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| author | Liu Bo <bo.liu@linux.alibaba.com> | 2018-06-29 09:56:56 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-07-09 09:07:52 -0600 |
| commit | 43ada78781246cb36036f26158a645c17550ac54 (patch) | |
| tree | ad75c7e5855b6f756c8ff84b0ac71d6fbd4f6438 /block/blk-throttle.c | |
| parent | e1a413245a564683697a3d02ec197b72cf009b89 (diff) | |
| download | lwn-43ada78781246cb36036f26158a645c17550ac54.tar.gz lwn-43ada78781246cb36036f26158a645c17550ac54.zip | |
Block: blk-throttle: set low_valid immediately once one cgroup has io.low configured
Once one cgroup has io.low configured, @low_valid becomes true and other
cgroups won't switch it back whatsoever.
Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-throttle.c')
| -rw-r--r-- | block/blk-throttle.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/block/blk-throttle.c b/block/blk-throttle.c index 82282e6fdcf8..63bb261811dd 100644 --- a/block/blk-throttle.c +++ b/block/blk-throttle.c @@ -579,8 +579,10 @@ static void blk_throtl_update_limit_valid(struct throtl_data *td) struct throtl_grp *tg = blkg_to_tg(blkg); if (tg->bps[READ][LIMIT_LOW] || tg->bps[WRITE][LIMIT_LOW] || - tg->iops[READ][LIMIT_LOW] || tg->iops[WRITE][LIMIT_LOW]) + tg->iops[READ][LIMIT_LOW] || tg->iops[WRITE][LIMIT_LOW]) { low_valid = true; + break; + } } rcu_read_unlock(); |