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| author | David Disseldorp <ddiss@suse.de> | 2020-04-19 19:31:09 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-05-06 09:13:31 +0300 |
| commit | b454d754cb174bbb15fdfb2aab82bdc1d3248253 (patch) | |
| tree | 54e1674b48ea4879cdf6f1707b716a2c1d6a477f /drivers | |
| parent | d40ceed180446939dd9c2f6e03b093a64497fa27 (diff) | |
| download | linux-b454d754cb174bbb15fdfb2aab82bdc1d3248253.tar.xz | |
scsi: target/iblock: fix WRITE SAME zeroing
commit 1d2ff149b263c9325875726a7804a0c75ef7112e upstream.
SBC4 specifies that WRITE SAME requests with the UNMAP bit set to zero
"shall perform the specified write operation to each LBA specified by the
command". Commit 2237498f0b5c ("target/iblock: Convert WRITE_SAME to
blkdev_issue_zeroout") modified the iblock backend to call
blkdev_issue_zeroout() when handling WRITE SAME requests with UNMAP=0 and a
zero data segment.
The iblock blkdev_issue_zeroout() call incorrectly provides a flags
parameter of 0 (bool false), instead of BLKDEV_ZERO_NOUNMAP. The bool
false parameter reflects the blkdev_issue_zeroout() API prior to commit
ee472d835c26 ("block: add a flags argument to (__)blkdev_issue_zeroout")
which was merged shortly before 2237498f0b5c.
Link: https://lore.kernel.org/r/20200419163109.11689-1-ddiss@suse.de
Fixes: 2237498f0b5c ("target/iblock: Convert WRITE_SAME to blkdev_issue_zeroout")
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/target/target_core_iblock.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index 854b2bcca7c1..5668d02de10b 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -445,7 +445,7 @@ iblock_execute_zero_out(struct block_device *bdev, struct se_cmd *cmd) target_to_linux_sector(dev, cmd->t_task_lba), target_to_linux_sector(dev, sbc_get_write_same_sectors(cmd)), - GFP_KERNEL, false); + GFP_KERNEL, BLKDEV_ZERO_NOUNMAP); if (ret) return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; |