From: Andrew Morton <akpm@linux-foundation.org>
To: David Rientjes <rientjes@google.com>
Cc: gregkh@suse.de, npiggin@suse.de, mel@csn.ul.ie,
a.p.ziljstra@chello.nl, cl@linux-foundation.org,
dave@linux.vnet.ibm.com, san@android.com, arve@android.com,
linux-kernel@vger.kernel.org
Subject: Re: [patch 10/11 -mmotm] oom: avoid oom kill if no interruptible tasks
Date: Mon, 11 May 2009 14:39:06 -0700 [thread overview]
Message-ID: <20090511143906.1cde5f6e.akpm@linux-foundation.org> (raw)
In-Reply-To: <alpine.DEB.2.00.0905101502470.18804@chino.kir.corp.google.com>
On Sun, 10 May 2009 15:07:25 -0700 (PDT)
David Rientjes <rientjes@google.com> wrote:
> If there are no interruptible system tasks other than kthreads,
It's unclear what the term "system task" means. Just "task"?
> no task
> should be chosen for oom kill since they won't respond to the SIGKILL
> anyway. Instead, we choose to simply fail page allocations if reclaim
> cannot free memory and hope for the best.
But plain old user processes enter and leave D state all the time. The
task may well just be sitting there waiting for a disk read to
complete. It will respond to the SIGKILL shortly after the IO
completes, so an appropriate action here is to just wait for that to
happen.
next prev parent reply other threads:[~2009-05-11 21:44 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-10 22:07 [patch 01/11 -mmotm] lowmemorykiller: Only iterate over process list when needed David Rientjes
2009-05-10 22:07 ` [patch 02/11 -mmotm] lowmemorykiller: Don't count free space unless it meets the specified limit by itself David Rientjes
2009-05-12 9:23 ` Mel Gorman
2009-05-13 0:27 ` Arve Hjønnevåg
2009-05-13 9:42 ` Mel Gorman
2009-05-14 23:25 ` Arve Hjønnevåg
2009-05-15 9:18 ` Mel Gorman
2009-05-10 22:07 ` [patch 03/11 -mmotm] oom: cleanup android low memory killer David Rientjes
2009-05-10 22:07 ` [patch 04/11 -mmotm] oom: fix possible android low memory killer NULL pointer David Rientjes
2009-05-10 22:07 ` [patch 05/11 -mmotm] oom: fix possible oom_dump_tasks " David Rientjes
2009-05-11 21:11 ` Andrew Morton
2009-05-11 21:28 ` David Rientjes
2009-05-11 21:41 ` Greg KH
2009-05-11 22:05 ` David Rientjes
2009-05-12 9:38 ` Mel Gorman
2009-05-10 22:07 ` [patch 06/11 -mmotm] oom: move oom_adj value from task_struct to mm_struct David Rientjes
2009-05-11 0:17 ` KOSAKI Motohiro
2009-05-11 0:26 ` David Rientjes
2009-05-11 1:47 ` KOSAKI Motohiro
2009-05-11 8:43 ` David Rientjes
2009-05-11 21:19 ` Andrew Morton
2009-05-12 9:56 ` Mel Gorman
2009-05-10 22:07 ` [patch 07/11 -mmotm] oom: prevent possible OOM_DISABLE livelock David Rientjes
2009-05-11 21:22 ` Andrew Morton
2009-05-10 22:07 ` [patch 08/11 -mmotm] oom: invoke oom killer for __GFP_NOFAIL David Rientjes
2009-05-10 23:59 ` KOSAKI Motohiro
2009-05-11 0:24 ` David Rientjes
2009-05-11 1:45 ` KOSAKI Motohiro
2009-05-11 7:40 ` Minchan Kim
2009-05-11 8:49 ` David Rientjes
2009-05-11 11:23 ` Minchan Kim
2009-05-11 8:45 ` David Rientjes
2009-05-11 16:03 ` Dave Hansen
2009-05-11 19:09 ` David Rientjes
2009-05-11 19:45 ` Dave Hansen
2009-05-11 20:21 ` David Rientjes
2009-05-11 21:29 ` Andrew Morton
2009-05-11 21:45 ` David Rientjes
2009-05-11 22:11 ` Andrew Morton
2009-05-11 22:31 ` David Rientjes
2009-05-11 22:46 ` Andrew Morton
2009-05-11 23:00 ` David Rientjes
2009-05-11 23:14 ` Andrew Morton
2009-05-11 23:37 ` David Rientjes
2009-05-12 5:39 ` Peter Zijlstra
2009-05-12 11:36 ` KOSAKI Motohiro
2009-05-12 10:05 ` Mel Gorman
2009-05-10 22:07 ` [patch 09/11 -mmotm] oom: return vm size of oom killed task David Rientjes
2009-05-11 21:36 ` Andrew Morton
2009-05-10 22:07 ` [patch 10/11 -mmotm] oom: avoid oom kill if no interruptible tasks David Rientjes
2009-05-11 21:39 ` Andrew Morton [this message]
2009-05-11 23:08 ` David Rientjes
2009-05-10 22:07 ` [patch 11/11 -mmotm] oom: fail allocations if oom killer can't free memory David Rientjes
2009-05-12 21:14 ` Misleading OOM messages Christoph Lameter
2009-05-14 9:29 ` Pavel Machek
2009-05-14 19:46 ` Christoph Lameter
2009-05-14 20:38 ` Dave Hansen
2009-05-14 20:49 ` Christoph Lameter
2009-05-14 20:49 ` David Rientjes
2009-05-14 21:05 ` Dave Hansen
2009-05-14 21:12 ` David Rientjes
2009-05-14 21:30 ` Christoph Lameter
2009-05-14 21:34 ` Pavel Machek
2009-05-14 21:41 ` Dave Hansen
2009-05-15 13:05 ` Pavel Machek
2009-05-15 17:59 ` Christoph Lameter
2009-05-15 18:22 ` Dave Hansen
2009-05-15 19:29 ` Christoph Lameter
2009-05-15 20:02 ` Pavel Machek
2009-05-15 21:15 ` Christoph Lameter
2009-05-19 20:39 ` Pavel Machek
2009-05-22 13:53 ` Christoph Lameter
2009-05-22 14:17 ` Warn when we run out of swap space (was Re: Misleading OOM messages) Christoph Lameter
2009-05-22 14:56 ` Pavel Machek
2009-05-22 19:01 ` Misleading OOM messages Christoph Lameter
2009-05-22 19:40 ` Randy Dunlap
2009-05-22 19:44 ` Christoph Lameter
2009-05-22 21:45 ` Alan Cox
2009-05-22 21:43 ` Alan Cox
2009-05-15 17:57 ` Christoph Lameter
2009-05-15 18:15 ` Dave Hansen
2009-05-15 18:19 ` Balbir Singh
2009-05-15 19:26 ` Christoph Lameter
2009-05-15 20:31 ` Balbir Singh
2009-05-18 14:34 ` Christoph Lameter
2009-05-18 15:45 ` Balbir Singh
2009-05-14 21:37 ` Dave Hansen
2009-05-14 22:00 ` David Rientjes
2009-05-15 17:58 ` Christoph Lameter
2009-05-15 18:23 ` Dave Hansen
2009-05-15 18:57 ` Balbir Singh
2009-05-15 19:37 ` David Rientjes
2009-05-14 20:56 ` Pavel Machek
2009-05-12 9:09 ` [patch 01/11 -mmotm] lowmemorykiller: Only iterate over process list when needed Mel Gorman
2009-05-13 0:43 ` Arve Hjønnevåg
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