Re: [PATCH -next v2 4/9] blk-iocost: read params inside lock in sysfs apis

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To: Li Nan <linan122@xxxxxxxxxx>
Subject: Re: [PATCH -next v2 4/9] blk-iocost: read params inside lock in sysfs apis
From: Tejun Heo <tj@xxxxxxxxxx>
Date: Wed, 30 Nov 2022 10:16:24 -1000
Cc: josef@xxxxxxxxxxxxxx, axboe@xxxxxxxxx, cgroups@xxxxxxxxxxxxxxx, linux-block@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, yukuai3@xxxxxxxxxx, yi.zhang@xxxxxxxxxx
In-reply-to: <20221130132156.2836184-5-linan122@huawei.com>
References: <20221130132156.2836184-1-linan122@huawei.com> <20221130132156.2836184-5-linan122@huawei.com>

On Wed, Nov 30, 2022 at 09:21:51PM +0800, Li Nan wrote:
> From: Yu Kuai <yukuai3@xxxxxxxxxx>
> 
> Otherwise, user might get abnormal values if params is updated
> concurrently.
> 
> Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx>
> Signed-off-by: Li Nan <linan122@xxxxxxxxxx>

Acked-by: Tejun Heo <tj@xxxxxxxxxx>

-- 
tejun

References:
- [PATCH -next v2 0/9] iocost bugfix
  - From: Li Nan
- [PATCH -next v2 4/9] blk-iocost: read params inside lock in sysfs apis
  - From: Li Nan

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