linux-kernel - [PATCH] block: fix aux stat accumulation destination

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Message-ID: <20251222021937.1280-1-shechenglong@xfusion.com>
Date: Mon, 22 Dec 2025 10:19:36 +0800
From: shechenglong <shechenglong@...sion.com>
To: <tj@...nel.org>, <josef@...icpanda.com>, <axboe@...nel.dk>,
	<yukuai@...as.com>
CC: <cgroups@...r.kernel.org>, <linux-block@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <stone.xulei@...sion.com>,
	<chenjialong@...sion.com>, shechenglong <shechenglong@...sion.com>
Subject: [PATCH] block: fix aux stat accumulation destination

Route bfqg_stats_add_aux() time accumulation into the destination
stats object instead of the source, aligning with other stat fields.

Signed-off-by: shechenglong <shechenglong@...sion.com>
---
 block/bfq-cgroup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/bfq-cgroup.c b/block/bfq-cgroup.c
index 9fb9f3533150..6a75fe1c7a5c 100644
--- a/block/bfq-cgroup.c
+++ b/block/bfq-cgroup.c
@@ -380,7 +380,7 @@ static void bfqg_stats_add_aux(struct bfqg_stats *to, struct bfqg_stats *from)
 	blkg_rwstat_add_aux(&to->merged, &from->merged);
 	blkg_rwstat_add_aux(&to->service_time, &from->service_time);
 	blkg_rwstat_add_aux(&to->wait_time, &from->wait_time);
-	bfq_stat_add_aux(&from->time, &from->time);
+	bfq_stat_add_aux(&to->time, &from->time);
 	bfq_stat_add_aux(&to->avg_queue_size_sum, &from->avg_queue_size_sum);
 	bfq_stat_add_aux(&to->avg_queue_size_samples,
 			  &from->avg_queue_size_samples);
-- 
2.43.0