Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756080Ab3J1LnQ (ORCPT ); Mon, 28 Oct 2013 07:43:16 -0400 Received: from mail-pd0-f175.google.com ([209.85.192.175]:47497 "EHLO mail-pd0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754908Ab3J1LnP (ORCPT ); Mon, 28 Oct 2013 07:43:15 -0400 From: zhang.mingjun@linaro.org To: minchan@kernel.org, m.szyprowski@samsung.com, akpm@linux-foundation.org, mgorman@suse.de, haojian.zhuang@linaro.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Mingjun Zhang Subject: [PATCH] mm: cma: free cma page to buddy instead of being cpu hot page Date: Mon, 28 Oct 2013 19:42:49 +0800 Message-Id: <1382960569-6564-1-git-send-email-zhang.mingjun@linaro.org> X-Mailer: git-send-email 1.7.9.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1133 Lines: 33 From: Mingjun Zhang free_contig_range frees cma pages one by one and MIGRATE_CMA pages will be used as MIGRATE_MOVEABLE pages in the pcp list, it causes unnecessary migration action when these pages reused by CMA. Signed-off-by: Mingjun Zhang --- mm/page_alloc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 0ee638f..84b9d84 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1362,7 +1362,8 @@ void free_hot_cold_page(struct page *page, int cold) * excessively into the page allocator */ if (migratetype >= MIGRATE_PCPTYPES) { - if (unlikely(is_migrate_isolate(migratetype))) { + if (unlikely(is_migrate_isolate(migratetype)) + || is_migrate_cma(migratetype)) free_one_page(zone, page, 0, migratetype); goto out; } -- 1.7.9.5 -- 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/