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block: remove elevator_queue->ops

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elevator_queue->ops points to the same ops struct ->elevator_type.ops
is pointing to.  The only effect of caching it in elevator_queue is
shorter notation - it doesn't save any indirect derefence.

Relocate elevator_type->list which used only during module init/exit
to the end of the structure, rename elevator_queue->elevator_type to
->type, and replace elevator_queue->ops with elevator_queue->type.ops.

This doesn't introduce any functional difference.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Tejun Heo
2011-12-14 00:33:41 +01:00
committed by Jens Axboe
parent f8fc877d3c
commit 22f746e235
3 changed files with 43 additions and 46 deletions
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10
block/blk.h
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@@ -94,7 +94,7 @@ static inline struct request *__elv_next_request(struct request_queue *q)
return NULL;
}
if (unlikely(blk_queue_dead(q)) ||
!q->elevator->ops->elevator_dispatch_fn(q, 0))
!q->elevator->type->ops.elevator_dispatch_fn(q, 0))
return NULL;
}
}
@@ -103,16 +103,16 @@ static inline void elv_activate_rq(struct request_queue *q, struct request *rq)
{
struct elevator_queue *e = q->elevator;
if (e->ops->elevator_activate_req_fn)
e->ops->elevator_activate_req_fn(q, rq);
if (e->type->ops.elevator_activate_req_fn)
e->type->ops.elevator_activate_req_fn(q, rq);
}
static inline void elv_deactivate_rq(struct request_queue *q, struct request *rq)
{
struct elevator_queue *e = q->elevator;
if (e->ops->elevator_deactivate_req_fn)
e->ops->elevator_deactivate_req_fn(q, rq);
if (e->type->ops.elevator_deactivate_req_fn)
e->type->ops.elevator_deactivate_req_fn(q, rq);
}
#ifdef CONFIG_FAIL_IO_TIMEOUT