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scsi: block: Don't check REQ_ATOMIC for reads

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[ Upstream commit ea6787c695ab7595d851c3506f67c157f3b593c0 ]

We check in submit_bio_noacct() if flag REQ_ATOMIC is set for both read and
write operations, and then validate the atomic operation if set. Flag
REQ_ATOMIC can only be set for writes, so don't bother checking for reads.

Fixes: 9da3d1e912 ("block: Add core atomic write support")
Signed-off-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20240805113315.1048591-3-john.g.garry@oracle.com
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
John Garry 2024-08-05 11:33:15 +00:00 committed by Greg Kroah-Hartman
parent e747cd4acd
commit 533489fc65
1 changed files with 1 additions and 0 deletions
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block/blk-core.c
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@ -799,6 +799,7 @@ void submit_bio_noacct(struct bio *bio)
switch (bio_op(bio)) {
case REQ_OP_READ:
break;
case REQ_OP_WRITE:
if (bio->bi_opf & REQ_ATOMIC) {
status = blk_validate_atomic_write_op_size(q, bio);