diff options
| author | weiping zhang | 2017-09-22 23:36:28 +0800 |
|---|---|---|
| committer | Jens Axboe | 2017-11-03 12:21:06 -0600 |
| commit | c2e82a234873d905260a3bd0aca9577e85619bda (patch) | |
| tree | 1d9b5b149222baab4164890c35e8e45bbb9b9af7 /security | |
| parent | a116895fc7b61de4f26548c9b635a06515ec7563 (diff) | |
blk-mq: fix nr_requests wrong value when modify it from sysfs
if blk-mq use "none" io scheduler, nr_request get a wrong value when
input a number > tag_set->queue_depth. blk_mq_tag_update_depth will get
the smaller one min(nr, set->queue_depth), and then q->nr_request get a
wrong value.
Reproduce:
echo none > /sys/block/nvme0n1/queue/scheduler
echo 1000000 > /sys/block/nvme0n1/queue/nr_requests
cat /sys/block/nvme0n1/queue/nr_requests
1000000
Signed-off-by: weiping zhang <zhangweiping@didichuxing.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions