linux-kernel - Re: [PATCH 4/6] Revert "mm: have order > 0 compaction start off where it left"

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <505B6680.2000609@redhat.com>
Date:	Thu, 20 Sep 2012 14:54:56 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Mel Gorman <mgorman@...e.de>
CC:	Richard Davies <richard@...chsys.com>,
	Shaohua Li <shli@...nel.org>, Avi Kivity <avi@...hat.com>,
	QEMU-devel <qemu-devel@...gnu.org>, KVM <kvm@...r.kernel.org>,
	Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 4/6] Revert "mm: have order > 0 compaction start off where
 it left"

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 <mgorman@...e.de>

Sure, it makes your next patches easier...

Acked-by: Rik van Riel <riel@...hat.com>

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/