR_INJECTION=y
CONFIG_HAVE_NMI=y
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_TRACE_IRQFLAGS_NMI_SUPPORT=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_CONTIGUOUS=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_ARCH_HAS_FORTIFY_SOURCE=y
CONFIG_ARCH_HAS_SET_MEMORY=y
CONFIG_ARCH_HAS_SET_DIRECT_MAP=y
CONFIG_HAVE_ARCH_THREAD_STRUCT_WHITELIST=y
CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT=y
CONFIG_ARCH_WANTS_NO_INSTR=y
CONFIG_ARCH_32BIT_OFF_T=y
CONFIG_HAVE_ASM_MODVERSIONS=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_RSEQ=y
CONFIG_HAVE_FUNCTION_ARG_ACCESS_API=y
CONFIG_HAVE_HW_BREAKPOINT=y
CONFIG_HAVE_MIXED_BREAKPOINTS_REGS=y
CONFIG_HAVE_USER_RETURN_NOTIFIER=y
CONFIG_HAVE_PERF_EVENTS_NMI=y
CONFIG_HAVE_HARDLOCKUP_DETECTOR_PERF=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_HAVE_ARCH_JUMP_LABEL_RELATIVE=y
CONFIG_MMU_GATHER_TABLE_FREE=y
CONFIG_MMU_GATHER_RCU_TABLE_FREE=y
CONFIG_MMU_GATHER_MERGE_VMAS=y
CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
CONFIG_ARCH_HAS_NMI_SAFE_THIS_CPU_OPS=y
CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y
CONFIG_HAVE_CMPXCHG_LOCAL=y
CONFIG_HAVE_CMPXCHG_DOUBLE=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_HAVE_ARCH_SECCOMP=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
# CONFIG_SECCOMP is not set
CONFIG_HAVE_ARCH_STACKLEAK=y
CONFIG_HAVE_STACKPROTECTOR=y
# CONFIG_STACKPROTECTOR is not set
CONFIG_ARCH_SUPPORTS_LTO_CLANG=y
CONFIG_ARCH_SUPPORTS_LTO_CLANG_THIN=y
CONFIG_LTO_NONE=y
CONFIG_HAVE_ARCH_WITHIN_STACK_FRAMES=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_MOVE_PUD=y
CONFIG_HAVE_MOVE_PMD=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_MODULES_USE_ELF_REL=y
CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK=y
CONFIG_SOFTIRQ_ON_OWN_STACK=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
CONFIG_HAVE_EXIT_THREAD=y
CONFIG_ARCH_MMAP_RND_BITS=8
CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
CONFIG_ISA_BUS_API=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_OLD_SIGACTION=y
CONFIG_COMPAT_32BIT_TIME=y
CONFIG_HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET=y
# CONFIG_RANDOMIZE_KSTACK_OFFSET is not set
CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
CONFIG_STRICT_KERNEL_RWX=y
CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y
CONFIG_STRICT_MODULE_RWX=y
CONFIG_HAVE_ARCH_PREL32_RELOCATIONS=y
CONFIG_LOCK_EVENT_COUNTS=y
CONFIG_ARCH_HAS_MEM_ENCRYPT=y
CONFIG_HAVE_STATIC_CALL=y
CONFIG_HAVE_PREEMPT_DYNAMIC=y
CONFIG_HAVE_PREEMPT_DYNAMIC_CALL=y
CONFIG_ARCH_WANT_LD_ORPHAN_WARN=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_ARCH_SPLIT_ARG64=y
CONFIG_ARCH_HAS_PARANOID_L1D_FLUSH=y
CONFIG_DYNAMIC_SIGFRAME=y

#
# GCOV-based kernel profiling
#
# CONFIG_GCOV_KERNEL is not set
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
# end of GCOV-based kernel profiling

CONFIG_HAVE_GCC_PLUGINS=y
# CONFIG_GCC_PLUGINS is not set
CONFIG_FUNCTION_ALIGNMENT_4B=y
CONFIG_FUNCTION_ALIGNMENT=4
# end of General architecture-dependent options

CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=1
CONFIG_MODULE_SIG_FORMAT=y
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_MODULE_FORCE_UNLOAD is not set
CONFIG_MODULE_UNLOAD_TAINT_TRACKING=y
# CONFIG_MODVERSIONS is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
CONFIG_MODULE_SIG=y
# CONFIG_MODULE_SIG_FORCE is not set
CONFIG_MODULE_SIG_ALL=y
# CONFIG_MODULE_SIG_SHA1 is not set
CONFIG_MODULE_SIG_SHA224=y
# CONFIG_MODULE_SIG_SHA256 is not set
# CONFIG_MODULE_SIG_SHA384 is not set
# CONFIG_MODULE_SIG_SHA512 is not set
CONFIG_MODULE_SIG_HASH="sha224"
CONFIG_MODULE_COMPRESS_NONE=y
# CONFIG_MODULE_COMPRESS_GZIP is not set
# CONFIG_MODULE_COMPRESS_XZ is not set
# CONFIG_MODULE_COMPRESS_ZSTD is not set
CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS=y
CONFIG_MODPROBE_PATH="/sbin/modprobe"
# CONFIG_TRIM_UNUSED_KSYMS is not set
CONFIG_MODULES_TREE_LOOKUP=y
# CONFIG_BLOCK is not set
CONFIG_ASN1=y
CONFIG_UNINLINE_SPIN_UNLOCK=y
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE=y
CONFIG_ARCH_HAS_SYNC_CORE_BEFORE_USERMODE=y
CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y
CONFIG_FREEZER=y

#
# Executable file formats
#
CONFIG_BINFMT_ELF=y
CONFIG_ELFCORE=y
CONFIG_BINFMT_SCRIPT=y
CONFIG_BINFMT_MISC=y
# CONFIG_COREDUMP is not set
# end of Executable file formats

#
# Memory Management options
#

#
# SLAB allocator options
#
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLOB_DEPRECATED is not set
# CONFIG_SLUB_TINY is not set
# CONFIG_SLAB_MERGE_DEFAULT is not set
CONFIG_SLAB_FREELIST_RANDOM=y
CONFIG_SLAB_FREELIST_HARDENED=y
# CONFIG_SLUB_STATS is not set
# end of SLAB allocator options

CONFIG_SHUFFLE_PAGE_ALLOCATOR=y
# CONFIG_COMPAT_BRK is not set
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_FLATMEM_MANUAL=y
# CONFIG_SPARSEMEM_MANUAL is not set
CONFIG_FLATMEM=y
CONFIG_SPARSEMEM_STATIC=y
CONFIG_HAVE_FAST_GUP=y
CONFIG_MEMORY_ISOLATION=y
CONFIG_EXCLUSIVE_SYSTEM_RAM=y
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_COMPACTION=y
CONFIG_COMPACT_UNEVICTABLE_DEFAULT=1
# CONFIG_PAGE_REPORTING is not set
CONFIG_MIGRATION=y
CONFIG_CONTIG_ALLOC=y
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
# CONFIG_TRANSPARENT_HUGEPAGE is not set
CONFIG_NEED_PER_CPU_KM=y
CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
CONFIG_CMA=y
CONFIG_CMA_DEBUG=y
CONFIG_CMA_DEBUGFS=y
# CONFIG_CMA_SYSFS is not set
CONFIG_CMA_AREAS=7
CONFIG_GENERIC_EARLY_IOREMAP=y
# CONFIG_IDLE_PAGE_TRACKING is not set
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
CONFIG_ARCH_HAS_CURRENT_STACK_POINTER=y
CONFIG_ARCH_HAS_ZONE_DMA_SET=y
# CONFIG_ZONE_DMA is not set
CONFIG_VM_EVENT_COUNTERS=y
# CONFIG_PERCPU_STATS is not set
# CONFIG_GUP_TEST is not set
CONFIG_ARCH_HAS_PTE_SPECIAL=y
CONFIG_KMAP_LOCAL=y
CONFIG_SECRETMEM=y
# CONFIG_USERFAULTFD is not set
CONFIG_LRU_GEN=y
CONFIG_LRU_GEN_ENABLED=y
CONFIG_LRU_GEN_STATS=y

#
# Data Access Monitoring
#
# CONFIG_DAMON is not set
# end of Data Access Monitoring
# end of Memory Management options

CONFIG_NET=y

#
# Networking options
#
CONFIG_PACKET=y
# CONFIG_PACKET_DIAG is not set
CONFIG_UNIX=y
CONFIG_UNIX_SCM=y
CONFIG_AF_UNIX_OOB=y
# CONFIG_UNIX_DIAG is not set
# CONFIG_TLS is not set
# CONFIG_XFRM_USER is not set
# CONFIG_NET_KEY is not set
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_ADVANCED_ROUTER is not set
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
# CONFIG_IP_PNP_BOOTP is not set
# CONFIG_IP_PNP_RARP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE_DEMUX is not set
CONFIG_NET_IP_TUNNEL=y
# CONFIG_SYN_COOKIES is not set
# CONFIG_NET_IPVTI is not set
# CONFIG_NET_FOU is not set
# CONFIG_NET_FOU_IP_TUNNELS is not set
# CONFIG_INET_AH is not set
# CONFIG_INET_ESP is not set
# CONFIG_INET_IPCOMP is not set
CONFIG_INET_TABLE_PERTURB_ORDER=16
CONFIG_INET_TUNNEL=y
CONFIG_INET_DIAG=y
CONFIG_INET_TCP_DIAG=y
# CONFIG_INET_UDP_DIAG is not set
# CONFIG_INET_RAW_DIAG is not set
# CONFIG_INET_DIAG_DESTROY is not set
# CONFIG_TCP_CONG_ADVANCED is not set
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
# CONFIG_TCP_MD5SIG is not set
CONFIG_IPV6=y
# CONFIG_IPV6_ROUTER_PREF is not set
# CONFIG_IPV6_OPTIMISTIC_DAD is not set
# CONFIG_INET6_AH is not set
# CONFIG_INET6_ESP is not set
# CONFIG_INET6_IPCOMP is not set
# CONFIG_IPV6_MIP6 is not set
# CONFIG_IPV6_VTI is not set
CONFIG_IPV6_SIT=y
# CONFIG_IPV6_SIT_6RD is not set
CONFIG_IPV6_NDISC_NODETYPE=y
# CONFIG_IPV6_TUNNEL is not set
# CONFIG_IPV6_MULTIPLE_TABLES is not set
# CONFIG_IPV6_MROUTE is not set
# CONFIG_IPV6_SEG6_LWTUNNEL is not set
# CONFIG_IPV6_SEG6_HMAC is not set
# CONFIG_IPV6_RPL_LWTUNNEL is not set
# CONFIG_IPV6_IOAM6_LWTUNNEL is not set
# CONFIG_NETLABEL is not set
# CONFIG_MPTCP is not set
# CONFIG_NETWORK_SECMARK is not set
# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
# CONFIG_NETFILTER is not set
# CONFIG_BPFILTER is not set
# CONFIG_IP_DCCP is not set
# CONFIG_IP_SCTP is not set
# CONFIG_RDS is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_L2TP is not set
# CONFIG_BRIDGE is not set
# CONFIG_NET_DSA is not set
# CONFIG_VLAN_8021Q is not set
# CONFIG_LLC2 is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_PHONET is not set
# CONFIG_6LOWPAN is not set
# CONFIG_IEEE802154 is not set
# CONFIG_NET_SCHED is not set
# CONFIG_DCB is not set
CONFIG_DNS_RESOLVER=m
# CONFIG_BATMAN_ADV is not set
# CONFIG_OPENVSWITCH is not set
# CONFIG_VSOCKETS is not set
# CONFIG_NETLINK_DIAG is not set
# CONFIG_MPLS is not set
# CONFIG_NET_NSH is not set
# CONFIG_HSR is not set
# CONFIG_NET_SWITCHDEV is not set
# CONFIG_NET_L3_MASTER_DEV is not set
# CONFIG_QRTR is not set
# CONFIG_NET_NCSI is not set
# CONFIG_CGROUP_NET_PRIO is not set
# CONFIG_CGROUP_NET_CLASSID is not set
CONFIG_NET_RX_BUSY_POLL=y
CONFIG_BQL=y

#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# CONFIG_NET_DROP_MONITOR is not set
# end of Network testing
# end of Networking options

# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_BT is not set
# CONFIG_AF_RXRPC is not set
# CONFIG_AF_KCM is not set
# CONFIG_MCTP is not set
CONFIG_WIRELESS=y
# CONFIG_CFG80211 is not set

#
# CFG80211 needs to be enabled for MAC80211
#
CONFIG_MAC80211_STA_HASH_MAX_SIZE=0
# CONFIG_RFKILL is not set
CONFIG_NET_9P=y
CONFIG_NET_9P_FD=y
CONFIG_NET_9P_VIRTIO=y
# CONFIG_NET_9P_DEBUG is not set
# CONFIG_CAIF is not set
# CONFIG_CEPH_LIB is not set
# CONFIG_NFC is not set
# CONFIG_PSAMPLE is not set
# CONFIG_NET_IFE is not set
# CONFIG_LWTUNNEL is not set
CONFIG_DST_CACHE=y
CONFIG_GRO_CELLS=y
CONFIG_FAILOVER=m
CONFIG_ETHTOOL_NETLINK=y

#
# Device Drivers
#
CONFIG_HAVE_EISA=y
CONFIG_EISA=y
# CONFIG_EISA_VLB_PRIMING is not set
CONFIG_EISA_PCI_EISA=y
CONFIG_EISA_VIRTUAL_ROOT=y
# CONFIG_EISA_NAMES is not set
CONFIG_HAVE_PCI=y
CONFIG_PCI=y
CONFIG_PCI_DOMAINS=y
# CONFIG_PCIEPORTBUS is not set
CONFIG_PCIEASPM=y
CONFIG_PCIEASPM_DEFAULT=y
# CONFIG_PCIEASPM_POWERSAVE is not set
# CONFIG_PCIEASPM_POWER_SUPERSAVE is not set
# CONFIG_PCIEASPM_PERFORMANCE is not set
# CONFIG_PCIE_PTM is not set
# CONFIG_PCI_MSI is not set
CONFIG_PCI_QUIRKS=y
# CONFIG_PCI_DEBUG is not set
# CONFIG_PCI_STUB is not set
CONFIG_PCI_LOCKLESS_CONFIG=y
# CONFIG_PCI_IOV is not set
# CONFIG_PCI_PRI is not set
# CONFIG_PCI_PASID is not set
CONFIG_PCI_LABEL=y
# CONFIG_PCIE_BUS_TUNE_OFF is not set
CONFIG_PCIE_BUS_DEFAULT=y
# CONFIG_PCIE_BUS_SAFE is not set
# CONFIG_PCIE_BUS_PERFORMANCE is not set
# CONFIG_PCIE_BUS_PEER2PEER is not set
CONFIG_VGA_ARB=y
CONFIG_VGA_ARB_MAX_GPUS=16
# CONFIG_HOTPLUG_PCI is not set

#
# PCI controller drivers
#
# CONFIG_PCI_FTPCI100 is not set
# CONFIG_PCI_HOST_GENERIC is not set

#
# DesignWare PCI Core Support
#
# end of DesignWare PCI Core Support

#
# Mobiveil PCIe Core Support
#
# end of Mobiveil PCIe Core Support

#
# Cadence PCIe controllers support
#
# CONFIG_PCIE_CADENCE_PLAT_HOST is not set
# CONFIG_PCI_J721E_HOST is not set
# end of Cadence PCIe controllers support
# end of PCI controller drivers

#
# PCI Endpoint
#
# CONFIG_PCI_ENDPOINT is not set
# end of PCI Endpoint

#
# PCI switch controller drivers
#
# CONFIG_PCI_SW_SWITCHTEC is not set
# end of PCI switch controller drivers

# CONFIG_CXL_BUS is not set
# CONFIG_PCCARD is not set
# CONFIG_RAPIDIO is not set

#
# Generic Driver Options
#
CONFIG_UEVENT_HELPER=y
CONFIG_UEVENT_HELPER_PATH=""
CONFIG_DEVTMPFS=y
# CONFIG_DEVTMPFS_MOUNT is not set
CONFIG_DEVTMPFS_SAFE=y
CONFIG_STANDALONE=y
# CONFIG_PREVENT_FIRMWARE_BUILD is not set

#
# Firmware loader
#
CONFIG_FW_LOADER=y
CONFIG_FW_LOADER_PAGED_BUF=y
CONFIG_FW_LOADER_SYSFS=y
CONFIG_EXTRA_FIRMWARE=""
CONFIG_FW_LOADER_USER_HELPER=y
CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y
CONFIG_FW_LOADER_COMPRESS=y
CONFIG_FW_LOADER_COMPRESS_XZ=y
# CONFIG_FW_LOADER_COMPRESS_ZSTD is not set
CONFIG_FW_CACHE=y
CONFIG_FW_UPLOAD=y
# end of Firmware loader

CONFIG_WANT_DEV_COREDUMP=y
# CONFIG_ALLOW_DEV_COREDUMP is not set
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set
# CONFIG_TEST_ASYNC_DRIVER_PROBE is not set
CONFIG_GENERIC_CPU_AUTOPROBE=y
CONFIG_GENERIC_CPU_VULNERABILITIES=y
CONFIG_SOC_BUS=y
CONFIG_REGMAP=y
CONFIG_REGMAP_I2C=y
CONFIG_REGMAP_SPMI=m
CONFIG_REGMAP_W1=m
CONFIG_REGMAP_MMIO=y
CONFIG_REGMAP_IRQ=y
CONFIG_REGMAP_SCCB=y
CONFIG_DMA_SHARED_BUFFER=y
# CONFIG_DMA_FENCE_TRACE is not set
# end of Generic Driver Options

#
# Bus devices
#
CONFIG_MHI_BUS=y
# CONFIG_MHI_BUS_DEBUG is not set
# CONFIG_MHI_BUS_PCI_GENERIC is not set
# CONFIG_MHI_BUS_EP is not set
# end of Bus devices

# CONFIG_CONNECTOR is not set

#
# Firmware Drivers
#

#
# ARM System Control and Management Interface Protocol
#
# end of ARM System Control and Management Interface Protocol

# CONFIG_EDD is not set
CONFIG_FIRMWARE_MEMMAP=y
CONFIG_FW_CFG_SYSFS=m
# CONFIG_FW_CFG_SYSFS_CMDLINE is not set
# CONFIG_SYSFB_SIMPLEFB is not set
# CONFIG_GOOGLE_FIRMWARE is not set

#
# Tegra firmware driver
#
# end of Tegra firmware driver
# end of Firmware Drivers

CONFIG_GNSS=y
CONFIG_GNSS_SERIAL=m
# CONFIG_GNSS_MTK_SERIAL is not set
CONFIG_GNSS_SIRF_SERIAL=m
CONFIG_GNSS_UBX_SERIAL=m
# CONFIG_MTD is not set
CONFIG_DTC=y
CONFIG_OF=y
# CONFIG_OF_UNITTEST is not set
CONFIG_OF_FLATTREE=y
CONFIG_OF_KOBJ=y
CONFIG_OF_DYNAMIC=y
CONFIG_OF_ADDRESS=y
CONFIG_OF_IRQ=y
CONFIG_OF_RESOLVE=y
CONFIG_OF_OVERLAY=y
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
CONFIG_PARPORT=y
CONFIG_PARPORT_PC=m
# CONFIG_PARPORT_SERIAL is not set
CONFIG_PARPORT_PC_FIFO=y
# CONFIG_PARPORT_PC_SUPERIO is not set
# CONFIG_PARPORT_1284 is not set
CONFIG_PNP=y
CONFIG_PNP_DEBUG_MESSAGES=y

#
# Protocols
#
CONFIG_PNPACPI=y

#
# NVME Support
#
# end of NVME Support

#
# Misc devices
#
CONFIG_SENSORS_LIS3LV02D=m
# CONFIG_AD525X_DPOT is not set
# CONFIG_DUMMY_IRQ is not set
# CONFIG_IBM_ASM is not set
# CONFIG_PHANTOM is not set
# CONFIG_TIFM_CORE is not set
# CONFIG_ICS932S401 is not set
CONFIG_ENCLOSURE_SERVICES=y
CONFIG_SMPRO_ERRMON=m
CONFIG_SMPRO_MISC=m
# CONFIG_HI6421V600_IRQ is not set
# CONFIG_HP_ILO is not set
CONFIG_APDS9802ALS=m
CONFIG_ISL29003=y
CONFIG_ISL29020=y
CONFIG_SENSORS_TSL2550=m
CONFIG_SENSORS_BH1770=y
CONFIG_SENSORS_APDS990X=m
# CONFIG_HMC6352 is not set
CONFIG_DS1682=m
# CONFIG_PCH_PHUB is not set
CONFIG_SRAM=y
# CONFIG_DW_XDATA_PCIE is not set
# CONFIG_PCI_ENDPOINT_TEST is not set
CONFIG_XILINX_SDFEC=y
# CONFIG_VCPU_STALL_DETECTOR is not set
CONFIG_C2PORT=m
CONFIG_C2PORT_DURAMAR_2150=m

#
# EEPROM support
#
# CONFIG_EEPROM_AT24 is not set
# CONFIG_EEPROM_LEGACY is not set
# CONFIG_EEPROM_MAX6875 is not set
# CONFIG_EEPROM_93CX6 is not set
CONFIG_EEPROM_IDT_89HPESX=y
# CONFIG_EEPROM_EE1004 is not set
# end of EEPROM support

# CONFIG_CB710_CORE is not set

#
# Texas Instruments shared transport line discipline
#
# CONFIG_TI_ST is not set
# end of Texas Instruments shared transport line discipline

CONFIG_SENSORS_LIS3_I2C=m
CONFIG_ALTERA_STAPL=m
# CONFIG_INTEL_MEI is not set
# CONFIG_INTEL_MEI_ME is not set
# CONFIG_INTEL_MEI_TXE is not set
# CONFIG_VMWARE_VMCI is not set
CONFIG_ECHO=y
# CONFIG_MISC_ALCOR_PCI is not set
# CONFIG_MISC_RTSX_PCI is not set
CONFIG_UACCE=m
# CONFIG_PVPANIC is not set
# CONFIG_GP_PCI1XXXX is not set
# end of Misc devices

#
# SCSI device support
#
# end of SCSI device support

# CONFIG_FUSION is not set

#
# IEEE 1394 (FireWire) support
#
CONFIG_FIREWIRE=y
# CONFIG_FIREWIRE_OHCI is not set
# CONFIG_FIREWIRE_NET is not set
# CONFIG_FIREWIRE_NOSY is not set
# end of IEEE 1394 (FireWire) support

CONFIG_MACINTOSH_DRIVERS=y
# CONFIG_MAC_EMUMOUSEBTN is not set
CONFIG_NETDEVICES=y
CONFIG_NET_CORE=y
# CONFIG_BONDING is not set
# CONFIG_DUMMY is not set
# CONFIG_WIREGUARD is not set
# CONFIG_EQUALIZER is not set
# CONFIG_NET_TEAM is not set
# CONFIG_MACVLAN is not set
# CONFIG_IPVLAN is not set
# CONFIG_VXLAN is not set
# CONFIG_GENEVE is not set
# CONFIG_BAREUDP is not set
# CONFIG_GTP is not set
# CONFIG_MACSEC is not set
# CONFIG_NETCONSOLE is not set
# CONFIG_TUN is not set
# CONFIG_TUN_VNET_CROSS_LE is not set
# CONFIG_VETH is not set
CONFIG_VIRTIO_NET=m
# CONFIG_NLMON is not set
# CONFIG_MHI_NET is not set
# CONFIG_ARCNET is not set
CONFIG_ETHERNET=y
CONFIG_NET_VENDOR_3COM=y
# CONFIG_EL3 is not set
# CONFIG_VORTEX is not set
# CONFIG_TYPHOON is not set
CONFIG_NET_VENDOR_ADAPTEC=y
# CONFIG_ADAPTEC_STARFIRE is not set
CONFIG_NET_VENDOR_AGERE=y
# CONFIG_ET131X is not set
CONFIG_NET_VENDOR_ALACRITECH=y
# CONFIG_SLICOSS is not set
CONFIG_NET_VENDOR_ALTEON=y
# CONFIG_ACENIC is not set
# CONFIG_ALTERA_TSE is not set
CONFIG_NET_VENDOR_AMAZON=y
# CONFIG_NET_VENDOR_AMD is not set
CONFIG_NET_VENDOR_AQUANTIA=y
# CONFIG_AQTION is not set
CONFIG_NET_VENDOR_ARC=y
CONFIG_NET_VENDOR_ASIX=y
CONFIG_NET_VENDOR_ATHEROS=y
# CONFIG_ATL2 is not set
# CONFIG_ATL1 is not set
# CONFIG_ATL1E is not set
# CONFIG_ATL1C is not set
# CONFIG_ALX is not set
# CONFIG_CX_ECAT is not set
CONFIG_NET_VENDOR_BROADCOM=y
# CONFIG_B44 is not set
# CONFIG_BCMGENET is not set
# CONFIG_BNX2 is not set
# CONFIG_CNIC is not set
# CONFIG_TIGON3 is not set
# CONFIG_BNX2X is not set
# CONFIG_SYSTEMPORT is not set
# CONFIG_BNXT is not set
CONFIG_NET_VENDOR_CADENCE=y
CONFIG_NET_VENDOR_CAVIUM=y
CONFIG_NET_VENDOR_CHELSIO=y
# CONFIG_CHELSIO_T1 is not set
# CONFIG_CHELSIO_T3 is not set
# CONFIG_CHELSIO_T4 is not set
# CONFIG_CHELSIO_T4VF is not set
CONFIG_NET_VENDOR_CIRRUS=y
CONFIG_NET_VENDOR_CISCO=y
# CONFIG_ENIC is not set
CONFIG_NET_VENDOR_CORTINA=y
# CONFIG_GEMINI_ETHERNET is not set
CONFIG_NET_VENDOR_DAVICOM=y
# CONFIG_DNET is not set
CONFIG_NET_VENDOR_DEC=y
# CONFIG_NET_TULIP is not set
CONFIG_NET_VENDOR_DLINK=y
# CONFIG_DL2K is not set
# CONFIG_SUNDANCE is not set
CONFIG_NET_VENDOR_EMULEX=y
# CONFIG_BE2NET is not set
CONFIG_NET_VENDOR_ENGLEDER=y
# CONFIG_TSNEP is not set
CONFIG_NET_VENDOR_EZCHIP=y
# CONFIG_EZCHIP_NPS_MANAGEMENT_ENET is not set
CONFIG_NET_VENDOR_FUNGIBLE=y
CONFIG_NET_VENDOR_GOOGLE=y
CONFIG_NET_VENDOR_HUAWEI=y
CONFIG_NET_VENDOR_I825XX=y
CONFIG_NET_VENDOR_INTEL=y
# CONFIG_E100 is not set
CONFIG_E1000=y
# CONFIG_E1000E is not set
# CONFIG_IGB is not set
# CONFIG_IGBVF is not set
# CONFIG_IXGB is not set
# CONFIG_IXGBE is not set
# CONFIG_I40E is not set
# CONFIG_IGC is not set
CONFIG_NET_VENDOR_WANGXUN=y
# CONFIG_NGBE is not set
# CONFIG_TXGBE is not set
# CONFIG_JME is not set
CONFIG_NET_VENDOR_LITEX=y
# CONFIG_LITEX_LITEETH is not set
CONFIG_NET_VENDOR_MARVELL=y
# CONFIG_MVMDIO is not set
# CONFIG_SKGE is not set
# CONFIG_SKY2 is not set
CONFIG_NET_VENDOR_MELLANOX=y
# CONFIG_MLX4_EN is not set
# CONFIG_MLX5_CORE is not set
# CONFIG_MLXSW_CORE is not set
# CONFIG_MLXFW is not set
CONFIG_NET_VENDOR_MICREL=y
# CONFIG_KS8851_MLL is not set
# CONFIG_KSZ884X_PCI is not set
CONFIG_NET_VENDOR_MICROCHIP=y
# CONFIG_LAN743X is not set
# CONFIG_VCAP is not set
CONFIG_NET_VENDOR_MICROSEMI=y
CONFIG_NET_VENDOR_MICROSOFT=y
CONFIG_NET_VENDOR_MYRI=y
# CONFIG_MYRI10GE is not set
# CONFIG_FEALNX is not set
CONFIG_NET_VENDOR_NI=y
# CONFIG_NI_XGE_MANAGEMENT_ENET is not set
CONFIG_NET_VENDOR_NATSEMI=y
# CONFIG_NATSEMI is not set
# CONFIG_NS83820 is not set
CONFIG_NET_VENDOR_NETERION=y
# CONFIG_S2IO is not set
CONFIG_NET_VENDOR_NETRONOME=y
CONFIG_NET_VENDOR_8390=y
# CONFIG_NE2K_PCI is not set
CONFIG_NET_VENDOR_NVIDIA=y
# CONFIG_FORCEDETH is not set
CONFIG_NET_VENDOR_OKI=y
# CONFIG_ETHOC is not set
CONFIG_NET_VENDOR_PACKET_ENGINES=y
# CONFIG_HAMACHI is not set
# CONFIG_YELLOWFIN is not set
CONFIG_NET_VENDOR_PENSANDO=y
CONFIG_NET_VENDOR_QLOGIC=y
# CONFIG_QLA3XXX is not set
# CONFIG_QLCNIC is not set
# CONFIG_NETXEN_NIC is not set
# CONFIG_QED is not set
CONFIG_NET_VENDOR_BROCADE=y
# CONFIG_BNA is not set
CONFIG_NET_VENDOR_QUALCOMM=y
# CONFIG_QCA7000_UART is not set
# CONFIG_QCOM_EMAC is not set
# CONFIG_RMNET is not set
CONFIG_NET_VENDOR_RDC=y
# CONFIG_R6040 is not set
CONFIG_NET_VENDOR_REALTEK=y
# CONFIG_ATP is not set
# CONFIG_8139CP is not set
# CONFIG_8139TOO is not set
# CONFIG_R8169 is not set
CONFIG_NET_VENDOR_RENESAS=y
CONFIG_NET_VENDOR_ROCKER=y
CONFIG_NET_VENDOR_SAMSUNG=y
# CONFIG_SXGBE_ETH is not set
CONFIG_NET_VENDOR_SEEQ=y
CONFIG_NET_VENDOR_SILAN=y
# CONFIG_SC92031 is not set
CONFIG_NET_VENDOR_SIS=y
# CONFIG_SIS900 is not set
# CONFIG_SIS190 is not set
CONFIG_NET_VENDOR_SOLARFLARE=y
# CONFIG_SFC is not set
# CONFIG_SFC_FALCON is not set
CONFIG_NET_VENDOR_SMSC=y
# CONFIG_EPIC100 is not set
# CONFIG_SMSC911X is not set
# CONFIG_SMSC9420 is not set
CONFIG_NET_VENDOR_SOCIONEXT=y
CONFIG_NET_VENDOR_STMICRO=y
# CONFIG_STMMAC_ETH is not set
CONFIG_NET_VENDOR_SUN=y
# CONFIG_HAPPYMEAL is not set
# CONFIG_SUNGEM is not set
# CONFIG_CASSINI is not set
# CONFIG_NIU is not set
CONFIG_NET_VENDOR_SYNOPSYS=y
# CONFIG_DWC_XLGMAC is not set
CONFIG_NET_VENDOR_TEHUTI=y
# CONFIG_TEHUTI is not set
CONFIG_NET_VENDOR_TI=y
# CONFIG_TI_CPSW_PHY_SEL is not set
# CONFIG_TLAN is not set
CONFIG_NET_VENDOR_VERTEXCOM=y
CONFIG_NET_VENDOR_VIA=y
# CONFIG_VIA_RHINE is not set
# CONFIG_VIA_VELOCITY is not set
CONFIG_NET_VENDOR_WIZNET=y
# CONFIG_WIZNET_W5100 is not set
# CONFIG_WIZNET_W5300 is not set
CONFIG_NET_VENDOR_XILINX=y
# CONFIG_XILINX_EMACLITE is not set
# CONFIG_XILINX_AXI_EMAC is not set
# CONFIG_XILINX_LL_TEMAC is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
# CONFIG_NET_SB1000 is not set
# CONFIG_PHYLIB is not set
# CONFIG_PSE_CONTROLLER is not set
# CONFIG_MDIO_DEVICE is not set

#
# PCS device drivers
#
# end of PCS device drivers

# CONFIG_PLIP is not set
# CONFIG_PPP is not set
# CONFIG_SLIP is not set

#
# Host-side USB support is needed for USB Network Adapter support
#
CONFIG_WLAN=y
CONFIG_WLAN_VENDOR_ADMTEK=y
CONFIG_WLAN_VENDOR_ATH=y
# CONFIG_ATH_DEBUG is not set
# CONFIG_ATH5K_PCI is not set
CONFIG_WLAN_VENDOR_ATMEL=y
CONFIG_WLAN_VENDOR_BROADCOM=y
CONFIG_WLAN_VENDOR_CISCO=y
CONFIG_WLAN_VENDOR_INTEL=y
CONFIG_WLAN_VENDOR_INTERSIL=y
# CONFIG_HOSTAP is not set
CONFIG_WLAN_VENDOR_MARVELL=y
CONFIG_WLAN_VENDOR_MEDIATEK=y
CONFIG_WLAN_VENDOR_MICROCHIP=y
CONFIG_WLAN_VENDOR_PURELIFI=y
CONFIG_WLAN_VENDOR_RALINK=y
CONFIG_WLAN_VENDOR_REALTEK=y
CONFIG_WLAN_VENDOR_RSI=y
CONFIG_WLAN_VENDOR_SILABS=y
CONFIG_WLAN_VENDOR_ST=y
CONFIG_WLAN_VENDOR_TI=y
CONFIG_WLAN_VENDOR_ZYDAS=y
CONFIG_WLAN_VENDOR_QUANTENNA=y
# CONFIG_WAN is not set

#
# Wireless WAN
#
# CONFIG_WWAN is not set
# end of Wireless WAN

# CONFIG_VMXNET3 is not set
# CONFIG_FUJITSU_ES is not set
# CONFIG_NETDEVSIM is not set
CONFIG_NET_FAILOVER=m
# CONFIG_ISDN is not set

#
# Input device support
#
CONFIG_INPUT=y
CONFIG_INPUT_LEDS=m
CONFIG_INPUT_FF_MEMLESS=y
CONFIG_INPUT_SPARSEKMAP=y
CONFIG_INPUT_MATRIXKMAP=y
CONFIG_INPUT_VIVALDIFMAP=y

#
# Userland interfaces
#
CONFIG_INPUT_MOUSEDEV=y
# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
CONFIG_INPUT_JOYDEV=m
# CONFIG_INPUT_EVDEV is not set
CONFIG_INPUT_EVBUG=y

#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
CONFIG_KEYBOARD_ADC=m
CONFIG_KEYBOARD_ADP5520=m
CONFIG_KEYBOARD_ADP5588=y
# CONFIG_KEYBOARD_ADP5589 is not set
CONFIG_KEYBOARD_ATKBD=y
CONFIG_KEYBOARD_QT1050=m
CONFIG_KEYBOARD_QT1070=y
CONFIG_KEYBOARD_QT2160=y
CONFIG_KEYBOARD_DLINK_DIR685=m
CONFIG_KEYBOARD_LKKBD=y
CONFIG_KEYBOARD_GPIO=y
# CONFIG_KEYBOARD_GPIO_POLLED is not set
# CONFIG_KEYBOARD_TCA6416 is not set
# CONFIG_KEYBOARD_TCA8418 is not set
CONFIG_KEYBOARD_MATRIX=y
# CONFIG_KEYBOARD_LM8323 is not set
CONFIG_KEYBOARD_LM8333=m
CONFIG_KEYBOARD_MAX7359=m
# CONFIG_KEYBOARD_MCS is not set
CONFIG_KEYBOARD_MPR121=m
CONFIG_KEYBOARD_NEWTON=y
CONFIG_KEYBOARD_OPENCORES=y
# CONFIG_KEYBOARD_PINEPHONE is not set
CONFIG_KEYBOARD_GOLDFISH_EVENTS=y
CONFIG_KEYBOARD_STOWAWAY=m
CONFIG_KEYBOARD_SUNKBD=m
# CONFIG_KEYBOARD_STMPE is not set
# CONFIG_KEYBOARD_OMAP4 is not set
CONFIG_KEYBOARD_TC3589X=y
CONFIG_KEYBOARD_TM2_TOUCHKEY=m
CONFIG_KEYBOARD_XTKBD=y
CONFIG_KEYBOARD_CAP11XX=m
CONFIG_KEYBOARD_CYPRESS_SF=y
CONFIG_INPUT_MOUSE=y
CONFIG_MOUSE_PS2=y
# CONFIG_MOUSE_PS2_ALPS is not set
CONFIG_MOUSE_PS2_BYD=y
# CONFIG_MOUSE_PS2_LOGIPS2PP is not set
# CONFIG_MOUSE_PS2_SYNAPTICS is not set
CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS=y
# CONFIG_MOUSE_PS2_CYPRESS is not set
# CONFIG_MOUSE_PS2_TRACKPOINT is not set
# CONFIG_MOUSE_PS2_ELANTECH is not set
CONFIG_MOUSE_PS2_SENTELIC=y
CONFIG_MOUSE_PS2_TOUCHKIT=y
CONFIG_MOUSE_PS2_FOCALTECH=y
# CONFIG_MOUSE_PS2_VMMOUSE is not set
CONFIG_MOUSE_PS2_SMBUS=y
CONFIG_MOUSE_SERIAL=m
# CONFIG_MOUSE_APPLETOUCH is not set
# CONFIG_MOUSE_BCM5974 is not set
# CONFIG_MOUSE_CYAPA is not set
CONFIG_MOUSE_ELAN_I2C=y
# CONFIG_MOUSE_ELAN_I2C_I2C is not set
CONFIG_MOUSE_ELAN_I2C_SMBUS=y
CONFIG_MOUSE_VSXXXAA=m
# CONFIG_MOUSE_GPIO is not set
# CONFIG_MOUSE_SYNAPTICS_I2C is not set
# CONFIG_MOUSE_SYNAPTICS_USB is not set
CONFIG_INPUT_JOYSTICK=y
CONFIG_JOYSTICK_ANALOG=y
CONFIG_JOYSTICK_A3D=m
CONFIG_JOYSTICK_ADC=m
CONFIG_JOYSTICK_ADI=m
CONFIG_JOYSTICK_COBRA=y
CONFIG_JOYSTICK_GF2K=y
# CONFIG_JOYSTICK_GRIP is not set
CONFIG_JOYSTICK_GRIP_MP=m
CONFIG_JOYSTICK_GUILLEMOT=y
# CONFIG_JOYSTICK_INTERACT is not set
CONFIG_JOYSTICK_SIDEWINDER=m
# CONFIG_JOYSTICK_TMDC is not set
CONFIG_JOYSTICK_IFORCE=m
# CONFIG_JOYSTICK_IFORCE_232 is not set
CONFIG_JOYSTICK_WARRIOR=y
# CONFIG_JOYSTICK_MAGELLAN is not set
# CONFIG_JOYSTICK_SPACEORB is not set
CONFIG_JOYSTICK_SPACEBALL=m
CONFIG_JOYSTICK_STINGER=y
CONFIG_JOYSTICK_TWIDJOY=y
# CONFIG_JOYSTICK_ZHENHUA is not set
CONFIG_JOYSTICK_DB9=m
CONFIG_JOYSTICK_GAMECON=m
CONFIG_JOYSTICK_TURBOGRAFX=y
CONFIG_JOYSTICK_AS5011=y
CONFIG_JOYSTICK_JOYDUMP=m
# CONFIG_JOYSTICK_XPAD is not set
# CONFIG_JOYSTICK_PXRC is not set
# CONFIG_JOYSTICK_QWIIC is not set
CONFIG_JOYSTICK_FSIA6B=y
CONFIG_JOYSTICK_SENSEHAT=m
CONFIG_INPUT_TABLET=y
# CONFIG_TABLET_USB_ACECAD is not set
# CONFIG_TABLET_USB_AIPTEK is not set
# CONFIG_TABLET_USB_HANWANG is not set
# CONFIG_TABLET_USB_KBTAB is not set
# CONFIG_TABLET_USB_PEGASUS is not set
CONFIG_TABLET_SERIAL_WACOM4=y
CONFIG_INPUT_TOUCHSCREEN=y
CONFIG_TOUCHSCREEN_88PM860X=y
CONFIG_TOUCHSCREEN_AD7879=y
# CONFIG_TOUCHSCREEN_AD7879_I2C is not set
# CONFIG_TOUCHSCREEN_ADC is not set
CONFIG_TOUCHSCREEN_AR1021_I2C=m
# CONFIG_TOUCHSCREEN_ATMEL_MXT is not set
# CONFIG_TOUCHSCREEN_AUO_PIXCIR is not set
# CONFIG_TOUCHSCREEN_BU21013 is not set
CONFIG_TOUCHSCREEN_BU21029=m
CONFIG_TOUCHSCREEN_CHIPONE_ICN8318=m
# CONFIG_TOUCHSCREEN_CHIPONE_ICN8505 is not set
CONFIG_TOUCHSCREEN_CY8CTMA140=y
# CONFIG_TOUCHSCREEN_CY8CTMG110 is not set
# CONFIG_TOUCHSCREEN_CYTTSP_CORE is not set
CONFIG_TOUCHSCREEN_CYTTSP4_CORE=m
CONFIG_TOUCHSCREEN_CYTTSP4_I2C=m
# CONFIG_TOUCHSCREEN_CYTTSP5 is not set
CONFIG_TOUCHSCREEN_DYNAPRO=m
# CONFIG_TOUCHSCREEN_HAMPSHIRE is not set
# CONFIG_TOUCHSCREEN_EETI is not set
CONFIG_TOUCHSCREEN_EGALAX=y
CONFIG_TOUCHSCREEN_EGALAX_SERIAL=y
# CONFIG_TOUCHSCREEN_EXC3000 is not set
CONFIG_TOUCHSCREEN_FUJITSU=m
CONFIG_TOUCHSCREEN_GOODIX=m
# CONFIG_TOUCHSCREEN_HIDEEP is not set
CONFIG_TOUCHSCREEN_HYCON_HY46XX=m
CONFIG_TOUCHSCREEN_HYNITRON_CSTXXX=y
CONFIG_TOUCHSCREEN_ILI210X=m
# CONFIG_TOUCHSCREEN_ILITEK is not set
# CONFIG_TOUCHSCREEN_S6SY761 is not set
# CONFIG_TOUCHSCREEN_GUNZE is not set
CONFIG_TOUCHSCREEN_EKTF2127=y
# CONFIG_TOUCHSCREEN_ELAN is not set
# CONFIG_TOUCHSCREEN_ELO is not set
CONFIG_TOUCHSCREEN_WACOM_W8001=y
CONFIG_TOUCHSCREEN_WACOM_I2C=y
CONFIG_TOUCHSCREEN_MAX11801=m
CONFIG_TOUCHSCREEN_MCS5000=y
# CONFIG_TOUCHSCREEN_MMS114 is not set
CONFIG_TOUCHSCREEN_MELFAS_MIP4=m
CONFIG_TOUCHSCREEN_MSG2638=y
# CONFIG_TOUCHSCREEN_MTOUCH is not set
CONFIG_TOUCHSCREEN_IMAGIS=m
CONFIG_TOUCHSCREEN_IMX6UL_TSC=m
CONFIG_TOUCHSCREEN_INEXIO=y
# CONFIG_TOUCHSCREEN_MK712 is not set
# CONFIG_TOUCHSCREEN_PENMOUNT is not set
CONFIG_TOUCHSCREEN_EDT_FT5X06=y
# CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set
CONFIG_TOUCHSCREEN_TOUCHWIN=m
# CONFIG_TOUCHSCREEN_TI_AM335X_TSC is not set
CONFIG_TOUCHSCREEN_PIXCIR=y
# CONFIG_TOUCHSCREEN_WDT87XX_I2C is not set
# CONFIG_TOUCHSCREEN_WM831X is not set
# CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set
# CONFIG_TOUCHSCREEN_TOUCHIT213 is not set
# CONFIG_TOUCHSCREEN_TSC_SERIO is not set
CONFIG_TOUCHSCREEN_TSC200X_CORE=m
CONFIG_TOUCHSCREEN_TSC2004=m
# CONFIG_TOUCHSCREEN_TSC2007 is not set
# CONFIG_TOUCHSCREEN_RM_TS is not set
CONFIG_TOUCHSCREEN_SILEAD=m
CONFIG_TOUCHSCREEN_SIS_I2C=m
CONFIG_TOUCHSCREEN_ST1232=m
# CONFIG_TOUCHSCREEN_STMFTS is not set
CONFIG_TOUCHSCREEN_STMPE=m
CONFIG_TOUCHSCREEN_SX8654=m
CONFIG_TOUCHSCREEN_TPS6507X=y
CONFIG_TOUCHSCREEN_ZET6223=m
# CONFIG_TOUCHSCREEN_ZFORCE is not set
CONFIG_TOUCHSCREEN_COLIBRI_VF50=m
CONFIG_TOUCHSCREEN_ROHM_BU21023=y
CONFIG_TOUCHSCREEN_IQS5XX=y
CONFIG_TOUCHSCREEN_ZINITIX=m
CONFIG_TOUCHSCREEN_HIMAX_HX83112B=y
# CONFIG_INPUT_MISC is not set
CONFIG_RMI4_CORE=m
# CONFIG_RMI4_I2C is not set
# CONFIG_RMI4_SMB is not set
CONFIG_RMI4_F03=y
CONFIG_RMI4_F03_SERIO=m
# CONFIG_RMI4_F11 is not set
# CONFIG_RMI4_F12 is not set
# CONFIG_RMI4_F30 is not set
CONFIG_RMI4_F34=y
CONFIG_RMI4_F3A=y
CONFIG_RMI4_F54=y
CONFIG_RMI4_F55=y

