From: Amir Goldstein <amir73il@gmail.com>
To: Christian Brauner <brauner@kernel.org>
Cc: Jan Kara <jack@suse.cz>, Miklos Szeredi <miklos@szeredi.hu>,
Christoph Hellwig <hch@lst.de>,
David Howells <dhowells@redhat.com>,
Al Viro <viro@zeniv.linux.org.uk>,
linux-fsdevel@vger.kernel.org, linux-unionfs@vger.kernel.org
Subject: [PATCH v5 1/5] fs: rename {vfs,kernel}_tmpfile_open()
Date: Thu, 15 Jun 2023 14:22:25 +0300 [thread overview]
Message-ID: <20230615112229.2143178-2-amir73il@gmail.com> (raw)
In-Reply-To: <20230615112229.2143178-1-amir73il@gmail.com>
Overlayfs and cachefiles use vfs_open_tmpfile() to open a tmpfile
without accounting for nr_files.
Rename this helper to kernel_tmpfile_open() to better reflect this
helper is used for kernel internal users.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
---
fs/cachefiles/namei.c | 6 +++---
fs/namei.c | 24 +++++++++++++-----------
fs/overlayfs/overlayfs.h | 5 +++--
include/linux/fs.h | 7 ++++---
4 files changed, 23 insertions(+), 19 deletions(-)
diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c
index 82219a8f6084..6c7d4e97c219 100644
--- a/fs/cachefiles/namei.c
+++ b/fs/cachefiles/namei.c
@@ -451,9 +451,9 @@ struct file *cachefiles_create_tmpfile(struct cachefiles_object *object)
ret = cachefiles_inject_write_error();
if (ret == 0) {
- file = vfs_tmpfile_open(&nop_mnt_idmap, &parentpath, S_IFREG,
- O_RDWR | O_LARGEFILE | O_DIRECT,
- cache->cache_cred);
+ file = kernel_tmpfile_open(&nop_mnt_idmap, &parentpath, S_IFREG,
+ O_RDWR | O_LARGEFILE | O_DIRECT,
+ cache->cache_cred);
ret = PTR_ERR_OR_ZERO(file);
}
if (ret) {
diff --git a/fs/namei.c b/fs/namei.c
index e4fe0879ae55..36e335c39c44 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3703,7 +3703,7 @@ static int vfs_tmpfile(struct mnt_idmap *idmap,
}
/**
- * vfs_tmpfile_open - open a tmpfile for kernel internal use
+ * kernel_tmpfile_open - open a tmpfile for kernel internal use
* @idmap: idmap of the mount the inode was found from
* @parentpath: path of the base directory
* @mode: mode of the new tmpfile
@@ -3714,24 +3714,26 @@ static int vfs_tmpfile(struct mnt_idmap *idmap,
* hence this is only for kernel internal use, and must not be installed into
* file tables or such.
*/
-struct file *vfs_tmpfile_open(struct mnt_idmap *idmap,
- const struct path *parentpath,
- umode_t mode, int open_flag, const struct cred *cred)
+struct file *kernel_tmpfile_open(struct mnt_idmap *idmap,
+ const struct path *parentpath,
+ umode_t mode, int open_flag,
+ const struct cred *cred)
{
struct file *file;
int error;
file = alloc_empty_file_noaccount(open_flag, cred);
- if (!IS_ERR(file)) {
- error = vfs_tmpfile(idmap, parentpath, file, mode);
- if (error) {
- fput(file);
- file = ERR_PTR(error);
- }
+ if (IS_ERR(file))
+ return file;
+
+ error = vfs_tmpfile(idmap, parentpath, file, mode);
+ if (error) {
+ fput(file);
+ file = ERR_PTR(error);
}
return file;
}
-EXPORT_SYMBOL(vfs_tmpfile_open);
+EXPORT_SYMBOL(kernel_tmpfile_open);
static int do_tmpfile(struct nameidata *nd, unsigned flags,
const struct open_flags *op,
diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h
index fcac4e2c56ab..6129f0984cf7 100644
--- a/fs/overlayfs/overlayfs.h
+++ b/fs/overlayfs/overlayfs.h
@@ -329,8 +329,9 @@ static inline struct file *ovl_do_tmpfile(struct ovl_fs *ofs,
struct dentry *dentry, umode_t mode)
{
struct path path = { .mnt = ovl_upper_mnt(ofs), .dentry = dentry };
- struct file *file = vfs_tmpfile_open(ovl_upper_mnt_idmap(ofs), &path, mode,
- O_LARGEFILE | O_WRONLY, current_cred());
+ struct file *file = kernel_tmpfile_open(ovl_upper_mnt_idmap(ofs), &path,
+ mode, O_LARGEFILE | O_WRONLY,
+ current_cred());
int err = PTR_ERR_OR_ZERO(file);
pr_debug("tmpfile(%pd2, 0%o) = %i\n", dentry, mode, err);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 21a981680856..62237beeac2a 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1672,9 +1672,10 @@ static inline int vfs_whiteout(struct mnt_idmap *idmap,
WHITEOUT_DEV);
}
-struct file *vfs_tmpfile_open(struct mnt_idmap *idmap,
- const struct path *parentpath,
- umode_t mode, int open_flag, const struct cred *cred);
+struct file *kernel_tmpfile_open(struct mnt_idmap *idmap,
+ const struct path *parentpath,
+ umode_t mode, int open_flag,
+ const struct cred *cred);
int vfs_mkobj(struct dentry *, umode_t,
int (*f)(struct dentry *, umode_t, void *),
--
2.34.1
next prev parent reply other threads:[~2023-06-15 11:22 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-15 11:22 [PATCH v5 0/5] Handle notifications on overlayfs fake path files Amir Goldstein
2023-06-15 11:22 ` Amir Goldstein [this message]
2023-06-16 7:04 ` [PATCH v5 1/5] fs: rename {vfs,kernel}_tmpfile_open() Christoph Hellwig
2023-06-15 11:22 ` [PATCH v5 2/5] fs: use a helper for opening kernel internal files Amir Goldstein
2023-06-16 7:06 ` Christoph Hellwig
2023-06-15 11:22 ` [PATCH v5 3/5] fs: move kmem_cache_zalloc() into alloc_empty_file*() helpers Amir Goldstein
2023-06-16 7:07 ` Christoph Hellwig
2023-06-15 11:22 ` [PATCH v5 4/5] fs: use backing_file container for internal files with "fake" f_path Amir Goldstein
2023-06-16 7:15 ` Christoph Hellwig
2023-06-16 7:44 ` Amir Goldstein
2023-06-15 11:22 ` [PATCH v5 5/5] ovl: enable fsnotify events on underlying real files Amir Goldstein
2023-06-20 10:57 ` [PATCH v5 0/5] Handle notifications on overlayfs fake path files Christian Brauner
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