Re: [PATCH v2 10/10] af_unix: use freezable blocking calls in read

[Tejun Heo]

On Wed, May 01, 2013 at 06:35:08PM -0700, Colin Cross wrote:
> Avoid waking up every thread sleeping in read call on an AF_UNIX
> socket during suspend and resume by calling a freezable blocking
> call.  Previous patches modified the freezer to avoid sending
> wakeups to threads that are blocked in freezable blocking calls.
> 
> This call was selected to be converted to a freezable call because
> it doesn't hold any locks or release any resources when interrupted
> that might be needed by another freezing task or a kernel driver
> during suspend, and is a common site where idle userspace tasks are
> blocked.

Heh, so you are aware of the deadlock possibilities.  Good selection
of spots.  For all the conversion patches.

 Acked-by: Tejun Heo <tj@xxxxxxxxxx>

Thanks.

-- 
tejun
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