diff options
| author | Al Viro | 2023-12-31 16:12:36 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2024-01-05 15:18:29 +0100 |
| commit | 6e99fbb4296ad0a2f8c6674246a345045ef1eccb (patch) | |
| tree | d4098e5d9a2839f2a8cc5aac3df95699ca86eddc /include/linux | |
| parent | 965eb8650737e626544f67545d597895f1ee252b (diff) | |
fs: introduce lock_rename_child() helper
[ Upstream commit 9bc37e04823b5280dd0f22b6680fc23fe81ca325 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/linux')
| -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 00fee52df842..2b66021c740d 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -81,6 +81,7 @@ extern int follow_down(struct path *); 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); |