mm-shrinkers-introduce-debugfs-interface-for-memory-shrinkers-fix

remove WARN_ON_ONCE(), per Roman

Reported-by: syzbot+300d27c79fe6d4cbcc39@syzkaller.appspotmail.com
Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 91232beffa630b6ad4f895b631b8ab88a2a70292..35dedff79eb4cf6b2443da9f7a1008312f773535 100644 (file)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -650,7 +650,7 @@ void register_shrinker_prepared(struct shrinker *shrinker)
        down_write(&shrinker_rwsem);
        list_add_tail(&shrinker->list, &shrinker_list);
        shrinker->flags |= SHRINKER_REGISTERED;
-       WARN_ON_ONCE(shrinker_debugfs_add(shrinker));
+       shrinker_debugfs_add(shrinker);
        up_write(&shrinker_rwsem);
 }