always perform cache_from_obj sanity checks

1 files changed, 0 insertions, 10 deletions

diff --git a/mm/slab.h b/mm/slab.h
index 7bb74447b..cc47f1e4a 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -209,16 +209,6 @@ static inline struct kmem_cache *cache_from_obj(struct kmem_cache *s, void *x)
 	struct kmem_cache *cachep;
 	struct page *page;
 
-	/*
-	 * When kmemcg is not being used, both assignments should return the
-	 * same value. but we don't want to pay the assignment price in that
-	 * case. If it is not compiled in, the compiler should be smart enough
-	 * to not do even the assignment. In that case, slab_equal_or_root
-	 * will also be a constant.
-	 */
-	if (!memcg_kmem_enabled() && !unlikely(s->flags & SLAB_DEBUG_FREE))
-		return s;
-
 	page = virt_to_head_page(x);
 	BUG_ON(!PageSlab(page));
 	cachep = page->slab_cache;