diff mbox series

[13/15] blk-cgroup: cleanup blk_cgroup_congested

Message ID 20220420042723.1010598-14-hch@lst.de (mailing list archive)
State New, archived
Headers show
Series [01/15] blk-cgroup: remove __bio_blkcg | expand

Commit Message

Christoph Hellwig April 20, 2022, 4:27 a.m. UTC 
Use blkcg_css instead of open coding it, and switch to a slightly
more natural for loop.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 block/blk-cgroup.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)
diff mbox series

Patch

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;