From: Vivek Goyal <vgoyal@redhat.com>
To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org
Cc: vgoyal@redhat.com, miklos@szeredi.hu, stefanha@redhat.com,
dgilbert@redhat.com, sweil@redhat.com, swhiteho@redhat.com
Subject: [PATCH 14/52] fuse: add fuse_conn->dax_dev field
Date: Mon, 10 Dec 2018 12:12:40 -0500 [thread overview]
Message-ID: <20181210171318.16998-15-vgoyal@redhat.com> (raw)
In-Reply-To: <20181210171318.16998-1-vgoyal@redhat.com>
From: Stefan Hajnoczi <stefanha@redhat.com>
A struct dax_device instance is a prerequisite for the DAX filesystem
APIs. Let virtio_fs associate a dax_device with a fuse_conn. Classic
FUSE and CUSE set the pointer to NULL, disabling DAX.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
fs/fuse/cuse.c | 3 ++-
fs/fuse/fuse_i.h | 8 +++++++-
fs/fuse/inode.c | 9 ++++++---
fs/fuse/virtio_fs.c | 3 ++-
4 files changed, 17 insertions(+), 6 deletions(-)
diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c
index 98dc780cbafa..bf8c1c470e8c 100644
--- a/fs/fuse/cuse.c
+++ b/fs/fuse/cuse.c
@@ -503,7 +503,8 @@ static int cuse_channel_open(struct inode *inode, struct file *file)
* Limit the cuse channel to requests that can
* be represented in file->f_cred->user_ns.
*/
- fuse_conn_init(&cc->fc, file->f_cred->user_ns, &fuse_dev_fiq_ops, NULL);
+ fuse_conn_init(&cc->fc, file->f_cred->user_ns, NULL, &fuse_dev_fiq_ops,
+ NULL);
fud = fuse_dev_alloc(&cc->fc);
if (!fud) {
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index f463586f2c9e..b5a6a12e67d6 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -803,6 +803,9 @@ struct fuse_conn {
/** List of device instances belonging to this connection */
struct list_head devices;
+
+ /** DAX device, non-NULL if DAX is supported */
+ struct dax_device *dax_dev;
};
static inline struct fuse_conn *get_fuse_conn_super(struct super_block *sb)
@@ -1025,7 +1028,8 @@ struct fuse_conn *fuse_conn_get(struct fuse_conn *fc);
* Initialize fuse_conn
*/
void fuse_conn_init(struct fuse_conn *fc, struct user_namespace *user_ns,
- const struct fuse_iqueue_ops *fiq_ops, void *fiq_priv);
+ struct dax_device *dax_dev,
+ const struct fuse_iqueue_ops *fiq_ops, void *fiq_priv);
/**
* Release reference to fuse_conn
@@ -1045,12 +1049,14 @@ int parse_fuse_opt(char *opt, struct fuse_mount_data *d, int is_bdev,
* Fill in superblock and initialize fuse connection
* @sb: partially-initialized superblock to fill in
* @mount_data: mount parameters
+ * @dax_dev: DAX device, may be NULL
* @fiq_ops: fuse input queue operations
* @fiq_priv: device-specific state for fuse_iqueue
* @fudptr: fuse_dev pointer to fill in, should contain NULL on entry
*/
int fuse_fill_super_common(struct super_block *sb,
struct fuse_mount_data *mount_data,
+ struct dax_device *dax_dev,
const struct fuse_iqueue_ops *fiq_ops,
void *fiq_priv,
void **fudptr);
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 31bb817575c4..10e4a39318c4 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -600,7 +600,8 @@ static void fuse_pqueue_init(struct fuse_pqueue *fpq)
