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| author |   Jens Axboe <jens.axboe@oracle.com> | 2006-12-19 08:33:11 +0100 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2006-12-19 08:33:11 +0100 |
| commit | 1aa4f24fe96938cabe7a1e9da8bc3bfbd1dfe3fa (patch) | |
| tree | 922149707b2741abc8dca53a3ae56e681ef0fbf6 /block | |
| parent | [PATCH] ->nr_sectors and ->hard_nr_sectors are not used for BLOCK_PC requests (diff) | |
| download | linux-dev-1aa4f24fe96938cabe7a1e9da8bc3bfbd1dfe3fa.tar.xz linux-dev-1aa4f24fe96938cabe7a1e9da8bc3bfbd1dfe3fa.zip | |
[PATCH] Remove queue merging hooks
We have full flexibility of merging parameters now, so we can remove the
hooks that define back/front/request merge strategies. Nobody is using
them anymore.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/ll_rw_blk.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c index 71a78a7e42fd..433797934bd5 100644 --- a/block/ll_rw_blk.c +++ b/block/ll_rw_blk.c @@ -1405,8 +1405,7 @@ static inline int ll_new_hw_segment(request_queue_t *q, return 1; } -static int ll_back_merge_fn(request_queue_t *q, struct request *req, - struct bio *bio) +int ll_back_merge_fn(request_queue_t *q, struct request *req, struct bio *bio) { unsigned short max_sectors; int len; @@ -1442,6 +1441,7 @@ static int ll_back_merge_fn(request_queue_t *q, struct request *req, return ll_new_hw_segment(q, req, bio); } +EXPORT_SYMBOL(ll_back_merge_fn); static int ll_front_merge_fn(request_queue_t *q, struct request *req, struct bio *bio) @@ -1912,9 +1912,6 @@ blk_init_queue_node(request_fn_proc *rfn, spinlock_t *lock, int node_id) } q->request_fn = rfn; - q->back_merge_fn = ll_back_merge_fn; - q->front_merge_fn = ll_front_merge_fn; - q->merge_requests_fn = ll_merge_requests_fn; q->prep_rq_fn = NULL; q->unplug_fn = generic_unplug_device; q->queue_flags = (1 << QUEUE_FLAG_CLUSTER); @@ -2371,7 +2368,7 @@ static int __blk_rq_map_user(request_queue_t *q, struct request *rq, spin_lock_irq(q->queue_lock); if (!rq->bio) blk_rq_bio_prep(q, rq, bio); - else if (!q->back_merge_fn(q, rq, bio)) { + else if (!ll_back_merge_fn(q, rq, bio)) { ret = -EINVAL; spin_unlock_irq(q->queue_lock); goto unmap_bio; @@ -2820,7 +2817,7 @@ static int attempt_merge(request_queue_t *q, struct request *req, * will have updated segment counts, update sector * counts here. */ - if (!q->merge_requests_fn(q, req, next)) + if (!ll_merge_requests_fn(q, req, next)) return 0; /* @@ -2937,7 +2934,7 @@ static int __make_request(request_queue_t *q, struct bio *bio) case ELEVATOR_BACK_MERGE: BUG_ON(!rq_mergeable(req)); - if (!q->back_merge_fn(q, req, bio)) + if (!ll_back_merge_fn(q, req, bio)) break; blk_add_trace_bio(q, bio, BLK_TA_BACKMERGE); @@ -2954,7 +2951,7 @@ static int __make_request(request_queue_t *q, struct bio *bio) case ELEVATOR_FRONT_MERGE: BUG_ON(!rq_mergeable(req)); - if (!q->front_merge_fn(q, req, bio)) + if (!ll_front_merge_fn(q, req, bio)) break; blk_add_trace_bio(q, bio, BLK_TA_FRONTMERGE); |