#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
CONFIG_SERIO_I8042=y
CONFIG_SERIO_SERPORT=m
# CONFIG_SERIO_CT82C710 is not set
# CONFIG_SERIO_PARKBD is not set
# CONFIG_SERIO_PCIPS2 is not set
CONFIG_SERIO_LIBPS2=y
# CONFIG_SERIO_RAW is not set
CONFIG_SERIO_ALTERA_PS2=m
CONFIG_SERIO_PS2MULT=m
CONFIG_SERIO_ARC_PS2=y
CONFIG_SERIO_APBPS2=m
CONFIG_SERIO_GPIO_PS2=y
CONFIG_USERIO=y
CONFIG_GAMEPORT=y
# CONFIG_GAMEPORT_NS558 is not set
CONFIG_GAMEPORT_L4=m
# CONFIG_GAMEPORT_EMU10K1 is not set
# CONFIG_GAMEPORT_FM801 is not set
# end of Hardware I/O ports
# end of Input device support

#
# Character devices
#
CONFIG_TTY=y
# CONFIG_VT is not set
CONFIG_UNIX98_PTYS=y
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=256
CONFIG_LEGACY_TIOCSTI=y
CONFIG_LDISC_AUTOLOAD=y

#
# Serial drivers
#
CONFIG_SERIAL_EARLYCON=y
CONFIG_SERIAL_8250=y
# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
CONFIG_SERIAL_8250_PNP=y
CONFIG_SERIAL_8250_16550A_VARIANTS=y
CONFIG_SERIAL_8250_FINTEK=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_PCILIB=y
CONFIG_SERIAL_8250_PCI=y
CONFIG_SERIAL_8250_EXAR=y
CONFIG_SERIAL_8250_MEN_MCB=m
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
CONFIG_SERIAL_8250_EXTENDED=y
# CONFIG_SERIAL_8250_MANY_PORTS is not set
# CONFIG_SERIAL_8250_PCI1XXXX is not set
CONFIG_SERIAL_8250_SHARE_IRQ=y
CONFIG_SERIAL_8250_DETECT_IRQ=y
# CONFIG_SERIAL_8250_RSA is not set
CONFIG_SERIAL_8250_DWLIB=y
# CONFIG_SERIAL_8250_DFL is not set
# CONFIG_SERIAL_8250_DW is not set
CONFIG_SERIAL_8250_RT288X=y
CONFIG_SERIAL_8250_LPSS=y
CONFIG_SERIAL_8250_MID=y
CONFIG_SERIAL_8250_PERICOM=y
# CONFIG_SERIAL_OF_PLATFORM is not set

#
# Non-8250 serial port support
#
CONFIG_SERIAL_UARTLITE=y
# CONFIG_SERIAL_UARTLITE_CONSOLE is not set
CONFIG_SERIAL_UARTLITE_NR_UARTS=1
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_JSM is not set
# CONFIG_SERIAL_SIFIVE is not set
# CONFIG_SERIAL_LANTIQ is not set
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_SC16IS7XX is not set
# CONFIG_SERIAL_TIMBERDALE is not set
CONFIG_SERIAL_ALTERA_JTAGUART=m
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_PCH_UART is not set
CONFIG_SERIAL_XILINX_PS_UART=y
# CONFIG_SERIAL_XILINX_PS_UART_CONSOLE is not set
# CONFIG_SERIAL_ARC is not set
# CONFIG_SERIAL_RP2 is not set
CONFIG_SERIAL_FSL_LPUART=y
CONFIG_SERIAL_FSL_LPUART_CONSOLE=y
CONFIG_SERIAL_FSL_LINFLEXUART=m
CONFIG_SERIAL_CONEXANT_DIGICOLOR=y
CONFIG_SERIAL_CONEXANT_DIGICOLOR_CONSOLE=y
# CONFIG_SERIAL_MEN_Z135 is not set
# end of Serial drivers

CONFIG_SERIAL_MCTRL_GPIO=y
# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_GOLDFISH_TTY is not set
# CONFIG_N_GSM is not set
# CONFIG_NOZOMI is not set
# CONFIG_NULL_TTY is not set
CONFIG_RPMSG_TTY=m
CONFIG_SERIAL_DEV_BUS=m
CONFIG_TTY_PRINTK=y
CONFIG_TTY_PRINTK_LEVEL=6
# CONFIG_PRINTER is not set
CONFIG_PPDEV=y
# CONFIG_VIRTIO_CONSOLE is not set
CONFIG_IPMI_HANDLER=y
CONFIG_IPMI_PLAT_DATA=y
CONFIG_IPMI_PANIC_EVENT=y
# CONFIG_IPMI_PANIC_STRING is not set
CONFIG_IPMI_DEVICE_INTERFACE=m
CONFIG_IPMI_SI=m
CONFIG_IPMI_SSIF=y
# CONFIG_IPMI_IPMB is not set
# CONFIG_IPMI_WATCHDOG is not set
CONFIG_IPMI_POWEROFF=m
# CONFIG_SSIF_IPMI_BMC is not set
CONFIG_IPMB_DEVICE_INTERFACE=m
CONFIG_HW_RANDOM=m
CONFIG_HW_RANDOM_TIMERIOMEM=m
CONFIG_HW_RANDOM_INTEL=m
# CONFIG_HW_RANDOM_AMD is not set
CONFIG_HW_RANDOM_BA431=m
CONFIG_HW_RANDOM_GEODE=m
CONFIG_HW_RANDOM_VIA=m
# CONFIG_HW_RANDOM_VIRTIO is not set
# CONFIG_HW_RANDOM_CCTRNG is not set
# CONFIG_HW_RANDOM_XIPHERA is not set
# CONFIG_APPLICOM is not set
# CONFIG_SONYPI is not set
CONFIG_MWAVE=m
CONFIG_PC8736x_GPIO=m
CONFIG_NSC_GPIO=m
CONFIG_DEVMEM=y
CONFIG_NVRAM=m
CONFIG_DEVPORT=y
# CONFIG_HPET is not set
CONFIG_HANGCHECK_TIMER=y
CONFIG_TCG_TPM=m
CONFIG_HW_RANDOM_TPM=y
CONFIG_TCG_TIS_CORE=m
CONFIG_TCG_TIS=m
CONFIG_TCG_TIS_I2C=m
# CONFIG_TCG_TIS_I2C_CR50 is not set
CONFIG_TCG_TIS_I2C_ATMEL=m
# CONFIG_TCG_TIS_I2C_INFINEON is not set
# CONFIG_TCG_TIS_I2C_NUVOTON is not set
CONFIG_TCG_NSC=m
CONFIG_TCG_ATMEL=m
# CONFIG_TCG_INFINEON is not set
# CONFIG_TCG_CRB is not set
CONFIG_TCG_VTPM_PROXY=m
CONFIG_TCG_TIS_ST33ZP24=m
CONFIG_TCG_TIS_ST33ZP24_I2C=m
CONFIG_TELCLOCK=y
# CONFIG_XILLYBUS is not set
# end of Character devices

#
# I2C support
#
CONFIG_I2C=y
CONFIG_ACPI_I2C_OPREGION=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_COMPAT=y
# CONFIG_I2C_CHARDEV is not set
CONFIG_I2C_MUX=m

#
# Multiplexer I2C Chip support
#
CONFIG_I2C_ARB_GPIO_CHALLENGE=m
CONFIG_I2C_MUX_GPIO=m
CONFIG_I2C_MUX_GPMUX=m
CONFIG_I2C_MUX_LTC4306=m
CONFIG_I2C_MUX_PCA9541=m
# CONFIG_I2C_MUX_PCA954x is not set
CONFIG_I2C_MUX_PINCTRL=m
# CONFIG_I2C_MUX_REG is not set
CONFIG_I2C_DEMUX_PINCTRL=m
CONFIG_I2C_MUX_MLXCPLD=m
# end of Multiplexer I2C Chip support

# CONFIG_I2C_HELPER_AUTO is not set
CONFIG_I2C_SMBUS=y

#
# I2C Algorithms
#
CONFIG_I2C_ALGOBIT=y
CONFIG_I2C_ALGOPCF=y
# CONFIG_I2C_ALGOPCA is not set
# end of I2C Algorithms

#
# I2C Hardware Bus support
#

#
# PC SMBus host controller drivers
#
# CONFIG_I2C_ALI1535 is not set
# CONFIG_I2C_ALI1563 is not set
# CONFIG_I2C_ALI15X3 is not set
# CONFIG_I2C_AMD756 is not set
# CONFIG_I2C_AMD8111 is not set
# CONFIG_I2C_AMD_MP2 is not set
# CONFIG_I2C_I801 is not set
# CONFIG_I2C_ISCH is not set
# CONFIG_I2C_ISMT is not set
# CONFIG_I2C_PIIX4 is not set
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_NVIDIA_GPU is not set
# CONFIG_I2C_SIS5595 is not set
# CONFIG_I2C_SIS630 is not set
# CONFIG_I2C_SIS96X is not set
# CONFIG_I2C_VIA is not set
# CONFIG_I2C_VIAPRO is not set

#
# ACPI drivers
#
# CONFIG_I2C_SCMI is not set

#
# I2C system bus drivers (mostly embedded / system-on-chip)
#
CONFIG_I2C_CBUS_GPIO=m
# CONFIG_I2C_DESIGNWARE_PCI is not set
# CONFIG_I2C_EG20T is not set
CONFIG_I2C_GPIO=m
CONFIG_I2C_GPIO_FAULT_INJECTOR=y
# CONFIG_I2C_KEMPLD is not set
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PCA_PLATFORM is not set
# CONFIG_I2C_PXA is not set
CONFIG_I2C_SIMTEC=y
# CONFIG_I2C_XILINX is not set

#
# External I2C/SMBus adapter drivers
#
# CONFIG_I2C_PARPORT is not set
# CONFIG_I2C_PCI1XXXX is not set
CONFIG_I2C_TAOS_EVM=m

#
# Other I2C/SMBus bus drivers
#
# CONFIG_SCx200_ACB is not set
CONFIG_I2C_FSI=m
CONFIG_I2C_VIRTIO=m
# end of I2C Hardware Bus support

# CONFIG_I2C_STUB is not set
CONFIG_I2C_SLAVE=y
# CONFIG_I2C_SLAVE_EEPROM is not set
CONFIG_I2C_SLAVE_TESTUNIT=m
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
# end of I2C support

# CONFIG_I3C is not set
# CONFIG_SPI is not set
CONFIG_SPMI=m
CONFIG_SPMI_HISI3670=m
CONFIG_HSI=y
CONFIG_HSI_BOARDINFO=y

#
# HSI controllers
#

#
# HSI clients
#
CONFIG_HSI_CHAR=m
CONFIG_PPS=y
# CONFIG_PPS_DEBUG is not set

#
# PPS clients support
#
CONFIG_PPS_CLIENT_KTIMER=m
CONFIG_PPS_CLIENT_LDISC=y
CONFIG_PPS_CLIENT_PARPORT=y
CONFIG_PPS_CLIENT_GPIO=y

#
# PPS generators support
#

#
# PTP clock support
#
CONFIG_PTP_1588_CLOCK_OPTIONAL=y

#
# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
#
# end of PTP clock support

CONFIG_PINCTRL=y
CONFIG_GENERIC_PINCTRL_GROUPS=y
CONFIG_PINMUX=y
CONFIG_GENERIC_PINMUX_FUNCTIONS=y
CONFIG_PINCONF=y
CONFIG_GENERIC_PINCONF=y
CONFIG_DEBUG_PINCTRL=y
# CONFIG_PINCTRL_AMD is not set
# CONFIG_PINCTRL_AXP209 is not set
# CONFIG_PINCTRL_CY8C95X0 is not set
# CONFIG_PINCTRL_DA9062 is not set
CONFIG_PINCTRL_EQUILIBRIUM=y
# CONFIG_PINCTRL_MCP23S08 is not set
CONFIG_PINCTRL_MICROCHIP_SGPIO=y
CONFIG_PINCTRL_OCELOT=m
CONFIG_PINCTRL_PALMAS=m
CONFIG_PINCTRL_RK805=m
CONFIG_PINCTRL_SINGLE=y
CONFIG_PINCTRL_STMFX=m
# CONFIG_PINCTRL_SX150X is not set
CONFIG_PINCTRL_LOCHNAGAR=m
CONFIG_PINCTRL_MADERA=m
CONFIG_PINCTRL_CS47L35=y
CONFIG_PINCTRL_CS47L85=y
CONFIG_PINCTRL_CS47L92=y

#
# Intel pinctrl drivers
#
# CONFIG_PINCTRL_BAYTRAIL is not set
# CONFIG_PINCTRL_CHERRYVIEW is not set
# CONFIG_PINCTRL_LYNXPOINT is not set
# CONFIG_PINCTRL_ALDERLAKE is not set
# CONFIG_PINCTRL_BROXTON is not set
# CONFIG_PINCTRL_CANNONLAKE is not set
# CONFIG_PINCTRL_CEDARFORK is not set
# CONFIG_PINCTRL_DENVERTON is not set
# CONFIG_PINCTRL_ELKHARTLAKE is not set
# CONFIG_PINCTRL_EMMITSBURG is not set
# CONFIG_PINCTRL_GEMINILAKE is not set
# CONFIG_PINCTRL_ICELAKE is not set
# CONFIG_PINCTRL_JASPERLAKE is not set
# CONFIG_PINCTRL_LAKEFIELD is not set
# CONFIG_PINCTRL_LEWISBURG is not set
# CONFIG_PINCTRL_METEORLAKE is not set
# CONFIG_PINCTRL_SUNRISEPOINT is not set
# CONFIG_PINCTRL_TIGERLAKE is not set
# end of Intel pinctrl drivers

#
# Renesas pinctrl drivers
#
# end of Renesas pinctrl drivers

CONFIG_GPIOLIB=y
CONFIG_GPIOLIB_FASTPATH_LIMIT=512
CONFIG_OF_GPIO=y
CONFIG_GPIO_ACPI=y
CONFIG_GPIOLIB_IRQCHIP=y
# CONFIG_DEBUG_GPIO is not set
# CONFIG_GPIO_SYSFS is not set
# CONFIG_GPIO_CDEV is not set
CONFIG_GPIO_GENERIC=y
CONFIG_GPIO_REGMAP=y
CONFIG_GPIO_MAX730X=m
CONFIG_GPIO_IDIO_16=y

#
# Memory mapped GPIO drivers
#
# CONFIG_GPIO_74XX_MMIO is not set
CONFIG_GPIO_ALTERA=m
# CONFIG_GPIO_AMDPT is not set
CONFIG_GPIO_CADENCE=m
CONFIG_GPIO_DWAPB=y
# CONFIG_GPIO_EXAR is not set
# CONFIG_GPIO_FTGPIO010 is not set
# CONFIG_GPIO_GENERIC_PLATFORM is not set
# CONFIG_GPIO_GRGPIO is not set
CONFIG_GPIO_HLWD=m
# CONFIG_GPIO_LOGICVC is not set
CONFIG_GPIO_MB86S7X=y
CONFIG_GPIO_MENZ127=m
# CONFIG_GPIO_SIFIVE is not set
# CONFIG_GPIO_SIOX is not set
CONFIG_GPIO_SYSCON=y
# CONFIG_GPIO_VX855 is not set
# CONFIG_GPIO_XILINX is not set
# CONFIG_GPIO_AMD_FCH is not set
# end of Memory mapped GPIO drivers

#
# Port-mapped I/O GPIO drivers
#
CONFIG_GPIO_I8255=y
CONFIG_GPIO_104_DIO_48E=y
CONFIG_GPIO_104_IDIO_16=y
# CONFIG_GPIO_104_IDI_48 is not set
CONFIG_GPIO_F7188X=m
CONFIG_GPIO_GPIO_MM=m
# CONFIG_GPIO_IT87 is not set
CONFIG_GPIO_SCH311X=m
# CONFIG_GPIO_WINBOND is not set
CONFIG_GPIO_WS16C48=m
# end of Port-mapped I/O GPIO drivers

#
# I2C GPIO expanders
#
CONFIG_GPIO_ADNP=m
CONFIG_GPIO_GW_PLD=m
CONFIG_GPIO_MAX7300=m
# CONFIG_GPIO_MAX732X is not set
CONFIG_GPIO_PCA953X=y
CONFIG_GPIO_PCA953X_IRQ=y
CONFIG_GPIO_PCA9570=m
CONFIG_GPIO_PCF857X=y
CONFIG_GPIO_TPIC2810=y
# end of I2C GPIO expanders

#
# MFD GPIO expanders
#
CONFIG_GPIO_ADP5520=y
CONFIG_GPIO_BD71815=m
CONFIG_GPIO_BD71828=m
CONFIG_GPIO_DA9055=y
CONFIG_GPIO_KEMPLD=m
# CONFIG_GPIO_LP3943 is not set
CONFIG_GPIO_LP87565=m
# CONFIG_GPIO_MADERA is not set
CONFIG_GPIO_MAX77650=m
# CONFIG_GPIO_PALMAS is not set
# CONFIG_GPIO_STMPE is not set
CONFIG_GPIO_TC3589X=y
# CONFIG_GPIO_TPS65086 is not set
CONFIG_GPIO_TPS6586X=y
CONFIG_GPIO_TPS65910=y
CONFIG_GPIO_TQMX86=m
CONFIG_GPIO_TWL6040=m
CONFIG_GPIO_WM831X=m
CONFIG_GPIO_WM8350=y
# end of MFD GPIO expanders

#
# PCI GPIO expanders
#
# CONFIG_GPIO_AMD8111 is not set
# CONFIG_GPIO_BT8XX is not set
# CONFIG_GPIO_ML_IOH is not set
# CONFIG_GPIO_PCH is not set
# CONFIG_GPIO_PCI_IDIO_16 is not set
# CONFIG_GPIO_PCIE_IDIO_24 is not set
# CONFIG_GPIO_RDC321X is not set
# CONFIG_GPIO_SODAVILLE is not set
# end of PCI GPIO expanders

#
# Virtual GPIO drivers
#
CONFIG_GPIO_AGGREGATOR=m
# CONFIG_GPIO_LATCH is not set
CONFIG_GPIO_MOCKUP=m
CONFIG_GPIO_VIRTIO=y
CONFIG_GPIO_SIM=m
# end of Virtual GPIO drivers

CONFIG_W1=m

#
# 1-wire Bus Masters
#
# CONFIG_W1_MASTER_MATROX is not set
CONFIG_W1_MASTER_DS2482=m
CONFIG_W1_MASTER_GPIO=m
# CONFIG_W1_MASTER_SGI is not set
# end of 1-wire Bus Masters

#
# 1-wire Slaves
#
# CONFIG_W1_SLAVE_THERM is not set
CONFIG_W1_SLAVE_SMEM=m
CONFIG_W1_SLAVE_DS2405=m
# CONFIG_W1_SLAVE_DS2408 is not set
# CONFIG_W1_SLAVE_DS2413 is not set
# CONFIG_W1_SLAVE_DS2406 is not set
CONFIG_W1_SLAVE_DS2423=m
# CONFIG_W1_SLAVE_DS2805 is not set
# CONFIG_W1_SLAVE_DS2430 is not set
# CONFIG_W1_SLAVE_DS2431 is not set
# CONFIG_W1_SLAVE_DS2433 is not set
CONFIG_W1_SLAVE_DS2438=m
CONFIG_W1_SLAVE_DS250X=m
CONFIG_W1_SLAVE_DS2780=m
CONFIG_W1_SLAVE_DS2781=m
CONFIG_W1_SLAVE_DS28E04=m
CONFIG_W1_SLAVE_DS28E17=m
# end of 1-wire Slaves

# CONFIG_POWER_RESET is not set
CONFIG_POWER_SUPPLY=y
# CONFIG_POWER_SUPPLY_DEBUG is not set
# CONFIG_GENERIC_ADC_BATTERY is not set
CONFIG_IP5XXX_POWER=y
# CONFIG_MAX8925_POWER is not set
CONFIG_WM831X_BACKUP=m
CONFIG_WM831X_POWER=m
# CONFIG_WM8350_POWER is not set
# CONFIG_TEST_POWER is not set
# CONFIG_BATTERY_88PM860X is not set
CONFIG_CHARGER_ADP5061=y
CONFIG_BATTERY_ACT8945A=y
CONFIG_BATTERY_CW2015=m
CONFIG_BATTERY_DS2760=m
CONFIG_BATTERY_DS2780=m
CONFIG_BATTERY_DS2781=m
# CONFIG_BATTERY_DS2782 is not set
# CONFIG_BATTERY_SAMSUNG_SDI is not set
CONFIG_BATTERY_SBS=y
CONFIG_CHARGER_SBS=m
CONFIG_MANAGER_SBS=m
CONFIG_BATTERY_BQ27XXX=y
CONFIG_BATTERY_BQ27XXX_I2C=m
# CONFIG_BATTERY_BQ27XXX_HDQ is not set
# CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM is not set
CONFIG_CHARGER_AXP20X=m
CONFIG_BATTERY_AXP20X=m
CONFIG_AXP20X_POWER=m
CONFIG_BATTERY_MAX17040=m
CONFIG_BATTERY_MAX17042=m
CONFIG_BATTERY_MAX1721X=m
# CONFIG_CHARGER_MAX8903 is not set
CONFIG_CHARGER_LP8727=m
# CONFIG_CHARGER_LP8788 is not set
CONFIG_CHARGER_GPIO=m
# CONFIG_CHARGER_MANAGER is not set
# CONFIG_CHARGER_LT3651 is not set
CONFIG_CHARGER_LTC4162L=m
CONFIG_CHARGER_DETECTOR_MAX14656=m
# CONFIG_CHARGER_MAX77650 is not set
CONFIG_CHARGER_MAX77976=y
CONFIG_CHARGER_MP2629=m
# CONFIG_CHARGER_MT6360 is not set
CONFIG_CHARGER_MT6370=m
# CONFIG_CHARGER_BQ2415X is not set
CONFIG_CHARGER_BQ24190=m
CONFIG_CHARGER_BQ24257=y
CONFIG_CHARGER_BQ24735=m
# CONFIG_CHARGER_BQ2515X is not set
# CONFIG_CHARGER_BQ25890 is not set
CONFIG_CHARGER_BQ25980=y
CONFIG_CHARGER_BQ256XX=y
# CONFIG_CHARGER_RK817 is not set
CONFIG_CHARGER_SMB347=m
CONFIG_CHARGER_TPS65090=y
CONFIG_BATTERY_GAUGE_LTC2941=y
CONFIG_BATTERY_GOLDFISH=m
CONFIG_BATTERY_RT5033=y
CONFIG_CHARGER_RT9455=y
CONFIG_CHARGER_RT9467=m
# CONFIG_CHARGER_RT9471 is not set
# CONFIG_CHARGER_UCS1002 is not set
CONFIG_CHARGER_BD99954=y
# CONFIG_BATTERY_UG3105 is not set
CONFIG_HWMON=m
CONFIG_HWMON_VID=m
# CONFIG_HWMON_DEBUG_CHIP is not set

#
# Native drivers
#
CONFIG_SENSORS_SMPRO=m
CONFIG_SENSORS_AD7414=m
CONFIG_SENSORS_AD7418=m
CONFIG_SENSORS_ADM1025=m
CONFIG_SENSORS_ADM1026=m
CONFIG_SENSORS_ADM1029=m
CONFIG_SENSORS_ADM1031=m
CONFIG_SENSORS_ADM1177=m
CONFIG_SENSORS_ADM9240=m
# CONFIG_SENSORS_ADT7410 is not set
# CONFIG_SENSORS_ADT7411 is not set
# CONFIG_SENSORS_ADT7462 is not set
CONFIG_SENSORS_ADT7470=m
CONFIG_SENSORS_ADT7475=m
CONFIG_SENSORS_AHT10=m
CONFIG_SENSORS_AS370=m
CONFIG_SENSORS_ASC7621=m
CONFIG_SENSORS_AXI_FAN_CONTROL=m
# CONFIG_SENSORS_K8TEMP is not set
CONFIG_SENSORS_APPLESMC=m
CONFIG_SENSORS_ASB100=m
CONFIG_SENSORS_ATXP1=m
CONFIG_SENSORS_DS620=m
# CONFIG_SENSORS_DS1621 is not set
# CONFIG_SENSORS_DELL_SMM is not set
# CONFIG_SENSORS_DA9055 is not set
# CONFIG_SENSORS_I5K_AMB is not set
CONFIG_SENSORS_F71805F=m
# CONFIG_SENSORS_F71882FG is not set
CONFIG_SENSORS_F75375S=m
CONFIG_SENSORS_GSC=m
# CONFIG_SENSORS_FSCHMD is not set
CONFIG_SENSORS_GL518SM=m
CONFIG_SENSORS_GL520SM=m
# CONFIG_SENSORS_G760A is not set
CONFIG_SENSORS_G762=m
# CONFIG_SENSORS_GPIO_FAN is not set
CONFIG_SENSORS_HIH6130=m
CONFIG_SENSORS_IBMAEM=m
CONFIG_SENSORS_IBMPEX=m
# CONFIG_SENSORS_IIO_HWMON is not set
# CONFIG_SENSORS_I5500 is not set
CONFIG_SENSORS_CORETEMP=m
# CONFIG_SENSORS_IT87 is not set
CONFIG_SENSORS_JC42=m
CONFIG_SENSORS_POWR1220=m
CONFIG_SENSORS_LINEAGE=m
# CONFIG_SENSORS_LOCHNAGAR is not set
# CONFIG_SENSORS_LTC2945 is not set
CONFIG_SENSORS_LTC2947=m
CONFIG_SENSORS_LTC2947_I2C=m
CONFIG_SENSORS_LTC2990=m
CONFIG_SENSORS_LTC2992=m
# CONFIG_SENSORS_LTC4151 is not set
# CONFIG_SENSORS_LTC4215 is not set
CONFIG_SENSORS_LTC4222=m
# CONFIG_SENSORS_LTC4245 is not set
CONFIG_SENSORS_LTC4260=m
CONFIG_SENSORS_LTC4261=m
CONFIG_SENSORS_MAX127=m
CONFIG_SENSORS_MAX16065=m
CONFIG_SENSORS_MAX1619=m
CONFIG_SENSORS_MAX1668=m
CONFIG_SENSORS_MAX197=m
CONFIG_SENSORS_MAX31730=m
# CONFIG_SENSORS_MAX31760 is not set
CONFIG_SENSORS_MAX6620=m
# CONFIG_SENSORS_MAX6621 is not set
CONFIG_SENSORS_MAX6639=m
CONFIG_SENSORS_MAX6650=m
CONFIG_SENSORS_MAX6697=m
CONFIG_SENSORS_MAX31790=m
# CONFIG_SENSORS_MC34VR500 is not set
# CONFIG_SENSORS_MCP3021 is not set
CONFIG_SENSORS_TC654=m
CONFIG_SENSORS_TPS23861=m
CONFIG_SENSORS_MR75203=m
CONFIG_SENSORS_LM63=m
CONFIG_SENSORS_LM73=m
# CONFIG_SENSORS_LM75 is not set
# CONFIG_SENSORS_LM77 is not set
CONFIG_SENSORS_LM78=m
CONFIG_SENSORS_LM80=m
CONFIG_SENSORS_LM83=m
CONFIG_SENSORS_LM85=m
CONFIG_SENSORS_LM87=m
CONFIG_SENSORS_LM90=m
# CONFIG_SENSORS_LM92 is not set
CONFIG_SENSORS_LM93=m
# CONFIG_SENSORS_LM95234 is not set
CONFIG_SENSORS_LM95241=m
CONFIG_SENSORS_LM95245=m
CONFIG_SENSORS_PC87360=m
CONFIG_SENSORS_PC87427=m
# CONFIG_SENSORS_NTC_THERMISTOR is not set
# CONFIG_SENSORS_NCT6683 is not set
CONFIG_SENSORS_NCT6775_CORE=m
# CONFIG_SENSORS_NCT6775 is not set
CONFIG_SENSORS_NCT6775_I2C=m
CONFIG_SENSORS_NCT7802=m
CONFIG_SENSORS_NPCM7XX=m
# CONFIG_SENSORS_OCC_P8_I2C is not set
# CONFIG_SENSORS_OXP is not set
# CONFIG_SENSORS_PCF8591 is not set
# CONFIG_PMBUS is not set
CONFIG_SENSORS_PWM_FAN=m
CONFIG_SENSORS_SBTSI=m
CONFIG_SENSORS_SBRMI=m
CONFIG_SENSORS_SHT15=m
CONFIG_SENSORS_SHT21=m
# CONFIG_SENSORS_SHT3x is not set
CONFIG_SENSORS_SHT4x=m
CONFIG_SENSORS_SHTC1=m
# CONFIG_SENSORS_SIS5595 is not set
CONFIG_SENSORS_SY7636A=m
CONFIG_SENSORS_DME1737=m
CONFIG_SENSORS_EMC1403=m
CONFIG_SENSORS_EMC2103=m
CONFIG_SENSORS_EMC2305=m
# CONFIG_SENSORS_EMC6W201 is not set
# CONFIG_SENSORS_SMSC47M1 is not set
CONFIG_SENSORS_SMSC47M192=m
CONFIG_SENSORS_SMSC47B397=m
CONFIG_SENSORS_STTS751=m
# CONFIG_SENSORS_SMM665 is not set
CONFIG_SENSORS_ADC128D818=m
CONFIG_SENSORS_ADS7828=m
CONFIG_SENSORS_AMC6821=m
CONFIG_SENSORS_INA209=m
CONFIG_SENSORS_INA2XX=m
CONFIG_SENSORS_INA238=m
CONFIG_SENSORS_INA3221=m
CONFIG_SENSORS_TC74=m
CONFIG_SENSORS_THMC50=m
CONFIG_SENSORS_TMP102=m
CONFIG_SENSORS_TMP103=m
CONFIG_SENSORS_TMP108=m
CONFIG_SENSORS_TMP401=m
# CONFIG_SENSORS_TMP421 is not set
CONFIG_SENSORS_TMP464=m
CONFIG_SENSORS_TMP513=m
CONFIG_SENSORS_VIA_CPUTEMP=m
# CONFIG_SENSORS_VIA686A is not set
# CONFIG_SENSORS_VT1211 is not set
# CONFIG_SENSORS_VT8231 is not set
CONFIG_SENSORS_W83773G=m
CONFIG_SENSORS_W83781D=m
CONFIG_SENSORS_W83791D=m
CONFIG_SENSORS_W83792D=m
CONFIG_SENSORS_W83793=m
# CONFIG_SENSORS_W83795 is not set
CONFIG_SENSORS_W83L785TS=m
CONFIG_SENSORS_W83L786NG=m
CONFIG_SENSORS_W83627HF=m
# CONFIG_SENSORS_W83627EHF is not set
CONFIG_SENSORS_WM831X=m
CONFIG_SENSORS_WM8350=m
CONFIG_SENSORS_INTEL_M10_BMC_HWMON=m

#
# ACPI drivers
#
# CONFIG_SENSORS_ACPI_POWER is not set
# CONFIG_SENSORS_ATK0110 is not set
# CONFIG_SENSORS_ASUS_EC is not set
CONFIG_THERMAL=y
# CONFIG_THERMAL_NETLINK is not set
CONFIG_THERMAL_STATISTICS=y
CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=0
# CONFIG_THERMAL_OF is not set
CONFIG_THERMAL_WRITABLE_TRIPS=y
CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
# CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE is not set
# CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE is not set
# CONFIG_THERMAL_GOV_FAIR_SHARE is not set
CONFIG_THERMAL_GOV_STEP_WISE=y
CONFIG_THERMAL_GOV_BANG_BANG=y
CONFIG_THERMAL_GOV_USER_SPACE=y
CONFIG_DEVFREQ_THERMAL=y
CONFIG_THERMAL_EMULATION=y
CONFIG_THERMAL_MMIO=m
CONFIG_DA9062_THERMAL=m

#
# Intel thermal drivers
#
# CONFIG_INTEL_POWERCLAMP is not set
# CONFIG_INTEL_SOC_DTS_THERMAL is not set

#
# ACPI INT340X thermal drivers
#
# end of ACPI INT340X thermal drivers

# CONFIG_INTEL_PCH_THERMAL is not set
# CONFIG_INTEL_TCC_COOLING is not set
# CONFIG_INTEL_MENLOW is not set
# end of Intel thermal drivers

CONFIG_GENERIC_ADC_THERMAL=m
# CONFIG_WATCHDOG is not set
CONFIG_SSB_POSSIBLE=y
CONFIG_SSB=y
CONFIG_SSB_SPROM=y
CONFIG_SSB_PCIHOST_POSSIBLE=y
CONFIG_SSB_PCIHOST=y
CONFIG_SSB_DRIVER_PCICORE_POSSIBLE=y
# CONFIG_SSB_DRIVER_PCICORE is not set
# CONFIG_SSB_DRIVER_GPIO is not set
CONFIG_BCMA_POSSIBLE=y
CONFIG_BCMA=y
CONFIG_BCMA_HOST_PCI_POSSIBLE=y
CONFIG_BCMA_HOST_PCI=y
CONFIG_BCMA_HOST_SOC=y
CONFIG_BCMA_DRIVER_PCI=y
# CONFIG_BCMA_SFLASH is not set
# CONFIG_BCMA_DRIVER_GMAC_CMN is not set
CONFIG_BCMA_DRIVER_GPIO=y
# CONFIG_BCMA_DEBUG is not set

#
# Multifunction device drivers
#
CONFIG_MFD_CORE=y
# CONFIG_MFD_CS5535 is not set
CONFIG_MFD_ACT8945A=y
CONFIG_MFD_AS3711=y
CONFIG_MFD_SMPRO=m
# CONFIG_MFD_AS3722 is not set
CONFIG_PMIC_ADP5520=y
# CONFIG_MFD_AAT2870_CORE is not set
CONFIG_MFD_ATMEL_FLEXCOM=m
# CONFIG_MFD_ATMEL_HLCDC is not set
# CONFIG_MFD_BCM590XX is not set
# CONFIG_MFD_BD9571MWV is not set
CONFIG_MFD_AXP20X=y
CONFIG_MFD_AXP20X_I2C=y
CONFIG_MFD_MADERA=m
CONFIG_MFD_MADERA_I2C=m
# CONFIG_MFD_CS47L15 is not set
CONFIG_MFD_CS47L35=y
CONFIG_MFD_CS47L85=y
# CONFIG_MFD_CS47L90 is not set
CONFIG_MFD_CS47L92=y
# CONFIG_PMIC_DA903X is not set
# CONFIG_MFD_DA9052_I2C is not set
CONFIG_MFD_DA9055=y
CONFIG_MFD_DA9062=y
CONFIG_MFD_DA9063=y
# CONFIG_MFD_DA9150 is not set
CONFIG_MFD_GATEWORKS_GSC=y
# CONFIG_MFD_MC13XXX_I2C is not set
CONFIG_MFD_MP2629=m
CONFIG_MFD_HI6421_PMIC=m
# CONFIG_MFD_HI6421_SPMI is not set
# CONFIG_LPC_ICH is not set
# CONFIG_LPC_SCH is not set
# CONFIG_MFD_INTEL_LPSS_ACPI is not set
# CONFIG_MFD_INTEL_LPSS_PCI is not set
# CONFIG_MFD_IQS62X is not set
# CONFIG_MFD_JANZ_CMODIO is not set
CONFIG_MFD_KEMPLD=m
CONFIG_MFD_88PM800=y
CONFIG_MFD_88PM805=y
CONFIG_MFD_88PM860X=y
# CONFIG_MFD_MAX14577 is not set
# CONFIG_MFD_MAX77620 is not set
CONFIG_MFD_MAX77650=y
CONFIG_MFD_MAX77686=y
# CONFIG_MFD_MAX77693 is not set
# CONFIG_MFD_MAX77714 is not set
CONFIG_MFD_MAX77843=y
# CONFIG_MFD_MAX8907 is not set
CONFIG_MFD_MAX8925=y
# CONFIG_MFD_MAX8997 is not set
# CONFIG_MFD_MAX8998 is not set
CONFIG_MFD_MT6360=y
CONFIG_MFD_MT6370=m
# CONFIG_MFD_MT6397 is not set
# CONFIG_MFD_MENF21BMC is not set
CONFIG_MFD_NTXEC=m
CONFIG_MFD_RETU=y
# CONFIG_MFD_PCF50633 is not set
CONFIG_MFD_SY7636A=y
# CONFIG_MFD_RDC321X is not set
CONFIG_MFD_RT4831=m
# CONFIG_MFD_RT5033 is not set
# CONFIG_MFD_RT5120 is not set
# CONFIG_MFD_RC5T583 is not set
CONFIG_MFD_RK808=y
# CONFIG_MFD_RN5T618 is not set
CONFIG_MFD_SEC_CORE=y
# CONFIG_MFD_SI476X_CORE is not set
CONFIG_MFD_SIMPLE_MFD_I2C=y
# CONFIG_MFD_SM501 is not set
CONFIG_MFD_SKY81452=m
CONFIG_MFD_STMPE=y

#
# STMicroelectronics STMPE Interface Drivers
#
# CONFIG_STMPE_I2C is not set
# end of STMicroelectronics STMPE Interface Drivers

CONFIG_MFD_SYSCON=y
CONFIG_MFD_TI_AM335X_TSCADC=m
CONFIG_MFD_LP3943=m
CONFIG_MFD_LP8788=y
# CONFIG_MFD_TI_LMU is not set
CONFIG_MFD_PALMAS=m
CONFIG_TPS6105X=m
# CONFIG_TPS65010 is not set
CONFIG_TPS6507X=y
CONFIG_MFD_TPS65086=m
CONFIG_MFD_TPS65090=y
# CONFIG_MFD_TPS65217 is not set
# CONFIG_MFD_TI_LP873X is not set
CONFIG_MFD_TI_LP87565=m
# CONFIG_MFD_TPS65218 is not set
# CONFIG_MFD_TPS65219 is not set
CONFIG_MFD_TPS6586X=y
CONFIG_MFD_TPS65910=y
# CONFIG_MFD_TPS65912_I2C is not set
# CONFIG_TWL4030_CORE is not set
CONFIG_TWL6040_CORE=y
CONFIG_MFD_WL1273_CORE=m
# CONFIG_MFD_LM3533 is not set
# CONFIG_MFD_TIMBERDALE is not set
CONFIG_MFD_TC3589X=y
CONFIG_MFD_TQMX86=m
# CONFIG_MFD_VX855 is not set
CONFIG_MFD_LOCHNAGAR=y
# CONFIG_MFD_ARIZONA_I2C is not set
# CONFIG_MFD_WM8400 is not set
CONFIG_MFD_WM831X=y
CONFIG_MFD_WM831X_I2C=y
CONFIG_MFD_WM8350=y
CONFIG_MFD_WM8350_I2C=y
# CONFIG_MFD_WM8994 is not set
CONFIG_MFD_ROHM_BD718XX=y
CONFIG_MFD_ROHM_BD71828=y
CONFIG_MFD_ROHM_BD957XMUF=m
CONFIG_MFD_STPMIC1=y
CONFIG_MFD_STMFX=m
CONFIG_MFD_ATC260X=y
CONFIG_MFD_ATC260X_I2C=y
CONFIG_MFD_QCOM_PM8008=m
# CONFIG_RAVE_SP_CORE is not set
CONFIG_MFD_INTEL_M10_BMC_CORE=m
CONFIG_MFD_INTEL_M10_BMC_PMCI=m
CONFIG_MFD_RSMU_I2C=m
# end of Multifunction device drivers

