inotify: Fix mask checks

The mask checks in inotify_update_existing_watch() and
inotify_new_watch() are useless because inotify_arg_to_mask() sets
FS_IN_IGNORED and FS_EVENT_ON_CHILD bits anyway.

Signed-off-by: Eric Paris <eparis@redhat.com>

diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
index c8203ce..7dc940c 100644 (file)
--- a/fs/notify/inotify/inotify_user.c
+++ b/fs/notify/inotify/inotify_user.c
@@ -566,7 +566,7 @@ static int inotify_update_existing_watch(struct fsnotify_group *group,
 
        /* don't allow invalid bits: we don't want flags set */
        mask = inotify_arg_to_mask(arg);
-       if (unlikely(!mask))
+       if (unlikely(!(mask & IN_ALL_EVENTS)))
                return -EINVAL;
 
        fsn_mark = fsnotify_find_inode_mark(group, inode);
@@ -624,7 +624,7 @@ static int inotify_new_watch(struct fsnotify_group *group,
 
        /* don't allow invalid bits: we don't want flags set */
        mask = inotify_arg_to_mask(arg);
-       if (unlikely(!mask))
+       if (unlikely(!(mask & IN_ALL_EVENTS)))
                return -EINVAL;
 
        tmp_i_mark = kmem_cache_alloc(inotify_inode_mark_cachep, GFP_KERNEL);