From: Rik van Riel <riel@redhat.com>
To: Minchan Kim <minchan.kim@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-mm <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
Ben Gamari <bgamari.foss@gmail.com>,
Wu Fengguang <fengguang.wu@intel.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Nick Piggin <npiggin@kernel.dk>, Mel Gorman <mel@csn.ul.ie>
Subject: Re: [PATCH v2 2/3] move ClearPageReclaim
Date: Sun, 28 Nov 2010 23:25:08 -0500 [thread overview]
Message-ID: <4CF32B24.50509@redhat.com> (raw)
In-Reply-To: <c3b1c78f0e2eba5dfebda7c363c4274e649ab36a.1290956059.git.minchan.kim@gmail.com>
On 11/28/2010 10:02 AM, Minchan Kim wrote:
> fe3cba17 added ClearPageReclaim into clear_page_dirty_for_io for
> preventing fast reclaiming readahead marker page.
>
> In this series, PG_reclaim is used by invalidated page, too.
> If VM find the page is invalidated and it's dirty, it sets PG_reclaim
> to reclaim asap. Then, when the dirty page will be writeback,
> clear_page_dirty_for_io will clear PG_reclaim unconditionally.
> It disturbs this serie's goal.
>
> I think it's okay to clear PG_readahead when the page is dirty, not
> writeback time. So this patch moves ClearPageReadahead.
> This patch needs Wu's opinion.
Acked-by: Rik van Riel <riel@redhat.com>
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next prev parent reply other threads:[~2010-11-29 4:25 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-28 15:02 [PATCH v2 1/3] deactivate invalidated pages Minchan Kim
2010-11-28 15:02 ` [PATCH v2 2/3] move ClearPageReclaim Minchan Kim
2010-11-29 4:25 ` Rik van Riel [this message]
2010-11-29 7:29 ` Wu Fengguang
2010-11-29 8:16 ` Minchan Kim
2010-11-29 8:26 ` Wu Fengguang
2010-11-28 15:02 ` [PATCH v2 3/3] Prevent promotion of page in madvise_dontneed Minchan Kim
2010-11-29 4:28 ` Rik van Riel
2010-11-29 4:30 ` Minchan Kim
2010-11-28 15:13 ` [PATCH v2 1/3] deactivate invalidated pages Minchan Kim
2010-11-28 19:02 ` Rik van Riel
2010-11-29 0:33 ` KOSAKI Motohiro
2010-11-29 1:58 ` Ben Gamari
2010-11-29 2:13 ` KOSAKI Motohiro
2010-11-29 2:26 ` Ben Gamari
2010-11-29 2:13 ` Minchan Kim
2010-11-29 2:35 ` KOSAKI Motohiro
2010-11-29 7:49 ` Wu Fengguang
2010-11-29 8:09 ` Minchan Kim
2010-11-29 12:07 ` Mel Gorman
2010-11-29 15:28 ` Minchan Kim
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