linux-kernel - Re: [PATCH v3 3/3] blk-wbt: doc: Update the doc of the wbt_lat

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Message-ID: <61c5b01f-37b6-5c02-2b12-fdb7216e4888@huaweicloud.com>
Date: Mon, 28 Jul 2025 09:28:47 +0800
From: Yu Kuai <yukuai1@...weicloud.com>
To: Tang Yizhou <yizhou.tang@...pee.com>, axboe@...nel.dk, hch@....de,
 jack@...e.cz
Cc: linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
 tangyeechou@...il.com, "yukuai (C)" <yukuai3@...wei.com>
Subject: Re: [PATCH v3 3/3] blk-wbt: doc: Update the doc of the wbt_lat_usec
 interface

在 2025/07/28 1:39, Tang Yizhou 写道:
> From: Tang Yizhou <yizhou.tang@...pee.com>
> 
> The symbol wb_window_usec cannot be found. Update the doc to reflect the
> latest implementation, in other words, the debugfs interface
> 'curr_win_nsec'.
> 
> Signed-off-by: Tang Yizhou <yizhou.tang@...pee.com>
> ---
>   Documentation/ABI/stable/sysfs-block | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
Reviewed-by: Yu Kuai <yukuai3@...wei.com>
Thanks

> diff --git a/Documentation/ABI/stable/sysfs-block b/Documentation/ABI/stable/sysfs-block
> index 4ba771b56b3b..a3cf841ebdff 100644
> --- a/Documentation/ABI/stable/sysfs-block
> +++ b/Documentation/ABI/stable/sysfs-block
> @@ -731,7 +731,7 @@ Contact:	linux-block@...r.kernel.org
>   Description:
>   		[RW] If the device is registered for writeback throttling, then
>   		this file shows the target minimum read latency. If this latency
> -		is exceeded in a given window of time (see wb_window_usec), then
> +		is exceeded in a given window of time (see curr_win_nsec), then
>   		the writeback throttling will start scaling back writes. Writing
>   		a value of '0' to this file disables the feature. Writing a
>   		value of '-1' to this file resets the value to the default
>