diff options
| author | Chengming Zhou <zhouchengming@bytedance.com> | 2023-08-04 09:06:09 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-08-10 00:04:14 +0200 |
| commit | f099a108cabf72a1184b1e14e4a09f4ca3375750 (patch) | |
| tree | 83155b0d8dfc15959c2c8da449cf9d970a1ce6ce /block/blk-iocost.c | |
| parent | block: don't make REQ_POLLED imply REQ_NOWAIT (diff) | |
| download | linux-f099a108cabf72a1184b1e14e4a09f4ca3375750.tar.xz linux-f099a108cabf72a1184b1e14e4a09f4ca3375750.zip | |
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 <zhouchengming@bytedance.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20230804070609.31623-1-chengming.zhou@linux.dev
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-iocost.c')
| -rw-r--r-- | block/blk-iocost.c | 5 |
1 files changed, 3 insertions, 2 deletions
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; } |