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@xxxxxx>
> Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Not a good assumption to have for sure.
Looks good.
Reviewed-by: Chaitanya Kulkarni <kch@xxxxxxxxxx>
-ck
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