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| author | Yu Kuai <yukuai3@huawei.com> | 2020-11-26 06:18:34 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-12-02 22:44:20 +0300 |
| commit | acaf523a7bf226b28504306c1cfee194520123b3 (patch) | |
| tree | 1276fc9123fe78d2ac96b50e9b913063161d919f /block/blk-map.c | |
| parent | b0d97557ebfc9d5ba5f2939339a9fdd267abafeb (diff) | |
| download | linux-acaf523a7bf226b28504306c1cfee194520123b3.tar.xz | |
blk-throttle: don't check whether or not lower limit is valid if CONFIG_BLK_DEV_THROTTLING_LOW is off
blk_throtl_update_limit_valid() will search for descendants to see if
'LIMIT_LOW' of bps/iops and READ/WRITE is nonzero. However, they're always
zero if CONFIG_BLK_DEV_THROTTLING_LOW is not set, furthermore, a lot of
time will be wasted to iterate descendants.
Thus do nothing in blk_throtl_update_limit_valid() in such situation.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-map.c')
0 files changed, 0 insertions, 0 deletions