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fs: provide locked helper variant of close_fd_get_file()

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[ Upstream commit 53dec2ea74f2ef360e8455439be96a780baa6097 ]

Assumes current->files->file_lock is already held on invocation. Helps
the caller check the file before removing the fd, if it needs to.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jens Axboe
2021-01-19 15:41:52 -07:00
committed by Greg Kroah-Hartman
parent 57b2053036
commit d2136fc145
2 changed files with 32 additions and 17 deletions
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fs/internal.h
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@@ -134,6 +134,7 @@ extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
const char *, const struct open_flags *);
extern struct open_how build_open_how(int flags, umode_t mode);
extern int build_open_flags(const struct open_how *how, struct open_flags *op);
extern int __close_fd_get_file(unsigned int fd, struct file **res);
long do_sys_ftruncate(unsigned int fd, loff_t length, int small);
int chmod_common(const struct path *path, umode_t mode);