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authorJens Axboe <jaxboe@fusionio.com>2011-03-30 09:52:30 +0200
committerJens Axboe <jaxboe@fusionio.com>2011-04-05 23:51:37 +0200
commitb710a480554f2be682bac3cb59b0e085ba3d644b (patch)
treebd1b9d5080bca2b35c861ddbc98d4116445bebfb /block/elevator.c
parent8182924bc5850281985d73c312876746acd390b5 (diff)
downloadop-kernel-dev-b710a480554f2be682bac3cb59b0e085ba3d644b.zip
op-kernel-dev-b710a480554f2be682bac3cb59b0e085ba3d644b.tar.gz
block: get rid of elv_insert() interface
Merge it with __elv_add_request(), it's pretty pointless to have a function with only two callers. The main interface is elv_add_request()/__elv_add_request(). Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'block/elevator.c')
-rw-r--r--block/elevator.c35
1 files changed, 15 insertions, 20 deletions
diff --git a/block/elevator.c b/block/elevator.c
index c387d31..0cdb4e7 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -610,7 +610,7 @@ void elv_requeue_request(struct request_queue *q, struct request *rq)
rq->cmd_flags &= ~REQ_STARTED;
- elv_insert(q, rq, ELEVATOR_INSERT_REQUEUE);
+ __elv_add_request(q, rq, ELEVATOR_INSERT_REQUEUE);
}
void elv_drain_elevator(struct request_queue *q)
@@ -655,12 +655,25 @@ void elv_quiesce_end(struct request_queue *q)
queue_flag_clear(QUEUE_FLAG_ELVSWITCH, q);
}
-void elv_insert(struct request_queue *q, struct request *rq, int where)
+void __elv_add_request(struct request_queue *q, struct request *rq, int where)
{
trace_block_rq_insert(q, rq);
rq->q = q;
+ BUG_ON(rq->cmd_flags & REQ_ON_PLUG);
+
+ if (rq->cmd_flags & REQ_SOFTBARRIER) {
+ /* barriers are scheduling boundary, update end_sector */
+ if (rq->cmd_type == REQ_TYPE_FS ||
+ (rq->cmd_flags & REQ_DISCARD)) {
+ q->end_sector = rq_end_sector(rq);
+ q->boundary_rq = rq;
+ }
+ } else if (!(rq->cmd_flags & REQ_ELVPRIV) &&
+ where == ELEVATOR_INSERT_SORT)
+ where = ELEVATOR_INSERT_BACK;
+
switch (where) {
case ELEVATOR_INSERT_REQUEUE:
case ELEVATOR_INSERT_FRONT:
@@ -722,24 +735,6 @@ void elv_insert(struct request_queue *q, struct request *rq, int where)
BUG();
}
}
-
-void __elv_add_request(struct request_queue *q, struct request *rq, int where)
-{
- BUG_ON(rq->cmd_flags & REQ_ON_PLUG);
-
- if (rq->cmd_flags & REQ_SOFTBARRIER) {
- /* barriers are scheduling boundary, update end_sector */
- if (rq->cmd_type == REQ_TYPE_FS ||
- (rq->cmd_flags & REQ_DISCARD)) {
- q->end_sector = rq_end_sector(rq);
- q->boundary_rq = rq;
- }
- } else if (!(rq->cmd_flags & REQ_ELVPRIV) &&
- where == ELEVATOR_INSERT_SORT)
- where = ELEVATOR_INSERT_BACK;
-
- elv_insert(q, rq, where);
-}
EXPORT_SYMBOL(__elv_add_request);
void elv_add_request(struct request_queue *q, struct request *rq, int where)
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