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-rw-r--r--block/blk-merge.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/block/blk-merge.c b/block/blk-merge.c
index 77881798f79..ba99351c0f5 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -97,14 +97,18 @@ void blk_recalc_rq_segments(struct request *rq)
void blk_recount_segments(struct request_queue *q, struct bio *bio)
{
- if (test_bit(QUEUE_FLAG_NO_SG_MERGE, &q->queue_flags) &&
+ bool no_sg_merge = !!test_bit(QUEUE_FLAG_NO_SG_MERGE,
+ &q->queue_flags);
+
+ if (no_sg_merge && !bio_flagged(bio, BIO_CLONED) &&
bio->bi_vcnt < queue_max_segments(q))
bio->bi_phys_segments = bio->bi_vcnt;
else {
struct bio *nxt = bio->bi_next;
bio->bi_next = NULL;
- bio->bi_phys_segments = __blk_recalc_rq_segments(q, bio, false);
+ bio->bi_phys_segments = __blk_recalc_rq_segments(q, bio,
+ no_sg_merge);
bio->bi_next = nxt;
}
@@ -313,7 +317,7 @@ static inline int ll_new_hw_segment(struct request_queue *q,
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 +414,7 @@ static int ll_merge_requests_fn(struct request_queue *q, struct request *req,
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 +594,7 @@ bool blk_rq_merge_ok(struct request *rq, struct bio *bio)
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 */