CONFIG_REGULATOR=y
CONFIG_REGULATOR_DEBUG=y
CONFIG_REGULATOR_FIXED_VOLTAGE=m
CONFIG_REGULATOR_VIRTUAL_CONSUMER=m
# CONFIG_REGULATOR_USERSPACE_CONSUMER is not set
CONFIG_REGULATOR_88PG86X=m
CONFIG_REGULATOR_88PM800=y
CONFIG_REGULATOR_88PM8607=m
# CONFIG_REGULATOR_ACT8865 is not set
CONFIG_REGULATOR_ACT8945A=m
CONFIG_REGULATOR_AD5398=m
# CONFIG_REGULATOR_AS3711 is not set
CONFIG_REGULATOR_ATC260X=y
# CONFIG_REGULATOR_AXP20X is not set
CONFIG_REGULATOR_BD71815=m
CONFIG_REGULATOR_BD71828=y
# CONFIG_REGULATOR_BD718XX is not set
CONFIG_REGULATOR_BD957XMUF=m
CONFIG_REGULATOR_DA9055=m
CONFIG_REGULATOR_DA9062=y
CONFIG_REGULATOR_DA9063=m
CONFIG_REGULATOR_DA9121=m
CONFIG_REGULATOR_DA9210=y
CONFIG_REGULATOR_DA9211=y
CONFIG_REGULATOR_FAN53555=y
CONFIG_REGULATOR_FAN53880=m
CONFIG_REGULATOR_GPIO=m
CONFIG_REGULATOR_HI6421=m
# CONFIG_REGULATOR_HI6421V530 is not set
# CONFIG_REGULATOR_ISL9305 is not set
CONFIG_REGULATOR_ISL6271A=m
# CONFIG_REGULATOR_LOCHNAGAR is not set
# CONFIG_REGULATOR_LP3971 is not set
CONFIG_REGULATOR_LP3972=y
CONFIG_REGULATOR_LP872X=m
CONFIG_REGULATOR_LP8755=m
CONFIG_REGULATOR_LP87565=m
CONFIG_REGULATOR_LP8788=y
# CONFIG_REGULATOR_LTC3589 is not set
CONFIG_REGULATOR_LTC3676=y
CONFIG_REGULATOR_MAX1586=y
CONFIG_REGULATOR_MAX77650=m
CONFIG_REGULATOR_MAX8649=m
CONFIG_REGULATOR_MAX8660=m
CONFIG_REGULATOR_MAX8893=m
CONFIG_REGULATOR_MAX8925=y
# CONFIG_REGULATOR_MAX8952 is not set
CONFIG_REGULATOR_MAX20086=y
CONFIG_REGULATOR_MAX20411=y
CONFIG_REGULATOR_MAX77686=m
CONFIG_REGULATOR_MAX77693=m
# CONFIG_REGULATOR_MAX77802 is not set
# CONFIG_REGULATOR_MAX77826 is not set
CONFIG_REGULATOR_MCP16502=m
# CONFIG_REGULATOR_MP5416 is not set
CONFIG_REGULATOR_MP8859=m
# CONFIG_REGULATOR_MP886X is not set
# CONFIG_REGULATOR_MPQ7920 is not set
# CONFIG_REGULATOR_MT6311 is not set
CONFIG_REGULATOR_MT6315=m
CONFIG_REGULATOR_MT6360=y
CONFIG_REGULATOR_MT6370=m
# CONFIG_REGULATOR_PALMAS is not set
# CONFIG_REGULATOR_PCA9450 is not set
CONFIG_REGULATOR_PF8X00=y
CONFIG_REGULATOR_PFUZE100=y
# CONFIG_REGULATOR_PV88060 is not set
CONFIG_REGULATOR_PV88080=m
# CONFIG_REGULATOR_PV88090 is not set
CONFIG_REGULATOR_PWM=m
CONFIG_REGULATOR_QCOM_SPMI=m
CONFIG_REGULATOR_QCOM_USB_VBUS=m
CONFIG_REGULATOR_RASPBERRYPI_TOUCHSCREEN_ATTINY=m
# CONFIG_REGULATOR_RK808 is not set
CONFIG_REGULATOR_ROHM=y
# CONFIG_REGULATOR_RT4801 is not set
CONFIG_REGULATOR_RT4831=m
# CONFIG_REGULATOR_RT5190A is not set
CONFIG_REGULATOR_RT5759=m
CONFIG_REGULATOR_RT6160=y
CONFIG_REGULATOR_RT6190=y
# CONFIG_REGULATOR_RT6245 is not set
CONFIG_REGULATOR_RTQ2134=m
CONFIG_REGULATOR_RTMV20=y
CONFIG_REGULATOR_RTQ6752=y
CONFIG_REGULATOR_S2MPA01=m
CONFIG_REGULATOR_S2MPS11=y
# CONFIG_REGULATOR_S5M8767 is not set
CONFIG_REGULATOR_SKY81452=m
# CONFIG_REGULATOR_SLG51000 is not set
# CONFIG_REGULATOR_STPMIC1 is not set
# CONFIG_REGULATOR_SY7636A is not set
CONFIG_REGULATOR_SY8106A=m
CONFIG_REGULATOR_SY8824X=m
# CONFIG_REGULATOR_SY8827N is not set
CONFIG_REGULATOR_TPS51632=y
CONFIG_REGULATOR_TPS6105X=m
CONFIG_REGULATOR_TPS62360=m
CONFIG_REGULATOR_TPS6286X=m
# CONFIG_REGULATOR_TPS65023 is not set
CONFIG_REGULATOR_TPS6507X=y
CONFIG_REGULATOR_TPS65086=m
CONFIG_REGULATOR_TPS65090=m
CONFIG_REGULATOR_TPS65132=m
# CONFIG_REGULATOR_TPS6586X is not set
CONFIG_REGULATOR_TPS65910=y
# CONFIG_REGULATOR_VCTRL is not set
# CONFIG_REGULATOR_WM831X is not set
CONFIG_REGULATOR_WM8350=m
CONFIG_REGULATOR_QCOM_LABIBB=m
# CONFIG_RC_CORE is not set
CONFIG_CEC_CORE=y
CONFIG_CEC_NOTIFIER=y

#
# CEC support
#
CONFIG_MEDIA_CEC_SUPPORT=y
CONFIG_CEC_CH7322=y
# CONFIG_USB_PULSE8_CEC is not set
# CONFIG_USB_RAINSHADOW_CEC is not set
# end of CEC support

CONFIG_MEDIA_SUPPORT=y
CONFIG_MEDIA_SUPPORT_FILTER=y
# CONFIG_MEDIA_SUBDRV_AUTOSELECT is not set

#
# Media device types
#
CONFIG_MEDIA_CAMERA_SUPPORT=y
CONFIG_MEDIA_ANALOG_TV_SUPPORT=y
CONFIG_MEDIA_DIGITAL_TV_SUPPORT=y
# CONFIG_MEDIA_RADIO_SUPPORT is not set
# CONFIG_MEDIA_SDR_SUPPORT is not set
# CONFIG_MEDIA_PLATFORM_SUPPORT is not set
# CONFIG_MEDIA_TEST_SUPPORT is not set
# end of Media device types

CONFIG_VIDEO_DEV=y
CONFIG_MEDIA_CONTROLLER=y
CONFIG_DVB_CORE=y

#
# Video4Linux options
#
CONFIG_VIDEO_V4L2_I2C=y
CONFIG_VIDEO_V4L2_SUBDEV_API=y
CONFIG_VIDEO_ADV_DEBUG=y
# CONFIG_VIDEO_FIXED_MINOR_RANGES is not set
CONFIG_V4L2_FLASH_LED_CLASS=m
CONFIG_V4L2_FWNODE=y
CONFIG_V4L2_ASYNC=y
# end of Video4Linux options

#
# Media controller options
#
# CONFIG_MEDIA_CONTROLLER_DVB is not set
# end of Media controller options

#
# Digital TV options
#
CONFIG_DVB_MMAP=y
CONFIG_DVB_NET=y
CONFIG_DVB_MAX_ADAPTERS=16
CONFIG_DVB_DYNAMIC_MINORS=y
CONFIG_DVB_DEMUX_SECTION_LOSS_LOG=y
# CONFIG_DVB_ULE_DEBUG is not set
# end of Digital TV options

#
# Media drivers
#

#
# Drivers filtered as selected at 'Filter media drivers'
#

#
# Media drivers
#
# CONFIG_MEDIA_PCI_SUPPORT is not set

#
# FireWire (IEEE 1394) Adapters
#
CONFIG_DVB_FIREDTV=m
CONFIG_DVB_FIREDTV_INPUT=y
CONFIG_VIDEOBUF2_CORE=y
CONFIG_VIDEOBUF2_V4L2=y
CONFIG_VIDEOBUF2_MEMOPS=y
CONFIG_VIDEOBUF2_VMALLOC=y
# end of Media drivers

#
# Media ancillary drivers
#
CONFIG_MEDIA_ATTACH=y

#
# Camera sensor devices
#
CONFIG_VIDEO_APTINA_PLL=m
CONFIG_VIDEO_AR0521=m
CONFIG_VIDEO_HI556=m
# CONFIG_VIDEO_HI846 is not set
# CONFIG_VIDEO_HI847 is not set
CONFIG_VIDEO_IMX208=y
# CONFIG_VIDEO_IMX214 is not set
CONFIG_VIDEO_IMX219=m
CONFIG_VIDEO_IMX258=m
CONFIG_VIDEO_IMX274=y
CONFIG_VIDEO_IMX290=y
# CONFIG_VIDEO_IMX296 is not set
# CONFIG_VIDEO_IMX319 is not set
# CONFIG_VIDEO_IMX334 is not set
# CONFIG_VIDEO_IMX335 is not set
CONFIG_VIDEO_IMX355=y
CONFIG_VIDEO_IMX412=y
CONFIG_VIDEO_IMX415=m
CONFIG_VIDEO_MAX9271_LIB=m
CONFIG_VIDEO_MT9M001=m
# CONFIG_VIDEO_MT9M032 is not set
CONFIG_VIDEO_MT9M111=m
CONFIG_VIDEO_MT9P031=m
CONFIG_VIDEO_MT9T001=y
CONFIG_VIDEO_MT9T112=m
CONFIG_VIDEO_MT9V011=y
# CONFIG_VIDEO_MT9V032 is not set
CONFIG_VIDEO_MT9V111=m
CONFIG_VIDEO_NOON010PC30=y
CONFIG_VIDEO_OG01A1B=y
CONFIG_VIDEO_OV02A10=m
CONFIG_VIDEO_OV08D10=y
CONFIG_VIDEO_OV08X40=m
# CONFIG_VIDEO_OV13858 is not set
CONFIG_VIDEO_OV13B10=y
CONFIG_VIDEO_OV2640=m
CONFIG_VIDEO_OV2659=m
CONFIG_VIDEO_OV2680=m
CONFIG_VIDEO_OV2685=m
# CONFIG_VIDEO_OV2740 is not set
CONFIG_VIDEO_OV4689=m
CONFIG_VIDEO_OV5640=y
CONFIG_VIDEO_OV5645=y
CONFIG_VIDEO_OV5647=m
# CONFIG_VIDEO_OV5648 is not set
CONFIG_VIDEO_OV5670=y
CONFIG_VIDEO_OV5675=m
# CONFIG_VIDEO_OV5693 is not set
# CONFIG_VIDEO_OV5695 is not set
# CONFIG_VIDEO_OV6650 is not set
# CONFIG_VIDEO_OV7251 is not set
CONFIG_VIDEO_OV7640=m
CONFIG_VIDEO_OV7670=y
CONFIG_VIDEO_OV772X=m
CONFIG_VIDEO_OV7740=y
CONFIG_VIDEO_OV8856=m
CONFIG_VIDEO_OV8858=m
CONFIG_VIDEO_OV8865=y
# CONFIG_VIDEO_OV9282 is not set
CONFIG_VIDEO_OV9640=m
CONFIG_VIDEO_OV9650=y
# CONFIG_VIDEO_OV9734 is not set
CONFIG_VIDEO_RDACM20=m
# CONFIG_VIDEO_RDACM21 is not set
# CONFIG_VIDEO_RJ54N1 is not set
# CONFIG_VIDEO_S5K5BAF is not set
CONFIG_VIDEO_S5K6A3=y
CONFIG_VIDEO_S5K6AA=m
CONFIG_VIDEO_SR030PC30=y
CONFIG_VIDEO_ST_VGXY61=m
# CONFIG_VIDEO_VS6624 is not set
# CONFIG_VIDEO_ET8EK8 is not set
# CONFIG_VIDEO_M5MOLS is not set
# end of Camera sensor devices

#
# Lens drivers
#
# CONFIG_VIDEO_AD5820 is not set
CONFIG_VIDEO_AK7375=m
CONFIG_VIDEO_DW9714=y
CONFIG_VIDEO_DW9768=y
# CONFIG_VIDEO_DW9807_VCM is not set
# end of Lens drivers

#
# Flash devices
#
CONFIG_VIDEO_ADP1653=y
CONFIG_VIDEO_LM3560=y
CONFIG_VIDEO_LM3646=y
# end of Flash devices

#
# Audio decoders, processors and mixers
#
CONFIG_VIDEO_CS3308=y
# CONFIG_VIDEO_CS5345 is not set
CONFIG_VIDEO_CS53L32A=y
# CONFIG_VIDEO_MSP3400 is not set
CONFIG_VIDEO_SONY_BTF_MPX=m
# CONFIG_VIDEO_TDA7432 is not set
# CONFIG_VIDEO_TDA9840 is not set
CONFIG_VIDEO_TEA6415C=m
# CONFIG_VIDEO_TEA6420 is not set
CONFIG_VIDEO_TLV320AIC23B=m
CONFIG_VIDEO_TVAUDIO=y
# CONFIG_VIDEO_UDA1342 is not set
CONFIG_VIDEO_VP27SMPX=m
CONFIG_VIDEO_WM8739=y
CONFIG_VIDEO_WM8775=m
# end of Audio decoders, processors and mixers

#
# RDS decoders
#
CONFIG_VIDEO_SAA6588=y
# end of RDS decoders

#
# Video decoders
#
# CONFIG_VIDEO_ADV7180 is not set
# CONFIG_VIDEO_ADV7183 is not set
CONFIG_VIDEO_ADV748X=m
CONFIG_VIDEO_ADV7604=m
# CONFIG_VIDEO_ADV7604_CEC is not set
CONFIG_VIDEO_ADV7842=y
CONFIG_VIDEO_ADV7842_CEC=y
# CONFIG_VIDEO_BT819 is not set
# CONFIG_VIDEO_BT856 is not set
CONFIG_VIDEO_BT866=m
CONFIG_VIDEO_ISL7998X=y
# CONFIG_VIDEO_KS0127 is not set
# CONFIG_VIDEO_MAX9286 is not set
CONFIG_VIDEO_ML86V7667=y
CONFIG_VIDEO_SAA7110=y
# CONFIG_VIDEO_SAA711X is not set
CONFIG_VIDEO_TC358743=m
# CONFIG_VIDEO_TC358743_CEC is not set
CONFIG_VIDEO_TC358746=m
# CONFIG_VIDEO_TVP514X is not set
# CONFIG_VIDEO_TVP5150 is not set
CONFIG_VIDEO_TVP7002=y
CONFIG_VIDEO_TW2804=y
# CONFIG_VIDEO_TW9903 is not set
# CONFIG_VIDEO_TW9906 is not set
# CONFIG_VIDEO_TW9910 is not set
CONFIG_VIDEO_VPX3220=m

#
# Video and audio decoders
#
CONFIG_VIDEO_SAA717X=y
CONFIG_VIDEO_CX25840=y
# end of Video decoders

#
# Video encoders
#
CONFIG_VIDEO_AD9389B=y
# CONFIG_VIDEO_ADV7170 is not set
CONFIG_VIDEO_ADV7175=m
CONFIG_VIDEO_ADV7343=m
# CONFIG_VIDEO_ADV7393 is not set
CONFIG_VIDEO_AK881X=m
# CONFIG_VIDEO_SAA7127 is not set
CONFIG_VIDEO_SAA7185=m
CONFIG_VIDEO_THS8200=y
# end of Video encoders

#
# Video improvement chips
#
# CONFIG_VIDEO_UPD64031A is not set
# CONFIG_VIDEO_UPD64083 is not set
# end of Video improvement chips

#
# Audio/Video compression chips
#
CONFIG_VIDEO_SAA6752HS=y
# end of Audio/Video compression chips

#
# SDR tuner chips
#
# end of SDR tuner chips

#
# Miscellaneous helper chips
#
# CONFIG_VIDEO_I2C is not set
CONFIG_VIDEO_M52790=m
CONFIG_VIDEO_ST_MIPID02=y
CONFIG_VIDEO_THS7303=m
# end of Miscellaneous helper chips

CONFIG_MEDIA_TUNER=y

#
# Customize TV tuners
#
# CONFIG_MEDIA_TUNER_E4000 is not set
CONFIG_MEDIA_TUNER_FC0011=m
# CONFIG_MEDIA_TUNER_FC0012 is not set
CONFIG_MEDIA_TUNER_FC0013=m
CONFIG_MEDIA_TUNER_FC2580=y
CONFIG_MEDIA_TUNER_IT913X=m
CONFIG_MEDIA_TUNER_M88RS6000T=m
# CONFIG_MEDIA_TUNER_MAX2165 is not set
# CONFIG_MEDIA_TUNER_MC44S803 is not set
CONFIG_MEDIA_TUNER_MT2060=m
CONFIG_MEDIA_TUNER_MT2063=y
CONFIG_MEDIA_TUNER_MT20XX=y
# CONFIG_MEDIA_TUNER_MT2131 is not set
# CONFIG_MEDIA_TUNER_MT2266 is not set
# CONFIG_MEDIA_TUNER_MXL301RF is not set
# CONFIG_MEDIA_TUNER_MXL5005S is not set
# CONFIG_MEDIA_TUNER_MXL5007T is not set
CONFIG_MEDIA_TUNER_QM1D1B0004=y
CONFIG_MEDIA_TUNER_QM1D1C0042=y
# CONFIG_MEDIA_TUNER_QT1010 is not set
CONFIG_MEDIA_TUNER_R820T=y
CONFIG_MEDIA_TUNER_SI2157=m
# CONFIG_MEDIA_TUNER_SIMPLE is not set
# CONFIG_MEDIA_TUNER_TDA18212 is not set
# CONFIG_MEDIA_TUNER_TDA18218 is not set
CONFIG_MEDIA_TUNER_TDA18250=y
CONFIG_MEDIA_TUNER_TDA18271=m
CONFIG_MEDIA_TUNER_TDA827X=m
CONFIG_MEDIA_TUNER_TDA8290=m
CONFIG_MEDIA_TUNER_TDA9887=m
CONFIG_MEDIA_TUNER_TEA5761=m
CONFIG_MEDIA_TUNER_TEA5767=y
# CONFIG_MEDIA_TUNER_TUA9001 is not set
CONFIG_MEDIA_TUNER_XC2028=y
# CONFIG_MEDIA_TUNER_XC4000 is not set
# CONFIG_MEDIA_TUNER_XC5000 is not set
# end of Customize TV tuners

#
# Customise DVB Frontends
#

#
# Multistandard (satellite) frontends
#
# CONFIG_DVB_M88DS3103 is not set
# CONFIG_DVB_MXL5XX is not set
CONFIG_DVB_STB0899=m
CONFIG_DVB_STB6100=m
CONFIG_DVB_STV090x=m
# CONFIG_DVB_STV0910 is not set
CONFIG_DVB_STV6110x=m
CONFIG_DVB_STV6111=m

#
# Multistandard (cable + terrestrial) frontends
#
# CONFIG_DVB_DRXK is not set
CONFIG_DVB_MN88472=m
CONFIG_DVB_MN88473=y
# CONFIG_DVB_SI2165 is not set
CONFIG_DVB_TDA18271C2DD=m

#
# DVB-S (satellite) frontends
#
CONFIG_DVB_CX24110=y
# CONFIG_DVB_CX24116 is not set
# CONFIG_DVB_CX24117 is not set
CONFIG_DVB_CX24120=m
CONFIG_DVB_CX24123=m
# CONFIG_DVB_DS3000 is not set
# CONFIG_DVB_MB86A16 is not set
# CONFIG_DVB_MT312 is not set
CONFIG_DVB_S5H1420=y
# CONFIG_DVB_SI21XX is not set
# CONFIG_DVB_STB6000 is not set
# CONFIG_DVB_STV0288 is not set
CONFIG_DVB_STV0299=m
# CONFIG_DVB_STV0900 is not set
# CONFIG_DVB_STV6110 is not set
CONFIG_DVB_TDA10071=m
# CONFIG_DVB_TDA10086 is not set
CONFIG_DVB_TDA8083=y
CONFIG_DVB_TDA8261=m
# CONFIG_DVB_TDA826X is not set
CONFIG_DVB_TS2020=y
CONFIG_DVB_TUA6100=m
CONFIG_DVB_TUNER_CX24113=m
CONFIG_DVB_TUNER_ITD1000=m
CONFIG_DVB_VES1X93=y
# CONFIG_DVB_ZL10036 is not set
CONFIG_DVB_ZL10039=m

#
# DVB-T (terrestrial) frontends
#
# CONFIG_DVB_AF9013 is not set
# CONFIG_DVB_CX22700 is not set
CONFIG_DVB_CX22702=m
# CONFIG_DVB_CXD2820R is not set
CONFIG_DVB_CXD2841ER=y
# CONFIG_DVB_DIB3000MB is not set
CONFIG_DVB_DIB3000MC=y
CONFIG_DVB_DIB7000M=y
# CONFIG_DVB_DIB7000P is not set
# CONFIG_DVB_DIB9000 is not set
CONFIG_DVB_DRXD=y
# CONFIG_DVB_EC100 is not set
CONFIG_DVB_L64781=y
# CONFIG_DVB_MT352 is not set
# CONFIG_DVB_NXT6000 is not set
# CONFIG_DVB_RTL2830 is not set
# CONFIG_DVB_RTL2832 is not set
# CONFIG_DVB_S5H1432 is not set
# CONFIG_DVB_SI2168 is not set
# CONFIG_DVB_SP887X is not set
CONFIG_DVB_STV0367=m
CONFIG_DVB_TDA10048=y
CONFIG_DVB_TDA1004X=y
# CONFIG_DVB_ZD1301_DEMOD is not set
# CONFIG_DVB_ZL10353 is not set

#
# DVB-C (cable) frontends
#
# CONFIG_DVB_STV0297 is not set
CONFIG_DVB_TDA10021=y
# CONFIG_DVB_TDA10023 is not set
CONFIG_DVB_VES1820=m

#
# ATSC (North American/Korean Terrestrial/Cable DTV) frontends
#
CONFIG_DVB_AU8522=y
CONFIG_DVB_AU8522_DTV=y
CONFIG_DVB_AU8522_V4L=y
CONFIG_DVB_BCM3510=y
CONFIG_DVB_LG2160=m
CONFIG_DVB_LGDT3305=y
CONFIG_DVB_LGDT3306A=m
CONFIG_DVB_LGDT330X=m
CONFIG_DVB_MXL692=y
CONFIG_DVB_NXT200X=m
# CONFIG_DVB_OR51132 is not set
CONFIG_DVB_OR51211=m
CONFIG_DVB_S5H1409=m
# CONFIG_DVB_S5H1411 is not set

#
# ISDB-T (terrestrial) frontends
#
CONFIG_DVB_DIB8000=y
# CONFIG_DVB_MB86A20S is not set
CONFIG_DVB_S921=m

#
# ISDB-S (satellite) & ISDB-T (terrestrial) frontends
#
CONFIG_DVB_MN88443X=y
# CONFIG_DVB_TC90522 is not set

#
# Digital terrestrial only tuners/PLL
#
# CONFIG_DVB_PLL is not set
# CONFIG_DVB_TUNER_DIB0070 is not set
CONFIG_DVB_TUNER_DIB0090=m

#
# SEC control devices for DVB-S
#
CONFIG_DVB_A8293=y
CONFIG_DVB_AF9033=y
CONFIG_DVB_ASCOT2E=m
# CONFIG_DVB_ATBM8830 is not set
# CONFIG_DVB_HELENE is not set
# CONFIG_DVB_HORUS3A is not set
CONFIG_DVB_ISL6405=m
# CONFIG_DVB_ISL6421 is not set
CONFIG_DVB_ISL6423=m
CONFIG_DVB_IX2505V=y
CONFIG_DVB_LGS8GL5=y
CONFIG_DVB_LGS8GXX=y
CONFIG_DVB_LNBH25=m
CONFIG_DVB_LNBH29=y
CONFIG_DVB_LNBP21=y
CONFIG_DVB_LNBP22=m
# CONFIG_DVB_M88RS2000 is not set
# CONFIG_DVB_TDA665x is not set
CONFIG_DVB_DRX39XYJ=y

#
# Common Interface (EN50221) controller drivers
#
CONFIG_DVB_CXD2099=y
CONFIG_DVB_SP2=m
# end of Customise DVB Frontends
# end of Media ancillary drivers

#
# Graphics support
#
CONFIG_APERTURE_HELPERS=y
CONFIG_VIDEO_NOMODESET=y
# CONFIG_AGP is not set
# CONFIG_VGA_SWITCHEROO is not set
CONFIG_DRM=y
CONFIG_DRM_MIPI_DSI=y
CONFIG_DRM_DEBUG_MM=y
CONFIG_DRM_KMS_HELPER=y
CONFIG_DRM_DEBUG_DP_MST_TOPOLOGY_REFS=y
# CONFIG_DRM_DEBUG_MODESET_LOCK is not set
CONFIG_DRM_LOAD_EDID_FIRMWARE=y
CONFIG_DRM_DP_AUX_BUS=m
CONFIG_DRM_DISPLAY_HELPER=y
CONFIG_DRM_DISPLAY_DP_HELPER=y
CONFIG_DRM_DISPLAY_HDCP_HELPER=y
CONFIG_DRM_DP_AUX_CHARDEV=y
CONFIG_DRM_DP_CEC=y
CONFIG_DRM_GEM_DMA_HELPER=y
CONFIG_DRM_GEM_SHMEM_HELPER=y
CONFIG_DRM_SCHED=y

#
# I2C encoder or helper chips
#
CONFIG_DRM_I2C_CH7006=y
CONFIG_DRM_I2C_SIL164=m
CONFIG_DRM_I2C_NXP_TDA998X=y
CONFIG_DRM_I2C_NXP_TDA9950=m
# end of I2C encoder or helper chips

#
# ARM devices
#
# end of ARM devices

# CONFIG_DRM_RADEON is not set
# CONFIG_DRM_AMDGPU is not set
# CONFIG_DRM_NOUVEAU is not set
# CONFIG_DRM_I915 is not set
# CONFIG_DRM_VGEM is not set
CONFIG_DRM_VKMS=y
# CONFIG_DRM_VMWGFX is not set
# CONFIG_DRM_GMA500 is not set
# CONFIG_DRM_AST is not set
# CONFIG_DRM_MGAG200 is not set
# CONFIG_DRM_QXL is not set
CONFIG_DRM_PANEL=y

#
# Display Panels
#
CONFIG_DRM_PANEL_ARM_VERSATILE=m
CONFIG_DRM_PANEL_ASUS_Z00T_TM5P5_NT35596=m
CONFIG_DRM_PANEL_BOE_BF060Y8M_AJ0=m
CONFIG_DRM_PANEL_BOE_HIMAX8279D=m
CONFIG_DRM_PANEL_BOE_TV101WUM_NL6=m
CONFIG_DRM_PANEL_DSI_CM=m
CONFIG_DRM_PANEL_LVDS=m
CONFIG_DRM_PANEL_SIMPLE=m
CONFIG_DRM_PANEL_EDP=m
# CONFIG_DRM_PANEL_EBBG_FT8719 is not set
CONFIG_DRM_PANEL_ELIDA_KD35T133=m
CONFIG_DRM_PANEL_FEIXIN_K101_IM2BA02=m
CONFIG_DRM_PANEL_FEIYANG_FY07024DI26A30D=m
CONFIG_DRM_PANEL_HIMAX_HX8394=m
CONFIG_DRM_PANEL_ILITEK_ILI9881C=m
# CONFIG_DRM_PANEL_INNOLUX_P079ZCA is not set
CONFIG_DRM_PANEL_JADARD_JD9365DA_H3=m
CONFIG_DRM_PANEL_JDI_LT070ME05000=m
# CONFIG_DRM_PANEL_JDI_R63452 is not set
CONFIG_DRM_PANEL_KHADAS_TS050=m
CONFIG_DRM_PANEL_KINGDISPLAY_KD097D04=m
# CONFIG_DRM_PANEL_LEADTEK_LTK050H3146W is not set
# CONFIG_DRM_PANEL_LEADTEK_LTK500HD1829 is not set
# CONFIG_DRM_PANEL_NEWVISION_NV3051D is not set
CONFIG_DRM_PANEL_NOVATEK_NT35510=m
CONFIG_DRM_PANEL_NOVATEK_NT35560=m
# CONFIG_DRM_PANEL_NOVATEK_NT35950 is not set
CONFIG_DRM_PANEL_NOVATEK_NT36672A=m
# CONFIG_DRM_PANEL_MANTIX_MLAF057WE51 is not set
CONFIG_DRM_PANEL_OLIMEX_LCD_OLINUXINO=m
CONFIG_DRM_PANEL_ORISETECH_OTM8009A=m
CONFIG_DRM_PANEL_OSD_OSD101T2587_53TS=m
CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00=m
CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN=m
# CONFIG_DRM_PANEL_RAYDIUM_RM67191 is not set
CONFIG_DRM_PANEL_RAYDIUM_RM68200=m
CONFIG_DRM_PANEL_RONBO_RB070D30=m
CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20=m
CONFIG_DRM_PANEL_SAMSUNG_S6D16D0=m
CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2=m
CONFIG_DRM_PANEL_SAMSUNG_S6E63J0X03=m
CONFIG_DRM_PANEL_SAMSUNG_S6E63M0=m
CONFIG_DRM_PANEL_SAMSUNG_S6E63M0_DSI=m
CONFIG_DRM_PANEL_SAMSUNG_S6E88A0_AMS452EF01=m
# CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0 is not set
CONFIG_DRM_PANEL_SAMSUNG_SOFEF00=m
CONFIG_DRM_PANEL_SEIKO_43WVF1G=m
CONFIG_DRM_PANEL_SHARP_LQ101R1SX01=m
CONFIG_DRM_PANEL_SHARP_LS037V7DW01=m
# CONFIG_DRM_PANEL_SHARP_LS043T1LE01 is not set
# CONFIG_DRM_PANEL_SHARP_LS060T1SX01 is not set
# CONFIG_DRM_PANEL_SITRONIX_ST7701 is not set
CONFIG_DRM_PANEL_SITRONIX_ST7703=m
CONFIG_DRM_PANEL_SONY_TULIP_TRULY_NT35521=m
# CONFIG_DRM_PANEL_TDO_TL070WSH30 is not set
CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA=y
CONFIG_DRM_PANEL_VISIONOX_RM69299=y
CONFIG_DRM_PANEL_VISIONOX_VTDR6130=m
# CONFIG_DRM_PANEL_XINPENG_XPP055C272 is not set
# end of Display Panels

CONFIG_DRM_BRIDGE=y
CONFIG_DRM_PANEL_BRIDGE=y

#
# Display Interface Bridges
#
CONFIG_DRM_CHIPONE_ICN6211=y
# CONFIG_DRM_CHRONTEL_CH7033 is not set
# CONFIG_DRM_DISPLAY_CONNECTOR is not set
CONFIG_DRM_ITE_IT6505=m
CONFIG_DRM_LONTIUM_LT8912B=y
CONFIG_DRM_LONTIUM_LT9211=y
CONFIG_DRM_LONTIUM_LT9611=m
# CONFIG_DRM_LONTIUM_LT9611UXC is not set
# CONFIG_DRM_ITE_IT66121 is not set
# CONFIG_DRM_LVDS_CODEC is not set
# CONFIG_DRM_MEGACHIPS_STDPXXXX_GE_B850V3_FW is not set
# CONFIG_DRM_NXP_PTN3460 is not set
# CONFIG_DRM_PARADE_PS8622 is not set
# CONFIG_DRM_PARADE_PS8640 is not set
# CONFIG_DRM_SIL_SII8620 is not set
# CONFIG_DRM_SII902X is not set
CONFIG_DRM_SII9234=m
CONFIG_DRM_SIMPLE_BRIDGE=m
CONFIG_DRM_THINE_THC63LVD1024=y
# CONFIG_DRM_TOSHIBA_TC358762 is not set
# CONFIG_DRM_TOSHIBA_TC358764 is not set
# CONFIG_DRM_TOSHIBA_TC358767 is not set
# CONFIG_DRM_TOSHIBA_TC358768 is not set
CONFIG_DRM_TOSHIBA_TC358775=y
CONFIG_DRM_TI_DLPC3433=y
# CONFIG_DRM_TI_TFP410 is not set
CONFIG_DRM_TI_SN65DSI83=m
# CONFIG_DRM_TI_SN65DSI86 is not set
CONFIG_DRM_TI_TPD12S015=m
CONFIG_DRM_ANALOGIX_ANX6345=m
# CONFIG_DRM_ANALOGIX_ANX78XX is not set
CONFIG_DRM_ANALOGIX_DP=m
CONFIG_DRM_ANALOGIX_ANX7625=m
CONFIG_DRM_I2C_ADV7511=y
CONFIG_DRM_I2C_ADV7511_CEC=y
# CONFIG_DRM_CDNS_DSI is not set
# CONFIG_DRM_CDNS_MHDP8546 is not set
# end of Display Interface Bridges

CONFIG_DRM_ETNAVIV=y
CONFIG_DRM_ETNAVIV_THERMAL=y
CONFIG_DRM_LOGICVC=m
CONFIG_DRM_ARCPGU=y
# CONFIG_DRM_BOCHS is not set
# CONFIG_DRM_CIRRUS_QEMU is not set
CONFIG_DRM_SIMPLEDRM=y
# CONFIG_DRM_VBOXVIDEO is not set
# CONFIG_DRM_SSD130X is not set
CONFIG_DRM_LEGACY=y
CONFIG_DRM_PANEL_ORIENTATION_QUIRKS=y

#
# Frame buffer Devices
#
CONFIG_FB_CMDLINE=y
CONFIG_FB_NOTIFY=y
CONFIG_FB=m
# CONFIG_FIRMWARE_EDID is not set
CONFIG_FB_CFB_FILLRECT=m
CONFIG_FB_CFB_COPYAREA=m
CONFIG_FB_CFB_IMAGEBLIT=m
CONFIG_FB_SYS_FILLRECT=m
CONFIG_FB_SYS_COPYAREA=m
CONFIG_FB_SYS_IMAGEBLIT=m
# CONFIG_FB_FOREIGN_ENDIAN is not set
CONFIG_FB_SYS_FOPS=m
CONFIG_FB_DEFERRED_IO=y
CONFIG_FB_HECUBA=m
CONFIG_FB_BACKLIGHT=m
CONFIG_FB_MODE_HELPERS=y
CONFIG_FB_TILEBLITTING=y

#
# Frame buffer hardware drivers
#
# CONFIG_FB_CIRRUS is not set
# CONFIG_FB_PM2 is not set
# CONFIG_FB_CYBER2000 is not set
# CONFIG_FB_ARC is not set
# CONFIG_FB_VGA16 is not set
CONFIG_FB_N411=m
# CONFIG_FB_HGA is not set
# CONFIG_FB_OPENCORES is not set
CONFIG_FB_S1D13XXX=m
# CONFIG_FB_NVIDIA is not set
# CONFIG_FB_RIVA is not set
# CONFIG_FB_I740 is not set
# CONFIG_FB_LE80578 is not set
# CONFIG_FB_MATROX is not set
# CONFIG_FB_RADEON is not set
# CONFIG_FB_ATY128 is not set
# CONFIG_FB_ATY is not set
# CONFIG_FB_S3 is not set
# CONFIG_FB_SAVAGE is not set
# CONFIG_FB_SIS is not set
# CONFIG_FB_VIA is not set
# CONFIG_FB_NEOMAGIC is not set
# CONFIG_FB_KYRO is not set
# CONFIG_FB_3DFX is not set
# CONFIG_FB_VOODOO1 is not set
# CONFIG_FB_VT8623 is not set
# CONFIG_FB_TRIDENT is not set
# CONFIG_FB_ARK is not set
# CONFIG_FB_PM3 is not set
# CONFIG_FB_CARMINE is not set
# CONFIG_FB_GEODE is not set
CONFIG_FB_IBM_GXT4500=m
CONFIG_FB_GOLDFISH=m
# CONFIG_FB_VIRTUAL is not set
CONFIG_FB_METRONOME=m
# CONFIG_FB_MB862XX is not set
CONFIG_FB_SSD1307=m
# CONFIG_FB_SM712 is not set
# end of Frame buffer Devices

#
# Backlight & LCD device support
#
CONFIG_LCD_CLASS_DEVICE=m
CONFIG_LCD_PLATFORM=m
CONFIG_BACKLIGHT_CLASS_DEVICE=m
# CONFIG_BACKLIGHT_KTD253 is not set
CONFIG_BACKLIGHT_KTZ8866=m
CONFIG_BACKLIGHT_PWM=m
CONFIG_BACKLIGHT_MAX8925=m
CONFIG_BACKLIGHT_MT6370=m
# CONFIG_BACKLIGHT_APPLE is not set
# CONFIG_BACKLIGHT_QCOM_WLED is not set
CONFIG_BACKLIGHT_RT4831=m
# CONFIG_BACKLIGHT_SAHARA is not set
CONFIG_BACKLIGHT_WM831X=m
# CONFIG_BACKLIGHT_ADP5520 is not set
CONFIG_BACKLIGHT_ADP8860=m
CONFIG_BACKLIGHT_ADP8870=m
CONFIG_BACKLIGHT_88PM860X=m
CONFIG_BACKLIGHT_LM3630A=m
CONFIG_BACKLIGHT_LM3639=m
CONFIG_BACKLIGHT_LP855X=m
CONFIG_BACKLIGHT_LP8788=m
CONFIG_BACKLIGHT_SKY81452=m
CONFIG_BACKLIGHT_AS3711=m
# CONFIG_BACKLIGHT_GPIO is not set
# CONFIG_BACKLIGHT_LV5207LP is not set
CONFIG_BACKLIGHT_BD6107=m
CONFIG_BACKLIGHT_ARCXCNN=m
CONFIG_BACKLIGHT_LED=m
# end of Backlight & LCD device support

CONFIG_VIDEOMODE_HELPERS=y
CONFIG_HDMI=y
# CONFIG_LOGO is not set
# end of Graphics support

CONFIG_DRM_ACCEL=y
# CONFIG_SOUND is not set
# CONFIG_HID_SUPPORT is not set
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_SUPPORT=y
# CONFIG_USB_ULPI_BUS is not set
# CONFIG_USB_CONN_GPIO is not set
CONFIG_USB_ARCH_HAS_HCD=y
# CONFIG_USB is not set
CONFIG_USB_PCI=y

#
# USB dual-mode controller drivers
#

#
# USB port drivers
#

#
# USB Physical Layer drivers
#
# CONFIG_NOP_USB_XCEIV is not set
# CONFIG_USB_GPIO_VBUS is not set
# CONFIG_TAHVO_USB is not set
# end of USB Physical Layer drivers

# CONFIG_USB_GADGET is not set
# CONFIG_TYPEC is not set
# CONFIG_USB_ROLE_SWITCH is not set
CONFIG_MMC=m
# CONFIG_PWRSEQ_EMMC is not set
CONFIG_PWRSEQ_SIMPLE=m
CONFIG_SDIO_UART=m
# CONFIG_MMC_TEST is not set

#
# MMC/SD/SDIO Host Controller Drivers
#
CONFIG_MMC_DEBUG=y
# CONFIG_MMC_SDHCI is not set
CONFIG_MMC_WBSD=m
# CONFIG_MMC_TIFM_SD is not set
# CONFIG_MMC_CB710 is not set
# CONFIG_MMC_VIA_SDMMC is not set
# CONFIG_MMC_USDHI6ROL0 is not set
# CONFIG_MMC_CQHCI is not set
# CONFIG_MMC_HSQ is not set
# CONFIG_MMC_TOSHIBA_PCI is not set
CONFIG_MEMSTICK=y
CONFIG_MEMSTICK_DEBUG=y

#
# MemoryStick drivers
#
# CONFIG_MEMSTICK_UNSAFE_RESUME is not set

#
# MemoryStick Host Controller Drivers
#
# CONFIG_MEMSTICK_TIFM_MS is not set
# CONFIG_MEMSTICK_JMICRON_38X is not set
# CONFIG_MEMSTICK_R592 is not set
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=m
CONFIG_LEDS_CLASS_FLASH=m
# CONFIG_LEDS_CLASS_MULTICOLOR is not set
CONFIG_LEDS_BRIGHTNESS_HW_CHANGED=y

#
# LED drivers
#
CONFIG_LEDS_88PM860X=m
# CONFIG_LEDS_AN30259A is not set
# CONFIG_LEDS_AW2013 is not set
CONFIG_LEDS_BCM6328=m
CONFIG_LEDS_BCM6358=m
CONFIG_LEDS_LM3530=m
# CONFIG_LEDS_LM3532 is not set
CONFIG_LEDS_LM3642=m
CONFIG_LEDS_LM3692X=m
CONFIG_LEDS_PCA9532=m
CONFIG_LEDS_PCA9532_GPIO=y
CONFIG_LEDS_GPIO=m
CONFIG_LEDS_LP3944=m
# CONFIG_LEDS_LP3952 is not set
CONFIG_LEDS_LP50XX=m
CONFIG_LEDS_LP55XX_COMMON=m
CONFIG_LEDS_LP5521=m
# CONFIG_LEDS_LP5523 is not set
CONFIG_LEDS_LP5562=m
CONFIG_LEDS_LP8501=m
CONFIG_LEDS_LP8788=m
CONFIG_LEDS_LP8860=m
CONFIG_LEDS_PCA955X=m
CONFIG_LEDS_PCA955X_GPIO=y
CONFIG_LEDS_PCA963X=m
CONFIG_LEDS_WM831X_STATUS=m
# CONFIG_LEDS_WM8350 is not set
CONFIG_LEDS_PWM=m
CONFIG_LEDS_REGULATOR=m
CONFIG_LEDS_BD2802=m
# CONFIG_LEDS_LT3593 is not set
# CONFIG_LEDS_ADP5520 is not set
# CONFIG_LEDS_TCA6507 is not set
# CONFIG_LEDS_TLC591XX is not set
CONFIG_LEDS_MAX77650=m
CONFIG_LEDS_LM355x=m
# CONFIG_LEDS_OT200 is not set
# CONFIG_LEDS_IS31FL319X is not set
# CONFIG_LEDS_IS31FL32XX is not set

#
# LED driver for blink(1) USB RGB LED is under Special HID drivers (HID_THINGM)
#
# CONFIG_LEDS_BLINKM is not set
CONFIG_LEDS_MLXREG=m
CONFIG_LEDS_USER=m
# CONFIG_LEDS_NIC78BX is not set
CONFIG_LEDS_TI_LMU_COMMON=m
CONFIG_LEDS_LM3697=m
CONFIG_LEDS_TPS6105X=m
CONFIG_LEDS_LGM=m

#
# Flash and Torch LED drivers
#
CONFIG_LEDS_AAT1290=m
CONFIG_LEDS_AS3645A=m
CONFIG_LEDS_KTD2692=m
CONFIG_LEDS_LM3601X=m
# CONFIG_LEDS_MT6360 is not set
# CONFIG_LEDS_RT4505 is not set
# CONFIG_LEDS_RT8515 is not set
# CONFIG_LEDS_SGM3140 is not set

#
# RGB LED drivers
#

#
# LED Triggers
#
# CONFIG_LEDS_TRIGGERS is not set

#
# Simple LED drivers
#
# CONFIG_ACCESSIBILITY is not set
# CONFIG_INFINIBAND is not set
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_RTC_LIB=y
CONFIG_RTC_MC146818_LIB=y
CONFIG_RTC_CLASS=y
# CONFIG_RTC_HCTOSYS is not set
CONFIG_RTC_SYSTOHC=y
CONFIG_RTC_SYSTOHC_DEVICE="rtc0"
# CONFIG_RTC_DEBUG is not set
# CONFIG_RTC_NVMEM is not set

#
# RTC interfaces
#
CONFIG_RTC_INTF_SYSFS=y
# CONFIG_RTC_INTF_PROC is not set
# CONFIG_RTC_INTF_DEV is not set
# CONFIG_RTC_DRV_TEST is not set

