linux-kernel - Re: [PATCH 1/4] cpuset: convert callback

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:	Fri, 26 Sep 2014 10:44:47 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Vladimir Davydov <vdavydov@...allels.com>
cc:	linux-kernel@...r.kernel.org, Li Zefan <lizefan@...wei.com>,
	Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org
Subject: Re: [PATCH 1/4] cpuset: convert callback_mutex to a spinlock

On Fri, 26 Sep 2014, Vladimir Davydov wrote:

> The callback_mutex is only used to synchronize reads/updates of cpusets'
> flags and cpu/node masks. These operations should always proceed fast so
> there's no reason why we can't use a spinlock instead of the mutex.

Checked that and given the other restrictions already on the use of
callback_mutex this is to be expected.

Acked-by: Christoph Lameter <cl@...ux.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/