linux-kernel - Re: [PATCH] f2fs: add missing doc for fault injection sysfs

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Message-ID: <0fb160e1-6948-d805-9262-63d436c01ad4@kernel.org>
Date:   Thu, 15 Dec 2022 22:38:05 +0800
From:   Chao Yu <chao@...nel.org>
To:     Yangtao Li <frank.li@...o.com>, jaegeuk@...nel.org
Cc:     linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] f2fs: add missing doc for fault injection sysfs

On 2022/12/15 22:14, Yangtao Li wrote:
> Hi Chao,
> 
>> -What:		/sys/fs/f2fs/<disk>/gc_mode
>> -Date:		October 2022
>> -Contact:	"Yangtao Li" <frank.li@...o.com>
>> -Description:	Show the current gc_mode as a string.
>> -		This is a read-only entry.
>   
>> -What:		/sys/fs/f2fs/<disk>/discard_urgent_util
>> -Date:		November 2022
>> -Contact:	"Yangtao Li" <frank.li@...o.com>
>> -Description:	When space utilization exceeds this, do background DISCARD aggressively.
>> -		Does DISCARD forcibly in a period of given min_discard_issue_time when the number
>> -		of discards is not 0 and set discard granularity to 1.
>> -		Default: 80
>> -
>> -What:		/sys/fs/f2fs/<disk>/hot_data_age_threshold
>> -Date:		November 2022
>> -Contact:	"Ping Xiong" <xiongping1@...omi.com>
>> -Description:	When DATA SEPARATION is on, it controls the age threshold to indicate
>> -		the data blocks as hot. By default it was initialized as 262144 blocks
>> -		(equals to 1GB).
>> -
>> -What:		/sys/fs/f2fs/<disk>/warm_data_age_threshold
>> -Date:		November 2022
>> -Contact:	"Ping Xiong" <xiongping1@...omi.com>
>> -Description:	When DATA SEPARATION is on, it controls the age threshold to indicate
>> -		the data blocks as warm. By default it was initialized as 2621440 blocks
>> -		(equals to 10GB).
> 
> Why delete other node descriptions, mistake?

Oh, my bad, I missed to handle merge confilct correctly, will
fix in v2.

Thanks,

> 
> Thx,
> Yangtao