From f099a108cabf72a1184b1e14e4a09f4ca3375750 Mon Sep 17 00:00:00 2001 From: Chengming Zhou Date: Fri, 4 Aug 2023 15:06:09 +0800 Subject: blk-iocost: fix queue stats accounting The q->stats->accounting is not only used by iocost, but iocost only increase this counter, never decrease it. So queue stats accounting will always enabled after using iocost once. Signed-off-by: Chengming Zhou Acked-by: Tejun Heo Link: https://lore.kernel.org/r/20230804070609.31623-1-chengming.zhou@linux.dev Signed-off-by: Jens Axboe --- block/blk-iocost.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'block/blk-iocost.c') diff --git a/block/blk-iocost.c b/block/blk-iocost.c index dd64e2066f01..089fcb9cfce3 100644 --- a/block/blk-iocost.c +++ b/block/blk-iocost.c @@ -3301,11 +3301,12 @@ static ssize_t ioc_qos_write(struct kernfs_open_file *of, char *input, if (qos[QOS_MIN] > qos[QOS_MAX]) goto einval; - if (enable) { + if (enable && !ioc->enabled) { blk_stat_enable_accounting(disk->queue); blk_queue_flag_set(QUEUE_FLAG_RQ_ALLOC_TIME, disk->queue); ioc->enabled = true; - } else { + } else if (!enable && ioc->enabled) { + blk_stat_disable_accounting(disk->queue); blk_queue_flag_clear(QUEUE_FLAG_RQ_ALLOC_TIME, disk->queue); ioc->enabled = false; } -- cgit v1.2.3