#
# I2C RTC drivers
#
# CONFIG_RTC_DRV_88PM860X is not set
CONFIG_RTC_DRV_88PM80X=y
CONFIG_RTC_DRV_ABB5ZES3=m
CONFIG_RTC_DRV_ABEOZ9=y
CONFIG_RTC_DRV_ABX80X=y
# CONFIG_RTC_DRV_DS1307 is not set
# CONFIG_RTC_DRV_DS1374 is not set
CONFIG_RTC_DRV_DS1672=y
CONFIG_RTC_DRV_HYM8563=y
# CONFIG_RTC_DRV_LP8788 is not set
# CONFIG_RTC_DRV_MAX6900 is not set
CONFIG_RTC_DRV_MAX8925=m
# CONFIG_RTC_DRV_MAX77686 is not set
CONFIG_RTC_DRV_NCT3018Y=m
CONFIG_RTC_DRV_RK808=y
CONFIG_RTC_DRV_RS5C372=m
CONFIG_RTC_DRV_ISL1208=m
# CONFIG_RTC_DRV_ISL12022 is not set
# CONFIG_RTC_DRV_ISL12026 is not set
CONFIG_RTC_DRV_X1205=m
# CONFIG_RTC_DRV_PCF8523 is not set
# CONFIG_RTC_DRV_PCF85063 is not set
CONFIG_RTC_DRV_PCF85363=m
CONFIG_RTC_DRV_PCF8563=m
# CONFIG_RTC_DRV_PCF8583 is not set
CONFIG_RTC_DRV_M41T80=y
CONFIG_RTC_DRV_M41T80_WDT=y
CONFIG_RTC_DRV_BD70528=m
# CONFIG_RTC_DRV_BQ32K is not set
CONFIG_RTC_DRV_PALMAS=m
CONFIG_RTC_DRV_TPS6586X=y
CONFIG_RTC_DRV_TPS65910=m
# CONFIG_RTC_DRV_S35390A is not set
# CONFIG_RTC_DRV_FM3130 is not set
# CONFIG_RTC_DRV_RX8010 is not set
CONFIG_RTC_DRV_RX8581=y
CONFIG_RTC_DRV_RX8025=m
CONFIG_RTC_DRV_EM3027=y
CONFIG_RTC_DRV_RV3028=m
CONFIG_RTC_DRV_RV3032=m
CONFIG_RTC_DRV_RV8803=y
CONFIG_RTC_DRV_S5M=m
CONFIG_RTC_DRV_SD3078=y

#
# SPI RTC drivers
#
CONFIG_RTC_I2C_AND_SPI=y

#
# SPI and I2C RTC drivers
#
CONFIG_RTC_DRV_DS3232=m
# CONFIG_RTC_DRV_DS3232_HWMON is not set
# CONFIG_RTC_DRV_PCF2127 is not set
# CONFIG_RTC_DRV_RV3029C2 is not set
# CONFIG_RTC_DRV_RX6110 is not set

#
# Platform RTC drivers
#
CONFIG_RTC_DRV_CMOS=m
CONFIG_RTC_DRV_DS1286=m
# CONFIG_RTC_DRV_DS1511 is not set
# CONFIG_RTC_DRV_DS1553 is not set
# CONFIG_RTC_DRV_DS1685_FAMILY is not set
# CONFIG_RTC_DRV_DS1742 is not set
CONFIG_RTC_DRV_DS2404=y
CONFIG_RTC_DRV_DA9055=y
CONFIG_RTC_DRV_DA9063=y
CONFIG_RTC_DRV_STK17TA8=m
CONFIG_RTC_DRV_M48T86=m
# CONFIG_RTC_DRV_M48T35 is not set
CONFIG_RTC_DRV_M48T59=y
CONFIG_RTC_DRV_MSM6242=m
CONFIG_RTC_DRV_BQ4802=y
CONFIG_RTC_DRV_RP5C01=y
CONFIG_RTC_DRV_WM831X=m
CONFIG_RTC_DRV_WM8350=y
CONFIG_RTC_DRV_ZYNQMP=m
CONFIG_RTC_DRV_NTXEC=m

#
# on-CPU RTC drivers
#
# CONFIG_RTC_DRV_CADENCE is not set
CONFIG_RTC_DRV_FTRTC010=y
CONFIG_RTC_DRV_R7301=y

#
# HID Sensor RTC drivers
#
CONFIG_RTC_DRV_GOLDFISH=y
# CONFIG_DMADEVICES is not set

#
# DMABUF options
#
CONFIG_SYNC_FILE=y
# CONFIG_SW_SYNC is not set
# CONFIG_UDMABUF is not set
# CONFIG_DMABUF_MOVE_NOTIFY is not set
CONFIG_DMABUF_DEBUG=y
# CONFIG_DMABUF_SELFTESTS is not set
CONFIG_DMABUF_HEAPS=y
CONFIG_DMABUF_SYSFS_STATS=y
# CONFIG_DMABUF_HEAPS_SYSTEM is not set
# CONFIG_DMABUF_HEAPS_CMA is not set
# end of DMABUF options

CONFIG_AUXDISPLAY=y
CONFIG_CHARLCD=y
CONFIG_LINEDISP=m
CONFIG_HD44780_COMMON=y
CONFIG_HD44780=y
CONFIG_KS0108=m
CONFIG_KS0108_PORT=0x378
CONFIG_KS0108_DELAY=2
# CONFIG_CFAG12864B is not set
CONFIG_IMG_ASCII_LCD=m
# CONFIG_HT16K33 is not set
CONFIG_LCD2S=y
CONFIG_PARPORT_PANEL=y
CONFIG_PANEL_PARPORT=0
CONFIG_PANEL_PROFILE=5
# CONFIG_PANEL_CHANGE_MESSAGE is not set
# CONFIG_CHARLCD_BL_OFF is not set
# CONFIG_CHARLCD_BL_ON is not set
CONFIG_CHARLCD_BL_FLASH=y
CONFIG_PANEL=m
CONFIG_UIO=m
# CONFIG_UIO_CIF is not set
CONFIG_UIO_PDRV_GENIRQ=m
# CONFIG_UIO_DMEM_GENIRQ is not set
# CONFIG_UIO_AEC is not set
# CONFIG_UIO_SERCOS3 is not set
# CONFIG_UIO_PCI_GENERIC is not set
# CONFIG_UIO_NETX is not set
CONFIG_UIO_PRUSS=m
# CONFIG_UIO_MF624 is not set
CONFIG_UIO_DFL=m
CONFIG_VFIO=m
CONFIG_VFIO_CONTAINER=y
CONFIG_VFIO_IOMMU_TYPE1=m
# CONFIG_VFIO_NOIOMMU is not set
CONFIG_VFIO_PCI_MMAP=y
CONFIG_VFIO_PCI_INTX=y
# CONFIG_VFIO_PCI is not set
CONFIG_VFIO_MDEV=m
# CONFIG_VIRT_DRIVERS is not set
CONFIG_VIRTIO_ANCHOR=y
CONFIG_VIRTIO=y
# CONFIG_VIRTIO_MENU is not set
# CONFIG_VDPA is not set
# CONFIG_VHOST_MENU is not set

#
# Microsoft Hyper-V guest support
#
# end of Microsoft Hyper-V guest support

CONFIG_GREYBUS=y
CONFIG_COMEDI=m
# CONFIG_COMEDI_DEBUG is not set
CONFIG_COMEDI_DEFAULT_BUF_SIZE_KB=2048
CONFIG_COMEDI_DEFAULT_BUF_MAXSIZE_KB=20480
CONFIG_COMEDI_MISC_DRIVERS=y
CONFIG_COMEDI_BOND=m
# CONFIG_COMEDI_TEST is not set
# CONFIG_COMEDI_PARPORT is not set
CONFIG_COMEDI_SSV_DNP=m
CONFIG_COMEDI_ISA_DRIVERS=y
CONFIG_COMEDI_PCL711=m
# CONFIG_COMEDI_PCL724 is not set
# CONFIG_COMEDI_PCL726 is not set
# CONFIG_COMEDI_PCL730 is not set
CONFIG_COMEDI_PCL812=m
CONFIG_COMEDI_PCL816=m
# CONFIG_COMEDI_PCL818 is not set
CONFIG_COMEDI_PCM3724=m
CONFIG_COMEDI_AMPLC_DIO200_ISA=m
# CONFIG_COMEDI_AMPLC_PC236_ISA is not set
# CONFIG_COMEDI_AMPLC_PC263_ISA is not set
CONFIG_COMEDI_RTI800=m
CONFIG_COMEDI_RTI802=m
CONFIG_COMEDI_DAC02=m
CONFIG_COMEDI_DAS16M1=m
# CONFIG_COMEDI_DAS08_ISA is not set
CONFIG_COMEDI_DAS16=m
# CONFIG_COMEDI_DAS800 is not set
CONFIG_COMEDI_DAS1800=m
CONFIG_COMEDI_DAS6402=m
CONFIG_COMEDI_DT2801=m
CONFIG_COMEDI_DT2811=m
CONFIG_COMEDI_DT2814=m
CONFIG_COMEDI_DT2815=m
# CONFIG_COMEDI_DT2817 is not set
CONFIG_COMEDI_DT282X=m
CONFIG_COMEDI_DMM32AT=m
CONFIG_COMEDI_FL512=m
CONFIG_COMEDI_AIO_AIO12_8=m
# CONFIG_COMEDI_AIO_IIRO_16 is not set
# CONFIG_COMEDI_II_PCI20KC is not set
CONFIG_COMEDI_C6XDIGIO=m
CONFIG_COMEDI_MPC624=m
CONFIG_COMEDI_ADQ12B=m
# CONFIG_COMEDI_NI_AT_A2150 is not set
CONFIG_COMEDI_NI_AT_AO=m
CONFIG_COMEDI_NI_ATMIO=m
# CONFIG_COMEDI_NI_ATMIO16D is not set
CONFIG_COMEDI_NI_LABPC_ISA=m
CONFIG_COMEDI_PCMAD=m
# CONFIG_COMEDI_PCMDA12 is not set
CONFIG_COMEDI_PCMMIO=m
# CONFIG_COMEDI_PCMUIO is not set
CONFIG_COMEDI_MULTIQ3=m
# CONFIG_COMEDI_S526 is not set
# CONFIG_COMEDI_PCI_DRIVERS is not set
CONFIG_COMEDI_8254=m
CONFIG_COMEDI_8255=m
# CONFIG_COMEDI_8255_SA is not set
CONFIG_COMEDI_KCOMEDILIB=m
CONFIG_COMEDI_AMPLC_DIO200=m
CONFIG_COMEDI_ISADMA=m
CONFIG_COMEDI_NI_LABPC=m
CONFIG_COMEDI_NI_LABPC_ISADMA=m
CONFIG_COMEDI_NI_TIO=m
CONFIG_COMEDI_NI_ROUTING=m
# CONFIG_COMEDI_TESTS is not set
CONFIG_STAGING=y
# CONFIG_RTLLIB is not set

#
# IIO staging drivers
#

#
# Accelerometers
#
# end of Accelerometers

#
# Analog to digital converters
#
# end of Analog to digital converters

#
# Analog digital bi-direction converters
#
CONFIG_ADT7316=m
CONFIG_ADT7316_I2C=m
# end of Analog digital bi-direction converters

#
# Direct Digital Synthesis
#
# end of Direct Digital Synthesis

#
# Network Analyzer, Impedance Converters
#
# CONFIG_AD5933 is not set
# end of Network Analyzer, Impedance Converters

#
# Active energy metering IC
#
CONFIG_ADE7854=m
CONFIG_ADE7854_I2C=m
# end of Active energy metering IC

#
# Resolver to digital converters
#
# end of Resolver to digital converters
# end of IIO staging drivers

# CONFIG_FB_SM750 is not set
CONFIG_STAGING_MEDIA=y
# CONFIG_DVB_AV7110 is not set
# CONFIG_VIDEO_IPU3_IMGU is not set
CONFIG_VIDEO_MAX96712=y
CONFIG_STAGING_MEDIA_DEPRECATED=y

#
# Atmel media platform drivers
#
# CONFIG_KS7010 is not set
# CONFIG_GREYBUS_BOOTROM is not set
# CONFIG_GREYBUS_LIGHT is not set
CONFIG_GREYBUS_LOG=m
CONFIG_GREYBUS_LOOPBACK=y
CONFIG_GREYBUS_POWER=m
CONFIG_GREYBUS_RAW=m
CONFIG_GREYBUS_VIBRATOR=y
CONFIG_GREYBUS_BRIDGED_PHY=m
CONFIG_GREYBUS_GPIO=m
# CONFIG_GREYBUS_I2C is not set
CONFIG_GREYBUS_PWM=m
CONFIG_GREYBUS_SDIO=m
CONFIG_GREYBUS_UART=m
CONFIG_XIL_AXIS_FIFO=m
CONFIG_FIELDBUS_DEV=m
# CONFIG_HMS_ANYBUSS_BUS is not set
# CONFIG_QLGE is not set
# CONFIG_VME_BUS is not set
CONFIG_GOLDFISH_PIPE=y
# CONFIG_CHROME_PLATFORMS is not set
# CONFIG_MELLANOX_PLATFORM is not set
CONFIG_SURFACE_PLATFORMS=y
# CONFIG_SURFACE_3_POWER_OPREGION is not set
# CONFIG_SURFACE_HOTPLUG is not set
# CONFIG_SURFACE_PRO3_BUTTON is not set
# CONFIG_SURFACE_AGGREGATOR is not set
# CONFIG_X86_PLATFORM_DEVICES is not set
# CONFIG_P2SB is not set
# CONFIG_COMMON_CLK is not set
CONFIG_HWSPINLOCK=y

#
# Clock Source drivers
#
CONFIG_CLKSRC_I8253=y
CONFIG_CLKEVT_I8253=y
CONFIG_I8253_LOCK=y
CONFIG_CLKBLD_I8253=y
# end of Clock Source drivers

CONFIG_MAILBOX=y
CONFIG_PLATFORM_MHU=m
# CONFIG_PCC is not set
CONFIG_ALTERA_MBOX=y
# CONFIG_MAILBOX_TEST is not set
CONFIG_IOMMU_IOVA=y
CONFIG_IOMMU_API=y
CONFIG_IOMMU_SUPPORT=y

#
# Generic IOMMU Pagetable Support
#
# end of Generic IOMMU Pagetable Support

CONFIG_IOMMU_DEBUGFS=y
# CONFIG_IOMMU_DEFAULT_DMA_STRICT is not set
CONFIG_IOMMU_DEFAULT_DMA_LAZY=y
# CONFIG_IOMMU_DEFAULT_PASSTHROUGH is not set
CONFIG_OF_IOMMU=y
CONFIG_IOMMU_DMA=y
CONFIG_IOMMUFD=m
CONFIG_VIRTIO_IOMMU=y

#
# Remoteproc drivers
#
# CONFIG_REMOTEPROC is not set
# end of Remoteproc drivers

#
# Rpmsg drivers
#
CONFIG_RPMSG=y
# CONFIG_RPMSG_CHAR is not set
# CONFIG_RPMSG_CTRL is not set
CONFIG_RPMSG_NS=y
CONFIG_RPMSG_QCOM_GLINK=y
CONFIG_RPMSG_QCOM_GLINK_RPM=y
CONFIG_RPMSG_VIRTIO=y
# end of Rpmsg drivers

CONFIG_SOUNDWIRE=m

#
# SoundWire Devices
#

#
# SOC (System On Chip) specific Drivers
#

#
# Amlogic SoC drivers
#
# end of Amlogic SoC drivers

#
# Broadcom SoC drivers
#
# end of Broadcom SoC drivers

#
# NXP/Freescale QorIQ SoC drivers
#
# end of NXP/Freescale QorIQ SoC drivers

#
# fujitsu SoC drivers
#
# end of fujitsu SoC drivers

#
# i.MX SoC drivers
#
# end of i.MX SoC drivers

#
# Enable LiteX SoC Builder specific drivers
#
# CONFIG_LITEX_SOC_CONTROLLER is not set
# end of Enable LiteX SoC Builder specific drivers

CONFIG_WPCM450_SOC=y

#
# Qualcomm SoC drivers
#
# end of Qualcomm SoC drivers

# CONFIG_SOC_TI is not set

#
# Xilinx SoC drivers
#
# end of Xilinx SoC drivers
# end of SOC (System On Chip) specific Drivers

CONFIG_PM_DEVFREQ=y

#
# DEVFREQ Governors
#
CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND=y
CONFIG_DEVFREQ_GOV_PERFORMANCE=m
CONFIG_DEVFREQ_GOV_POWERSAVE=y
CONFIG_DEVFREQ_GOV_USERSPACE=y
CONFIG_DEVFREQ_GOV_PASSIVE=y

#
# DEVFREQ Drivers
#
CONFIG_PM_DEVFREQ_EVENT=y
CONFIG_EXTCON=y

#
# Extcon Device Drivers
#
CONFIG_EXTCON_ADC_JACK=m
# CONFIG_EXTCON_FSA9480 is not set
CONFIG_EXTCON_GPIO=y
# CONFIG_EXTCON_INTEL_INT3496 is not set
CONFIG_EXTCON_MAX3355=y
CONFIG_EXTCON_MAX77843=m
# CONFIG_EXTCON_PALMAS is not set
CONFIG_EXTCON_PTN5150=m
# CONFIG_EXTCON_RT8973A is not set
CONFIG_EXTCON_SM5502=m
CONFIG_EXTCON_USB_GPIO=m
CONFIG_MEMORY=y
# CONFIG_FPGA_DFL_EMIF is not set
CONFIG_IIO=m
CONFIG_IIO_BUFFER=y
CONFIG_IIO_BUFFER_CB=m
CONFIG_IIO_BUFFER_DMA=m
CONFIG_IIO_BUFFER_DMAENGINE=m
CONFIG_IIO_BUFFER_HW_CONSUMER=m
CONFIG_IIO_KFIFO_BUF=m
CONFIG_IIO_TRIGGERED_BUFFER=m
CONFIG_IIO_CONFIGFS=m
CONFIG_IIO_TRIGGER=y
CONFIG_IIO_CONSUMERS_PER_TRIGGER=2
CONFIG_IIO_SW_DEVICE=m
CONFIG_IIO_SW_TRIGGER=m
CONFIG_IIO_TRIGGERED_EVENT=m

#
# Accelerometers
#
CONFIG_ADXL313=m
CONFIG_ADXL313_I2C=m
CONFIG_ADXL345=m
CONFIG_ADXL345_I2C=m
CONFIG_ADXL355=m
CONFIG_ADXL355_I2C=m
CONFIG_ADXL367=m
CONFIG_ADXL367_I2C=m
CONFIG_ADXL372=m
CONFIG_ADXL372_I2C=m
CONFIG_BMA180=m
# CONFIG_BMA400 is not set
# CONFIG_BMC150_ACCEL is not set
CONFIG_DA280=m
CONFIG_DA311=m
# CONFIG_DMARD06 is not set
# CONFIG_DMARD09 is not set
CONFIG_DMARD10=m
CONFIG_FXLS8962AF=m
CONFIG_FXLS8962AF_I2C=m
CONFIG_IIO_ST_ACCEL_3AXIS=m
CONFIG_IIO_ST_ACCEL_I2C_3AXIS=m
CONFIG_IIO_KX022A=m
CONFIG_IIO_KX022A_I2C=m
CONFIG_KXSD9=m
# CONFIG_KXSD9_I2C is not set
CONFIG_KXCJK1013=m
CONFIG_MC3230=m
# CONFIG_MMA7455_I2C is not set
CONFIG_MMA7660=m
CONFIG_MMA8452=m
CONFIG_MMA9551_CORE=m
# CONFIG_MMA9551 is not set
CONFIG_MMA9553=m
CONFIG_MSA311=m
CONFIG_MXC4005=m
CONFIG_MXC6255=m
CONFIG_STK8312=m
CONFIG_STK8BA50=m
# end of Accelerometers

#
# Analog to digital converters
#
CONFIG_AD7091R5=m
CONFIG_AD7291=m
CONFIG_AD7606=m
CONFIG_AD7606_IFACE_PARALLEL=m
CONFIG_AD799X=m
CONFIG_ADI_AXI_ADC=m
CONFIG_AXP20X_ADC=m
# CONFIG_AXP288_ADC is not set
CONFIG_ENVELOPE_DETECTOR=m
CONFIG_HX711=m
# CONFIG_INA2XX_ADC is not set
CONFIG_LP8788_ADC=m
CONFIG_LTC2471=m
CONFIG_LTC2485=m
CONFIG_LTC2497=m
# CONFIG_MAX1363 is not set
CONFIG_MAX9611=m
CONFIG_MCP3422=m
CONFIG_MEDIATEK_MT6360_ADC=m
CONFIG_MEDIATEK_MT6370_ADC=m
CONFIG_MEN_Z188_ADC=m
CONFIG_MP2629_ADC=m
CONFIG_NAU7802=m
CONFIG_PALMAS_GPADC=m
# CONFIG_QCOM_SPMI_IADC is not set
# CONFIG_QCOM_SPMI_VADC is not set
# CONFIG_QCOM_SPMI_ADC5 is not set
# CONFIG_RICHTEK_RTQ6056 is not set
CONFIG_SD_ADC_MODULATOR=m
CONFIG_STMPE_ADC=m
CONFIG_TI_ADC081C=m
CONFIG_TI_ADS1015=m
# CONFIG_TI_ADS7924 is not set
CONFIG_TI_AM335X_ADC=m
CONFIG_VF610_ADC=m
CONFIG_XILINX_XADC=m
# end of Analog to digital converters

#
# Analog to digital and digital to analog converters
#
# CONFIG_STX104 is not set
# end of Analog to digital and digital to analog converters

#
# Analog Front Ends
#
CONFIG_IIO_RESCALE=m
# end of Analog Front Ends

#
# Amplifiers
#
# CONFIG_HMC425 is not set
# end of Amplifiers

#
# Capacitance to digital converters
#
CONFIG_AD7150=m
CONFIG_AD7746=m
# end of Capacitance to digital converters

#
# Chemical Sensors
#
CONFIG_ATLAS_PH_SENSOR=m
CONFIG_ATLAS_EZO_SENSOR=m
CONFIG_BME680=m
CONFIG_BME680_I2C=m
CONFIG_CCS811=m
CONFIG_IAQCORE=m
# CONFIG_PMS7003 is not set
CONFIG_SCD30_CORE=m
# CONFIG_SCD30_I2C is not set
# CONFIG_SCD30_SERIAL is not set
# CONFIG_SCD4X is not set
# CONFIG_SENSIRION_SGP30 is not set
# CONFIG_SENSIRION_SGP40 is not set
CONFIG_SPS30=m
# CONFIG_SPS30_I2C is not set
CONFIG_SPS30_SERIAL=m
CONFIG_SENSEAIR_SUNRISE_CO2=m
CONFIG_VZ89X=m
# end of Chemical Sensors

#
# Hid Sensor IIO Common
#
# end of Hid Sensor IIO Common

#
# IIO SCMI Sensors
#
# end of IIO SCMI Sensors

#
# SSP Sensor Common
#
# end of SSP Sensor Common

CONFIG_IIO_ST_SENSORS_I2C=m
CONFIG_IIO_ST_SENSORS_CORE=m

#
# Digital to analog converters
#
# CONFIG_AD5064 is not set
CONFIG_AD5380=m
CONFIG_AD5446=m
# CONFIG_AD5593R is not set
CONFIG_AD5686=m
CONFIG_AD5696_I2C=m
CONFIG_CIO_DAC=m
CONFIG_DPOT_DAC=m
CONFIG_DS4424=m
CONFIG_M62332=m
# CONFIG_MAX517 is not set
# CONFIG_MAX5821 is not set
CONFIG_MCP4725=m
# CONFIG_TI_DAC5571 is not set
# CONFIG_VF610_DAC is not set
# end of Digital to analog converters

#
# IIO dummy driver
#
CONFIG_IIO_SIMPLE_DUMMY=m
# CONFIG_IIO_SIMPLE_DUMMY_EVENTS is not set
CONFIG_IIO_SIMPLE_DUMMY_BUFFER=y
# end of IIO dummy driver

#
# Filters
#
# end of Filters

#
# Frequency Synthesizers DDS/PLL
#

#
# Clock Generator/Distribution
#
# end of Clock Generator/Distribution

#
# Phase-Locked Loop (PLL) frequency synthesizers
#
# end of Phase-Locked Loop (PLL) frequency synthesizers
# end of Frequency Synthesizers DDS/PLL

#
# Digital gyroscope sensors
#
CONFIG_BMG160=m
CONFIG_BMG160_I2C=m
# CONFIG_FXAS21002C is not set
# CONFIG_MPU3050_I2C is not set
# CONFIG_IIO_ST_GYRO_3AXIS is not set
# CONFIG_ITG3200 is not set
# end of Digital gyroscope sensors

#
# Health Sensors
#

#
# Heart Rate Monitors
#
CONFIG_AFE4404=m
CONFIG_MAX30100=m
# CONFIG_MAX30102 is not set
# end of Heart Rate Monitors
# end of Health Sensors

#
# Humidity sensors
#
CONFIG_AM2315=m
# CONFIG_DHT11 is not set
CONFIG_HDC100X=m
# CONFIG_HDC2010 is not set
CONFIG_HTS221=m
CONFIG_HTS221_I2C=m
# CONFIG_HTU21 is not set
CONFIG_SI7005=m
CONFIG_SI7020=m
# end of Humidity sensors

#
# Inertial measurement units
#
CONFIG_BMI160=m
CONFIG_BMI160_I2C=m
# CONFIG_BOSCH_BNO055_SERIAL is not set
# CONFIG_BOSCH_BNO055_I2C is not set
CONFIG_FXOS8700=m
CONFIG_FXOS8700_I2C=m
CONFIG_KMX61=m
CONFIG_INV_ICM42600=m
CONFIG_INV_ICM42600_I2C=m
CONFIG_INV_MPU6050_IIO=m
CONFIG_INV_MPU6050_I2C=m
CONFIG_IIO_ST_LSM6DSX=m
CONFIG_IIO_ST_LSM6DSX_I2C=m
CONFIG_IIO_ST_LSM9DS0=m
CONFIG_IIO_ST_LSM9DS0_I2C=m
# end of Inertial measurement units

#
# Light sensors
#
# CONFIG_ACPI_ALS is not set
CONFIG_ADJD_S311=m
# CONFIG_ADUX1020 is not set
CONFIG_AL3010=m
CONFIG_AL3320A=m
CONFIG_APDS9300=m
CONFIG_APDS9960=m
CONFIG_AS73211=m
CONFIG_BH1750=m
# CONFIG_BH1780 is not set
CONFIG_CM32181=m
# CONFIG_CM3232 is not set
# CONFIG_CM3323 is not set
CONFIG_CM3605=m
CONFIG_CM36651=m
# CONFIG_GP2AP002 is not set
CONFIG_GP2AP020A00F=m
CONFIG_SENSORS_ISL29018=m
CONFIG_SENSORS_ISL29028=m
# CONFIG_ISL29125 is not set
CONFIG_JSA1212=m
# CONFIG_RPR0521 is not set
CONFIG_LTR501=m
CONFIG_LTRF216A=m
CONFIG_LV0104CS=m
CONFIG_MAX44000=m
# CONFIG_MAX44009 is not set
# CONFIG_NOA1305 is not set
# CONFIG_OPT3001 is not set
CONFIG_PA12203001=m
# CONFIG_SI1133 is not set
CONFIG_SI1145=m
# CONFIG_STK3310 is not set
CONFIG_ST_UVIS25=m
CONFIG_ST_UVIS25_I2C=m
CONFIG_TCS3414=m
CONFIG_TCS3472=m
CONFIG_SENSORS_TSL2563=m
CONFIG_TSL2583=m
CONFIG_TSL2591=m
# CONFIG_TSL2772 is not set
# CONFIG_TSL4531 is not set
CONFIG_US5182D=m
# CONFIG_VCNL4000 is not set
CONFIG_VCNL4035=m
# CONFIG_VEML6030 is not set
CONFIG_VEML6070=m
# CONFIG_VL6180 is not set
# CONFIG_ZOPT2201 is not set
# end of Light sensors

#
# Magnetometer sensors
#
CONFIG_AK8974=m
CONFIG_AK8975=m
CONFIG_AK09911=m
CONFIG_BMC150_MAGN=m
CONFIG_BMC150_MAGN_I2C=m
# CONFIG_MAG3110 is not set
# CONFIG_MMC35240 is not set
CONFIG_IIO_ST_MAGN_3AXIS=m
CONFIG_IIO_ST_MAGN_I2C_3AXIS=m
CONFIG_SENSORS_HMC5843=m
CONFIG_SENSORS_HMC5843_I2C=m
CONFIG_SENSORS_RM3100=m
CONFIG_SENSORS_RM3100_I2C=m
CONFIG_TI_TMAG5273=m
CONFIG_YAMAHA_YAS530=m
# end of Magnetometer sensors

#
# Multiplexers
#
CONFIG_IIO_MUX=m
# end of Multiplexers

#
# Inclinometer sensors
#
# end of Inclinometer sensors

#
# Triggers - standalone
#
# CONFIG_IIO_HRTIMER_TRIGGER is not set
CONFIG_IIO_INTERRUPT_TRIGGER=m
CONFIG_IIO_TIGHTLOOP_TRIGGER=m
# CONFIG_IIO_SYSFS_TRIGGER is not set
# end of Triggers - standalone

#
# Linear and angular position sensors
#
# end of Linear and angular position sensors

#
# Digital potentiometers
#
CONFIG_AD5110=m
CONFIG_AD5272=m
# CONFIG_DS1803 is not set
CONFIG_MAX5432=m
CONFIG_MCP4018=m
CONFIG_MCP4531=m
CONFIG_TPL0102=m
# end of Digital potentiometers

#
# Digital potentiostats
#
CONFIG_LMP91000=m
# end of Digital potentiostats

#
# Pressure sensors
#
# CONFIG_ABP060MG is not set
# CONFIG_BMP280 is not set
# CONFIG_DLHL60D is not set
# CONFIG_DPS310 is not set
CONFIG_HP03=m
# CONFIG_ICP10100 is not set
CONFIG_MPL115=m
CONFIG_MPL115_I2C=m
CONFIG_MPL3115=m
# CONFIG_MS5611 is not set
# CONFIG_MS5637 is not set
CONFIG_IIO_ST_PRESS=m
# CONFIG_IIO_ST_PRESS_I2C is not set
CONFIG_T5403=m
CONFIG_HP206C=m
# CONFIG_ZPA2326 is not set
# end of Pressure sensors

#
# Lightning sensors
#
# end of Lightning sensors

#
# Proximity and distance sensors
#
# CONFIG_ISL29501 is not set
# CONFIG_LIDAR_LITE_V2 is not set
CONFIG_MB1232=m
CONFIG_PING=m
# CONFIG_RFD77402 is not set
CONFIG_SRF04=m
CONFIG_SX_COMMON=m
CONFIG_SX9310=m
# CONFIG_SX9324 is not set
# CONFIG_SX9360 is not set
# CONFIG_SX9500 is not set
CONFIG_SRF08=m
CONFIG_VCNL3020=m
CONFIG_VL53L0X_I2C=m
# end of Proximity and distance sensors

#
# Resolver to digital converters
#
# end of Resolver to digital converters

#
# Temperature sensors
#
CONFIG_MLX90614=m
# CONFIG_MLX90632 is not set
# CONFIG_TMP006 is not set
CONFIG_TMP007=m
# CONFIG_TMP117 is not set
# CONFIG_TSYS01 is not set
# CONFIG_TSYS02D is not set
# CONFIG_MAX30208 is not set
# end of Temperature sensors

# CONFIG_NTB is not set
CONFIG_PWM=y
CONFIG_PWM_SYSFS=y
CONFIG_PWM_DEBUG=y
# CONFIG_PWM_ATMEL_TCB is not set
# CONFIG_PWM_DWC is not set
CONFIG_PWM_FSL_FTM=y
CONFIG_PWM_INTEL_LGM=y
CONFIG_PWM_LP3943=m
CONFIG_PWM_LPSS=y
# CONFIG_PWM_LPSS_PCI is not set
CONFIG_PWM_LPSS_PLATFORM=y
# CONFIG_PWM_NTXEC is not set
CONFIG_PWM_PCA9685=y
# CONFIG_PWM_STMPE is not set

#
# IRQ chip support
#
CONFIG_IRQCHIP=y
CONFIG_AL_FIC=y
CONFIG_MADERA_IRQ=m
CONFIG_XILINX_INTC=y
# end of IRQ chip support

# CONFIG_IPACK_BUS is not set
CONFIG_RESET_CONTROLLER=y
CONFIG_RESET_INTEL_GW=y
CONFIG_RESET_SIMPLE=y
# CONFIG_RESET_TI_SYSCON is not set
CONFIG_RESET_TI_TPS380X=y

#
# PHY Subsystem
#
CONFIG_GENERIC_PHY=y
CONFIG_GENERIC_PHY_MIPI_DPHY=y
# CONFIG_USB_LGM_PHY is not set
# CONFIG_PHY_CAN_TRANSCEIVER is not set

#
# PHY drivers for Broadcom platforms
#
# CONFIG_BCM_KONA_USB2_PHY is not set
# end of PHY drivers for Broadcom platforms

CONFIG_PHY_CADENCE_DPHY=m
CONFIG_PHY_CADENCE_DPHY_RX=y
# CONFIG_PHY_CADENCE_SALVO is not set
# CONFIG_PHY_PXA_28NM_HSIC is not set
CONFIG_PHY_PXA_28NM_USB2=m
CONFIG_PHY_LAN966X_SERDES=m
# CONFIG_PHY_CPCAP_USB is not set
# CONFIG_PHY_MAPPHONE_MDM6600 is not set
# CONFIG_PHY_OCELOT_SERDES is not set
# CONFIG_PHY_INTEL_LGM_COMBO is not set
# CONFIG_PHY_INTEL_LGM_EMMC is not set
# end of PHY Subsystem

CONFIG_POWERCAP=y
# CONFIG_IDLE_INJECT is not set
CONFIG_DTPM=y
CONFIG_MCB=m
# CONFIG_MCB_PCI is not set
CONFIG_MCB_LPC=m

#
# Performance monitor support
#
# end of Performance monitor support

# CONFIG_RAS is not set
# CONFIG_USB4 is not set

#
# Android
#
CONFIG_ANDROID_BINDER_IPC=y
CONFIG_ANDROID_BINDERFS=y
CONFIG_ANDROID_BINDER_DEVICES="binder,hwbinder,vndbinder"
# CONFIG_ANDROID_BINDER_IPC_SELFTEST is not set
# end of Android

# CONFIG_DAX is not set
CONFIG_NVMEM=y
# CONFIG_NVMEM_SYSFS is not set
CONFIG_NVMEM_RMEM=m
CONFIG_NVMEM_SPMI_SDAM=m

#
# HW tracing support
#
# CONFIG_STM is not set
CONFIG_INTEL_TH=y
# CONFIG_INTEL_TH_PCI is not set
# CONFIG_INTEL_TH_ACPI is not set
CONFIG_INTEL_TH_GTH=m
CONFIG_INTEL_TH_MSU=y
# CONFIG_INTEL_TH_PTI is not set
# CONFIG_INTEL_TH_DEBUG is not set
# end of HW tracing support

CONFIG_FPGA=m
CONFIG_ALTERA_PR_IP_CORE=m
CONFIG_ALTERA_PR_IP_CORE_PLAT=m
# CONFIG_FPGA_MGR_ALTERA_CVP is not set
CONFIG_FPGA_BRIDGE=m
CONFIG_ALTERA_FREEZE_BRIDGE=m
CONFIG_XILINX_PR_DECOUPLER=m
CONFIG_FPGA_REGION=m
CONFIG_OF_FPGA_REGION=m
CONFIG_FPGA_DFL=m
CONFIG_FPGA_DFL_FME=m
# CONFIG_FPGA_DFL_FME_MGR is not set
CONFIG_FPGA_DFL_FME_BRIDGE=m
# CONFIG_FPGA_DFL_FME_REGION is not set
CONFIG_FPGA_DFL_AFU=m
CONFIG_FPGA_DFL_NIOS_INTEL_PAC_N3000=m
# CONFIG_FPGA_DFL_PCI is not set
# CONFIG_FPGA_M10_BMC_SEC_UPDATE is not set
CONFIG_FSI=m
CONFIG_FSI_NEW_DEV_NODE=y
CONFIG_FSI_MASTER_GPIO=m
CONFIG_FSI_MASTER_HUB=m
CONFIG_FSI_MASTER_ASPEED=m
CONFIG_FSI_SCOM=m
CONFIG_FSI_SBEFIFO=m
# CONFIG_FSI_OCC is not set
CONFIG_MULTIPLEXER=m

#
# Multiplexer drivers
#
CONFIG_MUX_ADG792A=m
CONFIG_MUX_GPIO=m
CONFIG_MUX_MMIO=m
# end of Multiplexer drivers

CONFIG_PM_OPP=y
CONFIG_SIOX=m
CONFIG_SIOX_BUS_GPIO=m
# CONFIG_SLIMBUS is not set
CONFIG_INTERCONNECT=y
CONFIG_COUNTER=y
CONFIG_104_QUAD_8=m
# CONFIG_INTEL_QEP is not set
# CONFIG_INTERRUPT_CNT is not set
# CONFIG_MOST is not set
# CONFIG_PECI is not set
# CONFIG_HTE is not set
# end of Device Drivers

#
# File systems
#
CONFIG_DCACHE_WORD_ACCESS=y
CONFIG_VALIDATE_FS_PARSER=y
CONFIG_FS_POSIX_ACL=y
CONFIG_EXPORTFS=y
CONFIG_EXPORTFS_BLOCK_OPS=y
CONFIG_FILE_LOCKING=y
CONFIG_FS_ENCRYPTION=y
# CONFIG_FS_VERITY is not set
CONFIG_FSNOTIFY=y
CONFIG_DNOTIFY=y
CONFIG_INOTIFY_USER=y
# CONFIG_FANOTIFY is not set
CONFIG_QUOTA=y
# CONFIG_QUOTA_NETLINK_INTERFACE is not set
# CONFIG_PRINT_QUOTA_WARNING is not set
CONFIG_QUOTA_DEBUG=y
CONFIG_QUOTA_TREE=y
CONFIG_QFMT_V1=y
CONFIG_QFMT_V2=y
CONFIG_QUOTACTL=y
# CONFIG_AUTOFS4_FS is not set
CONFIG_AUTOFS_FS=y
CONFIG_FUSE_FS=m
CONFIG_CUSE=m
CONFIG_VIRTIO_FS=m
# CONFIG_OVERLAY_FS is not set

#
# Caches
#
CONFIG_NETFS_SUPPORT=y
CONFIG_NETFS_STATS=y
CONFIG_FSCACHE=y
CONFIG_FSCACHE_STATS=y
CONFIG_FSCACHE_DEBUG=y
# end of Caches

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
# CONFIG_PROC_KCORE is not set
CONFIG_PROC_VMCORE=y
CONFIG_PROC_VMCORE_DEVICE_DUMP=y
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_PROC_CHILDREN=y
CONFIG_PROC_PID_ARCH_STATUS=y
CONFIG_KERNFS=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_TMPFS_XATTR=y
# CONFIG_TMPFS_QUOTA is not set
CONFIG_HUGETLBFS=y
CONFIG_HUGETLB_PAGE=y
CONFIG_MEMFD_CREATE=y
CONFIG_CONFIGFS_FS=m
# end of Pseudo filesystems

CONFIG_MISC_FILESYSTEMS=y
CONFIG_ORANGEFS_FS=y
# CONFIG_ECRYPT_FS is not set
CONFIG_CRAMFS=y
# CONFIG_PSTORE is not set
CONFIG_NETWORK_FILESYSTEMS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V2=y
CONFIG_NFS_V3=y
# CONFIG_NFS_V3_ACL is not set
CONFIG_NFS_V4=m
# CONFIG_NFS_V4_1 is not set
# CONFIG_ROOT_NFS is not set
# CONFIG_NFS_FSCACHE is not set
# CONFIG_NFS_USE_LEGACY_DNS is not set
CONFIG_NFS_USE_KERNEL_DNS=y
CONFIG_NFS_DISABLE_UDP_SUPPORT=y
# CONFIG_NFSD is not set
CONFIG_GRACE_PERIOD=y
CONFIG_LOCKD=y
CONFIG_LOCKD_V4=y
CONFIG_NFS_COMMON=y
CONFIG_SUNRPC=y
CONFIG_SUNRPC_GSS=y
CONFIG_RPCSEC_GSS_KRB5=y
CONFIG_RPCSEC_GSS_KRB5_CRYPTOSYSTEM=y
CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_AES_SHA1=y
# CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_CAMELLIA is not set
# CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_AES_SHA2 is not set
# CONFIG_SUNRPC_DEBUG is not set
# CONFIG_CEPH_FS is not set
CONFIG_CIFS=m
CONFIG_CIFS_STATS2=y
CONFIG_CIFS_ALLOW_INSECURE_LEGACY=y
# CONFIG_CIFS_UPCALL is not set
# CONFIG_CIFS_XATTR is not set
CONFIG_CIFS_DEBUG=y
# CONFIG_CIFS_DEBUG2 is not set
# CONFIG_CIFS_DEBUG_DUMP_KEYS is not set
# CONFIG_CIFS_DFS_UPCALL is not set
# CONFIG_CIFS_SWN_UPCALL is not set
# CONFIG_CIFS_FSCACHE is not set
# CONFIG_SMB_SERVER is not set
CONFIG_SMBFS_COMMON=m
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set
# CONFIG_9P_FS is not set
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="iso8859-1"
# CONFIG_NLS_CODEPAGE_437 is not set
CONFIG_NLS_CODEPAGE_737=m
CONFIG_NLS_CODEPAGE_775=m
CONFIG_NLS_CODEPAGE_850=m
CONFIG_NLS_CODEPAGE_852=m
CONFIG_NLS_CODEPAGE_855=m
CONFIG_NLS_CODEPAGE_857=m
CONFIG_NLS_CODEPAGE_860=m
CONFIG_NLS_CODEPAGE_861=m
CONFIG_NLS_CODEPAGE_862=m
CONFIG_NLS_CODEPAGE_863=m
CONFIG_NLS_CODEPAGE_864=m
CONFIG_NLS_CODEPAGE_865=m
# CONFIG_NLS_CODEPAGE_866 is not set
CONFIG_NLS_CODEPAGE_869=m
CONFIG_NLS_CODEPAGE_936=m
CONFIG_NLS_CODEPAGE_950=m
CONFIG_NLS_CODEPAGE_932=m
CONFIG_NLS_CODEPAGE_949=m
CONFIG_NLS_CODEPAGE_874=m
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_CODEPAGE_1250 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
CONFIG_NLS_ASCII=m
# CONFIG_NLS_ISO8859_1 is not set
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
CONFIG_NLS_ISO8859_5=m
CONFIG_NLS_ISO8859_6=m
CONFIG_NLS_ISO8859_7=m
CONFIG_NLS_ISO8859_9=m
CONFIG_NLS_ISO8859_13=m
CONFIG_NLS_ISO8859_14=m
CONFIG_NLS_ISO8859_15=m
# CONFIG_NLS_KOI8_R is not set
CONFIG_NLS_KOI8_U=m
CONFIG_NLS_MAC_ROMAN=m
CONFIG_NLS_MAC_CELTIC=m
CONFIG_NLS_MAC_CENTEURO=m
# CONFIG_NLS_MAC_CROATIAN is not set
# CONFIG_NLS_MAC_CYRILLIC is not set
CONFIG_NLS_MAC_GAELIC=m
CONFIG_NLS_MAC_GREEK=m
CONFIG_NLS_MAC_ICELAND=m
CONFIG_NLS_MAC_INUIT=m
CONFIG_NLS_MAC_ROMANIAN=m
# CONFIG_NLS_MAC_TURKISH is not set
# CONFIG_NLS_UTF8 is not set
# CONFIG_DLM is not set
CONFIG_UNICODE=m
# CONFIG_UNICODE_NORMALIZATION_SELFTEST is not set
CONFIG_IO_WQ=y
# end of File systems

