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| author | Jens Axboe <jaxboe@fusionio.com> | 2010-11-16 12:09:42 +0300 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2010-11-16 12:09:42 +0300 |
| commit | a02056349cdea2252cd2b21643ebf025e83a29f2 (patch) | |
| tree | b7c889d6cbe8e7188d07d99a5c9da858c53a5b6c /block/blk-merge.c | |
| parent | 34db1d595ef6f183fbc1e42cda45a3dfa0035258 (diff) | |
| parent | e53beacd23d9cb47590da6a7a7f6d417b941a994 (diff) | |
| download | linux-a02056349cdea2252cd2b21643ebf025e83a29f2.tar.xz | |
Merge branch 'v2.6.37-rc2' into for-2.6.38/core
Diffstat (limited to 'block/blk-merge.c')
| -rw-r--r-- | block/blk-merge.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/block/blk-merge.c b/block/blk-merge.c index eafc94f68d79..77b7c26df6b5 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; @@ -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 |