}
void fuse_conn_init(struct fuse_conn *fc, struct user_namespace *user_ns,
- const struct fuse_iqueue_ops *fiq_ops, void *fiq_priv)
+ struct dax_device *dax_dev,
+ const struct fuse_iqueue_ops *fiq_ops, void *fiq_priv)
{
memset(fc, 0, sizeof(*fc));
spin_lock_init(&fc->lock);
@@ -625,6 +626,7 @@ void fuse_conn_init(struct fuse_conn *fc, struct user_namespace *user_ns,
fc->attr_version = 1;
get_random_bytes(&fc->scramble_key, sizeof(fc->scramble_key));
fc->pid_ns = get_pid_ns(task_active_pid_ns(current));
+ fc->dax_dev = dax_dev;
fc->user_ns = get_user_ns(user_ns);
}
EXPORT_SYMBOL_GPL(fuse_conn_init);
@@ -1072,6 +1074,7 @@ EXPORT_SYMBOL_GPL(fuse_dev_free);
int fuse_fill_super_common(struct super_block *sb,
struct fuse_mount_data *mount_data,
+ struct dax_device *dax_dev,
const struct fuse_iqueue_ops *fiq_ops,
void *fiq_priv,
void **fudptr)
@@ -1122,7 +1125,7 @@ int fuse_fill_super_common(struct super_block *sb,
if (!fc)
goto err;
- fuse_conn_init(fc, sb->s_user_ns, fiq_ops, fiq_priv);
+ fuse_conn_init(fc, sb->s_user_ns, dax_dev, fiq_ops, fiq_priv);
fc->release = fuse_free_conn;
fud = fuse_dev_alloc(fc);
@@ -1233,7 +1236,7 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
(file->f_cred->user_ns != sb->s_user_ns))
goto err_fput;
- err = fuse_fill_super_common(sb, &d, &fuse_dev_fiq_ops, NULL,
+ err = fuse_fill_super_common(sb, &d, NULL, &fuse_dev_fiq_ops, NULL,
&file->private_data);
err_fput:
fput(file);
diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c
index fd914f2c6209..ba615ec2603e 100644
--- a/fs/fuse/virtio_fs.c
+++ b/fs/fuse/virtio_fs.c
@@ -844,7 +844,8 @@ static int virtio_fs_fill_super(struct super_block *sb, void *data,
/* TODO this sends FUSE_INIT and could cause hiprio or notifications
* virtqueue races since they haven't been set up yet!
*/
- err = fuse_fill_super_common(sb, &d, &virtio_fs_fiq_ops, fs,
+ err = fuse_fill_super_common(sb, &d, fs->dax_dev,
+ &virtio_fs_fiq_ops, fs,
(void **)&fs->vqs[2].fud);
if (err < 0)
goto err_fud;
--
2.13.6
next prev parent reply other threads:[~2018-12-10 17:16 UTC|newest]
Thread overview: 98+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-10 17:12 [PATCH 00/52] [RFC] virtio-fs: shared file system for virtual machines Vivek Goyal
2018-12-10 17:12 ` [PATCH 01/52] fuse: add skeleton virtio_fs.ko module Vivek Goyal
2018-12-10 17:12 ` [PATCH 02/52] fuse: add probe/remove virtio driver Vivek Goyal
2018-12-10 17:12 ` [PATCH 03/52] fuse: rely on mutex_unlock() barrier instead of fput() Vivek Goyal
2018-12-10 17:12 ` [PATCH 04/52] fuse: extract fuse_fill_super_common() Vivek Goyal
2018-12-10 17:12 ` [PATCH 05/52] virtio_fs: get mount working Vivek Goyal
2018-12-10 17:12 ` [PATCH 06/52] fuse: export fuse_end_request() Vivek Goyal
2018-12-10 17:12 ` [PATCH 07/52] fuse: export fuse_len_args() Vivek Goyal
2018-12-10 17:12 ` [PATCH 08/52] fuse: add fuse_iqueue_ops callbacks Vivek Goyal
