Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753528AbbFDNJG (ORCPT ); Thu, 4 Jun 2015 09:09:06 -0400 Received: from szxga03-in.huawei.com ([119.145.14.66]:15895 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753312AbbFDNJD (ORCPT ); Thu, 4 Jun 2015 09:09:03 -0400 Message-ID: <55704D15.3030309@huawei.com> Date: Thu, 4 Jun 2015 21:05:25 +0800 From: Xishi Qiu User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:12.0) Gecko/20120428 Thunderbird/12.0.1 MIME-Version: 1.0 To: Xishi Qiu , Andrew Morton , , Yinghai Lu , "H. Peter Anvin" , Thomas Gleixner , , Xiexiuqi , Hanjun Guo , "Luck, Tony" CC: Linux MM , LKML Subject: [RFC PATCH 12/12] mm: let slab/slub/slob use mirrored memory References: <55704A7E.5030507@huawei.com> In-Reply-To: <55704A7E.5030507@huawei.com> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.177.25.179] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020204.55704DE6.0224,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 2f199b09a54835de89fe7614e113b10b Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1812 Lines: 58 Add __GFP_MIRROR flag when allocate a new slab. Signed-off-by: Xishi Qiu --- mm/slab.c | 3 ++- mm/slob.c | 2 +- mm/slub.c | 2 +- 3 files changed, 4 insertions(+), 3 deletions(-) diff --git a/mm/slab.c b/mm/slab.c index 7eb38dd..3b3ef22 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -1594,7 +1594,8 @@ static struct page *kmem_getpages(struct kmem_cache *cachep, gfp_t flags, if (memcg_charge_slab(cachep, flags, cachep->gfporder)) return NULL; - page = alloc_pages_exact_node(nodeid, flags | __GFP_NOTRACK, cachep->gfporder); + page = alloc_pages_exact_node(nodeid, flags | __GFP_NOTRACK | __GFP_MIRROR, + cachep->gfporder); if (!page) { memcg_uncharge_slab(cachep, cachep->gfporder); slab_out_of_memory(cachep, flags, nodeid); diff --git a/mm/slob.c b/mm/slob.c index 4765f65..4ff9bde 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -452,7 +452,7 @@ __do_kmalloc_node(size_t size, gfp_t gfp, int node, unsigned long caller) if (likely(order)) gfp |= __GFP_COMP; - ret = slob_new_pages(gfp, order, node); + ret = slob_new_pages(gfp | __GFP_MIRROR, order, node); trace_kmalloc_node(caller, ret, size, PAGE_SIZE << order, gfp, node); diff --git a/mm/slub.c b/mm/slub.c index 54c0876..1219e33 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1315,7 +1315,7 @@ static inline struct page *alloc_slab_page(struct kmem_cache *s, struct page *page; int order = oo_order(oo); - flags |= __GFP_NOTRACK; + flags |= __GFP_NOTRACK | __GFP_MIRROR; if (memcg_charge_slab(s, flags, order)) return NULL; -- 2.0.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/