Use blkcg_css instead of open coding it, and switch to a slightly
more natural for loop.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
block/blk-cgroup.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index 8da00ddc1766e..5684a8ce1f755 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -2038,15 +2038,11 @@ bool blk_cgroup_congested(void)
bool ret = false;
rcu_read_lock();
- css = kthread_blkcg();
- if (!css)
- css = task_css(current, io_cgrp_id);
- while (css) {
+ for (css = blkcg_css(); css; css = css->parent) {
if (atomic_read(&css->cgroup->congestion_count)) {
ret = true;
break;
}
- css = css->parent;
}
rcu_read_unlock();
return ret;
--
2.30.2
