]> www.infradead.org Git - users/hch/block.git/commitdiff
blk-cgroup: cleanup blk_cgroup_congested
authorChristoph Hellwig <hch@lst.de>
Mon, 18 Apr 2022 07:03:31 +0000 (09:03 +0200)
committerChristoph Hellwig <hch@lst.de>
Tue, 19 Apr 2022 14:41:59 +0000 (16:41 +0200)
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

index 8da00ddc1766ecb09aefe409c92e9abd79034a23..5684a8ce1f75523e50696918a435c74de6aa81d1 100644 (file)
@@ -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;