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Date: Wed, 6 Apr 2022 08:04:50 +0200 From: Christoph Hellwig <hch@....de> To: Jens Axboe <axboe@...nel.dk> Cc: dm-devel@...hat.com, linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org, linux-um@...ts.infradead.org, linux-block@...r.kernel.org, drbd-dev@...ts.linbit.com, nbd@...er.debian.org, ceph-devel@...r.kernel.org, virtualization@...ts.linux-foundation.org, xen-devel@...ts.xenproject.org, linux-bcache@...r.kernel.org, linux-raid@...r.kernel.org, linux-mmc@...r.kernel.org, linux-mtd@...ts.infradead.org, linux-nvme@...ts.infradead.org, linux-s390@...r.kernel.org, linux-scsi@...r.kernel.org, target-devel@...r.kernel.org, linux-btrfs@...r.kernel.org, linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net, cluster-devel@...hat.com, jfs-discussion@...ts.sourceforge.net, linux-nilfs@...r.kernel.org, ntfs3@...ts.linux.dev, ocfs2-devel@....oracle.com, linux-mm@...ck.org Subject: [PATCH 01/27] target: remove an incorrect unmap zeroes data deduction 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@....de> --- drivers/target/target_core_device.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index 44bb380e7390c..fa866acef5bb2 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); -- 2.30.2
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