linux-kernel - Re: [PATCH] Accelerate OOM killing

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]

Date:	Thu, 24 Mar 2011 14:47:11 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Minchan Kim <minchan.kim@...il.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-mm <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Andrey Vagin <avagin@...nvz.org>
Subject: Re: [PATCH] Accelerate OOM killing

On Thu, 24 Mar 2011, Minchan Kim wrote:

> When I test Andrey's problem, I saw the livelock and sysrq-t says
> there are many tasks in cond_resched after try_to_free_pages.
> 
> If did_some_progress is false, cond_resched could delay oom killing so
> It might be killing another task.
> 
> This patch accelerates oom killing without unnecessary giving CPU
> to another task. It could help avoding unnecessary another task killing
> and livelock situation a litte bit.
> 
> Cc: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> Cc: Andrey Vagin <avagin@...nvz.org>
> Signed-off-by: Minchan Kim <minchan.kim@...il.com>

Acked-by: David Rientjes <rientjes@...gle.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/