From: Christoph Hellwig Date: Fri, 15 Apr 2022 04:52:32 +0000 (+0200) Subject: target: remove an incorrect unmap zeroes data deduction X-Git-Tag: v5.15.73~3692 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ae42074b409fcc6027990142f7790a390674ed95;p=platform%2Fkernel%2Flinux-rpi.git target: remove an incorrect unmap zeroes data deduction [ Upstream commit 179d8609d8424529e95021df939ed7b0b82b37f1 ] 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 Reviewed-by: Martin K. Petersen Reviewed-by: Chaitanya Kulkarni Link: https://lore.kernel.org/r/20220415045258.199825-2-hch@lst.de Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin --- diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index 44bb380..fa866ac 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);