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authorChristoph Hellwig <hch@lst.de>2022-04-15 06:52:32 +0200
committerJens Axboe <axboe@kernel.dk>2022-04-17 19:49:58 -0600
commit179d8609d8424529e95021df939ed7b0b82b37f1 (patch)
tree237900d63a1993a0b16b8fdf7b6313351f9392a2 /drivers/target
parent075a53b78b815301f8d3dd1ee2cd99554e34f0dd (diff)
downloadlinux-179d8609d8424529e95021df939ed7b0b82b37f1.tar.bz2
target: remove an incorrect unmap zeroes data deduction
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@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.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/target')
-rw-r--r--drivers/target/target_core_device.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index 44bb380e7390..fa866acef5bb 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -850,7 +850,6 @@ bool target_configure_unmap_from_queue(struct se_dev_attrib *attrib,
attrib->unmap_granularity = q->limits.discard_granularity / block_size;
attrib->unmap_granularity_alignment = q->limits.discard_alignment /
block_size;
- attrib->unmap_zeroes_data = !!(q->limits.max_write_zeroes_sectors);
return true;
}
EXPORT_SYMBOL(target_configure_unmap_from_queue);