2018-12-10 17:12 ` [PATCH 09/52] fuse: process requests queues Vivek Goyal
2018-12-10 17:12 ` [PATCH 10/52] fuse: export fuse_get_unique() Vivek Goyal
2018-12-10 17:12 ` [PATCH 11/52] fuse: implement FUSE_FORGET for virtio-fs Vivek Goyal
2018-12-10 17:12 ` [PATCH 12/52] virtio_fs: Set up dax_device Vivek Goyal
2018-12-10 17:12 ` [PATCH 13/52] dax: remove block device dependencies Vivek Goyal
2018-12-10 17:12 ` Vivek Goyal [this message]
2018-12-10 17:12 ` [PATCH 15/52] fuse: map virtio_fs DAX window BAR Vivek Goyal
2018-12-12 16:37 ` Christian Borntraeger
2018-12-13 11:55 ` Stefan Hajnoczi
2018-12-13 16:06 ` kbuild test robot
2018-12-13 19:55 ` Dan Williams
2018-12-13 20:09 ` Dr. David Alan Gilbert
2018-12-13 20:15 ` Dan Williams
2018-12-13 20:40 ` Vivek Goyal
2018-12-13 21:18 ` Vivek Goyal
2018-12-14 10:09 ` Dr. David Alan Gilbert
2018-12-10 17:12 ` [PATCH 16/52] virtio-fs: Add VIRTIO_PCI_CAP_SHARED_MEMORY_CFG and utility to find them Vivek Goyal
2018-12-12 16:36 ` [PATCH] virtio-fs: fix semicolon.cocci warnings kbuild test robot
2018-12-12 16:36 ` [PATCH 16/52] virtio-fs: Add VIRTIO_PCI_CAP_SHARED_MEMORY_CFG and utility to find them kbuild test robot
2018-12-10 17:12 ` [PATCH 17/52] virtio-fs: Retrieve shm capabilities for cache Vivek Goyal
2018-12-10 17:12 ` [PATCH 18/52] virtio-fs: Map cache using the values from the capabilities Vivek Goyal
2018-12-13 9:10 ` David Hildenbrand
2018-12-13 9:13 ` Dr. David Alan Gilbert
2018-12-13 9:34 ` David Hildenbrand
2018-12-13 10:00 ` Dr. David Alan Gilbert
2018-12-13 11:26 ` David Hildenbrand
2018-12-13 12:15 ` Dr. David Alan Gilbert
2018-12-13 12:24 ` David Hildenbrand
2018-12-13 12:38 ` Cornelia Huck
2018-12-14 13:44 ` Stefan Hajnoczi
2018-12-14 13:50 ` Cornelia Huck
2018-12-14 14:06 ` Dr. David Alan Gilbert
2018-12-17 11:25 ` Stefan Hajnoczi
2018-12-17 10:53 ` David Hildenbrand
2018-12-17 14:56 ` Stefan Hajnoczi
2018-12-18 17:13 ` Cornelia Huck
2018-12-18 17:25 ` David Hildenbrand
2019-01-02 10:24 ` Stefan Hajnoczi
2019-03-17 0:33 ` Liu Bo
2019-03-20 10:42 ` Dr. David Alan Gilbert
2019-03-17 0:35 ` [PATCH] virtio-fs: fix multiple tag support Liu Bo
2019-03-19 20:26 ` Vivek Goyal
2019-03-20 2:04 ` Liu Bo
2018-12-10 17:12 ` [PATCH 19/52] virito-fs: Make dax optional Vivek Goyal
2018-12-10 17:12 ` [PATCH 20/52] Limit number of pages returned by direct_access() Vivek Goyal
2018-12-10 17:12 ` [PATCH 21/52] fuse: Introduce fuse_dax_mapping Vivek Goyal
2018-12-10 17:12 ` [PATCH 22/52] Create a list of free memory ranges Vivek Goyal
2018-12-11 17:44 ` kbuild test robot
2018-12-15 19:22 ` kbuild test robot
2018-12-10 17:12 ` [PATCH 23/52] fuse: simplify fuse_fill_super_common() calling Vivek Goyal
2018-12-10 17:12 ` [PATCH 24/52] fuse: Introduce setupmapping/removemapping commands Vivek Goyal
2018-12-10 17:12 ` [PATCH 25/52] Introduce interval tree basic data structures Vivek Goyal
2018-12-10 17:12 ` [PATCH 26/52] fuse: Implement basic DAX read/write support commands Vivek Goyal
