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

Martin K. Petersen martin.petersen at oracle.com
Thu Apr 7 05:05:13 CEST 2022


> For block devices the target code 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>

Martin K. Petersen	Oracle Linux Engineering

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