linux-kernel - Re: [PATCH v7 1/1] f2fs: dax: implement direct access

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Message-ID: <124231e8-d3f5-470d-36e4-77e07cf55403@huawei.com>
Date:   Tue, 18 Jul 2017 14:47:32 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     sunqiuyang <sunqiuyang@...wei.com>, <linux-kernel@...r.kernel.org>,
        <linux-fsdevel@...r.kernel.org>,
        <linux-f2fs-devel@...ts.sourceforge.net>
CC:     <jaegeuk@...nel.org>, <chao@...nel.org>
Subject: Re: [PATCH v7 1/1] f2fs: dax: implement direct access

On 2017/7/18 11:45, sunqiuyang wrote:
> From: Qiuyang Sun <sunqiuyang@...wei.com>
> 
> This patch implements Direct Access (DAX) in F2FS, including:
> - a mount option to choose whether to enable DAX or not
> - read/write and mmap of regular files in the DAX way
> - zero-out of unaligned partial blocks in the DAX way
> - garbage collection of DAX files, by mapping both old and new physical
>   addresses of a data page into memory and copy data between them directly
> - incompatibility of DAX with inline data, atomic or volatile write, etc.
> 
> Signed-off-by: Qiuyang Sun <sunqiuyang@...wei.com>

Reviewed-by: Chao Yu <yuchao0@...wei.com>