arm64: uaccess: Prevent speculative use of the current addr_limit
[linux/fpc-iii.git] / block / blk-mq-sched.h
blobba1d1418a96dbbd1a394e07d06f7847b4df2c8fe
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef BLK_MQ_SCHED_H
3 #define BLK_MQ_SCHED_H
5 #include "blk-mq.h"
6 #include "blk-mq-tag.h"
8 void blk_mq_sched_free_hctx_data(struct request_queue *q,
9 void (*exit)(struct blk_mq_hw_ctx *));
11 void blk_mq_sched_assign_ioc(struct request *rq, struct bio *bio);
13 void blk_mq_sched_request_inserted(struct request *rq);
14 bool blk_mq_sched_try_merge(struct request_queue *q, struct bio *bio,
15 struct request **merged_request);
16 bool __blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio);
17 bool blk_mq_sched_try_insert_merge(struct request_queue *q, struct request *rq);
18 void blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx);
20 void blk_mq_sched_insert_request(struct request *rq, bool at_head,
21 bool run_queue, bool async, bool can_block);
22 void blk_mq_sched_insert_requests(struct request_queue *q,
23 struct blk_mq_ctx *ctx,
24 struct list_head *list, bool run_queue_async);
26 void blk_mq_sched_dispatch_requests(struct blk_mq_hw_ctx *hctx);
28 int blk_mq_init_sched(struct request_queue *q, struct elevator_type *e);
29 void blk_mq_exit_sched(struct request_queue *q, struct elevator_queue *e);
31 int blk_mq_sched_init_hctx(struct request_queue *q, struct blk_mq_hw_ctx *hctx,
32 unsigned int hctx_idx);
33 void blk_mq_sched_exit_hctx(struct request_queue *q, struct blk_mq_hw_ctx *hctx,
34 unsigned int hctx_idx);
36 int blk_mq_sched_init(struct request_queue *q);
38 static inline bool
39 blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio)
41 if (blk_queue_nomerges(q) || !bio_mergeable(bio))
42 return false;
44 return __blk_mq_sched_bio_merge(q, bio);
47 static inline bool
48 blk_mq_sched_allow_merge(struct request_queue *q, struct request *rq,
49 struct bio *bio)
51 struct elevator_queue *e = q->elevator;
53 if (e && e->type->ops.mq.allow_merge)
54 return e->type->ops.mq.allow_merge(q, rq, bio);
56 return true;
59 static inline void blk_mq_sched_completed_request(struct request *rq)
61 struct elevator_queue *e = rq->q->elevator;
63 if (e && e->type->ops.mq.completed_request)
64 e->type->ops.mq.completed_request(rq);
67 static inline void blk_mq_sched_started_request(struct request *rq)
69 struct request_queue *q = rq->q;
70 struct elevator_queue *e = q->elevator;
72 if (e && e->type->ops.mq.started_request)
73 e->type->ops.mq.started_request(rq);
76 static inline void blk_mq_sched_requeue_request(struct request *rq)
78 struct request_queue *q = rq->q;
79 struct elevator_queue *e = q->elevator;
81 if (e && e->type->ops.mq.requeue_request)
82 e->type->ops.mq.requeue_request(rq);
85 static inline bool blk_mq_sched_has_work(struct blk_mq_hw_ctx *hctx)
87 struct elevator_queue *e = hctx->queue->elevator;
89 if (e && e->type->ops.mq.has_work)
90 return e->type->ops.mq.has_work(hctx);
92 return false;
95 static inline bool blk_mq_sched_needs_restart(struct blk_mq_hw_ctx *hctx)
97 return test_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state);
100 #endif