#
# Security options
#
CONFIG_KEYS=y
# CONFIG_KEYS_REQUEST_CACHE is not set
# CONFIG_PERSISTENT_KEYRINGS is not set
CONFIG_TRUSTED_KEYS=y

#
# No trust source selected!
#
CONFIG_ENCRYPTED_KEYS=y
CONFIG_USER_DECRYPTED_DATA=y
# CONFIG_KEY_DH_OPERATIONS is not set
CONFIG_KEY_NOTIFICATIONS=y
CONFIG_SECURITY_DMESG_RESTRICT=y
CONFIG_SECURITY=y
CONFIG_SECURITYFS=y
# CONFIG_SECURITY_NETWORK is not set
# CONFIG_SECURITY_PATH is not set
CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
# CONFIG_HARDENED_USERCOPY is not set
CONFIG_FORTIFY_SOURCE=y
# CONFIG_STATIC_USERMODEHELPER is not set
# CONFIG_SECURITY_SMACK is not set
# CONFIG_SECURITY_TOMOYO is not set
# CONFIG_SECURITY_APPARMOR is not set
# CONFIG_SECURITY_YAMA is not set
# CONFIG_SECURITY_SAFESETID is not set
# CONFIG_SECURITY_LOCKDOWN_LSM is not set
# CONFIG_SECURITY_LANDLOCK is not set
CONFIG_INTEGRITY=y
# CONFIG_INTEGRITY_SIGNATURE is not set
# CONFIG_IMA is not set
# CONFIG_EVM is not set
CONFIG_DEFAULT_SECURITY_DAC=y
CONFIG_LSM="landlock,lockdown,yama,loadpin,safesetid,integrity,bpf"

#
# Kernel hardening options
#

#
# Memory initialization
#
CONFIG_INIT_STACK_NONE=y
CONFIG_INIT_ON_ALLOC_DEFAULT_ON=y
CONFIG_INIT_ON_FREE_DEFAULT_ON=y
CONFIG_CC_HAS_ZERO_CALL_USED_REGS=y
# CONFIG_ZERO_CALL_USED_REGS is not set
# end of Memory initialization

CONFIG_RANDSTRUCT_NONE=y
# end of Kernel hardening options
# end of Security options

CONFIG_CRYPTO=y

#
# Crypto core or helper
#
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_AEAD=y
CONFIG_CRYPTO_AEAD2=y
CONFIG_CRYPTO_SKCIPHER=y
CONFIG_CRYPTO_SKCIPHER2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_RNG_DEFAULT=y
CONFIG_CRYPTO_AKCIPHER2=y
CONFIG_CRYPTO_AKCIPHER=y
CONFIG_CRYPTO_KPP2=y
CONFIG_CRYPTO_KPP=y
CONFIG_CRYPTO_ACOMP2=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
# CONFIG_CRYPTO_USER is not set
CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=y
CONFIG_CRYPTO_NULL=y
CONFIG_CRYPTO_NULL2=y
CONFIG_CRYPTO_CRYPTD=y
CONFIG_CRYPTO_AUTHENC=y
# CONFIG_CRYPTO_TEST is not set
CONFIG_CRYPTO_SIMD=y
# end of Crypto core or helper

#
# Public-key cryptography
#
CONFIG_CRYPTO_RSA=y
CONFIG_CRYPTO_DH=y
CONFIG_CRYPTO_DH_RFC7919_GROUPS=y
CONFIG_CRYPTO_ECC=y
# CONFIG_CRYPTO_ECDH is not set
CONFIG_CRYPTO_ECDSA=y
# CONFIG_CRYPTO_ECRDSA is not set
# CONFIG_CRYPTO_SM2 is not set
CONFIG_CRYPTO_CURVE25519=y
# end of Public-key cryptography

#
# Block ciphers
#
CONFIG_CRYPTO_AES=y
CONFIG_CRYPTO_AES_TI=y
CONFIG_CRYPTO_ARIA=m
CONFIG_CRYPTO_BLOWFISH=y
CONFIG_CRYPTO_BLOWFISH_COMMON=y
CONFIG_CRYPTO_CAMELLIA=m
# CONFIG_CRYPTO_CAST5 is not set
# CONFIG_CRYPTO_CAST6 is not set
# CONFIG_CRYPTO_DES is not set
CONFIG_CRYPTO_FCRYPT=m
CONFIG_CRYPTO_SERPENT=y
# CONFIG_CRYPTO_SM4_GENERIC is not set
CONFIG_CRYPTO_TWOFISH=m
CONFIG_CRYPTO_TWOFISH_COMMON=m
# end of Block ciphers

#
# Length-preserving ciphers and modes
#
CONFIG_CRYPTO_ADIANTUM=m
CONFIG_CRYPTO_CHACHA20=m
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_CFB=y
CONFIG_CRYPTO_CTR=m
CONFIG_CRYPTO_CTS=y
CONFIG_CRYPTO_ECB=y
# CONFIG_CRYPTO_HCTR2 is not set
CONFIG_CRYPTO_KEYWRAP=y
CONFIG_CRYPTO_LRW=y
CONFIG_CRYPTO_OFB=m
CONFIG_CRYPTO_PCBC=y
CONFIG_CRYPTO_XTS=y
CONFIG_CRYPTO_NHPOLY1305=m
# end of Length-preserving ciphers and modes

#
# AEAD (authenticated encryption with associated data) ciphers
#
CONFIG_CRYPTO_AEGIS128=y
# CONFIG_CRYPTO_CHACHA20POLY1305 is not set
CONFIG_CRYPTO_CCM=m
CONFIG_CRYPTO_GCM=m
CONFIG_CRYPTO_SEQIV=y
CONFIG_CRYPTO_ECHAINIV=m
CONFIG_CRYPTO_ESSIV=y
# end of AEAD (authenticated encryption with associated data) ciphers

#
# Hashes, digests, and MACs
#
# CONFIG_CRYPTO_BLAKE2B is not set
CONFIG_CRYPTO_CMAC=y
CONFIG_CRYPTO_GHASH=m
CONFIG_CRYPTO_HMAC=y
CONFIG_CRYPTO_MD4=y
CONFIG_CRYPTO_MD5=m
# CONFIG_CRYPTO_MICHAEL_MIC is not set
# CONFIG_CRYPTO_POLY1305 is not set
# CONFIG_CRYPTO_RMD160 is not set
CONFIG_CRYPTO_SHA1=m
CONFIG_CRYPTO_SHA256=y
CONFIG_CRYPTO_SHA512=y
CONFIG_CRYPTO_SHA3=y
# CONFIG_CRYPTO_SM3_GENERIC is not set
# CONFIG_CRYPTO_STREEBOG is not set
CONFIG_CRYPTO_VMAC=y
CONFIG_CRYPTO_WP512=m
CONFIG_CRYPTO_XCBC=y
# CONFIG_CRYPTO_XXHASH is not set
# end of Hashes, digests, and MACs

#
# CRCs (cyclic redundancy checks)
#
# CONFIG_CRYPTO_CRC32C is not set
CONFIG_CRYPTO_CRC32=m
CONFIG_CRYPTO_CRCT10DIF=y
CONFIG_CRYPTO_CRC64_ROCKSOFT=y
# end of CRCs (cyclic redundancy checks)

#
# Compression
#
# CONFIG_CRYPTO_DEFLATE is not set
CONFIG_CRYPTO_LZO=m
CONFIG_CRYPTO_842=m
# CONFIG_CRYPTO_LZ4 is not set
# CONFIG_CRYPTO_LZ4HC is not set
# CONFIG_CRYPTO_ZSTD is not set
# end of Compression

#
# Random number generation
#
CONFIG_CRYPTO_ANSI_CPRNG=y
CONFIG_CRYPTO_DRBG_MENU=y
CONFIG_CRYPTO_DRBG_HMAC=y
CONFIG_CRYPTO_DRBG_HASH=y
# CONFIG_CRYPTO_DRBG_CTR is not set
CONFIG_CRYPTO_DRBG=y
CONFIG_CRYPTO_JITTERENTROPY=y
# end of Random number generation

#
# Userspace interface
#
# CONFIG_CRYPTO_USER_API_HASH is not set
# CONFIG_CRYPTO_USER_API_SKCIPHER is not set
# CONFIG_CRYPTO_USER_API_RNG is not set
# CONFIG_CRYPTO_USER_API_AEAD is not set
# end of Userspace interface

CONFIG_CRYPTO_HASH_INFO=y

#
# Accelerated Cryptographic Algorithms for CPU (x86)
#
CONFIG_CRYPTO_AES_NI_INTEL=m
CONFIG_CRYPTO_SERPENT_SSE2_586=y
# CONFIG_CRYPTO_TWOFISH_586 is not set
CONFIG_CRYPTO_CRC32C_INTEL=m
# CONFIG_CRYPTO_CRC32_PCLMUL is not set
# end of Accelerated Cryptographic Algorithms for CPU (x86)

# CONFIG_CRYPTO_HW is not set
CONFIG_ASYMMETRIC_KEY_TYPE=y
CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=y
CONFIG_X509_CERTIFICATE_PARSER=y
CONFIG_PKCS8_PRIVATE_KEY_PARSER=y
CONFIG_PKCS7_MESSAGE_PARSER=y
# CONFIG_PKCS7_TEST_KEY is not set
CONFIG_SIGNED_PE_FILE_VERIFICATION=y
# CONFIG_FIPS_SIGNATURE_SELFTEST is not set

#
# Certificates for signature checking
#
CONFIG_MODULE_SIG_KEY="certs/signing_key.pem"
CONFIG_MODULE_SIG_KEY_TYPE_RSA=y
# CONFIG_MODULE_SIG_KEY_TYPE_ECDSA is not set
CONFIG_SYSTEM_TRUSTED_KEYRING=y
CONFIG_SYSTEM_TRUSTED_KEYS=""
# CONFIG_SYSTEM_EXTRA_CERTIFICATE is not set
CONFIG_SECONDARY_TRUSTED_KEYRING=y
# CONFIG_SYSTEM_BLACKLIST_KEYRING is not set
# end of Certificates for signature checking

CONFIG_BINARY_PRINTF=y

#
# Library routines
#
CONFIG_LINEAR_RANGES=y
CONFIG_PACKING=y
CONFIG_BITREVERSE=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GENERIC_NET_UTILS=y
CONFIG_CORDIC=y
CONFIG_PRIME_NUMBERS=m
CONFIG_RATIONAL=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_IOMAP=y
CONFIG_ARCH_HAS_FAST_MULTIPLIER=y
CONFIG_ARCH_USE_SYM_ANNOTATIONS=y

#
# Crypto library routines
#
CONFIG_CRYPTO_LIB_UTILS=y
CONFIG_CRYPTO_LIB_AES=y
CONFIG_CRYPTO_LIB_GF128MUL=y
CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
CONFIG_CRYPTO_LIB_CHACHA_GENERIC=y
CONFIG_CRYPTO_LIB_CHACHA=y
CONFIG_CRYPTO_LIB_CURVE25519_GENERIC=y
# CONFIG_CRYPTO_LIB_CURVE25519 is not set
CONFIG_CRYPTO_LIB_POLY1305_RSIZE=1
CONFIG_CRYPTO_LIB_POLY1305_GENERIC=m
# CONFIG_CRYPTO_LIB_POLY1305 is not set
# CONFIG_CRYPTO_LIB_CHACHA20POLY1305 is not set
CONFIG_CRYPTO_LIB_SHA1=y
CONFIG_CRYPTO_LIB_SHA256=y
# end of Crypto library routines

CONFIG_CRC_CCITT=m
CONFIG_CRC16=y
CONFIG_CRC_T10DIF=y
CONFIG_CRC64_ROCKSOFT=y
CONFIG_CRC_ITU_T=y
CONFIG_CRC32=y
# CONFIG_CRC32_SELFTEST is not set
# CONFIG_CRC32_SLICEBY8 is not set
# CONFIG_CRC32_SLICEBY4 is not set
# CONFIG_CRC32_SARWATE is not set
CONFIG_CRC32_BIT=y
CONFIG_CRC64=y
CONFIG_CRC4=y
CONFIG_CRC7=m
# CONFIG_LIBCRC32C is not set
CONFIG_CRC8=y
# CONFIG_RANDOM32_SELFTEST is not set
CONFIG_842_COMPRESS=m
CONFIG_842_DECOMPRESS=m
CONFIG_ZLIB_INFLATE=y
CONFIG_LZO_COMPRESS=m
CONFIG_LZO_DECOMPRESS=m
CONFIG_LZ4_DECOMPRESS=y
CONFIG_XZ_DEC=y
CONFIG_XZ_DEC_X86=y
# CONFIG_XZ_DEC_POWERPC is not set
# CONFIG_XZ_DEC_IA64 is not set
CONFIG_XZ_DEC_ARM=y
CONFIG_XZ_DEC_ARMTHUMB=y
# CONFIG_XZ_DEC_SPARC is not set
# CONFIG_XZ_DEC_MICROLZMA is not set
CONFIG_XZ_DEC_BCJ=y
# CONFIG_XZ_DEC_TEST is not set
CONFIG_DECOMPRESS_GZIP=y
CONFIG_DECOMPRESS_LZMA=y
CONFIG_DECOMPRESS_XZ=y
CONFIG_DECOMPRESS_LZ4=y
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_INTERVAL_TREE=y
CONFIG_INTERVAL_TREE_SPAN_ITER=y
CONFIG_ASSOCIATIVE_ARRAY=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
CONFIG_HAS_DMA=y
CONFIG_DMA_OPS=y
CONFIG_NEED_SG_DMA_LENGTH=y
CONFIG_DMA_CMA=y
CONFIG_DMA_PERNUMA_CMA=y

#
# Default contiguous memory area size:
#
CONFIG_CMA_SIZE_MBYTES=0
CONFIG_CMA_SIZE_PERCENTAGE=0
# CONFIG_CMA_SIZE_SEL_MBYTES is not set
# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
# CONFIG_CMA_SIZE_SEL_MIN is not set
CONFIG_CMA_SIZE_SEL_MAX=y
CONFIG_CMA_ALIGNMENT=8
# CONFIG_DMA_API_DEBUG is not set
CONFIG_DMA_MAP_BENCHMARK=y
CONFIG_SGL_ALLOC=y
CONFIG_DQL=y
CONFIG_GLOB=y
# CONFIG_GLOB_SELFTEST is not set
CONFIG_NLATTR=y
CONFIG_CLZ_TAB=y
CONFIG_IRQ_POLL=y
CONFIG_MPILIB=y
CONFIG_LIBFDT=y
CONFIG_OID_REGISTRY=y
CONFIG_HAVE_GENERIC_VDSO=y
CONFIG_GENERIC_GETTIMEOFDAY=y
CONFIG_GENERIC_VDSO_32=y
CONFIG_GENERIC_VDSO_TIME_NS=y
CONFIG_ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION=y
CONFIG_ARCH_STACKWALK=y
CONFIG_STACKDEPOT=y
# end of Library routines

#
# Kernel hacking
#

#
# printk and dmesg options
#
CONFIG_PRINTK_TIME=y
CONFIG_PRINTK_CALLER=y
CONFIG_STACKTRACE_BUILD_ID=y
CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
CONFIG_CONSOLE_LOGLEVEL_QUIET=4
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_DYNAMIC_DEBUG is not set
CONFIG_DYNAMIC_DEBUG_CORE=y
CONFIG_SYMBOLIC_ERRNAME=y
CONFIG_DEBUG_BUGVERBOSE=y
# end of printk and dmesg options

CONFIG_DEBUG_KERNEL=y
CONFIG_DEBUG_MISC=y

#
# Compile-time checks and compiler options
#
CONFIG_DEBUG_INFO=y
CONFIG_AS_HAS_NON_CONST_LEB128=y
# CONFIG_DEBUG_INFO_NONE is not set
CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
# CONFIG_DEBUG_INFO_DWARF4 is not set
# CONFIG_DEBUG_INFO_DWARF5 is not set
CONFIG_DEBUG_INFO_REDUCED=y
CONFIG_DEBUG_INFO_COMPRESSED_NONE=y
# CONFIG_DEBUG_INFO_COMPRESSED_ZLIB is not set
# CONFIG_DEBUG_INFO_SPLIT is not set
CONFIG_PAHOLE_HAS_SPLIT_BTF=y
CONFIG_PAHOLE_HAS_LANG_EXCLUDE=y
CONFIG_GDB_SCRIPTS=y
CONFIG_FRAME_WARN=8192
CONFIG_STRIP_ASM_SYMS=y
# CONFIG_READABLE_ASM is not set
CONFIG_HEADERS_INSTALL=y
CONFIG_DEBUG_SECTION_MISMATCH=y
CONFIG_SECTION_MISMATCH_WARN_ONLY=y
CONFIG_FRAME_POINTER=y
# CONFIG_VMLINUX_MAP is not set
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
# end of Compile-time checks and compiler options

#
# Generic Kernel Debugging Instruments
#
CONFIG_MAGIC_SYSRQ=y
CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1
# CONFIG_MAGIC_SYSRQ_SERIAL is not set
CONFIG_DEBUG_FS=y
# CONFIG_DEBUG_FS_ALLOW_ALL is not set
# CONFIG_DEBUG_FS_DISALLOW_MOUNT is not set
CONFIG_DEBUG_FS_ALLOW_NONE=y
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y
CONFIG_UBSAN=y
# CONFIG_UBSAN_TRAP is not set
CONFIG_CC_HAS_UBSAN_BOUNDS=y
CONFIG_UBSAN_BOUNDS=y
CONFIG_UBSAN_ONLY_BOUNDS=y
CONFIG_UBSAN_SHIFT=y
# CONFIG_UBSAN_DIV_ZERO is not set
CONFIG_UBSAN_UNREACHABLE=y
# CONFIG_UBSAN_BOOL is not set
# CONFIG_UBSAN_ENUM is not set
# CONFIG_UBSAN_ALIGNMENT is not set
CONFIG_UBSAN_SANITIZE_ALL=y
# CONFIG_TEST_UBSAN is not set
CONFIG_HAVE_KCSAN_COMPILER=y
# end of Generic Kernel Debugging Instruments

#
# Networking Debugging
#
# CONFIG_NET_DEV_REFCNT_TRACKER is not set
# CONFIG_NET_NS_REFCNT_TRACKER is not set
# CONFIG_DEBUG_NET is not set
# end of Networking Debugging

#
# Memory Debugging
#
CONFIG_PAGE_EXTENSION=y
# CONFIG_DEBUG_PAGEALLOC is not set
CONFIG_SLUB_DEBUG=y
# CONFIG_SLUB_DEBUG_ON is not set
CONFIG_PAGE_OWNER=y
# CONFIG_PAGE_POISONING is not set
# CONFIG_DEBUG_PAGE_REF is not set
# CONFIG_DEBUG_RODATA_TEST is not set
CONFIG_ARCH_HAS_DEBUG_WX=y
# CONFIG_DEBUG_WX is not set
CONFIG_GENERIC_PTDUMP=y
CONFIG_PTDUMP_CORE=y
CONFIG_PTDUMP_DEBUGFS=y
CONFIG_HAVE_DEBUG_KMEMLEAK=y
# CONFIG_DEBUG_KMEMLEAK is not set
CONFIG_DEBUG_OBJECTS=y
# CONFIG_DEBUG_OBJECTS_SELFTEST is not set
# CONFIG_DEBUG_OBJECTS_FREE is not set
CONFIG_DEBUG_OBJECTS_TIMERS=y
CONFIG_DEBUG_OBJECTS_WORK=y
# CONFIG_DEBUG_OBJECTS_RCU_HEAD is not set
CONFIG_DEBUG_OBJECTS_PERCPU_COUNTER=y
CONFIG_DEBUG_OBJECTS_ENABLE_DEFAULT=1
# CONFIG_SHRINKER_DEBUG is not set
# CONFIG_DEBUG_STACK_USAGE is not set
CONFIG_SCHED_STACK_END_CHECK=y
CONFIG_ARCH_HAS_DEBUG_VM_PGTABLE=y
CONFIG_DEBUG_VM_IRQSOFF=y
CONFIG_DEBUG_VM=y
CONFIG_DEBUG_VM_MAPLE_TREE=y
CONFIG_DEBUG_VM_RB=y
CONFIG_DEBUG_VM_PGFLAGS=y
# CONFIG_DEBUG_VM_PGTABLE is not set
CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y
# CONFIG_DEBUG_VIRTUAL is not set
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_DEBUG_KMAP_LOCAL=y
CONFIG_ARCH_SUPPORTS_KMAP_LOCAL_FORCE_MAP=y
CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP=y
CONFIG_DEBUG_HIGHMEM=y
CONFIG_HAVE_DEBUG_STACKOVERFLOW=y
# CONFIG_DEBUG_STACKOVERFLOW is not set
CONFIG_CC_HAS_KASAN_GENERIC=y
CONFIG_CC_HAS_WORKING_NOSANITIZE_ADDRESS=y
CONFIG_HAVE_ARCH_KFENCE=y
# CONFIG_KFENCE is not set
# end of Memory Debugging

CONFIG_DEBUG_SHIRQ=y

#
# Debug Oops, Lockups and Hangs
#
CONFIG_PANIC_ON_OOPS=y
CONFIG_PANIC_ON_OOPS_VALUE=1
CONFIG_PANIC_TIMEOUT=0
CONFIG_LOCKUP_DETECTOR=y
CONFIG_SOFTLOCKUP_DETECTOR=y
# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
# CONFIG_HARDLOCKUP_DETECTOR is not set
CONFIG_DETECT_HUNG_TASK=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=480
# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
CONFIG_WQ_WATCHDOG=y
# CONFIG_TEST_LOCKUP is not set
# end of Debug Oops, Lockups and Hangs

#
# Scheduler Debugging
#
# CONFIG_SCHED_DEBUG is not set
CONFIG_SCHED_INFO=y
CONFIG_SCHEDSTATS=y
# end of Scheduler Debugging

# CONFIG_DEBUG_TIMEKEEPING is not set

#
# Lock Debugging (spinlocks, mutexes, etc...)
#
CONFIG_LOCK_DEBUGGING_SUPPORT=y
CONFIG_PROVE_LOCKING=y
# CONFIG_PROVE_RAW_LOCK_NESTING is not set
# CONFIG_LOCK_STAT is not set
CONFIG_DEBUG_RT_MUTEXES=y
CONFIG_DEBUG_SPINLOCK=y
CONFIG_DEBUG_MUTEXES=y
CONFIG_DEBUG_WW_MUTEX_SLOWPATH=y
CONFIG_DEBUG_RWSEMS=y
CONFIG_DEBUG_LOCK_ALLOC=y
CONFIG_LOCKDEP=y
CONFIG_LOCKDEP_BITS=15
CONFIG_LOCKDEP_CHAINS_BITS=16
CONFIG_LOCKDEP_STACK_TRACE_BITS=19
CONFIG_LOCKDEP_STACK_TRACE_HASH_BITS=14
CONFIG_LOCKDEP_CIRCULAR_QUEUE_BITS=12
# CONFIG_DEBUG_LOCKDEP is not set
CONFIG_DEBUG_ATOMIC_SLEEP=y
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
CONFIG_LOCK_TORTURE_TEST=m
# CONFIG_WW_MUTEX_SELFTEST is not set
# CONFIG_SCF_TORTURE_TEST is not set
# end of Lock Debugging (spinlocks, mutexes, etc...)

CONFIG_TRACE_IRQFLAGS=y
CONFIG_TRACE_IRQFLAGS_NMI=y
# CONFIG_NMI_CHECK_CPU is not set
CONFIG_DEBUG_IRQFLAGS=y
CONFIG_STACKTRACE=y
# CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set
# CONFIG_DEBUG_KOBJECT is not set
# CONFIG_DEBUG_KOBJECT_RELEASE is not set

#
# Debug kernel data structures
#
CONFIG_DEBUG_LIST=y
CONFIG_DEBUG_PLIST=y
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS is not set
# CONFIG_BUG_ON_DATA_CORRUPTION is not set
CONFIG_DEBUG_MAPLE_TREE=y
# end of Debug kernel data structures

# CONFIG_DEBUG_CREDENTIALS is not set

#
# RCU Debugging
#
CONFIG_PROVE_RCU=y
# CONFIG_PROVE_RCU_LIST is not set
CONFIG_TORTURE_TEST=m
CONFIG_RCU_SCALE_TEST=m
CONFIG_RCU_TORTURE_TEST=m
CONFIG_RCU_REF_SCALE_TEST=m
# CONFIG_RCU_TRACE is not set
CONFIG_RCU_EQS_DEBUG=y
# end of RCU Debugging

CONFIG_DEBUG_WQ_FORCE_RR_CPU=y
CONFIG_LATENCYTOP=y
# CONFIG_DEBUG_CGROUP_REF is not set
CONFIG_USER_STACKTRACE_SUPPORT=y
CONFIG_NOP_TRACER=y
CONFIG_HAVE_RETHOOK=y
CONFIG_RETHOOK=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS=y
CONFIG_HAVE_DYNAMIC_FTRACE_NO_PATCHABLE=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_HAVE_BUILDTIME_MCOUNT_SORT=y
CONFIG_TRACER_MAX_TRACE=y
CONFIG_TRACE_CLOCK=y
CONFIG_RING_BUFFER=y
CONFIG_EVENT_TRACING=y
CONFIG_CONTEXT_SWITCH_TRACER=y
CONFIG_RING_BUFFER_ALLOW_SWAP=y
CONFIG_PREEMPTIRQ_TRACEPOINTS=y
CONFIG_TRACING=y
CONFIG_GENERIC_TRACER=y
CONFIG_TRACING_SUPPORT=y
CONFIG_FTRACE=y
CONFIG_BOOTTIME_TRACING=y
# CONFIG_FUNCTION_TRACER is not set
# CONFIG_STACK_TRACER is not set
CONFIG_IRQSOFF_TRACER=y
CONFIG_SCHED_TRACER=y
CONFIG_HWLAT_TRACER=y
CONFIG_OSNOISE_TRACER=y
# CONFIG_TIMERLAT_TRACER is not set
# CONFIG_MMIOTRACE is not set
# CONFIG_FTRACE_SYSCALLS is not set
CONFIG_TRACER_SNAPSHOT=y
CONFIG_TRACER_SNAPSHOT_PER_CPU_SWAP=y
CONFIG_BRANCH_PROFILE_NONE=y
# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
# CONFIG_KPROBE_EVENTS is not set
# CONFIG_UPROBE_EVENTS is not set
CONFIG_DYNAMIC_EVENTS=y
CONFIG_SYNTH_EVENTS=y
# CONFIG_HIST_TRIGGERS is not set
CONFIG_TRACE_EVENT_INJECT=y
# CONFIG_TRACEPOINT_BENCHMARK is not set
CONFIG_RING_BUFFER_BENCHMARK=m
# CONFIG_TRACE_EVAL_MAP_FILE is not set
# CONFIG_FTRACE_STARTUP_TEST is not set
# CONFIG_RING_BUFFER_STARTUP_TEST is not set
# CONFIG_RING_BUFFER_VALIDATE_TIME_DELTAS is not set
# CONFIG_PREEMPTIRQ_DELAY_TEST is not set
# CONFIG_SYNTH_EVENT_GEN_TEST is not set
CONFIG_RV=y
# CONFIG_RV_MON_WWNR is not set
# CONFIG_RV_REACTORS is not set
# CONFIG_PROVIDE_OHCI1394_DMA_INIT is not set
CONFIG_SAMPLES=y
# CONFIG_SAMPLE_AUXDISPLAY is not set
CONFIG_SAMPLE_TRACE_EVENTS=m
# CONFIG_SAMPLE_TRACE_CUSTOM_EVENTS is not set
CONFIG_SAMPLE_TRACE_PRINTK=m
CONFIG_SAMPLE_TRACE_ARRAY=m
# CONFIG_SAMPLE_KOBJECT is not set
CONFIG_SAMPLE_KPROBES=m
# CONFIG_SAMPLE_KRETPROBES is not set
CONFIG_SAMPLE_HW_BREAKPOINT=m
CONFIG_SAMPLE_KFIFO=m
# CONFIG_SAMPLE_RPMSG_CLIENT is not set
CONFIG_SAMPLE_CONFIGFS=m
CONFIG_SAMPLE_HIDRAW=y
# CONFIG_SAMPLE_LANDLOCK is not set
# CONFIG_SAMPLE_PIDFD is not set
CONFIG_SAMPLE_TIMER=y
# CONFIG_SAMPLE_UHID is not set
CONFIG_SAMPLE_VFIO_MDEV_MTTY=m
CONFIG_SAMPLE_VFIO_MDEV_MDPY=m
CONFIG_SAMPLE_VFIO_MDEV_MDPY_FB=m
CONFIG_SAMPLE_VFIO_MDEV_MBOCHS=m
CONFIG_SAMPLE_ANDROID_BINDERFS=y
CONFIG_SAMPLE_VFS=y
CONFIG_SAMPLE_WATCHDOG=y
# CONFIG_SAMPLE_WATCH_QUEUE is not set
CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y
CONFIG_STRICT_DEVMEM=y
# CONFIG_IO_STRICT_DEVMEM is not set

#
# x86 Debugging
#
CONFIG_EARLY_PRINTK_USB=y
CONFIG_X86_VERBOSE_BOOTUP=y
CONFIG_EARLY_PRINTK=y
CONFIG_EARLY_PRINTK_DBGP=y
CONFIG_EARLY_PRINTK_USB_XDBC=y
# CONFIG_DEBUG_TLBFLUSH is not set
CONFIG_HAVE_MMIOTRACE_SUPPORT=y
# CONFIG_X86_DECODER_SELFTEST is not set
# CONFIG_IO_DELAY_0X80 is not set
# CONFIG_IO_DELAY_0XED is not set
CONFIG_IO_DELAY_UDELAY=y
# CONFIG_IO_DELAY_NONE is not set
# CONFIG_DEBUG_BOOT_PARAMS is not set
# CONFIG_CPA_DEBUG is not set
CONFIG_DEBUG_ENTRY=y
# CONFIG_X86_DEBUG_FPU is not set
# CONFIG_PUNIT_ATOM_DEBUG is not set
CONFIG_UNWINDER_FRAME_POINTER=y
# end of x86 Debugging

#
# Kernel Testing and Coverage
#
# CONFIG_KUNIT is not set
# CONFIG_NOTIFIER_ERROR_INJECTION is not set
CONFIG_FUNCTION_ERROR_INJECTION=y
# CONFIG_FAULT_INJECTION is not set
CONFIG_CC_HAS_SANCOV_TRACE_PC=y
# CONFIG_RUNTIME_TESTING_MENU is not set
CONFIG_ARCH_USE_MEMTEST=y
CONFIG_MEMTEST=y
# end of Kernel Testing and Coverage

#
# Rust hacking
#
# end of Rust hacking
# end of Kernel hacking

[-- Attachment #3: job-script --]
[-- Type: text/plain, Size: 4848 bytes --]

#!/bin/sh

export_top_env()
{
	export suite='boot'
	export testcase='boot'
	export category='functional'
	export timeout='10m'
	export job_origin='boot.yaml'
	export queue_cmdline_keys='branch
commit'
	export queue='bisect'
	export testbox='vm-snb'
	export tbox_group='vm-snb'
	export branch='linux-review/cem-kernel-org/shmem-make-shmem_inode_acct_block-return-error/20230403-165022'
	export commit='e060b9e86fd92d5e87f5b0c447e4bc610a3d3bbe'
	export kconfig='i386-randconfig-a015-20230403'
	export nr_vm=300
	export submit_id='642b0d7f32affd17767e7cc3'
	export job_file='/lkp/jobs/scheduled/vm-meta-29/boot-1-openwrt-i386-generic-20190428.cgz-e060b9e86fd92d5e87f5b0c447e4bc610a3d3bbe-20230404-6006-1bjee3v-0.yaml'
	export id='7b51df8fa470770d8662c470567a7a42b432b582'
	export queuer_version='/zday/lkp'
	export model='qemu-system-x86_64 -enable-kvm -cpu SandyBridge'
	export nr_cpu=2
	export memory='16G'
	export need_kconfig=\{\"KVM_GUEST\"\=\>\"y\"\}
	export ssh_base_port=23032
	export kernel_cmdline_hw='vmalloc=256M initramfs_async=0 page_owner=on'
	export rootfs='openwrt-i386-generic-20190428.cgz'
	export compiler='gcc-11'
	export enqueue_time='2023-04-04 01:31:44 +0800'
	export _id='642b0d7f32affd17767e7cc3'
	export _rt='/result/boot/1/vm-snb/openwrt-i386-generic-20190428.cgz/i386-randconfig-a015-20230403/gcc-11/e060b9e86fd92d5e87f5b0c447e4bc610a3d3bbe'
	export user='lkp'
	export LKP_SERVER='internal-lkp-server'
	export result_root='/result/boot/1/vm-snb/openwrt-i386-generic-20190428.cgz/i386-randconfig-a015-20230403/gcc-11/e060b9e86fd92d5e87f5b0c447e4bc610a3d3bbe/0'
	export scheduler_version='/lkp/lkp/.src-20230403-092309'
	export arch='i386'
	export max_uptime=600
	export initrd='/osimage/openwrt/openwrt-i386-generic-20190428.cgz'
	export bootloader_append='root=/dev/ram0
RESULT_ROOT=/result/boot/1/vm-snb/openwrt-i386-generic-20190428.cgz/i386-randconfig-a015-20230403/gcc-11/e060b9e86fd92d5e87f5b0c447e4bc610a3d3bbe/0
BOOT_IMAGE=/pkg/linux/i386-randconfig-a015-20230403/gcc-11/e060b9e86fd92d5e87f5b0c447e4bc610a3d3bbe/vmlinuz-6.3.0-rc5-00005-ge060b9e86fd9
branch=linux-review/cem-kernel-org/shmem-make-shmem_inode_acct_block-return-error/20230403-165022
job=/lkp/jobs/scheduled/vm-meta-29/boot-1-openwrt-i386-generic-20190428.cgz-e060b9e86fd92d5e87f5b0c447e4bc610a3d3bbe-20230404-6006-1bjee3v-0.yaml
user=lkp
ARCH=i386
kconfig=i386-randconfig-a015-20230403
commit=e060b9e86fd92d5e87f5b0c447e4bc610a3d3bbe
initcall_debug
mem=4G
nmi_watchdog=0
vmalloc=256M initramfs_async=0 page_owner=on
max_uptime=600
LKP_SERVER=internal-lkp-server
selinux=0
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
net.ifnames=0
printk.devkmsg=on
panic=-1
softlockup_panic=1
nmi_watchdog=panic
oops=panic
load_ramdisk=2
prompt_ramdisk=0
drbd.minor_count=8
systemd.log_level=err
ignore_loglevel
console=tty0
earlyprintk=ttyS0,115200
console=ttyS0,115200
vga=normal
rw'
	export modules_initrd='/pkg/linux/i386-randconfig-a015-20230403/gcc-11/e060b9e86fd92d5e87f5b0c447e4bc610a3d3bbe/modules.cgz'
	export lkp_initrd='/osimage/user/lkp/lkp-i386.cgz'
	export site='inn'
	export LKP_CGI_PORT=80
	export LKP_CIFS_PORT=139
	export schedule_notify_address=
	export meta_host='vm-meta-29'
	export kernel='/pkg/linux/i386-randconfig-a015-20230403/gcc-11/e060b9e86fd92d5e87f5b0c447e4bc610a3d3bbe/vmlinuz-6.3.0-rc5-00005-ge060b9e86fd9'
	export dequeue_time='2023-04-04 02:20:36 +0800'
	export job_initrd='/lkp/jobs/scheduled/vm-meta-29/boot-1-openwrt-i386-generic-20190428.cgz-e060b9e86fd92d5e87f5b0c447e4bc610a3d3bbe-20230404-6006-1bjee3v-0.cgz'

	[ -n "$LKP_SRC" ] ||
	export LKP_SRC=/lkp/${user:-lkp}/src
}

run_job()
{
	echo $$ > $TMP/run-job.pid

	. $LKP_SRC/lib/http.sh
	. $LKP_SRC/lib/job.sh
	. $LKP_SRC/lib/env.sh

	export_top_env

	run_monitor $LKP_SRC/monitors/one-shot/wrapper boot-slabinfo
	run_monitor $LKP_SRC/monitors/one-shot/wrapper boot-meminfo
	run_monitor $LKP_SRC/monitors/one-shot/wrapper memmap
	run_monitor $LKP_SRC/monitors/no-stdout/wrapper boot-time
	run_monitor $LKP_SRC/monitors/wrapper kmsg
	run_monitor $LKP_SRC/monitors/wrapper heartbeat
	run_monitor $LKP_SRC/monitors/wrapper meminfo
	run_monitor $LKP_SRC/monitors/wrapper oom-killer
	run_monitor $LKP_SRC/monitors/plain/watchdog

	run_test $LKP_SRC/tests/wrapper sleep 1
}

extract_stats()
{
	export stats_part_begin=
	export stats_part_end=

	$LKP_SRC/stats/wrapper boot-slabinfo
	$LKP_SRC/stats/wrapper boot-meminfo
	$LKP_SRC/stats/wrapper memmap
	$LKP_SRC/stats/wrapper boot-memory
	$LKP_SRC/stats/wrapper boot-time
	$LKP_SRC/stats/wrapper kernel-size
	$LKP_SRC/stats/wrapper kmsg
	$LKP_SRC/stats/wrapper sleep
	$LKP_SRC/stats/wrapper meminfo

	$LKP_SRC/stats/wrapper time sleep.time
	$LKP_SRC/stats/wrapper dmesg
	$LKP_SRC/stats/wrapper kmsg
	$LKP_SRC/stats/wrapper last_state
	$LKP_SRC/stats/wrapper stderr
	$LKP_SRC/stats/wrapper time
}

"$@"

[-- Attachment #4: dmesg.xz --]
[-- Type: application/x-xz, Size: 24452 bytes --]

Re: [PATCH 5/6] shmem: quota support

[Jan Kara]

On Mon 03-04-23 10:47:58, cem@kernel.org wrote:
> From: Lukas Czerner <lczerner@redhat.com>
> 
> Now the basic infra-structure is in place, enable quota support for tmpfs.
> 
> Signed-off-by: Lukas Czerner <lczerner@redhat.com>
> Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>

Some comments below...

> diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
> index cf38381bdb4c1..3e7e18726feb5 100644
> --- a/include/linux/shmem_fs.h
> +++ b/include/linux/shmem_fs.h
> @@ -26,6 +26,9 @@ struct shmem_inode_info {
>  	atomic_t		stop_eviction;	/* hold when working on inode */
>  	struct timespec64	i_crtime;	/* file creation time */
>  	unsigned int		fsflags;	/* flags for FS_IOC_[SG]ETFLAGS */
> +#ifdef CONFIG_TMPFS_QUOTA
> +	struct dquot		*i_dquot[MAXQUOTAS];
> +#endif
>  	struct inode		vfs_inode;
>  };
>  
> @@ -171,4 +174,10 @@ extern int shmem_mfill_atomic_pte(struct mm_struct *dst_mm, pmd_t *dst_pmd,
>  #define SHMEM_QUOTA_MAX_SPC_LIMIT 0x7fffffffffffffffLL /* 2^63-1 */
>  #define SHMEM_QUOTA_MAX_INO_LIMIT 0x7fffffffffffffffLL
>  
> +#ifdef CONFIG_TMPFS_QUOTA
> +#define SHMEM_MAXQUOTAS 2

You have this definition already in mm/shmem_quota.c.

> +extern const struct dquot_operations shmem_quota_operations;
> +extern struct quota_format_type shmem_quota_format;
> +#endif /* CONFIG_TMPFS_QUOTA */
> +
>  #endif
> diff --git a/mm/shmem.c b/mm/shmem.c
> index 88e13930fc013..d7529c883eaf5 100644
> --- a/mm/shmem.c
> +++ b/mm/shmem.c
> @@ -79,6 +79,7 @@ static struct vfsmount *shm_mnt;
>  #include <linux/userfaultfd_k.h>
>  #include <linux/rmap.h>
>  #include <linux/uuid.h>
> +#include <linux/quotaops.h>
>  
>  #include <linux/uaccess.h>
>  
> @@ -116,10 +117,12 @@ struct shmem_options {
>  	bool full_inums;
>  	int huge;
>  	int seen;
> +	unsigned short quota_types;
>  #define SHMEM_SEEN_BLOCKS 1
>  #define SHMEM_SEEN_INODES 2
>  #define SHMEM_SEEN_HUGE 4
>  #define SHMEM_SEEN_INUMS 8
> +#define SHMEM_SEEN_QUOTA 16
>  };
>  
>  #ifdef CONFIG_TMPFS
> @@ -211,8 +214,11 @@ static inline int shmem_inode_acct_block(struct inode *inode, long pages)
>  		if (percpu_counter_compare(&sbinfo->used_blocks,
>  					   sbinfo->max_blocks - pages) > 0)
>  			goto unacct;
> +		if ((err = dquot_alloc_block_nodirty(inode, pages)) != 0)
> +			goto unacct;

We generally try to avoid assignments in conditions so I'd do:

		err = dquot_alloc_block_nodirty(inode, pages);
		if (err)
			goto unacct;

>  		percpu_counter_add(&sbinfo->used_blocks, pages);
> -	}
> +	} else if ((err = dquot_alloc_block_nodirty(inode, pages)) != 0)
> +		goto unacct;
>  

The same here...

> @@ -1133,6 +1179,15 @@ static int shmem_setattr(struct mnt_idmap *idmap,
>  		}
>  	}
>  
> +	/* Transfer quota accounting */
> +	if (i_uid_needs_update(idmap, attr, inode) ||
> +	    i_gid_needs_update(idmap, attr,inode)) {
> +		error = dquot_transfer(idmap, inode, attr);
> +
> +		if (error)
> +			return error;
> +	}
> +

I think you also need to add:

        if (is_quota_modification(idmap, inode, attr)) {
                error = dquot_initialize(inode);
                if (error)
                        return error;
        }

to shmem_setattr().

