From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-f170.google.com (mail-pd0-f170.google.com [209.85.192.170]) by kanga.kvack.org (Postfix) with ESMTP id 39FD96B006C for ; Tue, 31 Mar 2015 18:11:55 -0400 (EDT) Received: by pdmh5 with SMTP id h5so21486389pdm.3 for ; Tue, 31 Mar 2015 15:11:55 -0700 (PDT) Received: from aserp1040.oracle.com (aserp1040.oracle.com. [141.146.126.69]) by mx.google.com with ESMTPS id hp5si21092326pbb.179.2015.03.31.15.11.53 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Tue, 31 Mar 2015 15:11:54 -0700 (PDT) From: Sasha Levin 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> In-Reply-To: <1427839895-16434-1-git-send-email-sasha.levin@oracle.com> References: <1427839895-16434-1-git-send-email-sasha.levin@oracle.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-kernel@vger.kernel.org Cc: mhocko@suse.cz, Sasha Levin , Andrew Morton , Mel Gorman , Vlastimil Babka , Johannes Weiner , David Rientjes , Joonsoo Kim , "open list:MEMORY MANAGEMENT" 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org