fsnotify: Remove useless list deletion and comment

After removing all the indirection it is clear that

hlist_del_init_rcu(&mark->obj_list);

in fsnotify_destroy_marks() is not needed as the mark gets removed from
the list shortly afterwards in fsnotify_destroy_mark() ->
fsnotify_detach_mark() -> fsnotify_detach_from_object(). Also there is
no problem with mark being visible on object list while we call
fsnotify_destroy_mark() as parallel destruction of marks from several
places is properly handled (as mentioned in the comment in
fsnotify_destroy_marks(). So just remove the list removal and also the
stale comment.

Reviewed-by: Miklos Szeredi <mszeredi@redhat.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 0 insertions, 6 deletions

diff --git a/fs/notify/mark.c b/fs/notify/mark.c
index 416ba91750a9..b5b641a2b557 100644
--- a/fs/notify/mark.c
+++ b/fs/notify/mark.c
@@ -620,12 +620,6 @@ void fsnotify_destroy_marks(struct fsnotify_mark_connector *conn)
                 }
                 mark = hlist_entry(conn->list.first, struct fsnotify_mark,
                                    obj_list);
-                /*
-                 * We don't update i_fsnotify_mask / mnt_fsnotify_mask here
-                 * since inode / mount is going away anyway. So just remove
-                 * mark from the list.
-                 */
-                hlist_del_init_rcu(&mark->obj_list);
                 fsnotify_get_mark(mark);
                 spin_unlock(lock);
                 fsnotify_destroy_mark(mark, mark->group);