inotify: use fsnotify group lock helpers

inotify inode marks pin the inode so there is no need to set the
FSNOTIFY_GROUP_NOFS flag.

Link: https://lore.kernel.org/r/20220422120327.3459282-8-amir73il@gmail.com
Suggested-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220321112310.vpr7oxro2xkz5llh@quack3.lan/
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>

diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
index 146890e..ed42a18 100644 (file)
--- a/fs/notify/inotify/inotify_user.c
+++ b/fs/notify/inotify/inotify_user.c
@@ -640,13 +640,13 @@ static int inotify_update_watch(struct fsnotify_group *group, struct inode *inod
 {
        int ret = 0;
 
-       mutex_lock(&group->mark_mutex);
+       fsnotify_group_lock(group);
        /* try to update and existing watch with the new arg */
        ret = inotify_update_existing_watch(group, inode, arg);
        /* no mark present, try to add a new one */
        if (ret == -ENOENT)
                ret = inotify_new_watch(group, inode, arg);
-       mutex_unlock(&group->mark_mutex);
+       fsnotify_group_unlock(group);
 
        return ret;
 }