linux-kernel - Re: [PATCH 2/2 block/for-linus] writeback: don't drain bdi_writeback

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Message-ID: <559544D4.9010803@kernel.dk>
Date:	Thu, 02 Jul 2015 08:04:04 -0600
From:	Jens Axboe <axboe@...nel.dk>
To:	Jon Christopherson <jon@...s.org>, Tejun Heo <tj@...nel.org>
CC:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2 block/for-linus] writeback: don't drain bdi_writeback_congested
 on bdi destruction

On 07/01/2015 09:02 PM, Jon Christopherson wrote:
>
>
> On 07/01/2015 07:53 PM, Tejun Heo wrote:
>> 52ebea749aae ("writeback: make backing_dev_info host cgroup-specific
>> bdi_writebacks") made bdi (backing_dev_info) host per-cgroup wb's
>> (bdi_writeback's).  As the congested state needs to be per-wb and
>> referenced from blkcg side and multiple wbs, the patch made all
>> non-root cong's (bdi_writeback_congested's) reference counted and
>> indexed on bdi.
>>
> <snip>
>
> Thanks Tejun,
>
>      I have applied your patches and no longer see the behavior
> mentioned in the bug report. All is well!

Tejun, I'll pick them up, and Jon, I'll add your tested-by to the 
commit. Thanks!


-- 
Jens Axboe

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