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| author | Jens Axboe <axboe@kernel.dk> | 2017-08-09 02:51:45 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-08-09 22:09:28 +0300 |
| commit | f299b7c7a9dee64425e5965bd4f56dc024c1befc (patch) | |
| tree | d81520896fad3b9d3e87c19d538ec00c052d1b7c /include/linux/genhd.h | |
| parent | 0609e0efc5e15195ecf8c6d2f2e890d98760e337 (diff) | |
| download | linux-f299b7c7a9dee64425e5965bd4f56dc024c1befc.tar.xz | |
blk-mq: provide internal in-flight variant
We don't have to inc/dec some counter, since we can just
iterate the tags. That makes inc/dec a noop, but means we
have to iterate busy tags to get an in-flight count.
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/genhd.h')
| -rw-r--r-- | include/linux/genhd.h | 35 |
1 files changed, 6 insertions, 29 deletions
diff --git a/include/linux/genhd.h b/include/linux/genhd.h index f2a3a26cdda1..ea652bfcd675 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -362,35 +362,12 @@ static inline void free_part_stats(struct hd_struct *part) #define part_stat_sub(cpu, gendiskp, field, subnd) \ part_stat_add(cpu, gendiskp, field, -subnd) -static inline void part_inc_in_flight(struct request_queue *q, - struct hd_struct *part, int rw) -{ - atomic_inc(&part->in_flight[rw]); - if (part->partno) - atomic_inc(&part_to_disk(part)->part0.in_flight[rw]); -} - -static inline void part_dec_in_flight(struct request_queue *q, - struct hd_struct *part, int rw) -{ - atomic_dec(&part->in_flight[rw]); - if (part->partno) - atomic_dec(&part_to_disk(part)->part0.in_flight[rw]); -} - -static inline void part_in_flight(struct request_queue *q, - struct hd_struct *part, - unsigned int inflight[2]) -{ - inflight[0] = atomic_read(&part->in_flight[0]) + - atomic_read(&part->in_flight[1]); - if (part->partno) { - part = &part_to_disk(part)->part0; - inflight[1] = atomic_read(&part->in_flight[0]) + - atomic_read(&part->in_flight[1]); - } else - inflight[1] = 0; -} +void part_in_flight(struct request_queue *q, struct hd_struct *part, + unsigned int inflight[2]); +void part_dec_in_flight(struct request_queue *q, struct hd_struct *part, + int rw); +void part_inc_in_flight(struct request_queue *q, struct hd_struct *part, + int rw); static inline struct partition_meta_info *alloc_part_info(struct gendisk *disk) { |