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Merge tag 'md-6.16-20250513' of https://git.kernel.org/pub/scm/linux/kernel/git/mdraid/linux into for-6.16/block

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Pull MD changes from Yu Kuai:

- Fix that normal IO can be starved by sync IO, found by mkfs on newly
  created large raid5, with some clean up patches for bdev inflight
  counters.

* tag 'md-6.16-20250513' of https://git.kernel.org/pub/scm/linux/kernel/git/mdraid/linux:
  md: clean up accounting for issued sync IO
  md: fix is_mddev_idle()
  md: add a new api sync_io_depth
  md: record dm-raid gendisk in mddev
  block: export API to get the number of bdev inflight IO
  block: clean up blk_mq_in_flight_rw()
  block: WARN if bdev inflight counter is negative
  block: reuse part_in_flight_rw for part_in_flight
  blk-mq: remove blk_mq_in_flight()
This commit is contained in:
Jens Axboe
2025-05-13 07:10:52 -06:00
parent 2d8951aee8 752d0464b7
commit cf724e5e41
13 changed files with 197 additions and 148 deletions
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22
block/blk-mq.c
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@@ -89,7 +89,7 @@ struct mq_inflight {
unsigned int inflight[2];
};
static bool blk_mq_check_inflight(struct request *rq, void *priv)
static bool blk_mq_check_in_driver(struct request *rq, void *priv)
{
struct mq_inflight *mi = priv;
@@ -101,24 +101,14 @@ static bool blk_mq_check_inflight(struct request *rq, void *priv)
return true;
}
unsigned int blk_mq_in_flight(struct request_queue *q,
struct block_device *part)
void blk_mq_in_driver_rw(struct block_device *part, unsigned int inflight[2])
{
struct mq_inflight mi = { .part = part };
blk_mq_queue_tag_busy_iter(q, blk_mq_check_inflight, &mi);
return mi.inflight[0] + mi.inflight[1];
}
void blk_mq_in_flight_rw(struct request_queue *q, struct block_device *part,
unsigned int inflight[2])
{
struct mq_inflight mi = { .part = part };
blk_mq_queue_tag_busy_iter(q, blk_mq_check_inflight, &mi);
inflight[0] = mi.inflight[0];
inflight[1] = mi.inflight[1];
blk_mq_queue_tag_busy_iter(bdev_get_queue(part), blk_mq_check_in_driver,
&mi);
inflight[READ] = mi.inflight[READ];
inflight[WRITE] = mi.inflight[WRITE];
}
#ifdef CONFIG_LOCKDEP