From: Oleg Nesterov <oleg@tv-sign.ru>
To: Gautham R Shenoy <ego@in.ibm.com>
Cc: Andrew Morton <akpm@osdl.org>, Ingo Molnar <mingo@elte.hu>,
David Howells <dhowells@redhat.com>,
Christoph Hellwig <hch@infradead.org>,
linux-kernel@vger.kernel.org, dipankar@in.ibm.com,
vatsa@in.ibm.com
Subject: Re: [PATCH 3/2] fix flush_workqueue() vs CPU_DEAD race
Date: Wed, 3 Jan 2007 20:26:57 +0300 [thread overview]
Message-ID: <20070103172657.GA1597@tv-sign.ru> (raw)
In-Reply-To: <20070103151704.GA28195@in.ibm.com>
On 01/03, Gautham R Shenoy wrote:
>
> On Wed, Jan 03, 2007 at 07:34:59PM +0530, Gautham R Shenoy wrote:
> >
> > > handle-cpu_lock_acquire-and-cpu_lock_release-in-workqueue_cpu_callback.patch
> >
> > Again, this one ensures that workqueue_mutex is taken/released on
> > CPU_LOCK_ACQUIRE/CPU_LOCK_RELEASE events in the cpuhotplug callback
> > function. So this one is required, unless it conflicts with what Oleg
> > has posted. Will check that out tonite.
>
> We would still be needing this patch as it's complementing what Oleg has
> posted.
I thought that these patches don't depend on each other, flush_work/workueue
don't care where cpu-hotplug takes workqueue_mutex, in CPU_LOCK_ACQUIRE or in
CPU_UP_PREPARE case (or CPU_DEAD/CPU_LOCK_RELEASE for unlock).
Could you clarify? Just curious.
Oleg.
next prev parent reply other threads:[~2007-01-03 17:26 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-30 16:10 Oleg Nesterov
2007-01-03 0:27 ` Andrew Morton
2007-01-03 14:04 ` Gautham R Shenoy
2007-01-03 15:17 ` Gautham R Shenoy
2007-01-03 17:26 ` Oleg Nesterov [this message]
2007-01-04 4:30 ` Gautham R Shenoy
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