linux-kernel - Re: [PATCH v2 3/3] f2fs: Add the 'whint_mode' mount option to f2fs documentation

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Message-ID: <20180131221957.GD12901@jaegeuk-macbookpro.roam.corp.google.com>
Date:   Wed, 31 Jan 2018 14:19:57 -0800
From:   Jaegeuk Kim <jaegeuk@...nel.org>
To:     Hyunchul Lee <hyc.lee@...il.com>
Cc:     Chao Yu <yuchao0@...wei.com>,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        kernel-team@....com, Hyunchul Lee <cheol.lee@....com>
Subject: Re: [PATCH v2 3/3] f2fs: Add the 'whint_mode' mount option to f2fs
 documentation

Hi Hyunchul,

I've added the policy in the Doc as wel.

Thanks,

On 01/31, Hyunchul Lee wrote:
> From: Hyunchul Lee <cheol.lee@....com>
> 
> Signed-off-by: Hyunchul Lee <cheol.lee@....com>
> ---
>  Documentation/filesystems/f2fs.txt | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt
> index 13c2ff0..414a160 100644
> --- a/Documentation/filesystems/f2fs.txt
> +++ b/Documentation/filesystems/f2fs.txt
> @@ -174,6 +174,12 @@ offgrpjquota           Turn off group journelled quota.
>  offprjjquota           Turn off project journelled quota.
>  quota                  Enable plain user disk quota accounting.
>  noquota                Disable all plain disk quota option.
> +whint_mode=%s          Control which write hints are passed down to block
> +                       layer. This supports "off", "user-based", and
> +                       "fs-based".  In "off" mode (default), f2fs does not pass
> +                       down hints. In "user-based" mode, f2fs tries to pass
> +                       down hints given by users. And in "fs-based" mode, f2fs
> +                       passes down hints with its policy.
>  
>  ================================================================================
>  DEBUGFS ENTRIES
> -- 
> 1.9.1