[Drbd-dev] [PATCH 01/27] target: remove an incorrect unmap zeroes data deduction

Chaitanya Kulkarni chaitanyak at nvidia.com
Fri Apr 15 07:36:12 CEST 2022

On 4/14/22 21:52, Christoph Hellwig wrote:
> For block devices, the SCSI target drivers implements UNMAP as calls to
> blkdev_issue_discard, which does not guarantee zeroing just because
> Write Zeroes is supported.
> Note that this does not affect the file backed path which uses
> fallocate to punch holes.
> Fixes: 2237498f0b5c ("target/iblock: Convert WRITE_SAME to blkdev_issue_zeroout")
> Signed-off-by: Christoph Hellwig <hch at lst.de>
> Reviewed-by: Martin K. Petersen <martin.petersen at oracle.com>

Not a good assumption to have for sure.

Looks good.

Reviewed-by: Chaitanya Kulkarni <kch at nvidia.com>


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