From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760386Ab3JPIpY (ORCPT ); Wed, 16 Oct 2013 04:45:24 -0400 Received: from LGEMRELSE6Q.lge.com ([156.147.1.121]:56697 "EHLO LGEMRELSE6Q.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757316Ab3JPIoZ (ORCPT ); Wed, 16 Oct 2013 04:44:25 -0400 X-AuditID: 9c930179-b7c78ae000003065-9c-525e51dfbb76 From: Joonsoo Kim To: Pekka Enberg Cc: Christoph Lameter , Andrew Morton , Joonsoo Kim , David Rientjes , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Wanpeng Li , Joonsoo Kim Subject: [PATCH v2 14/15] slab: remove useless statement for checking pfmemalloc Date: Wed, 16 Oct 2013 17:44:11 +0900 Message-Id: <1381913052-23875-15-git-send-email-iamjoonsoo.kim@lge.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1381913052-23875-1-git-send-email-iamjoonsoo.kim@lge.com> References: <1381913052-23875-1-git-send-email-iamjoonsoo.kim@lge.com> X-Brightmail-Tracker: AAAAAA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now, virt_to_page(page->s_mem) is same as the page, because slab use this structure for management. So remove useless statement. Signed-off-by: Joonsoo Kim diff --git a/mm/slab.c b/mm/slab.c index 0e7f2e7..fbb594f 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -750,9 +750,7 @@ static struct array_cache *alloc_arraycache(int node, int entries, static inline bool is_slab_pfmemalloc(struct page *page) { - struct page *mem_page = virt_to_page(page->s_mem); - - return PageSlabPfmemalloc(mem_page); + return PageSlabPfmemalloc(page); } /* Clears pfmemalloc_active if no slabs have pfmalloc set */ @@ -817,7 +815,7 @@ static void *__ac_get_obj(struct kmem_cache *cachep, struct array_cache *ac, n = cachep->node[numa_mem_id()]; if (!list_empty(&n->slabs_free) && force_refill) { struct page *page = virt_to_head_page(objp); - ClearPageSlabPfmemalloc(virt_to_head_page(page->s_mem)); + ClearPageSlabPfmemalloc(page); clear_obj_pfmemalloc(&objp); recheck_pfmemalloc_active(cachep, ac); return objp; @@ -850,8 +848,7 @@ static void *__ac_put_obj(struct kmem_cache *cachep, struct array_cache *ac, if (unlikely(pfmemalloc_active)) { /* Some pfmemalloc slabs exist, check if this is one */ struct page *page = virt_to_head_page(objp); - struct page *mem_page = virt_to_head_page(page->s_mem); - if (PageSlabPfmemalloc(mem_page)) + if (PageSlabPfmemalloc(page)) set_obj_pfmemalloc(&objp); } -- 1.7.9.5