From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx167.postini.com [74.125.245.167]) by kanga.kvack.org (Postfix) with SMTP id 33D006B006E for ; Fri, 16 Nov 2012 11:09:06 -0500 (EST) Message-ID: <50A66513.3010900@redhat.com> Date: Fri, 16 Nov 2012 11:08:51 -0500 From: Rik van Riel MIME-Version: 1.0 Subject: Re: [PATCH 14/43] mm: mempolicy: Use _PAGE_NUMA to migrate pages References: <1353064973-26082-1-git-send-email-mgorman@suse.de> <1353064973-26082-15-git-send-email-mgorman@suse.de> In-Reply-To: <1353064973-26082-15-git-send-email-mgorman@suse.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman Cc: Peter Zijlstra , Andrea Arcangeli , Ingo Molnar , Johannes Weiner , Hugh Dickins , Thomas Gleixner , Linus Torvalds , Andrew Morton , Linux-MM , LKML On 11/16/2012 06:22 AM, Mel Gorman wrote: > Note: Based on "mm/mpol: Use special PROT_NONE to migrate pages" but > sufficiently different that the signed-off-bys were dropped > > Combine our previous _PAGE_NUMA, mpol_misplaced and migrate_misplaced_page() > pieces into an effective migrate on fault scheme. > > Note that (on x86) we rely on PROT_NONE pages being !present and avoid > the TLB flush from try_to_unmap(TTU_MIGRATION). This greatly improves the > page-migration performance. > > Based-on-work-by: Peter Zijlstra > Signed-off-by: Mel Gorman Reviewed-by: Rik van Riel (this is getting easier, I must have reviewed this code 4x now) -- All rights reversed -- 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