>  	setattr_copy(idmap, inode, attr);
>  	if (attr->ia_valid & ATTR_MODE)
>  		error = posix_acl_chmod(idmap, dentry, inode->i_mode);
> @@ -1178,7 +1233,9 @@ static void shmem_evict_inode(struct inode *inode)
>  	simple_xattrs_free(&info->xattrs);
>  	WARN_ON(inode->i_blocks);
>  	shmem_free_inode(inode->i_sb);
> +	dquot_free_inode(inode);
>  	clear_inode(inode);
> +	dquot_drop(inode);
>  }
>  
>  static int shmem_find_swap_entries(struct address_space *mapping,
> @@ -1975,7 +2032,6 @@ static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index,
>  
>  	spin_lock_irq(&info->lock);
>  	info->alloced += folio_nr_pages(folio);
> -	inode->i_blocks += (blkcnt_t)BLOCKS_PER_PAGE << folio_order(folio);
>  	shmem_recalc_inode(inode);
>  	spin_unlock_irq(&info->lock);
>  	alloced = true;
> @@ -2346,9 +2402,10 @@ static void shmem_set_inode_flags(struct inode *inode, unsigned int fsflags)
>  #define shmem_initxattrs NULL
>  #endif
>  
> -static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block *sb,
> -				     struct inode *dir, umode_t mode, dev_t dev,
> -				     unsigned long flags)
> +static struct inode *shmem_get_inode_noquota(struct mnt_idmap *idmap,
> +					     struct super_block *sb,
> +					     struct inode *dir, umode_t mode,
> +					     dev_t dev, unsigned long flags)
>  {
>  	struct inode *inode;
>  	struct shmem_inode_info *info;
> @@ -2422,6 +2479,37 @@ static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block
>  	return inode;
>  }
>  
> +static struct inode *shmem_get_inode(struct mnt_idmap *idmap,
> +				     struct super_block *sb, struct inode *dir,
> +				     umode_t mode, dev_t dev, unsigned long flags)
> +{
> +	int err;
> +	struct inode *inode;
> +
> +	inode = shmem_get_inode_noquota(idmap, sb, dir, mode, dev, flags);
> +	if (IS_ERR(inode))
> +		return inode;
> +
> +	err = dquot_initialize(inode);
> +	if (err)
> +		goto errout;
> +
> +	err = dquot_alloc_inode(inode);
> +	if (err) {
> +		dquot_drop(inode);
> +		goto errout;
> +	}
> +	return inode;
> +
> +errout:
> +	inode->i_flags |= S_NOQUOTA;
> +	iput(inode);
> +	shmem_free_inode(sb);

I think shmem_free_inode() is superfluous here. iput() above should already
unaccount the inode...

> +	if (err)

How could err be possibly unset here?

> +		return ERR_PTR(err);
> +	return NULL;
> +}
> +

> @@ -3582,6 +3679,18 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
>  		ctx->full_inums = true;
>  		ctx->seen |= SHMEM_SEEN_INUMS;
>  		break;
> +	case Opt_quota:
> +		ctx->seen |= SHMEM_SEEN_QUOTA;
> +		ctx->quota_types |= (QTYPE_MASK_USR | QTYPE_MASK_GRP);
> +		break;
> +	case Opt_usrquota:
> +		ctx->seen |= SHMEM_SEEN_QUOTA;
> +		ctx->quota_types |= QTYPE_MASK_USR;
> +		break;
> +	case Opt_grpquota:
> +		ctx->seen |= SHMEM_SEEN_QUOTA;
> +		ctx->quota_types |= QTYPE_MASK_GRP;
> +		break;
>  	}
>  	return 0;
>  
> @@ -3681,6 +3790,12 @@ static int shmem_reconfigure(struct fs_context *fc)
>  		goto out;
>  	}
>  
> +	if (ctx->seen & SHMEM_SEEN_QUOTA &&
> +	    !sb_any_quota_loaded(fc->root->d_sb)) {
> +		err = "Cannot enable quota on remount";
> +		goto out;
> +	}
> +
>  	if (ctx->seen & SHMEM_SEEN_HUGE)
>  		sbinfo->huge = ctx->huge;
>  	if (ctx->seen & SHMEM_SEEN_INUMS)
> @@ -3763,6 +3878,9 @@ static void shmem_put_super(struct super_block *sb)
>  {
>  	struct shmem_sb_info *sbinfo = SHMEM_SB(sb);
>  
> +#ifdef CONFIG_TMPFS_QUOTA
> +	shmem_disable_quotas(sb);
> +#endif
>  	free_percpu(sbinfo->ino_batch);
>  	percpu_counter_destroy(&sbinfo->used_blocks);
>  	mpol_put(sbinfo->mpol);
> @@ -3841,6 +3959,17 @@ static int shmem_fill_super(struct super_block *sb, struct fs_context *fc)
>  #endif
>  	uuid_gen(&sb->s_uuid);
>  
> +#ifdef CONFIG_TMPFS_QUOTA
> +	if (ctx->seen & SHMEM_SEEN_QUOTA) {
> +		sb->dq_op = &shmem_quota_operations;
> +		sb->s_qcop = &dquot_quotactl_sysfile_ops;
> +		sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;

s_quota_types should rather be copied from ctx, shouldn't it? Or why is
s_quota_types inconsistent with ctx->quota_types?

								Honza
-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR

Re: [PATCH 5/6] shmem: quota support

[Carlos Maiolino]

On Wed, Apr 05, 2023 at 01:42:45PM +0200, Jan Kara wrote:
> On Mon 03-04-23 10:47:58, cem@kernel.org wrote:
> > From: Lukas Czerner <lczerner@redhat.com>
> >
> > Now the basic infra-structure is in place, enable quota support for tmpfs.
> >
> > Signed-off-by: Lukas Czerner <lczerner@redhat.com>
> > Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
> 
> Some comments below...
> 
> > diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
> > index cf38381bdb4c1..3e7e18726feb5 100644
> > --- a/include/linux/shmem_fs.h
> > +++ b/include/linux/shmem_fs.h
> > @@ -26,6 +26,9 @@ struct shmem_inode_info {
> >  	atomic_t		stop_eviction;	/* hold when working on inode */
> >  	struct timespec64	i_crtime;	/* file creation time */
> >  	unsigned int		fsflags;	/* flags for FS_IOC_[SG]ETFLAGS */
> > +#ifdef CONFIG_TMPFS_QUOTA
> > +	struct dquot		*i_dquot[MAXQUOTAS];
> > +#endif
> >  	struct inode		vfs_inode;
> >  };
> >
> > @@ -171,4 +174,10 @@ extern int shmem_mfill_atomic_pte(struct mm_struct *dst_mm, pmd_t *dst_pmd,
> >  #define SHMEM_QUOTA_MAX_SPC_LIMIT 0x7fffffffffffffffLL /* 2^63-1 */
> >  #define SHMEM_QUOTA_MAX_INO_LIMIT 0x7fffffffffffffffLL
> >
> > +#ifdef CONFIG_TMPFS_QUOTA
> > +#define SHMEM_MAXQUOTAS 2
> 
> You have this definition already in mm/shmem_quota.c.
> 

True, that define is not visible from here though, I'll simply remove the one
from mm/shmem_quota.c and keep it here in shmem_fs.h.


> > +extern const struct dquot_operations shmem_quota_operations;
> > +extern struct quota_format_type shmem_quota_format;
> > +#endif /* CONFIG_TMPFS_QUOTA */
> > +
> >  #endif
> > diff --git a/mm/shmem.c b/mm/shmem.c
> > index 88e13930fc013..d7529c883eaf5 100644
> > --- a/mm/shmem.c
> > +++ b/mm/shmem.c
> > @@ -79,6 +79,7 @@ static struct vfsmount *shm_mnt;
> >  #include <linux/userfaultfd_k.h>
> >  #include <linux/rmap.h>
> >  #include <linux/uuid.h>
> > +#include <linux/quotaops.h>
> >
> >  #include <linux/uaccess.h>
> >
> > @@ -116,10 +117,12 @@ struct shmem_options {
> >  	bool full_inums;
> >  	int huge;
> >  	int seen;
> > +	unsigned short quota_types;
> >  #define SHMEM_SEEN_BLOCKS 1
> >  #define SHMEM_SEEN_INODES 2
> >  #define SHMEM_SEEN_HUGE 4
> >  #define SHMEM_SEEN_INUMS 8
> > +#define SHMEM_SEEN_QUOTA 16
> >  };
> >
> >  #ifdef CONFIG_TMPFS
> > @@ -211,8 +214,11 @@ static inline int shmem_inode_acct_block(struct inode *inode, long pages)
> >  		if (percpu_counter_compare(&sbinfo->used_blocks,
> >  					   sbinfo->max_blocks - pages) > 0)
> >  			goto unacct;
> > +		if ((err = dquot_alloc_block_nodirty(inode, pages)) != 0)
> > +			goto unacct;
> 
> We generally try to avoid assignments in conditions so I'd do:
> 
> 		err = dquot_alloc_block_nodirty(inode, pages);
> 		if (err)
> 			goto unacct;

Fair enough. Will update it for the new version
> 
> >  		percpu_counter_add(&sbinfo->used_blocks, pages);
> > -	}
> > +	} else if ((err = dquot_alloc_block_nodirty(inode, pages)) != 0)
> > +		goto unacct;
> >
> 
> The same here...
> 
> > @@ -1133,6 +1179,15 @@ static int shmem_setattr(struct mnt_idmap *idmap,
> >  		}
> >  	}
> >
> > +	/* Transfer quota accounting */
> > +	if (i_uid_needs_update(idmap, attr, inode) ||
> > +	    i_gid_needs_update(idmap, attr,inode)) {
> > +		error = dquot_transfer(idmap, inode, attr);
> > +
> > +		if (error)
> > +			return error;
> > +	}
> > +
> 
> I think you also need to add:
> 
>         if (is_quota_modification(idmap, inode, attr)) {
>                 error = dquot_initialize(inode);
>                 if (error)
>                         return error;
>         }
> 
> to shmem_setattr().

Ok.

> 
> >  	setattr_copy(idmap, inode, attr);
> >  	if (attr->ia_valid & ATTR_MODE)
> >  		error = posix_acl_chmod(idmap, dentry, inode->i_mode);
> > @@ -1178,7 +1233,9 @@ static void shmem_evict_inode(struct inode *inode)
> >  	simple_xattrs_free(&info->xattrs);
> >  	WARN_ON(inode->i_blocks);
> >  	shmem_free_inode(inode->i_sb);
> > +	dquot_free_inode(inode);
> >  	clear_inode(inode);
> > +	dquot_drop(inode);
> >  }
> >
> >  static int shmem_find_swap_entries(struct address_space *mapping,
> > @@ -1975,7 +2032,6 @@ static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index,
> >
> >  	spin_lock_irq(&info->lock);
> >  	info->alloced += folio_nr_pages(folio);
> > -	inode->i_blocks += (blkcnt_t)BLOCKS_PER_PAGE << folio_order(folio);
> >  	shmem_recalc_inode(inode);
> >  	spin_unlock_irq(&info->lock);
> >  	alloced = true;
> > @@ -2346,9 +2402,10 @@ static void shmem_set_inode_flags(struct inode *inode, unsigned int fsflags)
> >  #define shmem_initxattrs NULL
> >  #endif
> >
> > -static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block *sb,
> > -				     struct inode *dir, umode_t mode, dev_t dev,
> > -				     unsigned long flags)
> > +static struct inode *shmem_get_inode_noquota(struct mnt_idmap *idmap,
> > +					     struct super_block *sb,
> > +					     struct inode *dir, umode_t mode,
> > +					     dev_t dev, unsigned long flags)
> >  {
> >  	struct inode *inode;
> >  	struct shmem_inode_info *info;
> > @@ -2422,6 +2479,37 @@ static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block
> >  	return inode;
> >  }
> >
> > +static struct inode *shmem_get_inode(struct mnt_idmap *idmap,
> > +				     struct super_block *sb, struct inode *dir,
> > +				     umode_t mode, dev_t dev, unsigned long flags)
> > +{
> > +	int err;
> > +	struct inode *inode;
> > +
> > +	inode = shmem_get_inode_noquota(idmap, sb, dir, mode, dev, flags);
> > +	if (IS_ERR(inode))
> > +		return inode;
> > +
> > +	err = dquot_initialize(inode);
> > +	if (err)
> > +		goto errout;
> > +
> > +	err = dquot_alloc_inode(inode);
> > +	if (err) {
> > +		dquot_drop(inode);
> > +		goto errout;
> > +	}
> > +	return inode;
> > +
> > +errout:
> > +	inode->i_flags |= S_NOQUOTA;
> > +	iput(inode);
> > +	shmem_free_inode(sb);
> 
> I think shmem_free_inode() is superfluous here. iput() above should already
> unaccount the inode...

Right, I see it can be called from .evict_inode during iput_final(). Thanks for
spotting it.

> 
> > +	if (err)
> 
> How could err be possibly unset here?

I don't think it can, I'll update it.

> 
> > +		return ERR_PTR(err);
> > +	return NULL;
> > +}
> > +
> 
> > @@ -3582,6 +3679,18 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
> >  		ctx->full_inums = true;
> >  		ctx->seen |= SHMEM_SEEN_INUMS;
> >  		break;
> > +	case Opt_quota:
> > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > +		ctx->quota_types |= (QTYPE_MASK_USR | QTYPE_MASK_GRP);
> > +		break;
> > +	case Opt_usrquota:
> > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > +		ctx->quota_types |= QTYPE_MASK_USR;
> > +		break;
> > +	case Opt_grpquota:
> > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > +		ctx->quota_types |= QTYPE_MASK_GRP;
> > +		break;
> >  	}
> >  	return 0;
> >
> > @@ -3681,6 +3790,12 @@ static int shmem_reconfigure(struct fs_context *fc)
> >  		goto out;
> >  	}
> >
> > +	if (ctx->seen & SHMEM_SEEN_QUOTA &&
> > +	    !sb_any_quota_loaded(fc->root->d_sb)) {
> > +		err = "Cannot enable quota on remount";
> > +		goto out;
> > +	}
> > +
> >  	if (ctx->seen & SHMEM_SEEN_HUGE)
> >  		sbinfo->huge = ctx->huge;
> >  	if (ctx->seen & SHMEM_SEEN_INUMS)
> > @@ -3763,6 +3878,9 @@ static void shmem_put_super(struct super_block *sb)
> >  {
> >  	struct shmem_sb_info *sbinfo = SHMEM_SB(sb);
> >
> > +#ifdef CONFIG_TMPFS_QUOTA
> > +	shmem_disable_quotas(sb);
> > +#endif
> >  	free_percpu(sbinfo->ino_batch);
> >  	percpu_counter_destroy(&sbinfo->used_blocks);
> >  	mpol_put(sbinfo->mpol);
> > @@ -3841,6 +3959,17 @@ static int shmem_fill_super(struct super_block *sb, struct fs_context *fc)
> >  #endif
> >  	uuid_gen(&sb->s_uuid);
> >
> > +#ifdef CONFIG_TMPFS_QUOTA
> > +	if (ctx->seen & SHMEM_SEEN_QUOTA) {
> > +		sb->dq_op = &shmem_quota_operations;
> > +		sb->s_qcop = &dquot_quotactl_sysfile_ops;
> > +		sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
> 
> s_quota_types should rather be copied from ctx, shouldn't it? Or why is
> s_quota_types inconsistent with ctx->quota_types?

I believe s_qupta_types here is a bitmask of supported quota types, while
ctx->quota_types refers to the mount options being passed from the user.

So we should enable in sb->s_quota_types which quota types the filesystem
supports, not which were enabled by the user.

Cheers.

-- 
Carlos Maiolino

Re: [PATCH 5/6] shmem: quota support

[Jan Kara]

On Tue 11-04-23 11:37:26, Carlos Maiolino wrote:
> On Wed, Apr 05, 2023 at 01:42:45PM +0200, Jan Kara wrote:
> > > @@ -3763,6 +3878,9 @@ static void shmem_put_super(struct super_block *sb)
> > >  {
> > >  	struct shmem_sb_info *sbinfo = SHMEM_SB(sb);
> > >
> > > +#ifdef CONFIG_TMPFS_QUOTA
> > > +	shmem_disable_quotas(sb);
> > > +#endif
> > >  	free_percpu(sbinfo->ino_batch);
> > >  	percpu_counter_destroy(&sbinfo->used_blocks);
> > >  	mpol_put(sbinfo->mpol);
> > > @@ -3841,6 +3959,17 @@ static int shmem_fill_super(struct super_block *sb, struct fs_context *fc)
> > >  #endif
> > >  	uuid_gen(&sb->s_uuid);
> > >
> > > +#ifdef CONFIG_TMPFS_QUOTA
> > > +	if (ctx->seen & SHMEM_SEEN_QUOTA) {
> > > +		sb->dq_op = &shmem_quota_operations;
> > > +		sb->s_qcop = &dquot_quotactl_sysfile_ops;
> > > +		sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
> > 
> > s_quota_types should rather be copied from ctx, shouldn't it? Or why is
> > s_quota_types inconsistent with ctx->quota_types?
> 
> I believe s_qupta_types here is a bitmask of supported quota types, while
> ctx->quota_types refers to the mount options being passed from the user.
> 
> So we should enable in sb->s_quota_types which quota types the filesystem
> supports, not which were enabled by the user.

Oh, right.

								Honza
-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR

[PATCH 6/6] Add default quota limit mount options

[cem]

From: Lukas Czerner <lczerner@redhat.com>

Allow system administrator to set default global quota limits at tmpfs
mount time.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
---
 Documentation/filesystems/tmpfs.rst | 34 ++++++++++----
 include/linux/shmem_fs.h            |  8 ++++
 mm/shmem.c                          | 69 +++++++++++++++++++++++++++++
 mm/shmem_quota.c                    |  9 ++++
 4 files changed, 111 insertions(+), 9 deletions(-)

diff --git a/Documentation/filesystems/tmpfs.rst b/Documentation/filesystems/tmpfs.rst
index 3f8d89bb7e1a5..ec442a3ef90a0 100644
--- a/Documentation/filesystems/tmpfs.rst
+++ b/Documentation/filesystems/tmpfs.rst
@@ -88,15 +88,31 @@ that instance in a system with many CPUs making intensive use of it.
 
 tmpfs also supports quota with the following mount options
 
-========  =============================================================
-quota     User and group quota accounting and enforcement is enabled on
-          the mount. Tmpfs is using hidden system quota files that are
-          initialized on mount.
-usrquota  User quota accounting and enforcement is enabled on the
-          mount.
-grpquota  Group quota accounting and enforcement is enabled on the
-          mount.
-========  =============================================================
+======================== =================================================
+quota                    User and group quota accounting and enforcement
+                         is enabled on the mount. Tmpfs is using hidden
+                         system quota files that are initialized on mount.
+usrquota                 User quota accounting and enforcement is enabled
+                         on the mount.
+grpquota                 Group quota accounting and enforcement is enabled
+                         on the mount.
+usrquota_block_hardlimit Set global user quota block hard limit.
+usrquota_inode_hardlimit Set global user quota inode hard limit.
+grpquota_block_hardlimit Set global group quota block hard limit.
+grpquota_inode_hardlimit Set global group quota inode hard limit.
+======================== =================================================
+
+None of the quota related mount options can be set or changed on remount.
+
+Quota limit parameters accept a suffix k, m or g for kilo, mega and giga
+and can't be changed on remount. Default global quota limits are taking
+effect for any and all user/group/project except root the first time the
+quota entry for user/group/project id is being accessed - typically the
+first time an inode with a particular id ownership is being created after
+the mount. In other words, instead of the limits being initialized to zero,
+they are initialized with the particular value provided with these mount
+options. The limits can be changed for any user/group id at any time as it
+normally can.
 
 tmpfs has a mount option to set the NUMA memory allocation policy for
 all files in that instance (if CONFIG_NUMA is enabled) - which can be
diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index 3e7e18726feb5..5527bd27a429d 100644
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -37,6 +37,13 @@ struct shmem_inode_info {
 	(FS_IMMUTABLE_FL | FS_APPEND_FL | FS_NODUMP_FL | FS_NOATIME_FL)
 #define SHMEM_FL_INHERITED		(FS_NODUMP_FL | FS_NOATIME_FL)
 
+struct shmem_quota_limits {
+	qsize_t usrquota_bhardlimit; /* Default user quota block hard limit */
+	qsize_t usrquota_ihardlimit; /* Default user quota inode hard limit */
+	qsize_t grpquota_bhardlimit; /* Default group quota block hard limit */
+	qsize_t grpquota_ihardlimit; /* Default group quota inode hard limit */
+};
+
 struct shmem_sb_info {
 	unsigned long max_blocks;   /* How many blocks are allowed */
 	struct percpu_counter used_blocks;  /* How many are allocated */
@@ -54,6 +61,7 @@ struct shmem_sb_info {
 	spinlock_t shrinklist_lock;   /* Protects shrinklist */
 	struct list_head shrinklist;  /* List of shinkable inodes */
 	unsigned long shrinklist_len; /* Length of shrinklist */
+	struct shmem_quota_limits qlimits; /* Default quota limits */
 };
 
 static inline struct shmem_inode_info *SHMEM_I(struct inode *inode)
diff --git a/mm/shmem.c b/mm/shmem.c
index d7529c883eaf5..80270213fd012 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -118,6 +118,7 @@ struct shmem_options {
 	int huge;
 	int seen;
 	unsigned short quota_types;
+	struct shmem_quota_limits qlimits;
 #define SHMEM_SEEN_BLOCKS 1
 #define SHMEM_SEEN_INODES 2
 #define SHMEM_SEEN_HUGE 4
@@ -3570,6 +3571,10 @@ enum shmem_param {
 	Opt_quota,
 	Opt_usrquota,
 	Opt_grpquota,
+	Opt_usrquota_block_hardlimit,
+	Opt_usrquota_inode_hardlimit,
+	Opt_grpquota_block_hardlimit,
+	Opt_grpquota_inode_hardlimit,
 };
 
 static const struct constant_table shmem_param_enums_huge[] = {
@@ -3595,6 +3600,10 @@ const struct fs_parameter_spec shmem_fs_parameters[] = {
 	fsparam_flag  ("quota",		Opt_quota),
 	fsparam_flag  ("usrquota",	Opt_usrquota),
 	fsparam_flag  ("grpquota",	Opt_grpquota),
+	fsparam_string("usrquota_block_hardlimit", Opt_usrquota_block_hardlimit),
+	fsparam_string("usrquota_inode_hardlimit", Opt_usrquota_inode_hardlimit),
+	fsparam_string("grpquota_block_hardlimit", Opt_grpquota_block_hardlimit),
+	fsparam_string("grpquota_inode_hardlimit", Opt_grpquota_inode_hardlimit),
 #endif
 	{}
 };
@@ -3691,6 +3700,50 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
 		ctx->seen |= SHMEM_SEEN_QUOTA;
 		ctx->quota_types |= QTYPE_MASK_GRP;
 		break;
+	case Opt_usrquota_block_hardlimit:
+		size = memparse(param->string, &rest);
+		if (*rest || !size)
+			goto bad_value;
+		if (size > SHMEM_QUOTA_MAX_SPC_LIMIT)
+			return invalfc(fc,
+				       "User quota block hardlimit too large.");
+		ctx->qlimits.usrquota_bhardlimit = size;
+		ctx->seen |= SHMEM_SEEN_QUOTA;
+		ctx->quota_types |= QTYPE_MASK_USR;
+		break;
+	case Opt_grpquota_block_hardlimit:
+		size = memparse(param->string, &rest);
+		if (*rest || !size)
+			goto bad_value;
+		if (size > SHMEM_QUOTA_MAX_SPC_LIMIT)
+			return invalfc(fc,
+				       "Group quota block hardlimit too large.");
+		ctx->qlimits.grpquota_bhardlimit = size;
+		ctx->seen |= SHMEM_SEEN_QUOTA;
+		ctx->quota_types |= QTYPE_MASK_GRP;
+		break;
+	case Opt_usrquota_inode_hardlimit:
+		size = memparse(param->string, &rest);
+		if (*rest || !size)
+			goto bad_value;
+		if (size > SHMEM_QUOTA_MAX_INO_LIMIT)
+			return invalfc(fc,
+				       "User quota inode hardlimit too large.");
+		ctx->qlimits.usrquota_ihardlimit = size;
+		ctx->seen |= SHMEM_SEEN_QUOTA;
+		ctx->quota_types |= QTYPE_MASK_USR;
+		break;
+	case Opt_grpquota_inode_hardlimit:
+		size = memparse(param->string, &rest);
+		if (*rest || !size)
+			goto bad_value;
+		if (size > SHMEM_QUOTA_MAX_INO_LIMIT)
+			return invalfc(fc,
+				       "Group quota inode hardlimit too large.");
+		ctx->qlimits.grpquota_ihardlimit = size;
+		ctx->seen |= SHMEM_SEEN_QUOTA;
+		ctx->quota_types |= QTYPE_MASK_GRP;
+		break;
 	}
 	return 0;
 
@@ -3796,6 +3849,18 @@ static int shmem_reconfigure(struct fs_context *fc)
 		goto out;
 	}
 
+#ifdef CONFIG_TMPFS_QUOTA
+#define CHANGED_LIMIT(name)						\
+	(ctx->qlimits.name## hardlimit &&				\
+	(ctx->qlimits.name## hardlimit != sbinfo->qlimits.name## hardlimit))
+
+	if (CHANGED_LIMIT(usrquota_b) || CHANGED_LIMIT(usrquota_i) ||
+	    CHANGED_LIMIT(grpquota_b) || CHANGED_LIMIT(grpquota_i)) {
+		err = "Cannot change global quota limit on remount";
+		goto out;
+	}
+#endif /* CONFIG_TMPFS_QUOTA */
+
 	if (ctx->seen & SHMEM_SEEN_HUGE)
 		sbinfo->huge = ctx->huge;
 	if (ctx->seen & SHMEM_SEEN_INUMS)
@@ -3965,6 +4030,10 @@ static int shmem_fill_super(struct super_block *sb, struct fs_context *fc)
 		sb->s_qcop = &dquot_quotactl_sysfile_ops;
 		sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
 
+		/* Copy the default limits from ctx into sbinfo */
+		memcpy(&sbinfo->qlimits, &ctx->qlimits,
+		       sizeof(struct shmem_quota_limits));
+
 		if (shmem_enable_quotas(sb, ctx->quota_types))
 			goto failed;
 	}
diff --git a/mm/shmem_quota.c b/mm/shmem_quota.c
index c415043a71e67..77ba7c3494c70 100644
--- a/mm/shmem_quota.c
+++ b/mm/shmem_quota.c
@@ -168,6 +168,7 @@ static int shmem_acquire_dquot(struct dquot *dquot)
 {
 	struct mem_dqinfo *info = sb_dqinfo(dquot->dq_sb, dquot->dq_id.type);
 	struct rb_node **n = &((struct rb_root *)info->dqi_priv)->rb_node;
+	struct shmem_sb_info *sbinfo = dquot->dq_sb->s_fs_info;
 	struct rb_node *parent = NULL, *new_node = NULL;
 	struct quota_id *new_entry, *entry;
 	qid_t id = from_kqid(&init_user_ns, dquot->dq_id);
@@ -197,6 +198,14 @@ static int shmem_acquire_dquot(struct dquot *dquot)
 	}
 
 	new_entry->id = id;
+	if (dquot->dq_id.type == USRQUOTA) {
+		new_entry->bhardlimit = sbinfo->qlimits.usrquota_bhardlimit;
+		new_entry->ihardlimit = sbinfo->qlimits.usrquota_ihardlimit;
+	} else if (dquot->dq_id.type == GRPQUOTA) {
+		new_entry->bhardlimit = sbinfo->qlimits.grpquota_bhardlimit;
+		new_entry->ihardlimit = sbinfo->qlimits.grpquota_ihardlimit;
+	}
+
 	new_node = &new_entry->node;
 	rb_link_node(new_node, parent, n);
 	rb_insert_color(new_node, (struct rb_root *)info->dqi_priv);
-- 
2.30.2

Re: [PATCH 0/6] shmem: Add user and group quota support for tmpfs

[Christian Brauner]

On Mon, Apr 03, 2023 at 10:47:53AM +0200, cem@kernel.org wrote:
> From: Carlos Maiolino <cmaiolino@redhat.com>
> 
> Hi folks. this work has been done originally by Lukas, but he left the company,
> so I'm taking over his work from where he left it of. This series is virtually
> done, and he had updated it with comments from the last version, but, I'm

I've commented on the last version:

https://lore.kernel.org/linux-fsdevel/20221129112133.rrpoywlwdw45k3qa@wittgenstein

trying to point out that tmpfs can be mounted in user namespaces. Which
means that the quota uids and gids need to take the idmapping of the
user namespace in which the tmpfs instances is mounted in into account;
not the one on the host.

See the link above for some details. Before we can merge this it would
be very good if we could get tests that verify tmpfs being mounted
inside a userns with quotas enabled because I don't think this is
covered yet by xfstests. Or you punt on it for now and restricted quotas
to tmpfs instances mounted on the host.

> initially posting it as a RFC because it's been a while since he posted the
> last version.
> Most of what I did here was rebase his last work on top of current Linus's tree.
> 
> Honza, there is one patch from you in this series, which I believe you had it
> suggested to Lukas on a previous version.
> 
> The original cover-letter follows...
> 
> people have been asking for quota support in tmpfs many times in the past
> mostly to avoid one malicious user, or misbehaving user/program to consume
> all of the system memory. This has been partially solved with the size
> mount option, but some problems still prevail.
> 
> One of the problems is the fact that /dev/shm is still generally unprotected
> with this and another is administration overhead of managing multiple tmpfs
> mounts and lack of more fine grained control.
> 
> Quota support can solve all these problems in a somewhat standard way
> people are already familiar with from regular file systems. It can give us
> more fine grained control over how much memory user/groups can consume.
> Additionally it can also control number of inodes and with special quota
> mount options introduced with a second patch we can set global limits
> allowing us to replace the size mount option with quota entirely.
> 
> Currently the standard userspace quota tools (quota, xfs_quota) are only
> using quotactl ioctl which is expecting a block device. I patched quota [1]
> and xfs_quota [2] to use quotactl_fd in case we want to run the tools on
> mount point directory to work nicely with tmpfs.
> 
> The implementation was tested on patched version of xfstests [3].
> 
> 
> Jan Kara (1):
>   quota: Check presence of quota operation structures instead of
>     ->quota_read and ->quota_write callbacks
> 
> Lukas Czerner (5):
>   shmem: make shmem_inode_acct_block() return error
>   shmem: make shmem_get_inode() return ERR_PTR instead of NULL
>   shmem: prepare shmem quota infrastructure
>   shmem: quota support
>   Add default quota limit mount options
> 
>  Documentation/filesystems/tmpfs.rst |  28 ++
>  fs/Kconfig                          |  12 +
>  fs/quota/dquot.c                    |   2 +-
>  include/linux/shmem_fs.h            |  25 ++
>  include/uapi/linux/quota.h          |   1 +
>  mm/Makefile                         |   2 +-
>  mm/shmem.c                          | 452 +++++++++++++++++++++-------
>  mm/shmem_quota.c                    | 327 ++++++++++++++++++++
>  8 files changed, 740 insertions(+), 109 deletions(-)
>  create mode 100644 mm/shmem_quota.c
> 
> -- 
> 2.30.2
> 

Re: [PATCH 0/6] shmem: Add user and group quota support for tmpfs

[Carlos Maiolino]

Hi Christian.

On Wed, Apr 05, 2023 at 10:52:44AM +0200, Christian Brauner wrote:
> On Mon, Apr 03, 2023 at 10:47:53AM +0200, cem@kernel.org wrote:
> > From: Carlos Maiolino <cmaiolino@redhat.com>
> >
> > Hi folks. this work has been done originally by Lukas, but he left the company,
> > so I'm taking over his work from where he left it of. This series is virtually
> > done, and he had updated it with comments from the last version, but, I'm
> 
> I've commented on the last version:
> 
> https://lore.kernel.org/linux-fsdevel/20221129112133.rrpoywlwdw45k3qa@wittgenstein
> 
> trying to point out that tmpfs can be mounted in user namespaces. Which
> means that the quota uids and gids need to take the idmapping of the
> user namespace in which the tmpfs instances is mounted in into account;
> not the one on the host.
> 
> See the link above for some details. Before we can merge this it would
> be very good if we could get tests that verify tmpfs being mounted
> inside a userns with quotas enabled because I don't think this is
> covered yet by xfstests. Or you punt on it for now and restricted quotas
> to tmpfs instances mounted on the host.
> 

Thanks for the link, I've read it before, and this is by now a limitation I'd
like to keep in this series. I can extend it to be namespace aware later on, but
the current goal of this series is to be able tmpfs mounts on the host to limit
the amount of memory consumed by users. Being namespace aware is something I
plan to work later. Because as you said, it needs more testing coverage, which
will only delay the main goal of this series, which again, is to avoid users to
consume all memory in the host itself.

> > initially posting it as a RFC because it's been a while since he posted the
> > last version.
> > Most of what I did here was rebase his last work on top of current Linus's tree.
> >
> > Honza, there is one patch from you in this series, which I believe you had it
> > suggested to Lukas on a previous version.
> >
> > The original cover-letter follows...
> >
> > people have been asking for quota support in tmpfs many times in the past
> > mostly to avoid one malicious user, or misbehaving user/program to consume
> > all of the system memory. This has been partially solved with the size
> > mount option, but some problems still prevail.
> >
> > One of the problems is the fact that /dev/shm is still generally unprotected
> > with this and another is administration overhead of managing multiple tmpfs
> > mounts and lack of more fine grained control.
> >
> > Quota support can solve all these problems in a somewhat standard way
> > people are already familiar with from regular file systems. It can give us
> > more fine grained control over how much memory user/groups can consume.
> > Additionally it can also control number of inodes and with special quota
> > mount options introduced with a second patch we can set global limits
> > allowing us to replace the size mount option with quota entirely.
> >
> > Currently the standard userspace quota tools (quota, xfs_quota) are only
> > using quotactl ioctl which is expecting a block device. I patched quota [1]
> > and xfs_quota [2] to use quotactl_fd in case we want to run the tools on
> > mount point directory to work nicely with tmpfs.
> >
> > The implementation was tested on patched version of xfstests [3].
> >
> >
> > Jan Kara (1):
> >   quota: Check presence of quota operation structures instead of
> >     ->quota_read and ->quota_write callbacks
> >
> > Lukas Czerner (5):
> >   shmem: make shmem_inode_acct_block() return error
> >   shmem: make shmem_get_inode() return ERR_PTR instead of NULL
> >   shmem: prepare shmem quota infrastructure
> >   shmem: quota support
> >   Add default quota limit mount options
> >
> >  Documentation/filesystems/tmpfs.rst |  28 ++
> >  fs/Kconfig                          |  12 +
> >  fs/quota/dquot.c                    |   2 +-
> >  include/linux/shmem_fs.h            |  25 ++
> >  include/uapi/linux/quota.h          |   1 +
> >  mm/Makefile                         |   2 +-
> >  mm/shmem.c                          | 452 +++++++++++++++++++++-------
> >  mm/shmem_quota.c                    | 327 ++++++++++++++++++++
> >  8 files changed, 740 insertions(+), 109 deletions(-)
> >  create mode 100644 mm/shmem_quota.c
> >
> > --
> > 2.30.2
> >

-- 
Carlos Maiolino

Re: [PATCH 0/6] shmem: Add user and group quota support for tmpfs

[Christian Brauner]

On Wed, Apr 05, 2023 at 12:44:27PM +0200, Carlos Maiolino wrote:
> Hi Christian.
> 
> On Wed, Apr 05, 2023 at 10:52:44AM +0200, Christian Brauner wrote:
> > On Mon, Apr 03, 2023 at 10:47:53AM +0200, cem@kernel.org wrote:
> > > From: Carlos Maiolino <cmaiolino@redhat.com>
> > >
> > > Hi folks. this work has been done originally by Lukas, but he left the company,
> > > so I'm taking over his work from where he left it of. This series is virtually
> > > done, and he had updated it with comments from the last version, but, I'm
> > 
> > I've commented on the last version:
> > 
> > https://lore.kernel.org/linux-fsdevel/20221129112133.rrpoywlwdw45k3qa@wittgenstein
> > 
> > trying to point out that tmpfs can be mounted in user namespaces. Which
> > means that the quota uids and gids need to take the idmapping of the
> > user namespace in which the tmpfs instances is mounted in into account;
> > not the one on the host.
> > 
> > See the link above for some details. Before we can merge this it would
> > be very good if we could get tests that verify tmpfs being mounted
> > inside a userns with quotas enabled because I don't think this is
> > covered yet by xfstests. Or you punt on it for now and restricted quotas
> > to tmpfs instances mounted on the host.
> > 
> 
> Thanks for the link, I've read it before, and this is by now a limitation I'd
> like to keep in this series. I can extend it to be namespace aware later on, but
> the current goal of this series is to be able tmpfs mounts on the host to limit
> the amount of memory consumed by users. Being namespace aware is something I

This is fine with me. But please point the restriction out in the
documentation and in the commit message. This is especially important
because the check is hidden in the bowls of dquot_load_quota_sb().

Ideally we'd probably check for fc->user_ns == &init_user_ns directly
when parsing the quota mount options instead of waiting until
fill_super.

Re: [PATCH 0/6] shmem: Add user and group quota support for tmpfs

[Carlos Maiolino]

On Wed, Apr 05, 2023 at 03:11:22PM +0200, Christian Brauner wrote:
> On Wed, Apr 05, 2023 at 12:44:27PM +0200, Carlos Maiolino wrote:
> > Hi Christian.
> >
> > On Wed, Apr 05, 2023 at 10:52:44AM +0200, Christian Brauner wrote:
> > > On Mon, Apr 03, 2023 at 10:47:53AM +0200, cem@kernel.org wrote:
> > > > From: Carlos Maiolino <cmaiolino@redhat.com>
> > > >
> > > > Hi folks. this work has been done originally by Lukas, but he left the company,
> > > > so I'm taking over his work from where he left it of. This series is virtually
> > > > done, and he had updated it with comments from the last version, but, I'm
> > >
> > > I've commented on the last version:
> > >
> > > https://lore.kernel.org/linux-fsdevel/20221129112133.rrpoywlwdw45k3qa@wittgenstein
> > >
> > > trying to point out that tmpfs can be mounted in user namespaces. Which
> > > means that the quota uids and gids need to take the idmapping of the
> > > user namespace in which the tmpfs instances is mounted in into account;
> > > not the one on the host.
> > >
> > > See the link above for some details. Before we can merge this it would
> > > be very good if we could get tests that verify tmpfs being mounted
> > > inside a userns with quotas enabled because I don't think this is
> > > covered yet by xfstests. Or you punt on it for now and restricted quotas
> > > to tmpfs instances mounted on the host.
> > >
> >
> > Thanks for the link, I've read it before, and this is by now a limitation I'd
> > like to keep in this series. I can extend it to be namespace aware later on, but
> > the current goal of this series is to be able tmpfs mounts on the host to limit
> > the amount of memory consumed by users. Being namespace aware is something I
> 
> This is fine with me. But please point the restriction out in the
> documentation and in the commit message. This is especially important
> because the check is hidden in the bowls of dquot_load_quota_sb().

Sounds reasonable, I'll work on the comments I received and re-send this series
next week if nothing urgent comes up.

> 
> Ideally we'd probably check for fc->user_ns == &init_user_ns directly
> when parsing the quota mount options instead of waiting until
> fill_super.

-- 
Carlos Maiolino

[PATCH V4 0/6] shmem: Add user and group quota support for tmpfs

[cem]

From: Carlos Maiolino <cem@kernel.org>

Hello folks.

This is the final version of the quota support from tmpfs, with all the issues
addressed, and now including RwB tags on all patches, and should be ready for
merge. Details are within each patch, and the original cover-letter below.

Hi folks. this work has been done originally by Lukas, but he left the company,
so I'm taking over his work from where he left it of. This series is virtually
done, and he had updated it with comments from the last version, but, I'm
initially posting it as a RFC because it's been a while since he posted the
last version.
Most of what I did here was rebase his last work on top of current Linus's tree.

Honza, there is one patch from you in this series, which I believe you had it
suggested to Lukas on a previous version.

The original cover-letter follows...

people have been asking for quota support in tmpfs many times in the past
mostly to avoid one malicious user, or misbehaving user/program to consume
all of the system memory. This has been partially solved with the size
mount option, but some problems still prevail.

One of the problems is the fact that /dev/shm is still generally unprotected
with this and another is administration overhead of managing multiple tmpfs
mounts and lack of more fine grained control.

Quota support can solve all these problems in a somewhat standard way
people are already familiar with from regular file systems. It can give us
more fine grained control over how much memory user/groups can consume.
Additionally it can also control number of inodes and with special quota
mount options introduced with a second patch we can set global limits
allowing us to replace the size mount option with quota entirely.

Currently the standard userspace quota tools (quota, xfs_quota) are only
using quotactl ioctl which is expecting a block device. I patched quota [1]
and xfs_quota [2] to use quotactl_fd in case we want to run the tools on
mount point directory to work nicely with tmpfs.

The implementation was tested on patched version of xfstests [3].

[1] https://github.com/lczerner/quota/tree/quotactl_fd_support
[2] https://github.com/lczerner/xfsprogs/tree/quotactl_fd_support
[3] https://github.com/lczerner/xfstests/tree/tmpfs_quota_support


Jan Kara (1):
  quota: Check presence of quota operation structures instead of
    ->quota_read and ->quota_write callbacks

Lukas Czerner (5):
  shmem: make shmem_inode_acct_block() return error
  shmem: make shmem_get_inode() return ERR_PTR instead of NULL
  shmem: prepare shmem quota infrastructure
  shmem: quota support
  Add default quota limit mount options

 Documentation/filesystems/tmpfs.rst |  31 ++
 fs/Kconfig                          |  12 +
 fs/quota/dquot.c                    |   2 +-
 include/linux/shmem_fs.h            |  28 ++
 include/uapi/linux/quota.h          |   1 +
 mm/Makefile                         |   2 +-
 mm/shmem.c                          | 465 +++++++++++++++++++++-------
 mm/shmem_quota.c                    | 350 +++++++++++++++++++++
 8 files changed, 783 insertions(+), 108 deletions(-)
 create mode 100644 mm/shmem_quota.c

Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
-- 
2.30.2

[PATCH 5/6] shmem: quota support

[cem]

From: Lukas Czerner <lczerner@redhat.com>

Now the basic infra-structure is in place, enable quota support for tmpfs.

This offers user and group quotas to tmpfs (project quotas will be added
later). Also, as other filesystems, the tmpfs quota is not supported
within user namespaces yet, so idmapping is not translated.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
---
 Documentation/filesystems/tmpfs.rst |  15 +++
 include/linux/shmem_fs.h            |   8 ++
 mm/shmem.c                          | 180 ++++++++++++++++++++++++++--
 3 files changed, 195 insertions(+), 8 deletions(-)

diff --git a/Documentation/filesystems/tmpfs.rst b/Documentation/filesystems/tmpfs.rst
index 0408c245785e3..595e607274afb 100644
--- a/Documentation/filesystems/tmpfs.rst
+++ b/Documentation/filesystems/tmpfs.rst
@@ -86,6 +86,21 @@ use up all the memory on the machine; but enhances the scalability of
 that instance in a system with many CPUs making intensive use of it.
 
