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authorJens Axboe <jens.axboe@oracle.com>2006-12-19 08:33:11 +0100
committerJens Axboe <jens.axboe@oracle.com>2006-12-19 08:33:11 +0100
commit1aa4f24fe96938cabe7a1e9da8bc3bfbd1dfe3fa (patch)
tree922149707b2741abc8dca53a3ae56e681ef0fbf6 /block
parent2985259b0e3928d4cd0723ac5aad0d1190ab7717 (diff)
downloadlinux-linaro-stable-1aa4f24fe96938cabe7a1e9da8bc3bfbd1dfe3fa.tar.gz
[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.c15
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);