Re: [PATCH 2/2 block/for-linus] writeback: don't drain bdi_writeback_congested on bdi destruction

[Jon Christopherson]

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!

-Jon
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