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fsnotify: add empty fsnotify_{unlink,rmdir}() hooks 

We would like to move fsnotify_nameremove() calls from d_delete()
into a higher layer where the hook makes more sense and so we can
consider every d_delete() call site individually.

Start by creating empty hook fsnotify_{unlink,rmdir}() and place
them in the proper VFS call sites.  After all d_delete() call sites
will be converted to use the new hook, the new hook will generate the
delete events and fsnotify_nameremove() hook will be removed.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Amir Goldstein 2019-05-26 17:34:02 +03:00 committed by Jan Kara
parent 0b3b094ac9
commit 116b9731ad
2 changed files with 28 additions and 0 deletions
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2
fs/namei.c
View File

@ -3883,6 +3883,7 @@ int vfs_rmdir(struct inode *dir, struct dentry *dentry)
dentry->d_inode->i_flags |= S_DEAD;
dont_mount(dentry);
detach_mounts(dentry);
fsnotify_rmdir(dir, dentry);
out:
inode_unlock(dentry->d_inode);
@ -3999,6 +4000,7 @@ int vfs_unlink(struct inode *dir, struct dentry *dentry, struct inode **delegate
if (!error) {
dont_mount(dentry);
detach_mounts(dentry);
fsnotify_unlink(dir, dentry);
}
}
}

26
include/linux/fsnotify.h
View File

@ -188,6 +188,19 @@ static inline void fsnotify_link(struct inode *dir, struct inode *inode, struct
fsnotify(dir, FS_CREATE, inode, FSNOTIFY_EVENT_INODE, &new_dentry->d_name, 0);
}
/*
* fsnotify_unlink - 'name' was unlinked
*
* Caller must make sure that dentry->d_name is stable.
*/
static inline void fsnotify_unlink(struct inode *dir, struct dentry *dentry)
{
/* Expected to be called before d_delete() */
WARN_ON_ONCE(d_is_negative(dentry));
/* TODO: call fsnotify_dirent() */
}
/*
* fsnotify_mkdir - directory 'name' was created
*/
@ -198,6 +211,19 @@ static inline void fsnotify_mkdir(struct inode *inode, struct dentry *dentry)
fsnotify_dirent(inode, dentry, FS_CREATE | FS_ISDIR);
}
/*
* fsnotify_rmdir - directory 'name' was removed
*
* Caller must make sure that dentry->d_name is stable.
*/
static inline void fsnotify_rmdir(struct inode *dir, struct dentry *dentry)
{
/* Expected to be called before d_delete() */
WARN_ON_ONCE(d_is_negative(dentry));
/* TODO: call fsnotify_dirent() */
}
/*
* fsnotify_access - file was read
*/