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block: simplify disk shutdown

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Set the queue dying flag and call blk_mq_exit_queue from del_gendisk for
all disks that do not have separately allocated queues, and thus remove
the need to call blk_cleanup_queue for them.

Rename blk_cleanup_disk to blk_mq_destroy_queue to make it clear that
this function is intended only for separately allocated blk-mq queues.

This saves an extra queue freeze for devices without a separately
allocated queue.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20220619060552.1850436-6-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2022-06-19 08:05:51 +02:00 • committed by Jens Axboe
parent 0e3534022f
commit 6f8191fdf4
34 changed files with 105 additions and 113 deletions
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4
include/linux/blkdev.h
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@ -148,6 +148,7 @@ struct gendisk {
#define GD_NATIVE_CAPACITY 3
#define GD_ADDED 4
#define GD_SUPPRESS_PART_SCAN 5
#define GD_OWNS_QUEUE 6
struct mutex open_mutex; /* open/close mutex */
unsigned open_partitions; /* number of open partitions */
@ -815,8 +816,6 @@ static inline u64 sb_bdev_nr_blocks(struct super_block *sb)
int bdev_disk_changed(struct gendisk *disk, bool invalidate);
struct gendisk *__alloc_disk_node(struct request_queue *q, int node_id,
struct lock_class_key *lkclass);
void put_disk(struct gendisk *disk);
struct gendisk *__blk_alloc_disk(int node, struct lock_class_key *lkclass);
@ -933,7 +932,6 @@ static inline unsigned int blk_chunk_sectors_left(sector_t offset,
/*
* Access functions for manipulating queue properties
*/
extern void blk_cleanup_queue(struct request_queue *);
void blk_queue_bounce_limit(struct request_queue *q, enum blk_bounce limit);
extern void blk_queue_max_hw_sectors(struct request_queue *, unsigned int);
extern void blk_queue_chunk_sectors(struct request_queue *, unsigned int);