From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756325AbbHFWUd (ORCPT ); Thu, 6 Aug 2015 18:20:33 -0400 Received: from mail.kernel.org ([198.145.29.136]:40016 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755692AbbHFWSR (ORCPT ); Thu, 6 Aug 2015 18:18:17 -0400 Message-Id: <20150806221814.310379886@goodmis.org> User-Agent: quilt/0.61-1 Date: Thu, 06 Aug 2015 18:17:37 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org, linux-rt-users Cc: Thomas Gleixner , Carsten Emde , Sebastian Andrzej Siewior , John Kacur , Paul Gortmaker , Subject: [PATCH RT 1/6] Revert "slub: delay ctor until the object is requested" References: <20150806221736.555188732@goodmis.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Disposition: inline; filename=0001-Revert-slub-delay-ctor-until-the-object-is-requested.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.14.48-rt49-rc1 stable review patch. If anyone has any objections, please let me know. ------------------ From: Sebastian Andrzej Siewior This approach is broken with SLAB_DESTROY_BY_RCU allocations. Reported by Steven Rostedt and Koehrer Mathias. Cc: stable-rt@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Steven Rostedt --- mm/slub.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/mm/slub.c b/mm/slub.c index 93eeaca6cb53..5b0e9ee52f79 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1403,10 +1403,8 @@ static void setup_object(struct kmem_cache *s, struct page *page, void *object) { setup_object_debug(s, page, object); -#ifndef CONFIG_PREEMPT_RT_FULL if (unlikely(s->ctor)) s->ctor(object); -#endif } static struct page *new_slab(struct kmem_cache *s, gfp_t flags, int node) @@ -2519,10 +2517,6 @@ redo: if (unlikely(gfpflags & __GFP_ZERO) && object) memset(object, 0, s->object_size); -#ifdef CONFIG_PREEMPT_RT_FULL - if (unlikely(s->ctor) && object) - s->ctor(object); -#endif slab_post_alloc_hook(s, gfpflags, object); -- 2.1.4