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Re: [dm-devel] [PATCH 2/5] dm: implement REQ_FLUSH/FUA support for bio-based dm
- From: Mike Snitzer <snitzer redhat com>
- To: Tejun Heo <tj kernel org>
- Cc: k-ueda ct jp nec com, jaxboe fusionio com, jamie shareable org, linux-kernel vger kernel org, linux-raid vger kernel org, linux-fsdevel vger kernel org, dm-devel redhat com, j-nomura ce jp nec com, hch lst de
- Subject: Re: [dm-devel] [PATCH 2/5] dm: implement REQ_FLUSH/FUA support for bio-based dm
- Date: Wed, 1 Sep 2010 09:43:43 -0400
On Mon, Aug 30 2010 at 5:58am -0400,
Tejun Heo <tj kernel org> wrote:
> This patch converts bio-based dm to support REQ_FLUSH/FUA instead of
> now deprecated REQ_HARDBARRIER.
>
> * -EOPNOTSUPP handling logic dropped.
Can you expand on _why_ -EOPNOTSUPP handling is no longer needed? And
please at it to the final patch header.
This removal isn't unique to DM's conversion to FLUSH+FUA but I couldn't
easily find the justification for its removal in the larger 30+ patch
patchset either -- other patches are terse on the removal too.
Other than that.
Acked-by: Mike Snitzer <snitzer redhat com>
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