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Kirill Smelkov
linux
Commits
cad97516
Commit
cad97516
authored
Jan 14, 2007
by
Jens Axboe
Committed by
Jens Axboe
Feb 11, 2007
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Plain Diff
elevator: abstract out the activate and deactivate functions
Signed-off-by:
Jens Axboe
<
jens.axboe@oracle.com
>
parent
958b7f37
Changes
1
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with
20 additions
and
9 deletions
+20
-9
block/elevator.c
block/elevator.c
+20
-9
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block/elevator.c
View file @
cad97516
...
...
@@ -269,6 +269,22 @@ void elevator_exit(elevator_t *e)
EXPORT_SYMBOL
(
elevator_exit
);
static
void
elv_activate_rq
(
request_queue_t
*
q
,
struct
request
*
rq
)
{
elevator_t
*
e
=
q
->
elevator
;
if
(
e
->
ops
->
elevator_activate_req_fn
)
e
->
ops
->
elevator_activate_req_fn
(
q
,
rq
);
}
static
void
elv_deactivate_rq
(
request_queue_t
*
q
,
struct
request
*
rq
)
{
elevator_t
*
e
=
q
->
elevator
;
if
(
e
->
ops
->
elevator_deactivate_req_fn
)
e
->
ops
->
elevator_deactivate_req_fn
(
q
,
rq
);
}
static
inline
void
__elv_rqhash_del
(
struct
request
*
rq
)
{
hlist_del_init
(
&
rq
->
hash
);
...
...
@@ -498,16 +514,14 @@ void elv_merge_requests(request_queue_t *q, struct request *rq,
void
elv_requeue_request
(
request_queue_t
*
q
,
struct
request
*
rq
)
{
elevator_t
*
e
=
q
->
elevator
;
/*
* it already went through dequeue, we need to decrement the
* in_flight count again
*/
if
(
blk_account_rq
(
rq
))
{
q
->
in_flight
--
;
if
(
blk_sorted_rq
(
rq
)
&&
e
->
ops
->
elevator_deactivate_req_fn
)
e
->
ops
->
elevator_deactivate_req_fn
(
q
,
rq
);
if
(
blk_sorted_rq
(
rq
))
e
lv_deactivate_rq
(
q
,
rq
);
}
rq
->
cmd_flags
&=
~
REQ_STARTED
;
...
...
@@ -700,16 +714,13 @@ struct request *elv_next_request(request_queue_t *q)
while
((
rq
=
__elv_next_request
(
q
))
!=
NULL
)
{
if
(
!
(
rq
->
cmd_flags
&
REQ_STARTED
))
{
elevator_t
*
e
=
q
->
elevator
;
/*
* This is the first time the device driver
* sees this request (possibly after
* requeueing). Notify IO scheduler.
*/
if
(
blk_sorted_rq
(
rq
)
&&
e
->
ops
->
elevator_activate_req_fn
)
e
->
ops
->
elevator_activate_req_fn
(
q
,
rq
);
if
(
blk_sorted_rq
(
rq
))
elv_activate_rq
(
q
,
rq
);
/*
* just mark as started even if we don't start
...
...
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