From: Abel Wu <wuyun.wu@xxxxxxxxxx> The commit below is incomplete, as it didn't handle the add_full() part. commit a4d3f8916c65 ("slub: remove useless kmem_cache_debug() before remove_full()") Signed-off-by: Abel Wu <wuyun.wu@xxxxxxxxxx> --- mm/slub.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/mm/slub.c b/mm/slub.c index fe81773..0b021b7 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -2182,7 +2182,8 @@ static void deactivate_slab(struct kmem_cache *s, struct page *page, } } else { m = M_FULL; - if (kmem_cache_debug(s) && !lock) { +#ifdef CONFIG_SLUB_DEBUG + if (!lock) { lock = 1; /* * This also ensures that the scanning of full @@ -2191,6 +2192,7 @@ static void deactivate_slab(struct kmem_cache *s, struct page *page, */ spin_lock(&n->list_lock); } +#endif } if (l != m) { -- 1.8.3.1