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-rw-r--r--block/blk-merge.c25
1 files changed, 15 insertions, 10 deletions
diff --git a/block/blk-merge.c b/block/blk-merge.c
index eafc94f68d7..0a2fd8a48a3 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -205,12 +205,11 @@ static inline int ll_new_hw_segment(struct request_queue *q,
{
int nr_phys_segs = bio_phys_segments(q, bio);
- if (req->nr_phys_segments + nr_phys_segs > queue_max_segments(q)) {
- req->cmd_flags |= REQ_NOMERGE;
- if (req == q->last_merge)
- q->last_merge = NULL;
- return 0;
- }
+ 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))
+ goto no_merge;
/*
* This will form the start of a new hw segment. Bump both
@@ -218,6 +217,12 @@ static inline int ll_new_hw_segment(struct request_queue *q,
*/
req->nr_phys_segments += nr_phys_segs;
return 1;
+
+no_merge:
+ req->cmd_flags |= REQ_NOMERGE;
+ if (req == q->last_merge)
+ q->last_merge = NULL;
+ return 0;
}
int ll_back_merge_fn(struct request_queue *q, struct request *req,
@@ -301,6 +306,9 @@ 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))
+ return 0;
+
/* Merge is OK... */
req->nr_phys_segments = total_phys_segments;
return 1;
@@ -343,7 +351,7 @@ static void blk_account_io_merge(struct request *req)
int cpu;
cpu = part_stat_lock();
- part = disk_map_sector_rcu(req->rq_disk, blk_rq_pos(req));
+ part = req->part;
part_round_stats(cpu, part);
part_dec_in_flight(part, rq_data_dir(req));
@@ -384,9 +392,6 @@ static int attempt_merge(struct request_queue *q, struct request *req,
|| next->special)
return 0;
- if (blk_integrity_rq(req) != blk_integrity_rq(next))
- return 0;
-
/*
* If we are allowed to merge, then append bio list
* from next to rq and release next. merge_requests_fn