 
+tmpfs also supports quota with the following mount options
+
+========  =============================================================
+quota     User and group quota accounting and enforcement is enabled on
+          the mount. Tmpfs is using hidden system quota files that are
+          initialized on mount.
+usrquota  User quota accounting and enforcement is enabled on the
+          mount.
+grpquota  Group quota accounting and enforcement is enabled on the
+          mount.
+========  =============================================================
+
+Note that tmpfs quotas do not support user namespaces so no uid/gid
+translation is done if quotas are enabled inside user namespaces.
+
 tmpfs has a mount option to set the NUMA memory allocation policy for
 all files in that instance (if CONFIG_NUMA is enabled) - which can be
 adjusted on the fly via 'mount -o remount ...'
diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index 92db49ebd5452..b8e421e349868 100644
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -30,6 +30,9 @@ struct shmem_inode_info {
 	atomic_t		stop_eviction;	/* hold when working on inode */
 	struct timespec64	i_crtime;	/* file creation time */
 	unsigned int		fsflags;	/* flags for FS_IOC_[SG]ETFLAGS */
+#ifdef CONFIG_TMPFS_QUOTA
+	struct dquot		*i_dquot[MAXQUOTAS];
+#endif
 	struct inode		vfs_inode;
 };
 
@@ -175,4 +178,9 @@ extern int shmem_mfill_atomic_pte(struct mm_struct *dst_mm, pmd_t *dst_pmd,
 #define SHMEM_QUOTA_MAX_SPC_LIMIT 0x7fffffffffffffffLL /* 2^63-1 */
 #define SHMEM_QUOTA_MAX_INO_LIMIT 0x7fffffffffffffffLL
 
+#ifdef CONFIG_TMPFS_QUOTA
+extern const struct dquot_operations shmem_quota_operations;
+extern struct quota_format_type shmem_quota_format;
+#endif /* CONFIG_TMPFS_QUOTA */
+
 #endif
diff --git a/mm/shmem.c b/mm/shmem.c
index 09a44f1b2c954..623d258af39f8 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -79,6 +79,7 @@ static struct vfsmount *shm_mnt;
 #include <linux/userfaultfd_k.h>
 #include <linux/rmap.h>
 #include <linux/uuid.h>
+#include <linux/quotaops.h>
 
 #include <linux/uaccess.h>
 
@@ -116,10 +117,12 @@ struct shmem_options {
 	bool full_inums;
 	int huge;
 	int seen;
+	unsigned short quota_types;
 #define SHMEM_SEEN_BLOCKS 1
 #define SHMEM_SEEN_INODES 2
 #define SHMEM_SEEN_HUGE 4
 #define SHMEM_SEEN_INUMS 8
+#define SHMEM_SEEN_QUOTA 16
 };
 
 #ifdef CONFIG_TMPFS
@@ -211,7 +214,16 @@ static inline int shmem_inode_acct_block(struct inode *inode, long pages)
 		if (percpu_counter_compare(&sbinfo->used_blocks,
 					   sbinfo->max_blocks - pages) > 0)
 			goto unacct;
+
+		err = dquot_alloc_block_nodirty(inode, pages);
+		if (err)
+			goto unacct;
+
 		percpu_counter_add(&sbinfo->used_blocks, pages);
+	} else {
+		err = dquot_alloc_block_nodirty(inode, pages);
+		if (err)
+			goto unacct;
 	}
 
 	return 0;
@@ -226,6 +238,8 @@ static inline void shmem_inode_unacct_blocks(struct inode *inode, long pages)
 	struct shmem_inode_info *info = SHMEM_I(inode);
 	struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb);
 
+	dquot_free_block_nodirty(inode, pages);
+
 	if (sbinfo->max_blocks)
 		percpu_counter_sub(&sbinfo->used_blocks, pages);
 	shmem_unacct_blocks(info->flags, pages);
@@ -254,6 +268,47 @@ bool vma_is_shmem(struct vm_area_struct *vma)
 static LIST_HEAD(shmem_swaplist);
 static DEFINE_MUTEX(shmem_swaplist_mutex);
 
+#ifdef CONFIG_TMPFS_QUOTA
+
+static int shmem_enable_quotas(struct super_block *sb,
+			       unsigned short quota_types)
+{
+	int type, err = 0;
+
+	sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NOLIST_DIRTY;
+	for (type = 0; type < SHMEM_MAXQUOTAS; type++) {
+		if (!(quota_types & (1 << type)))
+			continue;
+		err = dquot_load_quota_sb(sb, type, QFMT_SHMEM,
+					  DQUOT_USAGE_ENABLED |
+					  DQUOT_LIMITS_ENABLED);
+		if (err)
+			goto out_err;
+	}
+	return 0;
+
+out_err:
+	pr_warn("tmpfs: failed to enable quota tracking (type=%d, err=%d)\n",
+		type, err);
+	for (type--; type >= 0; type--)
+		dquot_quota_off(sb, type);
+	return err;
+}
+
+static void shmem_disable_quotas(struct super_block *sb)
+{
+	int type;
+
+	for (type = 0; type < SHMEM_MAXQUOTAS; type++)
+		dquot_quota_off(sb, type);
+}
+
+static struct dquot **shmem_get_dquots(struct inode *inode)
+{
+	return SHMEM_I(inode)->i_dquot;
+}
+#endif /* CONFIG_TMPFS_QUOTA */
+
 /*
  * shmem_reserve_inode() performs bookkeeping to reserve a shmem inode, and
  * produces a novel ino for the newly allocated inode.
@@ -360,7 +415,6 @@ static void shmem_recalc_inode(struct inode *inode)
 	freed = info->alloced - info->swapped - inode->i_mapping->nrpages;
 	if (freed > 0) {
 		info->alloced -= freed;
-		inode->i_blocks -= freed * BLOCKS_PER_PAGE;
 		shmem_inode_unacct_blocks(inode, freed);
 	}
 }
@@ -378,7 +432,6 @@ bool shmem_charge(struct inode *inode, long pages)
 
 	spin_lock_irqsave(&info->lock, flags);
 	info->alloced += pages;
-	inode->i_blocks += pages * BLOCKS_PER_PAGE;
 	shmem_recalc_inode(inode);
 	spin_unlock_irqrestore(&info->lock, flags);
 
@@ -394,7 +447,6 @@ void shmem_uncharge(struct inode *inode, long pages)
 
 	spin_lock_irqsave(&info->lock, flags);
 	info->alloced -= pages;
-	inode->i_blocks -= pages * BLOCKS_PER_PAGE;
 	shmem_recalc_inode(inode);
 	spin_unlock_irqrestore(&info->lock, flags);
 
@@ -1133,6 +1185,21 @@ static int shmem_setattr(struct mnt_idmap *idmap,
 		}
 	}
 
+	if (is_quota_modification(idmap, inode, attr)) {
+		error = dquot_initialize(inode);
+		if (error)
+			return error;
+	}
+
+	/* Transfer quota accounting */
+	if (i_uid_needs_update(idmap, attr, inode) ||
+	    i_gid_needs_update(idmap, attr, inode)) {
+		error = dquot_transfer(idmap, inode, attr);
+
+		if (error)
+			return error;
+	}
+
 	setattr_copy(idmap, inode, attr);
 	if (attr->ia_valid & ATTR_MODE)
 		error = posix_acl_chmod(idmap, dentry, inode->i_mode);
@@ -1179,6 +1246,10 @@ static void shmem_evict_inode(struct inode *inode)
 	WARN_ON(inode->i_blocks);
 	shmem_free_inode(inode->i_sb);
 	clear_inode(inode);
+#ifdef CONFIG_TMPFS_QUOTA
+	dquot_free_inode(inode);
+	dquot_drop(inode);
+#endif
 }
 
 static int shmem_find_swap_entries(struct address_space *mapping,
@@ -1975,7 +2046,6 @@ static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index,
 
 	spin_lock_irq(&info->lock);
 	info->alloced += folio_nr_pages(folio);
-	inode->i_blocks += (blkcnt_t)BLOCKS_PER_PAGE << folio_order(folio);
 	shmem_recalc_inode(inode);
 	spin_unlock_irq(&info->lock);
 	alloced = true;
@@ -2346,9 +2416,10 @@ static void shmem_set_inode_flags(struct inode *inode, unsigned int fsflags)
 #define shmem_initxattrs NULL
 #endif
 
-static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block *sb,
-				     struct inode *dir, umode_t mode, dev_t dev,
-				     unsigned long flags)
+static struct inode *__shmem_get_inode(struct mnt_idmap *idmap,
+					     struct super_block *sb,
+					     struct inode *dir, umode_t mode,
+					     dev_t dev, unsigned long flags)
 {
 	struct inode *inode;
 	struct shmem_inode_info *info;
@@ -2422,6 +2493,43 @@ static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block
 	return inode;
 }
 
+#ifdef CONFIG_TMPFS_QUOTA
+static struct inode *shmem_get_inode(struct mnt_idmap *idmap,
+				     struct super_block *sb, struct inode *dir,
+				     umode_t mode, dev_t dev, unsigned long flags)
+{
+	int err;
+	struct inode *inode;
+
+	inode = __shmem_get_inode(idmap, sb, dir, mode, dev, flags);
+	if (IS_ERR(inode))
+		return inode;
+
+	err = dquot_initialize(inode);
+	if (err)
+		goto errout;
+
+	err = dquot_alloc_inode(inode);
+	if (err) {
+		dquot_drop(inode);
+		goto errout;
+	}
+	return inode;
+
+errout:
+	inode->i_flags |= S_NOQUOTA;
+	iput(inode);
+	return ERR_PTR(err);
+}
+#else
+static inline struct inode *shmem_get_inode(struct mnt_idmap *idmap,
+				     struct super_block *sb, struct inode *dir,
+				     umode_t mode, dev_t dev, unsigned long flags)
+{
+	return __shmem_get_inode(idmap, sb, dir, mode, dev, flags);
+}
+#endif /* CONFIG_TMPFS_QUOTA */
+
 #ifdef CONFIG_USERFAULTFD
 int shmem_mfill_atomic_pte(struct mm_struct *dst_mm,
 			   pmd_t *dst_pmd,
@@ -2525,7 +2633,6 @@ int shmem_mfill_atomic_pte(struct mm_struct *dst_mm,
 
 	spin_lock_irq(&info->lock);
 	info->alloced++;
-	inode->i_blocks += BLOCKS_PER_PAGE;
 	shmem_recalc_inode(inode);
 	spin_unlock_irq(&info->lock);
 
@@ -3375,6 +3482,7 @@ static ssize_t shmem_listxattr(struct dentry *dentry, char *buffer, size_t size)
 
 static const struct inode_operations shmem_short_symlink_operations = {
 	.getattr	= shmem_getattr,
+	.setattr	= shmem_setattr,
 	.get_link	= simple_get_link,
 #ifdef CONFIG_TMPFS_XATTR
 	.listxattr	= shmem_listxattr,
@@ -3383,6 +3491,7 @@ static const struct inode_operations shmem_short_symlink_operations = {
 
 static const struct inode_operations shmem_symlink_inode_operations = {
 	.getattr	= shmem_getattr,
+	.setattr	= shmem_setattr,
 	.get_link	= shmem_get_link,
 #ifdef CONFIG_TMPFS_XATTR
 	.listxattr	= shmem_listxattr,
@@ -3481,6 +3590,9 @@ enum shmem_param {
 	Opt_uid,
 	Opt_inode32,
 	Opt_inode64,
+	Opt_quota,
+	Opt_usrquota,
+	Opt_grpquota,
 };
 
 static const struct constant_table shmem_param_enums_huge[] = {
@@ -3502,6 +3614,11 @@ const struct fs_parameter_spec shmem_fs_parameters[] = {
 	fsparam_u32   ("uid",		Opt_uid),
 	fsparam_flag  ("inode32",	Opt_inode32),
 	fsparam_flag  ("inode64",	Opt_inode64),
+#ifdef CONFIG_TMPFS_QUOTA
+	fsparam_flag  ("quota",		Opt_quota),
+	fsparam_flag  ("usrquota",	Opt_usrquota),
+	fsparam_flag  ("grpquota",	Opt_grpquota),
+#endif
 	{}
 };
 
@@ -3585,6 +3702,18 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
 		ctx->full_inums = true;
 		ctx->seen |= SHMEM_SEEN_INUMS;
 		break;
+	case Opt_quota:
+		ctx->seen |= SHMEM_SEEN_QUOTA;
+		ctx->quota_types |= (QTYPE_MASK_USR | QTYPE_MASK_GRP);
+		break;
+	case Opt_usrquota:
+		ctx->seen |= SHMEM_SEEN_QUOTA;
+		ctx->quota_types |= QTYPE_MASK_USR;
+		break;
+	case Opt_grpquota:
+		ctx->seen |= SHMEM_SEEN_QUOTA;
+		ctx->quota_types |= QTYPE_MASK_GRP;
+		break;
 	}
 	return 0;
 
@@ -3684,6 +3813,12 @@ static int shmem_reconfigure(struct fs_context *fc)
 		goto out;
 	}
 
+	if (ctx->seen & SHMEM_SEEN_QUOTA &&
+	    !sb_any_quota_loaded(fc->root->d_sb)) {
+		err = "Cannot enable quota on remount";
+		goto out;
+	}
+
 	if (ctx->seen & SHMEM_SEEN_HUGE)
 		sbinfo->huge = ctx->huge;
 	if (ctx->seen & SHMEM_SEEN_INUMS)
@@ -3766,6 +3901,9 @@ static void shmem_put_super(struct super_block *sb)
 {
 	struct shmem_sb_info *sbinfo = SHMEM_SB(sb);
 
+#ifdef CONFIG_TMPFS_QUOTA
+	shmem_disable_quotas(sb);
+#endif
 	free_percpu(sbinfo->ino_batch);
 	percpu_counter_destroy(&sbinfo->used_blocks);
 	mpol_put(sbinfo->mpol);
@@ -3844,6 +3982,17 @@ static int shmem_fill_super(struct super_block *sb, struct fs_context *fc)
 #endif
 	uuid_gen(&sb->s_uuid);
 
+#ifdef CONFIG_TMPFS_QUOTA
+	if (ctx->seen & SHMEM_SEEN_QUOTA) {
+		sb->dq_op = &shmem_quota_operations;
+		sb->s_qcop = &dquot_quotactl_sysfile_ops;
+		sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
+
+		if (shmem_enable_quotas(sb, ctx->quota_types))
+			goto failed;
+	}
+#endif /* CONFIG_TMPFS_QUOTA */
+
 	inode = shmem_get_inode(&nop_mnt_idmap, sb, NULL, S_IFDIR | sbinfo->mode, 0,
 				VM_NORESERVE);
 	if (IS_ERR(inode)) {
@@ -4019,6 +4168,9 @@ static const struct super_operations shmem_ops = {
 #ifdef CONFIG_TMPFS
 	.statfs		= shmem_statfs,
 	.show_options	= shmem_show_options,
+#endif
+#ifdef CONFIG_TMPFS_QUOTA
+	.get_dquots	= shmem_get_dquots,
 #endif
 	.evict_inode	= shmem_evict_inode,
 	.drop_inode	= generic_delete_inode,
@@ -4085,6 +4237,14 @@ void __init shmem_init(void)
 
 	shmem_init_inodecache();
 
+#ifdef CONFIG_TMPFS_QUOTA
+	error = register_quota_format(&shmem_quota_format);
+	if (error < 0) {
+		pr_err("Could not register quota format\n");
+		goto out3;
+	}
+#endif
+
 	error = register_filesystem(&shmem_fs_type);
 	if (error) {
 		pr_err("Could not register tmpfs\n");
@@ -4109,6 +4269,10 @@ void __init shmem_init(void)
 out1:
 	unregister_filesystem(&shmem_fs_type);
 out2:
+#ifdef CONFIG_TMPFS_QUOTA
+	unregister_quota_format(&shmem_quota_format);
+out3:
+#endif
 	shmem_destroy_inodecache();
 	shm_mnt = ERR_PTR(error);
 }
-- 
2.30.2

[PATCH RESEND V4 0/6] shmem: Add user and group quota support for tmpfs

[cem]

From: Carlos Maiolino <cem@kernel.org>

Hello folks.

This is a resend of the quota support for tmpfs. This has been rebased on
today Linus's TOT. These patches conflicted with Luis Chamberlain's series to
include 'noswap' mount option to tmpfs, there was no code change since the
previous version, other than moving the implementation of quota options 'after'
'noswap'.

Honza, giving the fact the conflicts were basically due context, I thought it
was ok to keep your RwB on the patches, could you please confirm it? My
apologies if I should have removed the RwB tags.

As before, details are within each patch.

The original cover-letter follows...

people have been asking for quota support in tmpfs many times in the past
mostly to avoid one malicious user, or misbehaving user/program to consume
all of the system memory. This has been partially solved with the size
mount option, but some problems still prevail.

One of the problems is the fact that /dev/shm is still generally unprotected
with this and another is administration overhead of managing multiple tmpfs
mounts and lack of more fine grained control.

Quota support can solve all these problems in a somewhat standard way
people are already familiar with from regular file systems. It can give us
more fine grained control over how much memory user/groups can consume.
Additionally it can also control number of inodes and with special quota
mount options introduced with a second patch we can set global limits
allowing us to replace the size mount option with quota entirely.

Currently the standard userspace quota tools (quota, xfs_quota) are only
using quotactl ioctl which is expecting a block device. I patched quota [1]
and xfs_quota [2] to use quotactl_fd in case we want to run the tools on
mount point directory to work nicely with tmpfs.

The implementation was tested on patched version of xfstests [3].

[1] https://github.com/lczerner/quota/tree/quotactl_fd_support
[2] https://github.com/lczerner/xfsprogs/tree/quotactl_fd_support
[3] https://github.com/lczerner/xfstests/tree/tmpfs_quota_support


Jan Kara (1):
  quota: Check presence of quota operation structures instead of
    ->quota_read and ->quota_write callbacks

Lukas Czerner (5):
  shmem: make shmem_inode_acct_block() return error
  shmem: make shmem_get_inode() return ERR_PTR instead of NULL
  shmem: prepare shmem quota infrastructure
  shmem: quota support
  Add default quota limit mount options

 Documentation/filesystems/tmpfs.rst |  31 ++
 fs/Kconfig                          |  12 +
 fs/quota/dquot.c                    |   2 +-
 include/linux/shmem_fs.h            |  28 ++
 include/uapi/linux/quota.h          |   1 +
 mm/Makefile                         |   2 +-
 mm/shmem.c                          | 465 +++++++++++++++++++++-------
 mm/shmem_quota.c                    | 350 +++++++++++++++++++++
 8 files changed, 783 insertions(+), 108 deletions(-)
 create mode 100644 mm/shmem_quota.c

Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
-- 
2.30.2

[PATCH 5/6] shmem: quota support

[cem]

From: Carlos Maiolino <cem@kernel.org>

Now the basic infra-structure is in place, enable quota support for tmpfs.

This offers user and group quotas to tmpfs (project quotas will be added
later). Also, as other filesystems, the tmpfs quota is not supported
within user namespaces yet, so idmapping is not translated.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
---
 Documentation/filesystems/tmpfs.rst |  15 +++
 include/linux/shmem_fs.h            |   8 ++
 mm/shmem.c                          | 180 ++++++++++++++++++++++++++--
 3 files changed, 195 insertions(+), 8 deletions(-)

diff --git a/Documentation/filesystems/tmpfs.rst b/Documentation/filesystems/tmpfs.rst
index f18f46be5c0c..0c7d8bd052f1 100644
--- a/Documentation/filesystems/tmpfs.rst
+++ b/Documentation/filesystems/tmpfs.rst
@@ -130,6 +130,21 @@ for emergency or testing purposes. The values you can set for shmem_enabled are:
     option, for testing
 ==  ============================================================
 
+tmpfs also supports quota with the following mount options
+
+========  =============================================================
+quota     User and group quota accounting and enforcement is enabled on
+          the mount. Tmpfs is using hidden system quota files that are
+          initialized on mount.
+usrquota  User quota accounting and enforcement is enabled on the
+          mount.
+grpquota  Group quota accounting and enforcement is enabled on the
+          mount.
+========  =============================================================
+
+Note that tmpfs quotas do not support user namespaces so no uid/gid
+translation is done if quotas are enabled inside user namespaces.
+
 tmpfs has a mount option to set the NUMA memory allocation policy for
 all files in that instance (if CONFIG_NUMA is enabled) - which can be
 adjusted on the fly via 'mount -o remount ...'
diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index 7abfaf70b58a..1a568a0f542f 100644
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -31,6 +31,9 @@ struct shmem_inode_info {
 	atomic_t		stop_eviction;	/* hold when working on inode */
 	struct timespec64	i_crtime;	/* file creation time */
 	unsigned int		fsflags;	/* flags for FS_IOC_[SG]ETFLAGS */
+#ifdef CONFIG_TMPFS_QUOTA
+	struct dquot		*i_dquot[MAXQUOTAS];
+#endif
 	struct inode		vfs_inode;
 };
 
@@ -184,4 +187,9 @@ extern int shmem_mfill_atomic_pte(pmd_t *dst_pmd,
 #define SHMEM_QUOTA_MAX_SPC_LIMIT 0x7fffffffffffffffLL /* 2^63-1 */
 #define SHMEM_QUOTA_MAX_INO_LIMIT 0x7fffffffffffffffLL
 
+#ifdef CONFIG_TMPFS_QUOTA
+extern const struct dquot_operations shmem_quota_operations;
+extern struct quota_format_type shmem_quota_format;
+#endif /* CONFIG_TMPFS_QUOTA */
+
 #endif
diff --git a/mm/shmem.c b/mm/shmem.c
index 2a7b8060b6f4..5022238dd68d 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -78,6 +78,7 @@ static struct vfsmount *shm_mnt;
 #include <uapi/linux/memfd.h>
 #include <linux/rmap.h>
 #include <linux/uuid.h>
+#include <linux/quotaops.h>
 
 #include <linux/uaccess.h>
 
@@ -116,11 +117,13 @@ struct shmem_options {
 	int huge;
 	int seen;
 	bool noswap;
+	unsigned short quota_types;
 #define SHMEM_SEEN_BLOCKS 1
 #define SHMEM_SEEN_INODES 2
 #define SHMEM_SEEN_HUGE 4
 #define SHMEM_SEEN_INUMS 8
 #define SHMEM_SEEN_NOSWAP 16
+#define SHMEM_SEEN_QUOTA 32
 };
 
 #ifdef CONFIG_TMPFS
@@ -212,7 +215,16 @@ static inline int shmem_inode_acct_block(struct inode *inode, long pages)
 		if (percpu_counter_compare(&sbinfo->used_blocks,
 					   sbinfo->max_blocks - pages) > 0)
 			goto unacct;
+
+		err = dquot_alloc_block_nodirty(inode, pages);
+		if (err)
+			goto unacct;
+
 		percpu_counter_add(&sbinfo->used_blocks, pages);
+	} else {
+		err = dquot_alloc_block_nodirty(inode, pages);
+		if (err)
+			goto unacct;
 	}
 
 	return 0;
@@ -227,6 +239,8 @@ static inline void shmem_inode_unacct_blocks(struct inode *inode, long pages)
 	struct shmem_inode_info *info = SHMEM_I(inode);
 	struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb);
 
+	dquot_free_block_nodirty(inode, pages);
+
 	if (sbinfo->max_blocks)
 		percpu_counter_sub(&sbinfo->used_blocks, pages);
 	shmem_unacct_blocks(info->flags, pages);
@@ -255,6 +269,47 @@ bool vma_is_shmem(struct vm_area_struct *vma)
 static LIST_HEAD(shmem_swaplist);
 static DEFINE_MUTEX(shmem_swaplist_mutex);
 
+#ifdef CONFIG_TMPFS_QUOTA
+
+static int shmem_enable_quotas(struct super_block *sb,
+			       unsigned short quota_types)
+{
+	int type, err = 0;
+
+	sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NOLIST_DIRTY;
+	for (type = 0; type < SHMEM_MAXQUOTAS; type++) {
+		if (!(quota_types & (1 << type)))
+			continue;
+		err = dquot_load_quota_sb(sb, type, QFMT_SHMEM,
+					  DQUOT_USAGE_ENABLED |
+					  DQUOT_LIMITS_ENABLED);
+		if (err)
+			goto out_err;
+	}
+	return 0;
+
+out_err:
+	pr_warn("tmpfs: failed to enable quota tracking (type=%d, err=%d)\n",
+		type, err);
+	for (type--; type >= 0; type--)
+		dquot_quota_off(sb, type);
+	return err;
+}
+
+static void shmem_disable_quotas(struct super_block *sb)
+{
+	int type;
+
+	for (type = 0; type < SHMEM_MAXQUOTAS; type++)
+		dquot_quota_off(sb, type);
+}
+
+static struct dquot **shmem_get_dquots(struct inode *inode)
+{
+	return SHMEM_I(inode)->i_dquot;
+}
+#endif /* CONFIG_TMPFS_QUOTA */
+
 /*
  * shmem_reserve_inode() performs bookkeeping to reserve a shmem inode, and
  * produces a novel ino for the newly allocated inode.
@@ -361,7 +416,6 @@ static void shmem_recalc_inode(struct inode *inode)
 	freed = info->alloced - info->swapped - inode->i_mapping->nrpages;
 	if (freed > 0) {
 		info->alloced -= freed;
-		inode->i_blocks -= freed * BLOCKS_PER_PAGE;
 		shmem_inode_unacct_blocks(inode, freed);
 	}
 }
@@ -379,7 +433,6 @@ bool shmem_charge(struct inode *inode, long pages)
 
 	spin_lock_irqsave(&info->lock, flags);
 	info->alloced += pages;
-	inode->i_blocks += pages * BLOCKS_PER_PAGE;
 	shmem_recalc_inode(inode);
 	spin_unlock_irqrestore(&info->lock, flags);
 
@@ -395,7 +448,6 @@ void shmem_uncharge(struct inode *inode, long pages)
 
 	spin_lock_irqsave(&info->lock, flags);
 	info->alloced -= pages;
-	inode->i_blocks -= pages * BLOCKS_PER_PAGE;
 	shmem_recalc_inode(inode);
 	spin_unlock_irqrestore(&info->lock, flags);
 
@@ -1141,6 +1193,21 @@ static int shmem_setattr(struct mnt_idmap *idmap,
 		}
 	}
 
+	if (is_quota_modification(idmap, inode, attr)) {
+		error = dquot_initialize(inode);
+		if (error)
+			return error;
+	}
+
+	/* Transfer quota accounting */
+	if (i_uid_needs_update(idmap, attr, inode) ||
+	    i_gid_needs_update(idmap, attr, inode)) {
+		error = dquot_transfer(idmap, inode, attr);
+
+		if (error)
+			return error;
+	}
+
 	setattr_copy(idmap, inode, attr);
 	if (attr->ia_valid & ATTR_MODE)
 		error = posix_acl_chmod(idmap, dentry, inode->i_mode);
@@ -1187,6 +1254,10 @@ static void shmem_evict_inode(struct inode *inode)
 	WARN_ON(inode->i_blocks);
 	shmem_free_inode(inode->i_sb);
 	clear_inode(inode);
+#ifdef CONFIG_TMPFS_QUOTA
+	dquot_free_inode(inode);
+	dquot_drop(inode);
+#endif
 }
 
 static int shmem_find_swap_entries(struct address_space *mapping,
@@ -1986,7 +2057,6 @@ static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index,
 
 	spin_lock_irq(&info->lock);
 	info->alloced += folio_nr_pages(folio);
-	inode->i_blocks += (blkcnt_t)BLOCKS_PER_PAGE << folio_order(folio);
 	shmem_recalc_inode(inode);
 	spin_unlock_irq(&info->lock);
 	alloced = true;
@@ -2357,9 +2427,10 @@ static void shmem_set_inode_flags(struct inode *inode, unsigned int fsflags)
 #define shmem_initxattrs NULL
 #endif
 
-static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block *sb,
-				     struct inode *dir, umode_t mode, dev_t dev,
-				     unsigned long flags)
+static struct inode *__shmem_get_inode(struct mnt_idmap *idmap,
+					     struct super_block *sb,
+					     struct inode *dir, umode_t mode,
+					     dev_t dev, unsigned long flags)
 {
 	struct inode *inode;
 	struct shmem_inode_info *info;
@@ -2436,6 +2507,43 @@ static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block
 	return inode;
 }
 
+#ifdef CONFIG_TMPFS_QUOTA
+static struct inode *shmem_get_inode(struct mnt_idmap *idmap,
+				     struct super_block *sb, struct inode *dir,
+				     umode_t mode, dev_t dev, unsigned long flags)
+{
+	int err;
+	struct inode *inode;
+
+	inode = __shmem_get_inode(idmap, sb, dir, mode, dev, flags);
+	if (IS_ERR(inode))
+		return inode;
+
+	err = dquot_initialize(inode);
+	if (err)
+		goto errout;
+
+	err = dquot_alloc_inode(inode);
+	if (err) {
+		dquot_drop(inode);
+		goto errout;
+	}
+	return inode;
+
+errout:
+	inode->i_flags |= S_NOQUOTA;
+	iput(inode);
+	return ERR_PTR(err);
+}
+#else
+static inline struct inode *shmem_get_inode(struct mnt_idmap *idmap,
+				     struct super_block *sb, struct inode *dir,
+				     umode_t mode, dev_t dev, unsigned long flags)
+{
+	return __shmem_get_inode(idmap, sb, dir, mode, dev, flags);
+}
+#endif /* CONFIG_TMPFS_QUOTA */
+
 #ifdef CONFIG_USERFAULTFD
 int shmem_mfill_atomic_pte(pmd_t *dst_pmd,
 			   struct vm_area_struct *dst_vma,
@@ -2538,7 +2646,6 @@ int shmem_mfill_atomic_pte(pmd_t *dst_pmd,
 
 	spin_lock_irq(&info->lock);
 	info->alloced++;
-	inode->i_blocks += BLOCKS_PER_PAGE;
 	shmem_recalc_inode(inode);
 	spin_unlock_irq(&info->lock);
 
@@ -3516,6 +3623,7 @@ static ssize_t shmem_listxattr(struct dentry *dentry, char *buffer, size_t size)
 
 static const struct inode_operations shmem_short_symlink_operations = {
 	.getattr	= shmem_getattr,
+	.setattr	= shmem_setattr,
 	.get_link	= simple_get_link,
 #ifdef CONFIG_TMPFS_XATTR
 	.listxattr	= shmem_listxattr,
@@ -3524,6 +3632,7 @@ static const struct inode_operations shmem_short_symlink_operations = {
 
 static const struct inode_operations shmem_symlink_inode_operations = {
 	.getattr	= shmem_getattr,
+	.setattr	= shmem_setattr,
 	.get_link	= shmem_get_link,
 #ifdef CONFIG_TMPFS_XATTR
 	.listxattr	= shmem_listxattr,
@@ -3623,6 +3732,9 @@ enum shmem_param {
 	Opt_inode32,
 	Opt_inode64,
 	Opt_noswap,
+	Opt_quota,
+	Opt_usrquota,
+	Opt_grpquota,
 };
 
 static const struct constant_table shmem_param_enums_huge[] = {
@@ -3645,6 +3757,11 @@ const struct fs_parameter_spec shmem_fs_parameters[] = {
 	fsparam_flag  ("inode32",	Opt_inode32),
 	fsparam_flag  ("inode64",	Opt_inode64),
 	fsparam_flag  ("noswap",	Opt_noswap),
+#ifdef CONFIG_TMPFS_QUOTA
+	fsparam_flag  ("quota",		Opt_quota),
+	fsparam_flag  ("usrquota",	Opt_usrquota),
+	fsparam_flag  ("grpquota",	Opt_grpquota),
+#endif
 	{}
 };
 
@@ -3736,6 +3853,18 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
 		ctx->noswap = true;
 		ctx->seen |= SHMEM_SEEN_NOSWAP;
 		break;
+	case Opt_quota:
+		ctx->seen |= SHMEM_SEEN_QUOTA;
+		ctx->quota_types |= (QTYPE_MASK_USR | QTYPE_MASK_GRP);
+		break;
+	case Opt_usrquota:
+		ctx->seen |= SHMEM_SEEN_QUOTA;
+		ctx->quota_types |= QTYPE_MASK_USR;
+		break;
+	case Opt_grpquota:
+		ctx->seen |= SHMEM_SEEN_QUOTA;
+		ctx->quota_types |= QTYPE_MASK_GRP;
+		break;
 	}
 	return 0;
 
@@ -3843,6 +3972,12 @@ static int shmem_reconfigure(struct fs_context *fc)
 		goto out;
 	}
 
+	if (ctx->seen & SHMEM_SEEN_QUOTA &&
+	    !sb_any_quota_loaded(fc->root->d_sb)) {
+		err = "Cannot enable quota on remount";
+		goto out;
+	}
+
 	if (ctx->seen & SHMEM_SEEN_HUGE)
 		sbinfo->huge = ctx->huge;
 	if (ctx->seen & SHMEM_SEEN_INUMS)
@@ -3934,6 +4069,9 @@ static void shmem_put_super(struct super_block *sb)
 {
 	struct shmem_sb_info *sbinfo = SHMEM_SB(sb);
 
+#ifdef CONFIG_TMPFS_QUOTA
+	shmem_disable_quotas(sb);
+#endif
 	free_percpu(sbinfo->ino_batch);
 	percpu_counter_destroy(&sbinfo->used_blocks);
 	mpol_put(sbinfo->mpol);
@@ -4013,6 +4151,17 @@ static int shmem_fill_super(struct super_block *sb, struct fs_context *fc)
 #endif
 	uuid_gen(&sb->s_uuid);
 
+#ifdef CONFIG_TMPFS_QUOTA
+	if (ctx->seen & SHMEM_SEEN_QUOTA) {
+		sb->dq_op = &shmem_quota_operations;
+		sb->s_qcop = &dquot_quotactl_sysfile_ops;
+		sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
+
+		if (shmem_enable_quotas(sb, ctx->quota_types))
+			goto failed;
+	}
+#endif /* CONFIG_TMPFS_QUOTA */
+
 	inode = shmem_get_inode(&nop_mnt_idmap, sb, NULL, S_IFDIR | sbinfo->mode, 0,
 				VM_NORESERVE);
 	if (IS_ERR(inode)) {
@@ -4188,6 +4337,9 @@ static const struct super_operations shmem_ops = {
 #ifdef CONFIG_TMPFS
 	.statfs		= shmem_statfs,
 	.show_options	= shmem_show_options,
+#endif
+#ifdef CONFIG_TMPFS_QUOTA
+	.get_dquots	= shmem_get_dquots,
 #endif
 	.evict_inode	= shmem_evict_inode,
 	.drop_inode	= generic_delete_inode,
@@ -4254,6 +4406,14 @@ void __init shmem_init(void)
 
 	shmem_init_inodecache();
 
+#ifdef CONFIG_TMPFS_QUOTA
+	error = register_quota_format(&shmem_quota_format);
+	if (error < 0) {
+		pr_err("Could not register quota format\n");
+		goto out3;
+	}
+#endif
+
 	error = register_filesystem(&shmem_fs_type);
 	if (error) {
 		pr_err("Could not register tmpfs\n");
@@ -4278,6 +4438,10 @@ void __init shmem_init(void)
 out1:
 	unregister_filesystem(&shmem_fs_type);
 out2:
+#ifdef CONFIG_TMPFS_QUOTA
+	unregister_quota_format(&shmem_quota_format);
+out3:
+#endif
 	shmem_destroy_inodecache();
 	shm_mnt = ERR_PTR(error);
 }
-- 
2.39.2

Re: [PATCH 5/6] shmem: quota support

[Christian Brauner]

On Thu, Jul 13, 2023 at 03:48:47PM +0200, cem@kernel.org wrote:
> From: Carlos Maiolino <cem@kernel.org>
> 
> Now the basic infra-structure is in place, enable quota support for tmpfs.
> 
> This offers user and group quotas to tmpfs (project quotas will be added
> later). Also, as other filesystems, the tmpfs quota is not supported
> within user namespaces yet, so idmapping is not translated.
> 
> Signed-off-by: Lukas Czerner <lczerner@redhat.com>
> Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
> Reviewed-by: Jan Kara <jack@suse.cz>
> ---
>  Documentation/filesystems/tmpfs.rst |  15 +++
>  include/linux/shmem_fs.h            |   8 ++
>  mm/shmem.c                          | 180 ++++++++++++++++++++++++++--
>  3 files changed, 195 insertions(+), 8 deletions(-)
> 
> diff --git a/Documentation/filesystems/tmpfs.rst b/Documentation/filesystems/tmpfs.rst
> index f18f46be5c0c..0c7d8bd052f1 100644
> --- a/Documentation/filesystems/tmpfs.rst
> +++ b/Documentation/filesystems/tmpfs.rst
> @@ -130,6 +130,21 @@ for emergency or testing purposes. The values you can set for shmem_enabled are:
>      option, for testing
>  ==  ============================================================
>  
> +tmpfs also supports quota with the following mount options
> +
> +========  =============================================================
> +quota     User and group quota accounting and enforcement is enabled on
> +          the mount. Tmpfs is using hidden system quota files that are
> +          initialized on mount.
> +usrquota  User quota accounting and enforcement is enabled on the
> +          mount.
> +grpquota  Group quota accounting and enforcement is enabled on the
> +          mount.
> +========  =============================================================
> +
> +Note that tmpfs quotas do not support user namespaces so no uid/gid
> +translation is done if quotas are enabled inside user namespaces.
> +
>  tmpfs has a mount option to set the NUMA memory allocation policy for
>  all files in that instance (if CONFIG_NUMA is enabled) - which can be
>  adjusted on the fly via 'mount -o remount ...'
> diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
> index 7abfaf70b58a..1a568a0f542f 100644
> --- a/include/linux/shmem_fs.h
> +++ b/include/linux/shmem_fs.h
> @@ -31,6 +31,9 @@ struct shmem_inode_info {
>  	atomic_t		stop_eviction;	/* hold when working on inode */
>  	struct timespec64	i_crtime;	/* file creation time */
>  	unsigned int		fsflags;	/* flags for FS_IOC_[SG]ETFLAGS */
> +#ifdef CONFIG_TMPFS_QUOTA
> +	struct dquot		*i_dquot[MAXQUOTAS];
> +#endif
>  	struct inode		vfs_inode;
>  };
>  
> @@ -184,4 +187,9 @@ extern int shmem_mfill_atomic_pte(pmd_t *dst_pmd,
>  #define SHMEM_QUOTA_MAX_SPC_LIMIT 0x7fffffffffffffffLL /* 2^63-1 */
>  #define SHMEM_QUOTA_MAX_INO_LIMIT 0x7fffffffffffffffLL
>  
> +#ifdef CONFIG_TMPFS_QUOTA
> +extern const struct dquot_operations shmem_quota_operations;
> +extern struct quota_format_type shmem_quota_format;
> +#endif /* CONFIG_TMPFS_QUOTA */
> +
>  #endif
> diff --git a/mm/shmem.c b/mm/shmem.c
> index 2a7b8060b6f4..5022238dd68d 100644
> --- a/mm/shmem.c
> +++ b/mm/shmem.c
> @@ -78,6 +78,7 @@ static struct vfsmount *shm_mnt;
>  #include <uapi/linux/memfd.h>
>  #include <linux/rmap.h>
>  #include <linux/uuid.h>
> +#include <linux/quotaops.h>
>  
>  #include <linux/uaccess.h>
>  
> @@ -116,11 +117,13 @@ struct shmem_options {
>  	int huge;
>  	int seen;
>  	bool noswap;
> +	unsigned short quota_types;
>  #define SHMEM_SEEN_BLOCKS 1
>  #define SHMEM_SEEN_INODES 2
>  #define SHMEM_SEEN_HUGE 4
>  #define SHMEM_SEEN_INUMS 8
>  #define SHMEM_SEEN_NOSWAP 16
> +#define SHMEM_SEEN_QUOTA 32
>  };
>  
>  #ifdef CONFIG_TMPFS
> @@ -212,7 +215,16 @@ static inline int shmem_inode_acct_block(struct inode *inode, long pages)
>  		if (percpu_counter_compare(&sbinfo->used_blocks,
>  					   sbinfo->max_blocks - pages) > 0)
>  			goto unacct;
> +
> +		err = dquot_alloc_block_nodirty(inode, pages);
> +		if (err)
> +			goto unacct;
> +
>  		percpu_counter_add(&sbinfo->used_blocks, pages);
> +	} else {
> +		err = dquot_alloc_block_nodirty(inode, pages);
> +		if (err)
> +			goto unacct;
>  	}
>  
>  	return 0;
> @@ -227,6 +239,8 @@ static inline void shmem_inode_unacct_blocks(struct inode *inode, long pages)
>  	struct shmem_inode_info *info = SHMEM_I(inode);
>  	struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb);
>  
> +	dquot_free_block_nodirty(inode, pages);
> +
>  	if (sbinfo->max_blocks)
>  		percpu_counter_sub(&sbinfo->used_blocks, pages);
>  	shmem_unacct_blocks(info->flags, pages);
> @@ -255,6 +269,47 @@ bool vma_is_shmem(struct vm_area_struct *vma)
>  static LIST_HEAD(shmem_swaplist);
>  static DEFINE_MUTEX(shmem_swaplist_mutex);
>  
> +#ifdef CONFIG_TMPFS_QUOTA
> +
> +static int shmem_enable_quotas(struct super_block *sb,
> +			       unsigned short quota_types)
> +{
> +	int type, err = 0;
> +
> +	sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NOLIST_DIRTY;
> +	for (type = 0; type < SHMEM_MAXQUOTAS; type++) {
> +		if (!(quota_types & (1 << type)))
> +			continue;
> +		err = dquot_load_quota_sb(sb, type, QFMT_SHMEM,
> +					  DQUOT_USAGE_ENABLED |
> +					  DQUOT_LIMITS_ENABLED);
> +		if (err)
> +			goto out_err;
> +	}
> +	return 0;
> +
> +out_err:
> +	pr_warn("tmpfs: failed to enable quota tracking (type=%d, err=%d)\n",
> +		type, err);
> +	for (type--; type >= 0; type--)
> +		dquot_quota_off(sb, type);
> +	return err;
> +}
> +
> +static void shmem_disable_quotas(struct super_block *sb)
> +{
> +	int type;
> +
> +	for (type = 0; type < SHMEM_MAXQUOTAS; type++)
> +		dquot_quota_off(sb, type);
> +}
> +
> +static struct dquot **shmem_get_dquots(struct inode *inode)
> +{
> +	return SHMEM_I(inode)->i_dquot;
> +}
> +#endif /* CONFIG_TMPFS_QUOTA */
> +
>  /*
>   * shmem_reserve_inode() performs bookkeeping to reserve a shmem inode, and
>   * produces a novel ino for the newly allocated inode.
> @@ -361,7 +416,6 @@ static void shmem_recalc_inode(struct inode *inode)
>  	freed = info->alloced - info->swapped - inode->i_mapping->nrpages;
>  	if (freed > 0) {
>  		info->alloced -= freed;
> -		inode->i_blocks -= freed * BLOCKS_PER_PAGE;
>  		shmem_inode_unacct_blocks(inode, freed);
>  	}
>  }
> @@ -379,7 +433,6 @@ bool shmem_charge(struct inode *inode, long pages)
>  
>  	spin_lock_irqsave(&info->lock, flags);
>  	info->alloced += pages;
> -	inode->i_blocks += pages * BLOCKS_PER_PAGE;
>  	shmem_recalc_inode(inode);
>  	spin_unlock_irqrestore(&info->lock, flags);
>  
> @@ -395,7 +448,6 @@ void shmem_uncharge(struct inode *inode, long pages)
>  
>  	spin_lock_irqsave(&info->lock, flags);
>  	info->alloced -= pages;
> -	inode->i_blocks -= pages * BLOCKS_PER_PAGE;
>  	shmem_recalc_inode(inode);
>  	spin_unlock_irqrestore(&info->lock, flags);
>  
> @@ -1141,6 +1193,21 @@ static int shmem_setattr(struct mnt_idmap *idmap,
>  		}
>  	}
>  
> +	if (is_quota_modification(idmap, inode, attr)) {
> +		error = dquot_initialize(inode);
> +		if (error)
> +			return error;
> +	}
> +
> +	/* Transfer quota accounting */
> +	if (i_uid_needs_update(idmap, attr, inode) ||
> +	    i_gid_needs_update(idmap, attr, inode)) {
> +		error = dquot_transfer(idmap, inode, attr);
> +
> +		if (error)
> +			return error;
> +	}
> +
>  	setattr_copy(idmap, inode, attr);
>  	if (attr->ia_valid & ATTR_MODE)
>  		error = posix_acl_chmod(idmap, dentry, inode->i_mode);
> @@ -1187,6 +1254,10 @@ static void shmem_evict_inode(struct inode *inode)
>  	WARN_ON(inode->i_blocks);
>  	shmem_free_inode(inode->i_sb);
>  	clear_inode(inode);
> +#ifdef CONFIG_TMPFS_QUOTA
> +	dquot_free_inode(inode);
> +	dquot_drop(inode);
> +#endif
>  }
>  
>  static int shmem_find_swap_entries(struct address_space *mapping,
> @@ -1986,7 +2057,6 @@ static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index,
>  
>  	spin_lock_irq(&info->lock);
>  	info->alloced += folio_nr_pages(folio);
> -	inode->i_blocks += (blkcnt_t)BLOCKS_PER_PAGE << folio_order(folio);
>  	shmem_recalc_inode(inode);
>  	spin_unlock_irq(&info->lock);
>  	alloced = true;
> @@ -2357,9 +2427,10 @@ static void shmem_set_inode_flags(struct inode *inode, unsigned int fsflags)
>  #define shmem_initxattrs NULL
>  #endif
>  
> -static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block *sb,
> -				     struct inode *dir, umode_t mode, dev_t dev,
> -				     unsigned long flags)
> +static struct inode *__shmem_get_inode(struct mnt_idmap *idmap,
> +					     struct super_block *sb,
> +					     struct inode *dir, umode_t mode,
> +					     dev_t dev, unsigned long flags)
>  {
>  	struct inode *inode;
>  	struct shmem_inode_info *info;
> @@ -2436,6 +2507,43 @@ static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block
>  	return inode;
>  }
>  
> +#ifdef CONFIG_TMPFS_QUOTA
> +static struct inode *shmem_get_inode(struct mnt_idmap *idmap,
> +				     struct super_block *sb, struct inode *dir,
> +				     umode_t mode, dev_t dev, unsigned long flags)
> +{
> +	int err;
> +	struct inode *inode;
> +
> +	inode = __shmem_get_inode(idmap, sb, dir, mode, dev, flags);
> +	if (IS_ERR(inode))
> +		return inode;
> +
> +	err = dquot_initialize(inode);
> +	if (err)
> +		goto errout;
> +
> +	err = dquot_alloc_inode(inode);
> +	if (err) {
> +		dquot_drop(inode);
> +		goto errout;
> +	}
> +	return inode;
> +
> +errout:
> +	inode->i_flags |= S_NOQUOTA;
> +	iput(inode);
> +	return ERR_PTR(err);
> +}
> +#else
> +static inline struct inode *shmem_get_inode(struct mnt_idmap *idmap,
> +				     struct super_block *sb, struct inode *dir,
> +				     umode_t mode, dev_t dev, unsigned long flags)
> +{
> +	return __shmem_get_inode(idmap, sb, dir, mode, dev, flags);
> +}
> +#endif /* CONFIG_TMPFS_QUOTA */
> +
>  #ifdef CONFIG_USERFAULTFD
>  int shmem_mfill_atomic_pte(pmd_t *dst_pmd,
>  			   struct vm_area_struct *dst_vma,
> @@ -2538,7 +2646,6 @@ int shmem_mfill_atomic_pte(pmd_t *dst_pmd,
>  
>  	spin_lock_irq(&info->lock);
>  	info->alloced++;
> -	inode->i_blocks += BLOCKS_PER_PAGE;
>  	shmem_recalc_inode(inode);
>  	spin_unlock_irq(&info->lock);
>  
> @@ -3516,6 +3623,7 @@ static ssize_t shmem_listxattr(struct dentry *dentry, char *buffer, size_t size)
>  
>  static const struct inode_operations shmem_short_symlink_operations = {
>  	.getattr	= shmem_getattr,
> +	.setattr	= shmem_setattr,
>  	.get_link	= simple_get_link,
>  #ifdef CONFIG_TMPFS_XATTR
>  	.listxattr	= shmem_listxattr,
> @@ -3524,6 +3632,7 @@ static const struct inode_operations shmem_short_symlink_operations = {
>  
>  static const struct inode_operations shmem_symlink_inode_operations = {
>  	.getattr	= shmem_getattr,
> +	.setattr	= shmem_setattr,
>  	.get_link	= shmem_get_link,
>  #ifdef CONFIG_TMPFS_XATTR
>  	.listxattr	= shmem_listxattr,
> @@ -3623,6 +3732,9 @@ enum shmem_param {
>  	Opt_inode32,
>  	Opt_inode64,
>  	Opt_noswap,
> +	Opt_quota,
> +	Opt_usrquota,
> +	Opt_grpquota,
>  };
>  
>  static const struct constant_table shmem_param_enums_huge[] = {
> @@ -3645,6 +3757,11 @@ const struct fs_parameter_spec shmem_fs_parameters[] = {
>  	fsparam_flag  ("inode32",	Opt_inode32),
>  	fsparam_flag  ("inode64",	Opt_inode64),
>  	fsparam_flag  ("noswap",	Opt_noswap),
> +#ifdef CONFIG_TMPFS_QUOTA
> +	fsparam_flag  ("quota",		Opt_quota),
> +	fsparam_flag  ("usrquota",	Opt_usrquota),
> +	fsparam_flag  ("grpquota",	Opt_grpquota),
> +#endif
>  	{}
>  };
>  
> @@ -3736,6 +3853,18 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
>  		ctx->noswap = true;
>  		ctx->seen |= SHMEM_SEEN_NOSWAP;
>  		break;
> +	case Opt_quota:
> +		ctx->seen |= SHMEM_SEEN_QUOTA;
> +		ctx->quota_types |= (QTYPE_MASK_USR | QTYPE_MASK_GRP);
> +		break;
> +	case Opt_usrquota:
> +		ctx->seen |= SHMEM_SEEN_QUOTA;
> +		ctx->quota_types |= QTYPE_MASK_USR;
> +		break;
> +	case Opt_grpquota:
> +		ctx->seen |= SHMEM_SEEN_QUOTA;
> +		ctx->quota_types |= QTYPE_MASK_GRP;
> +		break;
>  	}
>  	return 0;

I mentioned this in an earlier review; following the sequence:

if (ctx->seen & SHMEM_SEEN_QUOTA)
-> shmem_enable_quotas()
   -> dquot_load_quota_sb()

to then figure out that in dquot_load_quota_sb() we fail if
sb->s_user_ns != &init_user_ns is too subtle for a filesystem that's
mountable by unprivileged users. Every few months someone will end up
stumbling upon this code and wonder where it's blocked. There isn't even
a comment in the code.

