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blk-mq: fix sysfs inflight counter

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When the blk-mq inflight implementation was added, /proc/diskstats was
converted to use it, but /sys/block/$dev/inflight was not. Fix it by
adding another helper to count in-flight requests by data direction.

Fixes: f299b7c7a9 ("blk-mq: provide internal in-flight variant")
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Omar Sandoval
2018-04-26 00:21:59 -07:00
committed by Jens Axboe
parent 6131837b1d
commit bf0ddaba65
5 changed files with 43 additions and 6 deletions
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4
include/linux/genhd.h
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@@ -368,7 +368,9 @@ static inline void free_part_stats(struct hd_struct *part)
part_stat_add(cpu, gendiskp, field, -subnd)
void part_in_flight(struct request_queue *q, struct hd_struct *part,
unsigned int inflight[2]);
unsigned int inflight[2]);
void part_in_flight_rw(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,