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| author | Al Viro <viro@zeniv.linux.org.uk> | 2023-03-16 07:34:34 +0900 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2023-04-20 22:37:05 -0400 |
| commit | 9bc37e04823b5280dd0f22b6680fc23fe81ca325 (patch) | |
| tree | 1245ba4968615c26a692b4d294acac30dd66db81 /include/linux/namei.h | |
| parent | 211db0ac9e3dc6c46f2dd53395b34d76af929faf (diff) | |
| download | linux-9bc37e04823b5280dd0f22b6680fc23fe81ca325.tar.gz linux-9bc37e04823b5280dd0f22b6680fc23fe81ca325.tar.bz2 linux-9bc37e04823b5280dd0f22b6680fc23fe81ca325.zip | |
fs: introduce lock_rename_child() helper
Pass the dentry of a source file and the dentry of a destination directory
to lock parent inodes for rename. As soon as this function returns,
->d_parent of the source file dentry is stable and inodes are properly
locked for calling vfs-rename. This helper is needed for ksmbd server.
rename request of SMB protocol has to rename an opened file, no matter
which directory it's in.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux/namei.h')
| -rw-r--r-- | include/linux/namei.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/namei.h b/include/linux/namei.h index ba9b32b4d1b0..5864e4d82e56 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -83,6 +83,7 @@ extern int follow_down(struct path *path, unsigned int flags); extern int follow_up(struct path *); extern struct dentry *lock_rename(struct dentry *, struct dentry *); +extern struct dentry *lock_rename_child(struct dentry *, struct dentry *); extern void unlock_rename(struct dentry *, struct dentry *); extern int __must_check nd_jump_link(const struct path *path); |