2018-12-10 17:12 ` [PATCH 27/52] fuse: Maintain a list of busy elements Vivek Goyal
2018-12-10 17:12 ` [PATCH 28/52] Do fallocate() to grow file before mapping for file growing writes Vivek Goyal
2018-12-11 6:13 ` kbuild test robot
2018-12-11 6:20 ` kbuild test robot
2018-12-10 17:12 ` [PATCH 29/52] fuse: add DAX mmap support Vivek Goyal
2018-12-10 17:12 ` [PATCH 30/52] fuse: delete dentry if timeout is zero Vivek Goyal
2018-12-10 17:12 ` [PATCH 31/52] dax: Pass dax_dev to dax_writeback_mapping_range() Vivek Goyal
2018-12-11 6:12 ` kbuild test robot
2018-12-11 17:38 ` kbuild test robot
2018-12-10 17:12 ` [PATCH 32/52] fuse: Define dax address space operations Vivek Goyal
2018-12-10 17:12 ` [PATCH 33/52] fuse, dax: Take ->i_mmap_sem lock during dax page fault Vivek Goyal
2018-12-10 17:13 ` [PATCH 34/52] fuse: Add logic to free up a memory range Vivek Goyal
2018-12-10 17:13 ` [PATCH 35/52] fuse: Add logic to do direct reclaim of memory Vivek Goyal
2018-12-10 17:13 ` [PATCH 36/52] fuse: Kick worker when free memory drops below 20% of total ranges Vivek Goyal
2018-12-10 17:13 ` [PATCH 37/52] fuse: multiplex cached/direct_io/dax file operations Vivek Goyal
2018-12-10 17:13 ` [PATCH 38/52] Dispatch FORGET requests later instead of dropping them Vivek Goyal
2018-12-10 17:13 ` [PATCH 39/52] Release file in process context Vivek Goyal
2018-12-10 17:13 ` [PATCH 40/52] fuse: Do not block on inode lock while freeing memory range Vivek Goyal
2018-12-10 17:13 ` [PATCH 41/52] fuse: Reschedule dax free work if too many EAGAIN attempts Vivek Goyal
2018-12-10 17:13 ` [PATCH 42/52] fuse: Wait for memory ranges to become free Vivek Goyal
2018-12-10 17:13 ` [PATCH 43/52] fuse: Take inode lock for dax inode truncation Vivek Goyal
2018-12-10 17:13 ` [PATCH 44/52] fuse: Clear setuid bit even in direct I/O path Vivek Goyal
2018-12-10 17:13 ` [PATCH 45/52] virtio: Free fuse devices on umount Vivek Goyal
2018-12-10 17:13 ` [PATCH 46/52] virtio-fs: Retrieve shm capabilities for version table Vivek Goyal
2018-12-10 17:13 ` [PATCH 47/52] virtio-fs: Map using the values from the capabilities Vivek Goyal
2018-12-10 17:13 ` [PATCH 48/52] virtio-fs: pass version table pointer to fuse Vivek Goyal
2018-12-10 17:13 ` [PATCH 49/52] fuse: don't crash if version table is NULL Vivek Goyal
2018-12-10 17:13 ` [PATCH 50/52] fuse: add shared version support (virtio-fs only) Vivek Goyal
2018-12-10 17:13 ` [PATCH 51/52] fuse: shared version cleanups Vivek Goyal
2018-12-10 17:13 ` [PATCH 52/52] fuse: fix fuse_permission() for the default_permissions case Vivek Goyal
2018-12-19 21:25 ` kbuild test robot
2018-12-11 12:54 ` [PATCH 00/52] [RFC] virtio-fs: shared file system for virtual machines Stefan Hajnoczi
2018-12-12 20:30 ` Konrad Rzeszutek Wilk
2018-12-12 21:22 ` Vivek Goyal
2019-02-12 15:56 ` Aneesh Kumar K.V
2019-02-12 18:57 ` Vivek Goyal
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