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blk-mq: pass a flags argument to elevator_type->insert_requests

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Instead of passing a bool at_head, pass down the full flags from the
blk_mq_insert_request interface.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20230413064057.707578-20-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2023-04-13 08:40:56 +02:00 committed by Jens Axboe
parent 2b5976134b
commit 93fffe16f7
5 changed files with 21 additions and 18 deletions
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12
block/bfq-iosched.c
View File

@ -6231,7 +6231,7 @@ static inline void bfq_update_insert_stats(struct request_queue *q,
static struct bfq_queue *bfq_init_rq(struct request *rq);
static void bfq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
bool at_head)
blk_insert_t flags)
{
struct request_queue *q = hctx->queue;
struct bfq_data *bfqd = q->elevator->elevator_data;
@ -6254,10 +6254,9 @@ static void bfq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
trace_block_rq_insert(rq);
if (!bfqq || at_head) {
if (at_head)
if (flags & BLK_MQ_INSERT_AT_HEAD) {
list_add(&rq->queuelist, &bfqd->dispatch);
else
} else if (!bfqq) {
list_add_tail(&rq->queuelist, &bfqd->dispatch);
} else {
idle_timer_disabled = __bfq_insert_request(bfqd, rq);
@ -6288,14 +6287,15 @@ static void bfq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
}
static void bfq_insert_requests(struct blk_mq_hw_ctx *hctx,
struct list_head *list, bool at_head)
struct list_head *list,
blk_insert_t flags)
{
while (!list_empty(list)) {
struct request *rq;
rq = list_first_entry(list, struct request, queuelist);
list_del_init(&rq->queuelist);
bfq_insert_request(hctx, rq, at_head);
bfq_insert_request(hctx, rq, flags);
}
}

5
block/blk-mq.c
View File

@ -2556,8 +2556,7 @@ static void blk_mq_insert_request(struct request *rq, blk_insert_t flags)
WARN_ON_ONCE(rq->tag != BLK_MQ_NO_TAG);
list_add(&rq->queuelist, &list);
q->elevator->type->ops.insert_requests(hctx, &list,
flags & BLK_MQ_INSERT_AT_HEAD);
q->elevator->type->ops.insert_requests(hctx, &list, flags);
} else {
trace_block_rq_insert(rq);
@ -2768,7 +2767,7 @@ static void blk_mq_dispatch_plug_list(struct blk_plug *plug, bool from_sched)
percpu_ref_get(&this_hctx->queue->q_usage_counter);
if (this_hctx->queue->elevator) {
this_hctx->queue->elevator->type->ops.insert_requests(this_hctx,
&list, false);
&list, 0);
blk_mq_run_hw_queue(this_hctx, from_sched);
} else {
blk_mq_insert_requests(this_hctx, this_ctx, &list, from_sched);

4
block/elevator.h
View File

@ -4,6 +4,7 @@
#include <linux/percpu.h>
#include <linux/hashtable.h>
#include "blk-mq.h"
struct io_cq;
struct elevator_type;
@ -37,7 +38,8 @@ struct elevator_mq_ops {
void (*limit_depth)(blk_opf_t, struct blk_mq_alloc_data *);
void (*prepare_request)(struct request *);
void (*finish_request)(struct request *);
void (*insert_requests)(struct blk_mq_hw_ctx *, struct list_head *, bool);
void (*insert_requests)(struct blk_mq_hw_ctx *hctx, struct list_head *list,
blk_insert_t flags);
struct request *(*dispatch_request)(struct blk_mq_hw_ctx *);
bool (*has_work)(struct blk_mq_hw_ctx *);
void (*completed_request)(struct request *, u64);

5
block/kyber-iosched.c
View File

@ -588,7 +588,8 @@ static void kyber_prepare_request(struct request *rq)
}
static void kyber_insert_requests(struct blk_mq_hw_ctx *hctx,
struct list_head *rq_list, bool at_head)
struct list_head *rq_list,
blk_insert_t flags)
{
struct kyber_hctx_data *khd = hctx->sched_data;
struct request *rq, *next;
@ -600,7 +601,7 @@ static void kyber_insert_requests(struct blk_mq_hw_ctx *hctx,
spin_lock(&kcq->lock);
trace_block_rq_insert(rq);
if (at_head)
if (flags & BLK_MQ_INSERT_AT_HEAD)
list_move(&rq->queuelist, head);
else
list_move_tail(&rq->queuelist, head);

9
block/mq-deadline.c
View File

@ -766,7 +766,7 @@ static bool dd_bio_merge(struct request_queue *q, struct bio *bio,
* add rq to rbtree and fifo
*/
static void dd_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
bool at_head)
blk_insert_t flags)
{
struct request_queue *q = hctx->queue;
struct deadline_data *dd = q->elevator->elevator_data;
@ -799,7 +799,7 @@ static void dd_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
trace_block_rq_insert(rq);
if (at_head) {
if (flags & BLK_MQ_INSERT_AT_HEAD) {
list_add(&rq->queuelist, &per_prio->dispatch);
rq->fifo_time = jiffies;
} else {
@ -823,7 +823,8 @@ static void dd_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
* Called from blk_mq_insert_request() or blk_mq_dispatch_plug_list().
*/
static void dd_insert_requests(struct blk_mq_hw_ctx *hctx,
struct list_head *list, bool at_head)
struct list_head *list,
blk_insert_t flags)
{
struct request_queue *q = hctx->queue;
struct deadline_data *dd = q->elevator->elevator_data;
@ -834,7 +835,7 @@ static void dd_insert_requests(struct blk_mq_hw_ctx *hctx,
rq = list_first_entry(list, struct request, queuelist);
list_del_init(&rq->queuelist);
dd_insert_request(hctx, rq, at_head);
dd_insert_request(hctx, rq, flags);
}
spin_unlock(&dd->lock);
}