diff options
| author | Bart Van Assche <[email protected]> | 2021-08-24 10:05:20 -0700 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2021-08-24 16:18:01 -0600 |
| commit | b6d2b054e8baaee53fd2d4854c63cbf0f2c6262a (patch) | |
| tree | f94f83b4397f3d895bec7d974ace8e79305627ef /lib/test_overflow.c | |
| parent | a9ed27a764156929efe714033edb3e9023c5f321 (diff) | |
mq-deadline: Fix request accounting
The block layer may call the I/O scheduler .finish_request() callback
without having called the .insert_requests() callback. Make sure that the
mq-deadline I/O statistics are correct if the block layer inserts an I/O
request that bypasses the I/O scheduler. This patch prevents that lower
priority I/O is delayed longer than necessary for mixed I/O priority
workloads.
Cc: Niklas Cassel <[email protected]>
Cc: Damien Le Moal <[email protected]>
Cc: Hannes Reinecke <[email protected]>
Reported-by: Niklas Cassel <[email protected]>
Fixes: 08a9ad8bf607 ("block/mq-deadline: Add cgroup support")
Signed-off-by: Bart Van Assche <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Niklas Cassel <[email protected]>
Tested-by: Niklas Cassel <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'lib/test_overflow.c')
0 files changed, 0 insertions, 0 deletions