linux-kernel - Re: [patch for-3.2-rc3] cpusets: stall when updating mems_allowed for mempolicy or disjoint nodemask

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 for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 24 Nov 2011 09:26:27 +0800
From:	Miao Xie <miaox@...fujitsu.com>
To:	David Rientjes <rientjes@...gle.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Paul Menage <paul@...lmenage.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [patch for-3.2-rc3] cpusets: stall when updating mems_allowed
 for mempolicy or disjoint nodemask

On Wed, 23 Nov 2011 14:26:40 -0800 (pst), David Rientjes wrote:
> On Wed, 23 Nov 2011, Miao Xie wrote:
> 
>> That nodemask is also protected by get_mems_allowed().
>>
> 
> So what's the problem with the patch? 

Memory compaction will see an empty nodemask and do nothing, and then
we may fail to get several contiguous pages.


> Can I add your acked-by?

Sure, no problem.
--
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/