block: Don't merge requests if integrity flags differ
We'd occasionally merge requests with conflicting integrity flags.
Introduce a merge helper which checks that the requests have compatible
integrity payloads.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/block/blk-merge.c b/block/blk-merge.c
index 7788179..f71bad3 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -313,7 +313,7 @@
if (req->nr_phys_segments + nr_phys_segs > queue_max_segments(q))
goto no_merge;
- if (bio_integrity(bio) && blk_integrity_merge_bio(q, req, bio))
+ if (blk_integrity_merge_bio(q, req, bio) == false)
goto no_merge;
/*
@@ -410,7 +410,7 @@
if (total_phys_segments > queue_max_segments(q))
return 0;
- if (blk_integrity_rq(req) && blk_integrity_merge_rq(q, req, next))
+ if (blk_integrity_merge_rq(q, req, next) == false)
return 0;
/* Merge is OK... */
@@ -590,7 +590,7 @@
return false;
/* only merge integrity protected bio into ditto rq */
- if (bio_integrity(bio) != blk_integrity_rq(rq))
+ if (blk_integrity_merge_bio(rq->q, rq, bio) == false)
return false;
/* must be using the same buffer */