From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932144Ab0KCPix (ORCPT ); Wed, 3 Nov 2010 11:38:53 -0400 Received: from mx1.redhat.com ([209.132.183.28]:4259 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755870Ab0KCPaz (ORCPT ); Wed, 3 Nov 2010 11:30:55 -0400 Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [PATCH 52 of 66] enable direct defrag X-Mercurial-Node: db936dd7c1e500045f51ea0f7deccff86e76340d Message-Id: In-Reply-To: References: User-Agent: Mercurial-patchbomb/1.4.1 Date: Wed, 03 Nov 2010 16:28:27 +0100 From: Andrea Arcangeli To: linux-mm@kvack.org, Linus Torvalds , Andrew Morton , linux-kernel@vger.kernel.org Cc: Marcelo Tosatti , Adam Litke , Avi Kivity , Hugh Dickins , Rik van Riel , Mel Gorman , Dave Hansen , Benjamin Herrenschmidt , Ingo Molnar , Mike Travis , KAMEZAWA Hiroyuki , Christoph Lameter , Chris Wright , bpicco@redhat.com, KOSAKI Motohiro , Balbir Singh , "Michael S. Tsirkin" , Peter Zijlstra , Johannes Weiner , Daisuke Nishimura , Chris Mason , Borislav Petkov Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Andrea Arcangeli With memory compaction in, and lumpy-reclaim removed, it seems safe enough to defrag memory during the (synchronous) transparent hugepage page faults (TRANSPARENT_HUGEPAGE_DEFRAG_FLAG) and not only during khugepaged (async) hugepage allocations that was already enabled even before memory compaction was in (TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG). Signed-off-by: Andrea Arcangeli --- diff --git a/mm/huge_memory.c b/mm/huge_memory.c --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -28,6 +28,7 @@ */ unsigned long transparent_hugepage_flags __read_mostly = (1< Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with SMTP id 761096B00BE for ; Wed, 3 Nov 2010 11:30:36 -0400 (EDT) Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [PATCH 52 of 66] enable direct defrag Message-Id: In-Reply-To: References: Date: Wed, 03 Nov 2010 16:28:27 +0100 From: Andrea Arcangeli Sender: owner-linux-mm@kvack.org To: linux-mm@kvack.org, Linus Torvalds , Andrew Morton , linux-kernel@vger.kernel.org Cc: Marcelo Tosatti , Adam Litke , Avi Kivity , Hugh Dickins , Rik van Riel , Mel Gorman , Dave Hansen , Benjamin Herrenschmidt , Ingo Molnar , Mike Travis , KAMEZAWA Hiroyuki , Christoph Lameter , Chris Wright , bpicco@redhat.com, KOSAKI Motohiro , Balbir Singh , "Michael S. Tsirkin" , Peter Zijlstra , Johannes Weiner , Daisuke Nishimura , Chris Mason , Borislav Petkov List-ID: From: Andrea Arcangeli With memory compaction in, and lumpy-reclaim removed, it seems safe enough to defrag memory during the (synchronous) transparent hugepage page faults (TRANSPARENT_HUGEPAGE_DEFRAG_FLAG) and not only during khugepaged (async) hugepage allocations that was already enabled even before memory compaction was in (TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG). Signed-off-by: Andrea Arcangeli --- diff --git a/mm/huge_memory.c b/mm/huge_memory.c --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -28,6 +28,7 @@ */ unsigned long transparent_hugepage_flags __read_mostly = (1< email@kvack.org