From: Mel Gorman <mgorman@suse.de>
To: John Stultz <john.stultz@linaro.org>
Cc: linux-kernel@vger.kernel.org, Arve Hj?nnev?g <arve@android.com>,
Dave Hansen <dave@linux.vnet.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] mm: Check if any page in a pageblock is reserved before marking it MIGRATE_RESERVE
Date: Tue, 26 Apr 2011 08:34:10 +0100 [thread overview]
Message-ID: <20110426073410.GA4658@suse.de> (raw)
In-Reply-To: <1303436043-26644-1-git-send-email-john.stultz@linaro.org>
On Thu, Apr 21, 2011 at 06:34:03PM -0700, John Stultz wrote:
> From: Arve Hjønnevåg <arve@android.com>
>
> This fixes a problem where the first pageblock got marked MIGRATE_RESERVE even
> though it only had a few free pages. This in turn caused no contiguous memory
> to be reserved and frequent kswapd wakeups that emptied the caches to get more
> contiguous memory.
>
> CC: Dave Hansen <dave@linux.vnet.ibm.com>
> CC: Mel Gorman <mgorman@suse.de>
> CC: Andrew Morton <akpm@linux-foundation.org>
> Signed-off-by: Arve Hjønnevåg <arve@android.com>
> Acked-by: Mel Gorman <mel@csn.ul.ie>
>
> [This patch was submitted and acked a little over a year ago
> (see: http://lkml.org/lkml/2010/4/6/172 ), but never seemingly
> made it upstream. Resending for comments. -jstultz]
>
> Signed-off-by: John Stultz <john.stultz@linaro.org>
Whoops, should have spotted it slipped through. FWIW, I'm still happy
with my Ack being stuck onto it.
Thanks.
--
Mel Gorman
SUSE Labs
next prev parent reply other threads:[~2011-04-26 7:34 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-22 1:34 [PATCH] mm: Check if any page in a pageblock is reserved before marking it MIGRATE_RESERVE John Stultz
2011-04-22 16:02 ` Dave Hansen
2011-04-26 7:34 ` Mel Gorman [this message]
2011-04-26 9:49 ` KOSAKI Motohiro
2011-04-26 10:13 ` Mel Gorman
2011-04-26 17:51 ` John Stultz
-- strict thread matches above, loose matches on Subject: below --
2010-04-05 10:14 [Question] race condition in mm/page_alloc.c regarding page->lru? Mel Gorman
2010-04-06 3:09 ` [PATCH] mm: Check if any page in a pageblock is reserved before marking it MIGRATE_RESERVE Arve Hjønnevåg
2010-04-06 4:15 ` Minchan Kim
2010-04-06 15:11 ` Mel Gorman
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