Re: [PATCH 13/25] block_dev: use blkdev_issue_zerout for hole punches

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To: Christoph Hellwig <hch@xxxxxx>
Subject: Re: [PATCH 13/25] block_dev: use blkdev_issue_zerout for hole punches
From: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>
Date: Wed, 05 Apr 2017 07:48:24 -0400
Cc: axboe@xxxxxxxxx, martin.petersen@xxxxxxxxxx, agk@xxxxxxxxxx, snitzer@xxxxxxxxxx, shli@xxxxxxxxxx, philipp.reisner@xxxxxxxxxx, lars.ellenberg@xxxxxxxxxx, linux-block@xxxxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, drbd-dev@xxxxxxxxxxxxxxxx, dm-devel@xxxxxxxxxx, linux-raid@xxxxxxxxxxxxxxx
In-reply-to: <20170331163313.31821-14-hch@lst.de> (Christoph Hellwig's message of "Fri, 31 Mar 2017 18:33:01 +0200")
Organization: Oracle Corporation
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux)

Christoph Hellwig <hch@xxxxxx> writes:

> This gets us support for non-discard efficient write of zeroes
> (e.g. NVMe) and prepare for removing the discard_zeroes_data flag.
                         s

Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>

-- 
Martin K. Petersen	Oracle Linux Engineering

References:
- always use REQ_OP_WRITE_ZEROES for zeroing offload
  - From: Christoph Hellwig
- [PATCH 13/25] block_dev: use blkdev_issue_zerout for hole punches
  - From: Christoph Hellwig

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