From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932228AbaFYOjw (ORCPT ); Wed, 25 Jun 2014 10:39:52 -0400 Received: from mx2.parallels.com ([199.115.105.18]:54136 "EHLO mx2.parallels.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932183AbaFYOjv (ORCPT ); Wed, 25 Jun 2014 10:39:51 -0400 From: Vladimir Davydov To: CC: , , , , , , , Subject: [PATCH] slab: document why cache can have no per cpu array on kfree Date: Wed, 25 Jun 2014 18:39:37 +0400 Message-ID: <1403707177-3740-1-git-send-email-vdavydov@parallels.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <20140624073840.GC4836@js1304-P5Q-DELUXE> References: <20140624073840.GC4836@js1304-P5Q-DELUXE> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Vladimir Davydov --- mm/slab.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/mm/slab.c b/mm/slab.c index 6009e44a4d1d..4cb2619277ff 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -3530,6 +3530,10 @@ static inline void __cache_free(struct kmem_cache *cachep, void *objp, kmemcheck_slab_free(cachep, objp, cachep->object_size); #ifdef CONFIG_MEMCG_KMEM + /* + * Per cpu arrays are disabled for dead memcg caches in order not to + * prevent self-destruction. + */ if (unlikely(!ac)) { int nodeid = page_to_nid(virt_to_page(objp)); -- 1.7.10.4