From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753047AbbCaWMI (ORCPT ); Tue, 31 Mar 2015 18:12:08 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:50135 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752857AbbCaWMC (ORCPT ); Tue, 31 Mar 2015 18:12:02 -0400 From: Sasha Levin To: linux-kernel@vger.kernel.org Cc: mhocko@suse.cz, Sasha Levin , Andrew Morton , Mel Gorman , Vlastimil Babka , Johannes Weiner , David Rientjes , Joonsoo Kim , linux-mm@kvack.org (open list:MEMORY MANAGEMENT) Subject: [PATCH 2/2] mm: __free_pages batch up 0-order pages for freeing Date: Tue, 31 Mar 2015 18:11:33 -0400 Message-Id: <1427839895-16434-2-git-send-email-sasha.levin@oracle.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1427839895-16434-1-git-send-email-sasha.levin@oracle.com> References: <1427839895-16434-1-git-send-email-sasha.levin@oracle.com> X-Source-IP: userv0022.oracle.com [156.151.31.74] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Rather than calling free_hot_cold_page() for every page, batch them up in a list and pass them on to free_hot_cold_page_list(). This will let us defer them to a workqueue. Signed-off-by: Sasha Levin --- mm/page_alloc.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 812ca75..e58e795 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2997,12 +2997,16 @@ EXPORT_SYMBOL(get_zeroed_page); void __free_pages(struct page *page, unsigned int order) { + LIST_HEAD(hot_cold_pages); + if (put_page_testzero(page)) { if (order == 0) - free_hot_cold_page(page, false); + list_add(&page->lru, &hot_cold_pages); else __free_pages_ok(page, order); } + + free_hot_cold_page_list(&hot_cold_pages, false); } EXPORT_SYMBOL(__free_pages); -- 1.7.10.4