From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx125.postini.com [74.125.245.125]) by kanga.kvack.org (Postfix) with SMTP id 9FC3B6B0068 for ; Thu, 20 Sep 2012 14:55:00 -0400 (EDT) Message-ID: <505B6680.2000609@redhat.com> Date: Thu, 20 Sep 2012 14:54:56 -0400 From: Rik van Riel MIME-Version: 1.0 Subject: Re: [PATCH 4/6] Revert "mm: have order > 0 compaction start off where it left" References: <1348149875-29678-1-git-send-email-mgorman@suse.de> <1348149875-29678-5-git-send-email-mgorman@suse.de> In-Reply-To: <1348149875-29678-5-git-send-email-mgorman@suse.de> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman Cc: Richard Davies , Shaohua Li , Avi Kivity , QEMU-devel , KVM , Linux-MM , LKML On 09/20/2012 10:04 AM, Mel Gorman wrote: > This reverts commit 7db8889a (mm: have order > 0 compaction start off > where it left) and commit de74f1cc (mm: have order > 0 compaction start > near a pageblock with free pages). These patches were a good idea and > tests confirmed that they massively reduced the amount of scanning but > the implementation is complex and tricky to understand. A later patch > will cache what pageblocks should be skipped and reimplements the > concept of compact_cached_free_pfn on top for both migration and > free scanners. > > Signed-off-by: Mel Gorman Sure, it makes your next patches easier... Acked-by: Rik van Riel -- 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