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Christoph Hellwig authored
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: 2237498f ("target/iblock: Convert WRITE_SAME to blkdev_issue_zeroout") Signed-off-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by:
Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20220415045258.199825-2-hch@lst.deSigned-off-by:
Jens Axboe <axboe@kernel.dk>
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