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>
diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index 82282e6..63bb261 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -579,8 +579,10 @@
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();