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| author | Yu Kuai <yukuai3@huawei.com> | 2025-05-06 20:48:59 +0800 |
|---|---|---|
| committer | Yu Kuai <yukuai3@huawei.com> | 2025-05-10 16:11:49 +0800 |
| commit | f2987c5816bda01a8ffdd4eb5dfaaa2b41b67039 (patch) | |
| tree | e2888571239e81a2341b39a04179b892e9903f13 /include/linux/part_stat.h | |
| parent | 6b6c3a97abdebfafa25ef0f4b6b0b8b412b57bbb (diff) | |
block: export API to get the number of bdev inflight IO
- rename part_in_{flight, flight_rw} to bdev_count_{inflight, inflight_rw}
- export bdev_count_inflight, to fix a problem in mdraid that foreground
IO can be starved by background sync IO in later patches
Link: https://lore.kernel.org/linux-raid/20250506124903.2540268-6-yukuai1@huaweicloud.com
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Diffstat (limited to 'include/linux/part_stat.h')
| -rw-r--r-- | include/linux/part_stat.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/part_stat.h b/include/linux/part_stat.h index c5e9cac0575e..eeeff2a04529 100644 --- a/include/linux/part_stat.h +++ b/include/linux/part_stat.h @@ -79,4 +79,6 @@ static inline void part_stat_set_all(struct block_device *part, int value) #define part_stat_local_read_cpu(part, field, cpu) \ local_read(&(part_stat_get_cpu(part, field, cpu))) +unsigned int bdev_count_inflight(struct block_device *part); + #endif /* _LINUX_PART_STAT_H */ |