From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754030AbaCTGjs (ORCPT ); Thu, 20 Mar 2014 02:39:48 -0400 Received: from lgeamrelo01.lge.com ([156.147.1.125]:56997 "EHLO LGEAMRELO01.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751475AbaCTGjo (ORCPT ); Thu, 20 Mar 2014 02:39:44 -0400 X-AuditID: 9c93017d-b7ceaae000000e36-dd-532a8d2cd85d From: Minchan Kim To: Andrew Morton Cc: Rik van Riel , Mel Gorman , Hugh Dickins , Dave Hansen , Johannes Weiner , KOSAKI Motohiro , linux-mm@kvack.org, linux-kernel@vger.kernel.org, John Stultz , Jason Evans , Minchan Kim Subject: [RFC v2 3/3] mm: deactivate lazyfree pages Date: Thu, 20 Mar 2014 15:38:58 +0900 Message-Id: <1395297538-10491-4-git-send-email-minchan@kernel.org> X-Mailer: git-send-email 1.9.0 In-Reply-To: <1395297538-10491-1-git-send-email-minchan@kernel.org> References: <1395297538-10491-1-git-send-email-minchan@kernel.org> X-Brightmail-Tracker: AAAAAA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org MADV_FREEed pages should be discarded before working set pages are reclaimed because most of users(ex, tcmalloc and jemalloc) have used it instead of MADV_DONTNEED which zap pages instantly. Signed-off-by: Minchan Kim --- mm/memory.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/memory.c b/mm/memory.c index 6f221225f62b..76b683e7d087 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1298,6 +1298,7 @@ static unsigned long lazyfree_pte_range(struct mmu_gather *tlb, ptent = pte_mkclean(ptent); set_pte_at(mm, addr, pte, ptent); tlb_remove_tlb_entry(tlb, pte, addr); + deactivate_page(page); } while (pte++, addr += PAGE_SIZE, addr != end); arch_leave_lazy_mmu_mode(); pte_unmap_unlock(start_pte, ptl); -- 1.9.0