linux-kernel - Re: [patch 13/13] mm: memcontrol: rewrite uncharge API

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Date:	Fri, 20 Jun 2014 21:03:50 -0400
From:	Sasha Levin <sasha.levin@...cle.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...e.cz>, Hugh Dickins <hughd@...gle.com>,
	Tejun Heo <tj@...nel.org>,
	Vladimir Davydov <vdavydov@...allels.com>, linux-mm@...ck.org,
	cgroups@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [patch 13/13] mm: memcontrol: rewrite uncharge API

On 06/20/2014 08:56 PM, Andrew Morton wrote:
> On Fri, 20 Jun 2014 20:34:43 -0400 Sasha Levin <sasha.levin@...cle.com> wrote:
> 
>> I'm seeing the following when booting a VM, bisection pointed me to this
>> patch.
>>
>> [   32.830823] BUG: using __this_cpu_add() in preemptible [00000000] code: mkdir/8677
> 
> Thanks.  This one was fixed earlier today.

Thank Andrew. My first bisection attempt went sideways and ended up
pointing at "fs/mpage.c: forgotten WRITE_SYNC in case of data integrity write"
for some reason.

My attempt to understand what data integrity has to do cgroups was unfruitful :(


Thanks,
Sasha

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