Aside from that it's also really unfriendly to users because they may go
through setting up a tmpfs instances in the following way:

        fd_fs = fsopen("tmpfs");

User now enables quota:

        fsconfig(fd_fs, ..., "quota", ...) = 0

and goes on to set a bunch of other options:

        fsconfig(fd_fs, ..., "inode64", ...) = 0
        fsconfig(fd_fs, ..., "nr_inodes", ...) = 0
        fsconfig(fd_fs, ..., "nr_blocks", ...) = 0
        fsconfig(fd_fs, ..., "huge", ...) = 0
        fsconfig(fd_fs, ..., "mode", ...) = 0
        fsconfig(fd_fs, ..., "gid", ...) = 0

everything seems dandy and they create the superblock:

        fsconfig(fd_fs, FSCONFIG_CMD_CREATE, ...) = -EINVAL

which fails.

The user has not just performed 9 useless system calls they also have
zero clue what mount option caused the failure.

What this code really really should do is fail at:

        fsconfig(fd_fs, ..., "quota", ...) = -EINVAL

and log an error that the user can retrieve from the fs context. IOW,

diff --git a/mm/shmem.c b/mm/shmem.c
index 083ce6b478e7..baca8bf44569 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -3863,14 +3863,20 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
                ctx->seen |= SHMEM_SEEN_NOSWAP;
                break;
        case Opt_quota:
+               if (fc->user_ns != &init_user_ns)
+                       return invalfc(fc, "Quotas in unprivileged tmpfs mounts unsupported");
                ctx->seen |= SHMEM_SEEN_QUOTA;
                ctx->quota_types |= (QTYPE_MASK_USR | QTYPE_MASK_GRP);
                break;
        case Opt_usrquota:
+               if (fc->user_ns != &init_user_ns)
+                       return invalfc(fc, "Quotas in unprivileged tmpfs mounts unsupported");
                ctx->seen |= SHMEM_SEEN_QUOTA;
                ctx->quota_types |= QTYPE_MASK_USR;
                break;
        case Opt_grpquota:
+               if (fc->user_ns != &init_user_ns)
+                       return invalfc(fc, "Quotas in unprivileged tmpfs mounts unsupported");
                ctx->seen |= SHMEM_SEEN_QUOTA;
                ctx->quota_types |= QTYPE_MASK_GRP;
                break;

This exactly what we already to for the "noswap" option btw.

Could you fold these changes into the patch and resend, please?
I synced with Andrew earlier and I'll be taking this series.

---

And btw, the *_SEEN_* logic for mount options is broken - but that's not
specific to your patch. Imagine:

        fd_fs = fsopen("tmpfs");
        fsconfig(fd_fs, ..., "nr_inodes", 0, "1000") = 0

Now ctx->inodes == 1000 and ctx->seen |= SHMEM_SEEN_INODES.

Now the user does:

        fsconfig(fd_fs, ..., "nr_inodes", 0, "-1234") = -EINVAL

This fails, but:

        ctx->inodes = memparse(param->string, &rest);
        if (*rest)
                goto bad_value;

will set ctx->inodes to whatever memparse returns but leaves
SHMEM_SEEN_INODES raised in ctx->seen. Now superblock creation may
succeed with a garbage inode limit. This should affect other mount
options as well.

Re: [PATCH 5/6] shmem: quota support

[Carlos Maiolino]

Hi Christian.

> > @@ -3736,6 +3853,18 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
> >  		ctx->noswap = true;
> >  		ctx->seen |= SHMEM_SEEN_NOSWAP;
> >  		break;
> > +	case Opt_quota:
> > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > +		ctx->quota_types |= (QTYPE_MASK_USR | QTYPE_MASK_GRP);
> > +		break;
> > +	case Opt_usrquota:
> > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > +		ctx->quota_types |= QTYPE_MASK_USR;
> > +		break;
> > +	case Opt_grpquota:
> > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > +		ctx->quota_types |= QTYPE_MASK_GRP;
> > +		break;
> >  	}
> >  	return 0;
> 
> I mentioned this in an earlier review; following the sequence:

Ok, my apologies, I should have lost it in the noise.

> 
> if (ctx->seen & SHMEM_SEEN_QUOTA)
> -> shmem_enable_quotas()
>    -> dquot_load_quota_sb()
> 
> to then figure out that in dquot_load_quota_sb() we fail if
> sb->s_user_ns != &init_user_ns is too subtle for a filesystem that's
> mountable by unprivileged users. Every few months someone will end up
> stumbling upon this code and wonder where it's blocked. There isn't even
> a comment in the code.
> 
> Aside from that it's also really unfriendly to users because they may go
> through setting up a tmpfs instances in the following way:
> 
>         fd_fs = fsopen("tmpfs");
> 
> User now enables quota:
> 
>         fsconfig(fd_fs, ..., "quota", ...) = 0
> 
> and goes on to set a bunch of other options:
> 
>         fsconfig(fd_fs, ..., "inode64", ...) = 0
>         fsconfig(fd_fs, ..., "nr_inodes", ...) = 0
>         fsconfig(fd_fs, ..., "nr_blocks", ...) = 0
>         fsconfig(fd_fs, ..., "huge", ...) = 0
>         fsconfig(fd_fs, ..., "mode", ...) = 0
>         fsconfig(fd_fs, ..., "gid", ...) = 0
> 
> everything seems dandy and they create the superblock:
> 
>         fsconfig(fd_fs, FSCONFIG_CMD_CREATE, ...) = -EINVAL
> 
> which fails.
> 
> The user has not just performed 9 useless system calls they also have
> zero clue what mount option caused the failure.
> 
> What this code really really should do is fail at:
> 
>         fsconfig(fd_fs, ..., "quota", ...) = -EINVAL
> 
> and log an error that the user can retrieve from the fs context. IOW,
> 
> diff --git a/mm/shmem.c b/mm/shmem.c
> index 083ce6b478e7..baca8bf44569 100644
> --- a/mm/shmem.c
> +++ b/mm/shmem.c
> @@ -3863,14 +3863,20 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
>                 ctx->seen |= SHMEM_SEEN_NOSWAP;
>                 break;
>         case Opt_quota:
> +               if (fc->user_ns != &init_user_ns)
> +                       return invalfc(fc, "Quotas in unprivileged tmpfs mounts unsupported");
>                 ctx->seen |= SHMEM_SEEN_QUOTA;
>                 ctx->quota_types |= (QTYPE_MASK_USR | QTYPE_MASK_GRP);
>                 break;
>         case Opt_usrquota:
> +               if (fc->user_ns != &init_user_ns)
> +                       return invalfc(fc, "Quotas in unprivileged tmpfs mounts unsupported");
>                 ctx->seen |= SHMEM_SEEN_QUOTA;
>                 ctx->quota_types |= QTYPE_MASK_USR;
>                 break;
>         case Opt_grpquota:
> +               if (fc->user_ns != &init_user_ns)
> +                       return invalfc(fc, "Quotas in unprivileged tmpfs mounts unsupported");
>                 ctx->seen |= SHMEM_SEEN_QUOTA;
>                 ctx->quota_types |= QTYPE_MASK_GRP;
>                 break;
> 
> This exactly what we already to for the "noswap" option btw.
> 
> Could you fold these changes into the patch and resend, please?
> I synced with Andrew earlier and I'll be taking this series.

Thanks! I will sure do it, I'll update the patch, build, test and send it again
in a few minutes.

> 
> ---
> 
> And btw, the *_SEEN_* logic for mount options is broken - but that's not
> specific to your patch. Imagine:
> 
>         fd_fs = fsopen("tmpfs");
>         fsconfig(fd_fs, ..., "nr_inodes", 0, "1000") = 0
> 
> Now ctx->inodes == 1000 and ctx->seen |= SHMEM_SEEN_INODES.
> 
> Now the user does:
> 
>         fsconfig(fd_fs, ..., "nr_inodes", 0, "-1234") = -EINVAL
> 
> This fails, but:
> 
>         ctx->inodes = memparse(param->string, &rest);
>         if (*rest)
>                 goto bad_value;
> 
> will set ctx->inodes to whatever memparse returns but leaves
> SHMEM_SEEN_INODES raised in ctx->seen. Now superblock creation may
> succeed with a garbage inode limit. This should affect other mount
> options as well.

Interesting. Thanks for the heads up. I'll look in more details into it when I
start working for namespace support for quotas (as we spoke previously).

Cheers.

-- 
Carlos

Re: [PATCH 5/6] shmem: quota support

[Carlos Maiolino]

> >
> > @@ -3736,6 +3853,18 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
> >  		ctx->noswap = true;
> >  		ctx->seen |= SHMEM_SEEN_NOSWAP;
> >  		break;
> > +	case Opt_quota:
> > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > +		ctx->quota_types |= (QTYPE_MASK_USR | QTYPE_MASK_GRP);
> > +		break;
> > +	case Opt_usrquota:
> > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > +		ctx->quota_types |= QTYPE_MASK_USR;
> > +		break;
> > +	case Opt_grpquota:
> > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > +		ctx->quota_types |= QTYPE_MASK_GRP;
> > +		break;
> >  	}
> >  	return 0;
> 
> I mentioned this in an earlier review; following the sequence:
> 
> if (ctx->seen & SHMEM_SEEN_QUOTA)
> -> shmem_enable_quotas()
>    -> dquot_load_quota_sb()
> 
> to then figure out that in dquot_load_quota_sb() we fail if
> sb->s_user_ns != &init_user_ns is too subtle for a filesystem that's
> mountable by unprivileged users. Every few months someone will end up
> stumbling upon this code and wonder where it's blocked. There isn't even
> a comment in the code.

I was just going to rebase these updated changes on top of linux-next, and I
realized the patches are already there. Wouldn't it be better if I send a
follow-up patch on top of linux-next, applying these changes, as a Fixes: tag?

-- 
Carlos

> 
> Aside from that it's also really unfriendly to users because they may go
> through setting up a tmpfs instances in the following way:
> 
>         fd_fs = fsopen("tmpfs");
> 
> User now enables quota:
> 
>         fsconfig(fd_fs, ..., "quota", ...) = 0
> 
> and goes on to set a bunch of other options:
> 
>         fsconfig(fd_fs, ..., "inode64", ...) = 0
>         fsconfig(fd_fs, ..., "nr_inodes", ...) = 0
>         fsconfig(fd_fs, ..., "nr_blocks", ...) = 0
>         fsconfig(fd_fs, ..., "huge", ...) = 0
>         fsconfig(fd_fs, ..., "mode", ...) = 0
>         fsconfig(fd_fs, ..., "gid", ...) = 0
> 
> everything seems dandy and they create the superblock:
> 
>         fsconfig(fd_fs, FSCONFIG_CMD_CREATE, ...) = -EINVAL
> 
> which fails.
> 
> The user has not just performed 9 useless system calls they also have
> zero clue what mount option caused the failure.
> 
> What this code really really should do is fail at:
> 
>         fsconfig(fd_fs, ..., "quota", ...) = -EINVAL
> 
> and log an error that the user can retrieve from the fs context. IOW,
> 
> diff --git a/mm/shmem.c b/mm/shmem.c
> index 083ce6b478e7..baca8bf44569 100644
> --- a/mm/shmem.c
> +++ b/mm/shmem.c
> @@ -3863,14 +3863,20 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
>                 ctx->seen |= SHMEM_SEEN_NOSWAP;
>                 break;
>         case Opt_quota:
> +               if (fc->user_ns != &init_user_ns)
> +                       return invalfc(fc, "Quotas in unprivileged tmpfs mounts unsupported");
>                 ctx->seen |= SHMEM_SEEN_QUOTA;
>                 ctx->quota_types |= (QTYPE_MASK_USR | QTYPE_MASK_GRP);
>                 break;
>         case Opt_usrquota:
> +               if (fc->user_ns != &init_user_ns)
> +                       return invalfc(fc, "Quotas in unprivileged tmpfs mounts unsupported");
>                 ctx->seen |= SHMEM_SEEN_QUOTA;
>                 ctx->quota_types |= QTYPE_MASK_USR;
>                 break;
>         case Opt_grpquota:
> +               if (fc->user_ns != &init_user_ns)
> +                       return invalfc(fc, "Quotas in unprivileged tmpfs mounts unsupported");
>                 ctx->seen |= SHMEM_SEEN_QUOTA;
>                 ctx->quota_types |= QTYPE_MASK_GRP;
>                 break;
> 
> This exactly what we already to for the "noswap" option btw.
> 
> Could you fold these changes into the patch and resend, please?
> I synced with Andrew earlier and I'll be taking this series.
> 
> ---
> 
> And btw, the *_SEEN_* logic for mount options is broken - but that's not
> specific to your patch. Imagine:
> 
>         fd_fs = fsopen("tmpfs");
>         fsconfig(fd_fs, ..., "nr_inodes", 0, "1000") = 0
> 
> Now ctx->inodes == 1000 and ctx->seen |= SHMEM_SEEN_INODES.
> 
> Now the user does:
> 
>         fsconfig(fd_fs, ..., "nr_inodes", 0, "-1234") = -EINVAL
> 
> This fails, but:
> 
>         ctx->inodes = memparse(param->string, &rest);
>         if (*rest)
>                 goto bad_value;
> 
> will set ctx->inodes to whatever memparse returns but leaves
> SHMEM_SEEN_INODES raised in ctx->seen. Now superblock creation may
> succeed with a garbage inode limit. This should affect other mount
> options as well.

Re: [PATCH 5/6] shmem: quota support

[Christian Brauner]

On Fri, Jul 14, 2023 at 02:26:44PM +0200, Carlos Maiolino wrote:
> > >
> > > @@ -3736,6 +3853,18 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
> > >  		ctx->noswap = true;
> > >  		ctx->seen |= SHMEM_SEEN_NOSWAP;
> > >  		break;
> > > +	case Opt_quota:
> > > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > > +		ctx->quota_types |= (QTYPE_MASK_USR | QTYPE_MASK_GRP);
> > > +		break;
> > > +	case Opt_usrquota:
> > > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > > +		ctx->quota_types |= QTYPE_MASK_USR;
> > > +		break;
> > > +	case Opt_grpquota:
> > > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > > +		ctx->quota_types |= QTYPE_MASK_GRP;
> > > +		break;
> > >  	}
> > >  	return 0;
> > 
> > I mentioned this in an earlier review; following the sequence:
> > 
> > if (ctx->seen & SHMEM_SEEN_QUOTA)
> > -> shmem_enable_quotas()
> >    -> dquot_load_quota_sb()
> > 
> > to then figure out that in dquot_load_quota_sb() we fail if
> > sb->s_user_ns != &init_user_ns is too subtle for a filesystem that's
> > mountable by unprivileged users. Every few months someone will end up
> > stumbling upon this code and wonder where it's blocked. There isn't even
> > a comment in the code.
> 
> I was just going to rebase these updated changes on top of linux-next, and I
> realized the patches are already there. Wouldn't it be better if I send a
> follow-up patch on top of linux-next, applying these changes, as a Fixes: tag?

I would just resend and fold the fix into the patch. There's no good
reason to make this a separate patch imho.

Re: [PATCH 5/6] shmem: quota support

[Carlos Maiolino]

On Fri, Jul 14, 2023 at 03:48:12PM +0200, Christian Brauner wrote:
> On Fri, Jul 14, 2023 at 02:26:44PM +0200, Carlos Maiolino wrote:
> > > >
> > > > @@ -3736,6 +3853,18 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
> > > >  		ctx->noswap = true;
> > > >  		ctx->seen |= SHMEM_SEEN_NOSWAP;
> > > >  		break;
> > > > +	case Opt_quota:
> > > > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > > > +		ctx->quota_types |= (QTYPE_MASK_USR | QTYPE_MASK_GRP);
> > > > +		break;
> > > > +	case Opt_usrquota:
> > > > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > > > +		ctx->quota_types |= QTYPE_MASK_USR;
> > > > +		break;
> > > > +	case Opt_grpquota:
> > > > +		ctx->seen |= SHMEM_SEEN_QUOTA;
> > > > +		ctx->quota_types |= QTYPE_MASK_GRP;
> > > > +		break;
> > > >  	}
> > > >  	return 0;
> > >
> > > I mentioned this in an earlier review; following the sequence:
> > >
> > > if (ctx->seen & SHMEM_SEEN_QUOTA)
> > > -> shmem_enable_quotas()
> > >    -> dquot_load_quota_sb()
> > >
> > > to then figure out that in dquot_load_quota_sb() we fail if
> > > sb->s_user_ns != &init_user_ns is too subtle for a filesystem that's
> > > mountable by unprivileged users. Every few months someone will end up
> > > stumbling upon this code and wonder where it's blocked. There isn't even
> > > a comment in the code.
> >
> > I was just going to rebase these updated changes on top of linux-next, and I
> > realized the patches are already there. Wouldn't it be better if I send a
> > follow-up patch on top of linux-next, applying these changes, as a Fixes: tag?
> 
> I would just resend and fold the fix into the patch. There's no good
> reason to make this a separate patch imho.

sounds good. Thanks

[PATCH V5 0/6] shmem: Add user and group quota support for tmpfs

[cem]

From: Carlos Maiolino <cem@kernel.org>

Hello folks.

This updates the previous series, to improve error handling of
tmpfs quota options.

This new version changes only patch 5/6 "shmem: quota support", and it only adds
a conditional if fc->user_ns != &init_user_ns, so there isn't much logic change
on the overall patch.

This has also been sync'ed to today Linus's TOT, and they should apply cleanly on
top of that.

Honza, the overall logic isn't changed, but since there's new code in here, I opted
to remove your RwB from this patch, would you be so kind to RwB it again?

Christian, could you please also review this?

As before, details are within each patch.

The original cover-letter follows...

people have been asking for quota support in tmpfs many times in the past
mostly to avoid one malicious user, or misbehaving user/program to consume
all of the system memory. This has been partially solved with the size
mount option, but some problems still prevail.

One of the problems is the fact that /dev/shm is still generally unprotected
with this and another is administration overhead of managing multiple tmpfs
mounts and lack of more fine grained control.

Quota support can solve all these problems in a somewhat standard way
people are already familiar with from regular file systems. It can give us
more fine grained control over how much memory user/groups can consume.
Additionally it can also control number of inodes and with special quota
mount options introduced with a second patch we can set global limits
allowing us to replace the size mount option with quota entirely.

Currently the standard userspace quota tools (quota, xfs_quota) are only
using quotactl ioctl which is expecting a block device. I patched quota [1]
and xfs_quota [2] to use quotactl_fd in case we want to run the tools on
mount point directory to work nicely with tmpfs.

The implementation was tested on patched version of xfstests [3].

[1] https://github.com/lczerner/quota/tree/quotactl_fd_support
[2] https://github.com/lczerner/xfsprogs/tree/quotactl_fd_support
[3] https://github.com/lczerner/xfstests/tree/tmpfs_quota_support


Jan Kara (1):
  quota: Check presence of quota operation structures instead of
    ->quota_read and ->quota_write callbacks

Lukas Czerner (5):
  shmem: make shmem_inode_acct_block() return error
  shmem: make shmem_get_inode() return ERR_PTR instead of NULL
  shmem: prepare shmem quota infrastructure
  shmem: quota support
  Add default quota limit mount options

 Documentation/filesystems/tmpfs.rst |  31 ++
 fs/Kconfig                          |  12 +
 fs/quota/dquot.c                    |   2 +-
 include/linux/shmem_fs.h            |  28 ++
 include/uapi/linux/quota.h          |   1 +
 mm/Makefile                         |   2 +-
 mm/shmem.c                          | 465 +++++++++++++++++++++-------
 mm/shmem_quota.c                    | 350 +++++++++++++++++++++
 8 files changed, 783 insertions(+), 108 deletions(-)
 create mode 100644 mm/shmem_quota.c

Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
-- 
2.30.2

[PATCH 5/6] shmem: quota support

[cem]

From: Carlos Maiolino <cem@kernel.org>

Now the basic infra-structure is in place, enable quota support for tmpfs.

This offers user and group quotas to tmpfs (project quotas will be added
later). Also, as other filesystems, the tmpfs quota is not supported
within user namespaces yet, so idmapping is not translated.

Add Christian's suggestion

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
---
 Documentation/filesystems/tmpfs.rst |  15 +++
 include/linux/shmem_fs.h            |   8 ++
 mm/shmem.c                          | 186 ++++++++++++++++++++++++++--
 3 files changed, 201 insertions(+), 8 deletions(-)

diff --git a/Documentation/filesystems/tmpfs.rst b/Documentation/filesystems/tmpfs.rst
index f18f46be5c0c..0c7d8bd052f1 100644
--- a/Documentation/filesystems/tmpfs.rst
+++ b/Documentation/filesystems/tmpfs.rst
@@ -130,6 +130,21 @@ for emergency or testing purposes. The values you can set for shmem_enabled are:
     option, for testing
 ==  ============================================================
 
+tmpfs also supports quota with the following mount options
+
+========  =============================================================
+quota     User and group quota accounting and enforcement is enabled on
+          the mount. Tmpfs is using hidden system quota files that are
+          initialized on mount.
+usrquota  User quota accounting and enforcement is enabled on the
+          mount.
+grpquota  Group quota accounting and enforcement is enabled on the
+          mount.
+========  =============================================================
+
+Note that tmpfs quotas do not support user namespaces so no uid/gid
+translation is done if quotas are enabled inside user namespaces.
+
 tmpfs has a mount option to set the NUMA memory allocation policy for
 all files in that instance (if CONFIG_NUMA is enabled) - which can be
 adjusted on the fly via 'mount -o remount ...'
diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index 7abfaf70b58a..1a568a0f542f 100644
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -31,6 +31,9 @@ struct shmem_inode_info {
 	atomic_t		stop_eviction;	/* hold when working on inode */
 	struct timespec64	i_crtime;	/* file creation time */
 	unsigned int		fsflags;	/* flags for FS_IOC_[SG]ETFLAGS */
+#ifdef CONFIG_TMPFS_QUOTA
+	struct dquot		*i_dquot[MAXQUOTAS];
+#endif
 	struct inode		vfs_inode;
 };
 
@@ -184,4 +187,9 @@ extern int shmem_mfill_atomic_pte(pmd_t *dst_pmd,
 #define SHMEM_QUOTA_MAX_SPC_LIMIT 0x7fffffffffffffffLL /* 2^63-1 */
 #define SHMEM_QUOTA_MAX_INO_LIMIT 0x7fffffffffffffffLL
 
+#ifdef CONFIG_TMPFS_QUOTA
+extern const struct dquot_operations shmem_quota_operations;
+extern struct quota_format_type shmem_quota_format;
+#endif /* CONFIG_TMPFS_QUOTA */
+
 #endif
diff --git a/mm/shmem.c b/mm/shmem.c
index 2a7b8060b6f4..7c75f30309ff 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -78,6 +78,7 @@ static struct vfsmount *shm_mnt;
 #include <uapi/linux/memfd.h>
 #include <linux/rmap.h>
 #include <linux/uuid.h>
+#include <linux/quotaops.h>
 
 #include <linux/uaccess.h>
 
@@ -116,11 +117,13 @@ struct shmem_options {
 	int huge;
 	int seen;
 	bool noswap;
+	unsigned short quota_types;
 #define SHMEM_SEEN_BLOCKS 1
 #define SHMEM_SEEN_INODES 2
 #define SHMEM_SEEN_HUGE 4
 #define SHMEM_SEEN_INUMS 8
 #define SHMEM_SEEN_NOSWAP 16
+#define SHMEM_SEEN_QUOTA 32
 };
 
 #ifdef CONFIG_TMPFS
@@ -212,7 +215,16 @@ static inline int shmem_inode_acct_block(struct inode *inode, long pages)
 		if (percpu_counter_compare(&sbinfo->used_blocks,
 					   sbinfo->max_blocks - pages) > 0)
 			goto unacct;
+
+		err = dquot_alloc_block_nodirty(inode, pages);
+		if (err)
+			goto unacct;
+
 		percpu_counter_add(&sbinfo->used_blocks, pages);
+	} else {
+		err = dquot_alloc_block_nodirty(inode, pages);
+		if (err)
+			goto unacct;
 	}
 
 	return 0;
@@ -227,6 +239,8 @@ static inline void shmem_inode_unacct_blocks(struct inode *inode, long pages)
 	struct shmem_inode_info *info = SHMEM_I(inode);
 	struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb);
 
+	dquot_free_block_nodirty(inode, pages);
+
 	if (sbinfo->max_blocks)
 		percpu_counter_sub(&sbinfo->used_blocks, pages);
 	shmem_unacct_blocks(info->flags, pages);
@@ -255,6 +269,47 @@ bool vma_is_shmem(struct vm_area_struct *vma)
 static LIST_HEAD(shmem_swaplist);
 static DEFINE_MUTEX(shmem_swaplist_mutex);
 
+#ifdef CONFIG_TMPFS_QUOTA
+
+static int shmem_enable_quotas(struct super_block *sb,
+			       unsigned short quota_types)
+{
+	int type, err = 0;
+
+	sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NOLIST_DIRTY;
+	for (type = 0; type < SHMEM_MAXQUOTAS; type++) {
+		if (!(quota_types & (1 << type)))
+			continue;
+		err = dquot_load_quota_sb(sb, type, QFMT_SHMEM,
+					  DQUOT_USAGE_ENABLED |
+					  DQUOT_LIMITS_ENABLED);
+		if (err)
+			goto out_err;
+	}
+	return 0;
+
+out_err:
+	pr_warn("tmpfs: failed to enable quota tracking (type=%d, err=%d)\n",
+		type, err);
+	for (type--; type >= 0; type--)
+		dquot_quota_off(sb, type);
+	return err;
+}
+
+static void shmem_disable_quotas(struct super_block *sb)
+{
+	int type;
+
+	for (type = 0; type < SHMEM_MAXQUOTAS; type++)
+		dquot_quota_off(sb, type);
+}
+
+static struct dquot **shmem_get_dquots(struct inode *inode)
+{
+	return SHMEM_I(inode)->i_dquot;
+}
+#endif /* CONFIG_TMPFS_QUOTA */
+
 /*
  * shmem_reserve_inode() performs bookkeeping to reserve a shmem inode, and
  * produces a novel ino for the newly allocated inode.
@@ -361,7 +416,6 @@ static void shmem_recalc_inode(struct inode *inode)
 	freed = info->alloced - info->swapped - inode->i_mapping->nrpages;
 	if (freed > 0) {
 		info->alloced -= freed;
-		inode->i_blocks -= freed * BLOCKS_PER_PAGE;
 		shmem_inode_unacct_blocks(inode, freed);
 	}
 }
@@ -379,7 +433,6 @@ bool shmem_charge(struct inode *inode, long pages)
 
 	spin_lock_irqsave(&info->lock, flags);
 	info->alloced += pages;
-	inode->i_blocks += pages * BLOCKS_PER_PAGE;
 	shmem_recalc_inode(inode);
 	spin_unlock_irqrestore(&info->lock, flags);
 
@@ -395,7 +448,6 @@ void shmem_uncharge(struct inode *inode, long pages)
 
 	spin_lock_irqsave(&info->lock, flags);
 	info->alloced -= pages;
-	inode->i_blocks -= pages * BLOCKS_PER_PAGE;
 	shmem_recalc_inode(inode);
 	spin_unlock_irqrestore(&info->lock, flags);
 
@@ -1141,6 +1193,21 @@ static int shmem_setattr(struct mnt_idmap *idmap,
 		}
 	}
 
+	if (is_quota_modification(idmap, inode, attr)) {
+		error = dquot_initialize(inode);
+		if (error)
+			return error;
+	}
+
+	/* Transfer quota accounting */
+	if (i_uid_needs_update(idmap, attr, inode) ||
+	    i_gid_needs_update(idmap, attr, inode)) {
+		error = dquot_transfer(idmap, inode, attr);
+
+		if (error)
+			return error;
+	}
+
 	setattr_copy(idmap, inode, attr);
 	if (attr->ia_valid & ATTR_MODE)
 		error = posix_acl_chmod(idmap, dentry, inode->i_mode);
@@ -1187,6 +1254,10 @@ static void shmem_evict_inode(struct inode *inode)
 	WARN_ON(inode->i_blocks);
 	shmem_free_inode(inode->i_sb);
 	clear_inode(inode);
+#ifdef CONFIG_TMPFS_QUOTA
+	dquot_free_inode(inode);
+	dquot_drop(inode);
+#endif
 }
 
 static int shmem_find_swap_entries(struct address_space *mapping,
@@ -1986,7 +2057,6 @@ static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index,
 
 	spin_lock_irq(&info->lock);
 	info->alloced += folio_nr_pages(folio);
-	inode->i_blocks += (blkcnt_t)BLOCKS_PER_PAGE << folio_order(folio);
 	shmem_recalc_inode(inode);
 	spin_unlock_irq(&info->lock);
 	alloced = true;
@@ -2357,9 +2427,10 @@ static void shmem_set_inode_flags(struct inode *inode, unsigned int fsflags)
 #define shmem_initxattrs NULL
 #endif
 
-static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block *sb,
-				     struct inode *dir, umode_t mode, dev_t dev,
-				     unsigned long flags)
+static struct inode *__shmem_get_inode(struct mnt_idmap *idmap,
+					     struct super_block *sb,
+					     struct inode *dir, umode_t mode,
+					     dev_t dev, unsigned long flags)
 {
 	struct inode *inode;
 	struct shmem_inode_info *info;
@@ -2436,6 +2507,43 @@ static struct inode *shmem_get_inode(struct mnt_idmap *idmap, struct super_block
 	return inode;
 }
 
+#ifdef CONFIG_TMPFS_QUOTA
+static struct inode *shmem_get_inode(struct mnt_idmap *idmap,
+				     struct super_block *sb, struct inode *dir,
+				     umode_t mode, dev_t dev, unsigned long flags)
+{
+	int err;
+	struct inode *inode;
+
+	inode = __shmem_get_inode(idmap, sb, dir, mode, dev, flags);
+	if (IS_ERR(inode))
+		return inode;
+
+	err = dquot_initialize(inode);
+	if (err)
+		goto errout;
+
+	err = dquot_alloc_inode(inode);
+	if (err) {
+		dquot_drop(inode);
+		goto errout;
+	}
+	return inode;
+
+errout:
+	inode->i_flags |= S_NOQUOTA;
+	iput(inode);
+	return ERR_PTR(err);
+}
+#else
+static inline struct inode *shmem_get_inode(struct mnt_idmap *idmap,
+				     struct super_block *sb, struct inode *dir,
+				     umode_t mode, dev_t dev, unsigned long flags)
+{
+	return __shmem_get_inode(idmap, sb, dir, mode, dev, flags);
+}
+#endif /* CONFIG_TMPFS_QUOTA */
+
 #ifdef CONFIG_USERFAULTFD
 int shmem_mfill_atomic_pte(pmd_t *dst_pmd,
 			   struct vm_area_struct *dst_vma,
@@ -2538,7 +2646,6 @@ int shmem_mfill_atomic_pte(pmd_t *dst_pmd,
 
 	spin_lock_irq(&info->lock);
 	info->alloced++;
-	inode->i_blocks += BLOCKS_PER_PAGE;
 	shmem_recalc_inode(inode);
 	spin_unlock_irq(&info->lock);
 
@@ -3516,6 +3623,7 @@ static ssize_t shmem_listxattr(struct dentry *dentry, char *buffer, size_t size)
 
 static const struct inode_operations shmem_short_symlink_operations = {
 	.getattr	= shmem_getattr,
+	.setattr	= shmem_setattr,
 	.get_link	= simple_get_link,
 #ifdef CONFIG_TMPFS_XATTR
 	.listxattr	= shmem_listxattr,
@@ -3524,6 +3632,7 @@ static const struct inode_operations shmem_short_symlink_operations = {
 
 static const struct inode_operations shmem_symlink_inode_operations = {
 	.getattr	= shmem_getattr,
+	.setattr	= shmem_setattr,
 	.get_link	= shmem_get_link,
 #ifdef CONFIG_TMPFS_XATTR
 	.listxattr	= shmem_listxattr,
@@ -3623,6 +3732,9 @@ enum shmem_param {
 	Opt_inode32,
 	Opt_inode64,
 	Opt_noswap,
+	Opt_quota,
+	Opt_usrquota,
+	Opt_grpquota,
 };
 
 static const struct constant_table shmem_param_enums_huge[] = {
@@ -3645,6 +3757,11 @@ const struct fs_parameter_spec shmem_fs_parameters[] = {
 	fsparam_flag  ("inode32",	Opt_inode32),
 	fsparam_flag  ("inode64",	Opt_inode64),
 	fsparam_flag  ("noswap",	Opt_noswap),
+#ifdef CONFIG_TMPFS_QUOTA
+	fsparam_flag  ("quota",		Opt_quota),
+	fsparam_flag  ("usrquota",	Opt_usrquota),
+	fsparam_flag  ("grpquota",	Opt_grpquota),
+#endif
 	{}
 };
 
@@ -3736,6 +3853,24 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
 		ctx->noswap = true;
 		ctx->seen |= SHMEM_SEEN_NOSWAP;
 		break;
+	case Opt_quota:
+		if (fc->user_ns != &init_user_ns)
+			return invalfc(fc, "Quotas in unprivileged tmpfs mounts are unsupported");
+		ctx->seen |= SHMEM_SEEN_QUOTA;
+		ctx->quota_types |= (QTYPE_MASK_USR | QTYPE_MASK_GRP);
+		break;
+	case Opt_usrquota:
+		if (fc->user_ns != &init_user_ns)
+			return invalfc(fc, "Quotas in unprivileged tmpfs mounts are unsupported");
+		ctx->seen |= SHMEM_SEEN_QUOTA;
+		ctx->quota_types |= QTYPE_MASK_USR;
+		break;
+	case Opt_grpquota:
+		if (fc->user_ns != &init_user_ns)
+			return invalfc(fc, "Quotas in unprivileged tmpfs mounts are unsupported");
+		ctx->seen |= SHMEM_SEEN_QUOTA;
+		ctx->quota_types |= QTYPE_MASK_GRP;
+		break;
 	}
 	return 0;
 
@@ -3843,6 +3978,12 @@ static int shmem_reconfigure(struct fs_context *fc)
 		goto out;
 	}
 
+	if (ctx->seen & SHMEM_SEEN_QUOTA &&
+	    !sb_any_quota_loaded(fc->root->d_sb)) {
+		err = "Cannot enable quota on remount";
+		goto out;
+	}
+
 	if (ctx->seen & SHMEM_SEEN_HUGE)
 		sbinfo->huge = ctx->huge;
 	if (ctx->seen & SHMEM_SEEN_INUMS)
@@ -3934,6 +4075,9 @@ static void shmem_put_super(struct super_block *sb)
 {
 	struct shmem_sb_info *sbinfo = SHMEM_SB(sb);
 
+#ifdef CONFIG_TMPFS_QUOTA
+	shmem_disable_quotas(sb);
+#endif
 	free_percpu(sbinfo->ino_batch);
 	percpu_counter_destroy(&sbinfo->used_blocks);
 	mpol_put(sbinfo->mpol);
@@ -4013,6 +4157,17 @@ static int shmem_fill_super(struct super_block *sb, struct fs_context *fc)
 #endif
 	uuid_gen(&sb->s_uuid);
 
+#ifdef CONFIG_TMPFS_QUOTA
+	if (ctx->seen & SHMEM_SEEN_QUOTA) {
+		sb->dq_op = &shmem_quota_operations;
+		sb->s_qcop = &dquot_quotactl_sysfile_ops;
+		sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
+
+		if (shmem_enable_quotas(sb, ctx->quota_types))
+			goto failed;
+	}
+#endif /* CONFIG_TMPFS_QUOTA */
+
 	inode = shmem_get_inode(&nop_mnt_idmap, sb, NULL, S_IFDIR | sbinfo->mode, 0,
 				VM_NORESERVE);
 	if (IS_ERR(inode)) {
@@ -4188,6 +4343,9 @@ static const struct super_operations shmem_ops = {
 #ifdef CONFIG_TMPFS
 	.statfs		= shmem_statfs,
 	.show_options	= shmem_show_options,
+#endif
+#ifdef CONFIG_TMPFS_QUOTA
+	.get_dquots	= shmem_get_dquots,
 #endif
 	.evict_inode	= shmem_evict_inode,
 	.drop_inode	= generic_delete_inode,
@@ -4254,6 +4412,14 @@ void __init shmem_init(void)
 
 	shmem_init_inodecache();
 
+#ifdef CONFIG_TMPFS_QUOTA
+	error = register_quota_format(&shmem_quota_format);
+	if (error < 0) {
+		pr_err("Could not register quota format\n");
+		goto out3;
+	}
+#endif
+
 	error = register_filesystem(&shmem_fs_type);
 	if (error) {
 		pr_err("Could not register tmpfs\n");
@@ -4278,6 +4444,10 @@ void __init shmem_init(void)
 out1:
 	unregister_filesystem(&shmem_fs_type);
 out2:
+#ifdef CONFIG_TMPFS_QUOTA
+	unregister_quota_format(&shmem_quota_format);
+out3:
+#endif
 	shmem_destroy_inodecache();
 	shm_mnt = ERR_PTR(error);
 }
-- 
2.39.2