From: Andrew Morton <akpm@linux-foundation.org>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Minchan Kim <minchan.kim@gmail.com>,
linux-kernel@vger.kernel.org,
David Rientjes <rientjes@google.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Rik van Riel <riel@redhat.com>, Oleg Nesterov <oleg@redhat.com>,
linux-mm <linux-mm@kvack.org>, Andrey Vagin <avagin@openvz.org>,
Hugh Dickins <hughd@google.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Nick Piggin <npiggin@kernel.dk>,
Johannes Weiner <hannes@cmpxchg.org>
Subject: Re: [PATCH 1/5] vmscan: remove all_unreclaimable check from direct reclaim path completely
Date: Wed, 23 Mar 2011 19:21:50 -0700 [thread overview]
Message-ID: <20110323192150.9895afe3.akpm@linux-foundation.org> (raw)
In-Reply-To: <20110324111200.1AF4.A69D9226@jp.fujitsu.com>
On Thu, 24 Mar 2011 11:11:46 +0900 (JST) KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> wrote:
> Subject: [PATCH] vmscan: remove all_unreclaimable check from direct reclaim path completely
zone.all_unreclaimable is there to prevent reclaim from wasting CPU
cycles scanning a zone which has no reclaimable pages. When originally
implemented it did this very well.
That you guys keep breaking it, or don't feel like improving it is not a
reason to remove it!
If the code is unneeded and the kernel now reliably solves this problem
by other means then this should have been fully explained in the
changelog, but it was not even mentioned.
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next prev parent reply other threads:[~2011-03-24 2:25 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20110314232156.0c363813.akpm@linux-foundation.org>
[not found] ` <20110315153801.3526.A69D9226@jp.fujitsu.com>
2011-03-22 11:04 ` [patch 0/5] oom: a few anti fork bomb patches KOSAKI Motohiro
2011-03-22 11:05 ` [PATCH 1/5] vmscan: remove all_unreclaimable check from direct reclaim path completely KOSAKI Motohiro
2011-03-22 14:49 ` Minchan Kim
2011-03-23 5:21 ` KOSAKI Motohiro
2011-03-23 6:59 ` Minchan Kim
2011-03-23 7:13 ` KOSAKI Motohiro
2011-03-23 8:24 ` Minchan Kim
2011-03-23 8:44 ` KOSAKI Motohiro
2011-03-23 9:02 ` Minchan Kim
2011-03-24 2:11 ` KOSAKI Motohiro
2011-03-24 2:21 ` Andrew Morton [this message]
2011-03-24 2:48 ` KOSAKI Motohiro
2011-03-24 3:04 ` Andrew Morton
2011-03-24 5:35 ` KOSAKI Motohiro
2011-03-24 4:19 ` Minchan Kim
2011-03-24 5:35 ` KOSAKI Motohiro
2011-03-24 5:53 ` Minchan Kim
2011-03-24 6:16 ` KOSAKI Motohiro
2011-03-24 6:32 ` Minchan Kim
2011-03-24 7:03 ` KOSAKI Motohiro
2011-03-24 7:25 ` Minchan Kim
2011-03-24 7:28 ` KOSAKI Motohiro
2011-03-24 7:34 ` Minchan Kim
2011-03-24 7:41 ` Minchan Kim
2011-03-24 7:43 ` KOSAKI Motohiro
2011-03-24 7:43 ` Minchan Kim
2011-03-23 7:41 ` KAMEZAWA Hiroyuki
2011-03-23 7:55 ` KOSAKI Motohiro
2011-03-22 11:06 ` [PATCH 2/5] Revert "oom: give the dying task a higher priority" KOSAKI Motohiro
2011-03-23 7:42 ` KAMEZAWA Hiroyuki
2011-03-23 13:40 ` Luis Claudio R. Goncalves
2011-03-24 0:06 ` KOSAKI Motohiro
2011-03-24 15:27 ` Minchan Kim
2011-03-28 9:48 ` KOSAKI Motohiro
2011-03-28 12:28 ` Minchan Kim
2011-03-28 9:51 ` Peter Zijlstra
2011-03-28 12:21 ` Minchan Kim
2011-03-28 12:28 ` Peter Zijlstra
2011-03-28 12:40 ` Minchan Kim
2011-03-28 13:10 ` Luis Claudio R. Goncalves
2011-03-28 13:18 ` Peter Zijlstra
2011-03-28 13:56 ` Luis Claudio R. Goncalves
2011-03-29 2:46 ` KOSAKI Motohiro
2011-03-28 13:48 ` Minchan Kim
2011-03-22 11:08 ` [PATCH 3/5] oom: create oom autogroup KOSAKI Motohiro
2011-03-22 23:21 ` Minchan Kim
2011-03-23 1:27 ` KOSAKI Motohiro
2011-03-23 2:41 ` Mike Galbraith
2011-03-22 11:08 ` [PATCH 4/5] mm: introduce wait_on_page_locked_killable KOSAKI Motohiro
2011-03-23 7:44 ` KAMEZAWA Hiroyuki
2011-03-24 15:04 ` Minchan Kim
2011-03-22 11:09 ` [PATCH 5/5] x86,mm: make pagefault killable KOSAKI Motohiro
2011-03-23 7:49 ` KAMEZAWA Hiroyuki
2011-03-23 8:09 ` KOSAKI Motohiro
2011-03-23 14:34 ` Linus Torvalds
2011-03-24 15:10 ` Minchan Kim
2011-03-24 17:13 ` Oleg Nesterov
2011-03-24 17:34 ` Linus Torvalds
2011-03-28 7:00 ` KOSAKI Motohiro
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