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linux-2.6
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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>
This commit is contained in:
Jens Axboe 2011-03-30 09:52:30 +02:00
parent 8182924bc5
commit b710a48055
3 changed files with 17 additions and 23 deletions
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4
block/blk-flush.c
View File

@ -261,7 +261,7 @@ static bool blk_kick_flush(struct request_queue *q)
q->flush_rq.end_io = flush_end_io;
q->flush_pending_idx ^= 1;
elv_insert(q, &q->flush_rq, ELEVATOR_INSERT_REQUEUE);
__elv_add_request(q, &q->flush_rq, ELEVATOR_INSERT_REQUEUE);
return true;
}
@ -281,7 +281,7 @@ static void flush_data_end_io(struct request *rq, int error)
* blk_insert_flush - insert a new FLUSH/FUA request
* @rq: request to insert
*
* To be called from elv_insert() for %ELEVATOR_INSERT_FLUSH insertions.
* To be called from __elv_add_request() for %ELEVATOR_INSERT_FLUSH insertions.
* @rq is being submitted. Analyze what needs to be done and put it on the
* right queue.
*

35
block/elevator.c
View File

@ -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)

1
include/linux/elevator.h
View File

@ -101,7 +101,6 @@ extern void elv_dispatch_sort(struct request_queue *, struct request *);
extern void elv_dispatch_add_tail(struct request_queue *, struct request *);
extern void elv_add_request(struct request_queue *, struct request *, int);
extern void __elv_add_request(struct request_queue *, struct request *, int);
extern void elv_insert(struct request_queue *, struct request *, int);
extern int elv_merge(struct request_queue *, struct request **, struct bio *);
extern int elv_try_merge(struct request *, struct bio *);
extern void elv_merge_requests(struct request_queue *, struct request *,