From: Paul Jackson <pj@sgi.com>
To: Srivatsa Vaddagiri <vatsa@in.ibm.com>
Cc: balbir@in.ibm.com, akpm@linux-foundation.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Fix race between attach_task and cpuset_exit
Date: Tue, 27 Mar 2007 01:45:24 -0700 [thread overview]
Message-ID: <20070327014524.e4177467.pj@sgi.com> (raw)
In-Reply-To: <20070327023559.y7gvoty7ksg4kw44@imap.linux.ibm.com>
> Yes, but the cpuset is not made invisible to userspace (in filesystem)
> yet. So as cpuset_exit() discovers that cpuset B has zero refcount now
> and blocks on mutex_lock(&manage_mutex) [ to do a check_for_release
> later ], someone could have done a attach_task to that cpuset.
Agreed.
--
I won't rest till it's the best ...
Programmer, Linux Scalability
Paul Jackson <pj@sgi.com> 1.925.600.0401
next prev parent reply other threads:[~2007-03-27 8:45 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-25 16:47 [PATCH] Fix race between attach_task and cpuset_exit Srivatsa Vaddagiri
2007-03-25 17:52 ` Balbir Singh
2007-03-25 19:54 ` Paul Jackson
2007-03-26 11:50 ` Srivatsa Vaddagiri
2007-03-26 17:58 ` Paul Jackson
2007-03-27 6:35 ` Srivatsa Vaddagiri
2007-03-27 8:45 ` Paul Jackson [this message]
2007-03-26 18:30 ` Paul Jackson
2007-03-25 19:50 ` Paul Jackson
2007-03-26 11:55 ` Srivatsa Vaddagiri
2007-04-05 5:55 ` Paul Menage
2007-04-05 7:00 ` Srivatsa Vaddagiri
2007-04-05 7:01 ` Paul Menage
2007-04-05 8:14 ` Srivatsa Vaddagiri
2007-04-05 8:10 ` Paul Menage
2007-04-10 17:12 ` Srivatsa Vaddagiri
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