GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-07-23 15:27:29 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

blk-mq: provide mq_ops->busy() hook

Browse source 
We'll hook into this from blk_lld_busy(), allowing blk-mq to also
return whether or not a given queue currently has requests in
progress.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2018-10-29 10:15:10 -06:00
parent ba7b443422
commit 9ba20527f4
2 changed files with 8 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

6
include/linux/blk-mq.h
View file

@ -114,6 +114,7 @@ typedef void (busy_iter_fn)(struct blk_mq_hw_ctx *, struct request *, void *,
typedef void (busy_tag_iter_fn)(struct request *, void *, bool);
typedef int (poll_fn)(struct blk_mq_hw_ctx *, unsigned int);
typedef int (map_queues_fn)(struct blk_mq_tag_set *set);
typedef bool (busy_fn)(struct request_queue *);
struct blk_mq_ops {
@ -165,6 +166,11 @@ struct blk_mq_ops {
/* Called from inside blk_get_request() */
void (*initialize_rq_fn)(struct request *rq);
/*
* If set, returns whether or not this queue currently is busy
*/
busy_fn *busy;
map_queues_fn *map_queues;
#ifdef CONFIG_BLK_DEBUG_FS