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block: move elevator.h to block/

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Except for the features passed to blk_queue_required_elevator_features,
elevator.h is only needed internally to the block layer.  Move the
ELEVATOR_F_* definitions to blkdev.h, and the move elevator.h to
block/, dropping all the spurious includes outside of that.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20210920123328.1399408-13-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-09-20 14:33:23 +02:00 • committed by Jens Axboe
parent 9778ac77c2
commit 2e9bc3465a
13 changed files with 23 additions and 26 deletions
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11
include/linux/blkdev.h
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@ -251,8 +251,6 @@ static inline unsigned short req_get_ioprio(struct request *req)
return req->ioprio;
}
#include <linux/elevator.h>
struct bio_vec;
enum blk_eh_timer_return {
@ -1124,6 +1122,15 @@ extern void blk_queue_dma_alignment(struct request_queue *, int);
extern void blk_queue_update_dma_alignment(struct request_queue *, int);
extern void blk_queue_rq_timeout(struct request_queue *, unsigned int);
extern void blk_queue_write_cache(struct request_queue *q, bool enabled, bool fua);
/*
* Elevator features for blk_queue_required_elevator_features:
*/
/* Supports zoned block devices sequential write constraint */
#define ELEVATOR_F_ZBD_SEQ_WRITE (1U << 0)
/* Supports scheduling on multiple hardware queues */
#define ELEVATOR_F_MQ_AWARE (1U << 1)
extern void blk_queue_required_elevator_features(struct request_queue *q,
unsigned int features);
extern bool blk_queue_can_use_dma_map_merging(struct request_queue *q,