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switch fsnotify_move() to passing const struct qstr * for old_name 

note that in the second (RENAME_EXCHANGE) call of fsnotify_move() in
vfs_rename() the old_dentry->d_name is guaranteed to be unchanged
throughout the evaluation of fsnotify_move() (by the fact that the
parent directory is locked exclusive), so we don't need to fetch
old_dentry->d_name.name in the caller.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2019-04-26 13:21:24 -04:00
parent 230c6402b1
commit f4ec3a3d43
3 changed files with 5 additions and 5 deletions
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2
fs/debugfs/inode.c
View File

@ -819,7 +819,7 @@ struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
goto exit;
}
d_move(old_dentry, dentry);
fsnotify_move(d_inode(old_dir), d_inode(new_dir), old_name.name.name,
fsnotify_move(d_inode(old_dir), d_inode(new_dir), &old_name.name,
d_is_dir(old_dentry),
NULL, old_dentry);
release_dentry_name_snapshot(&old_name);

4
fs/namei.c
View File

@ -4498,10 +4498,10 @@ out:
inode_unlock(target);
dput(new_dentry);
if (!error) {
fsnotify_move(old_dir, new_dir, old_name.name.name, is_dir,
fsnotify_move(old_dir, new_dir, &old_name.name, is_dir,
!(flags & RENAME_EXCHANGE) ? target : NULL, old_dentry);
if (flags & RENAME_EXCHANGE) {
fsnotify_move(new_dir, old_dir, old_dentry->d_name.name,
fsnotify_move(new_dir, old_dir, &old_dentry->d_name,
new_is_dir, NULL, new_dentry);
}
}

4
include/linux/fsnotify.h
View File

@ -102,7 +102,7 @@ static inline void fsnotify_link_count(struct inode *inode)
* fsnotify_move - file old_name at old_dir was moved to new_name at new_dir
*/
static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
const unsigned char *old_name,
const struct qstr *old_name,
int isdir, struct inode *target,
struct dentry *moved)
{
@ -122,7 +122,7 @@ static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
mask |= FS_ISDIR;
}
fsnotify(old_dir, old_dir_mask, source, FSNOTIFY_EVENT_INODE, old_name,
fsnotify(old_dir, old_dir_mask, source, FSNOTIFY_EVENT_INODE, old_name->name,
fs_cookie);
fsnotify(new_dir, new_dir_mask, source, FSNOTIFY_EVENT_INODE, new_name,
fs_cookie);