So far blk_rq_prep_clone() is only used for setup one underlying cloned
request from dm-rq request. block intetrity can be enabled for both dm-rq
and the underlying queues, so it is reasonable to clone rq's
nr_integrity_segments. Also write_hint is from bio, it should have been
cloned too.
So clone nr_integrity_segments and write_hint in blk_rq_prep_clone.
Cc: John Garry <john.ga...@huawei.com>
Cc: Bart Van Assche <bvanass...@acm.org>
Cc: Hannes Reinecke <h...@suse.com>
Cc: Christoph Hellwig <h...@lst.de>
Cc: Thomas Gleixner <t...@linutronix.de>
Cc: Mike Snitzer <snit...@redhat.com>
Cc: dm-devel@redhat.com
Reviewed-by: Hannes Reinecke <h...@suse.de>
Reviewed-by: Christoph Hellwig <h...@lst.de>
Reviewed-by: Martin K. Petersen <martin.peter...@oracle.com>
Signed-off-by: Ming Lei <ming....@redhat.com>
---
block/blk-core.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/block/blk-core.c b/block/blk-core.c
index 7f11560bfddb..1fe73051fec3 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1630,8 +1630,12 @@ int blk_rq_prep_clone(struct request *rq, struct request
*rq_src,
rq->rq_flags |= RQF_SPECIAL_PAYLOAD;
rq->special_vec = rq_src->special_vec;
}
+#ifdef CONFIG_BLK_DEV_INTEGRITY
+ rq->nr_integrity_segments = rq_src->nr_integrity_segments;
+#endif
rq->nr_phys_segments = rq_src->nr_phys_segments;
rq->ioprio = rq_src->ioprio;
+ rq->write_hint = rq_src->write_hint;
return 0;
--
2.25.2
--
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