lkml.org 
[lkml]   [2013]   [May]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2 10/10] af_unix: use freezable blocking calls in read
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@kernel.org>

Thanks.

--
tejun


\
 
 \ /
  Last update: 2013-05-03 03:21    [W:0.264 / U:0.148 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site