Merge: block: flip iter directions in blk_rq_integrity_map_user()

MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-10/-/merge_requests/1195

block: flip iter directions in blk_rq_integrity_map_user()

JIRA: https://issues.redhat.com/browse/RHEL-102497

Signed-off-by: Ming Lei <ming.lei@redhat.com>

Approved-by: Jeff Moyer <jmoyer@redhat.com>
Approved-by: Ewan D. Milne <emilne@redhat.com>
Approved-by: CKI KWF Bot <cki-ci-bot+kwf-gitlab-com@redhat.com>

Merged-by: Julio Faracco <jfaracco@redhat.com>

Author: jcfaracco

block/blk-integrity.c

@@ -117,13 +117,8 @@ int blk_rq_integrity_map_user(struct request *rq, void __user *ubuf,
 {
 	int ret;
 	struct iov_iter iter;
-	unsigned int direction;
 
-	if (op_is_write(req_op(rq)))
-		direction = ITER_DEST;
-	else
-		direction = ITER_SOURCE;
-	iov_iter_ubuf(&iter, direction, ubuf, bytes);
+	iov_iter_ubuf(&iter, rq_data_dir(rq), ubuf, bytes);
 	ret = bio_integrity_map_user(rq->bio, &iter);
 	if (ret)
 		return ret;