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Message-ID: <20220929074055.30080-3-shikemeng@huawei.com>
Date: Thu, 29 Sep 2022 15:40:54 +0800
From: Kemeng Shi <shikemeng@...wei.com>
To: <tj@...nel.org>, <axboe@...nel.dk>
CC: <cgroups@...r.kernel.org>, <linux-block@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <shikemeng@...wei.com>
Subject: [PATCH 2/3] block: Correct comment for scale_cookie_change
Default queue depth of iolatency_grp is unlimited, so we scale down
quickly(once by half) in scale_cookie_change. Remove the "subtract
1/16th" part which is not the truth.
Signed-off-by: Kemeng Shi <shikemeng@...wei.com>
---
block/blk-iolatency.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/blk-iolatency.c b/block/blk-iolatency.c
index a8cc5abe91e5..2666afd7abdb 100644
--- a/block/blk-iolatency.c
+++ b/block/blk-iolatency.c
@@ -364,7 +364,7 @@ static void scale_cookie_change(struct blk_iolatency *blkiolat,
}
/*
- * Change the queue depth of the iolatency_grp. We add/subtract 1/16th of the
+ * Change the queue depth of the iolatency_grp. We add 1/16th of the
* queue depth at a time so we don't get wild swings and hopefully dial in to
* fairer distribution of the overall queue depth.
*/
--
2.30.0
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