linux-kernel - Re: lift the xfs writepage code into iomap v3

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Message-ID: <BYAPR04MB5816C29CC419B748F03BF5BAE7DF0@BYAPR04MB5816.namprd04.prod.outlook.com>
Date:   Wed, 31 Jul 2019 06:04:59 +0000
From:   Damien Le Moal <Damien.LeMoal@....com>
To:     "Darrick J. Wong" <darrick.wong@...cle.com>,
        Christoph Hellwig <hch@....de>
CC:     Andreas Gruenbacher <agruenba@...hat.com>,
        "linux-xfs@...r.kernel.org" <linux-xfs@...r.kernel.org>,
        "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: lift the xfs writepage code into iomap v3

Darrick,

On 2019/07/30 10:17, Darrick J. Wong wrote:
> On Mon, Jul 22, 2019 at 11:50:12AM +0200, Christoph Hellwig wrote:
>> Hi all,
>>
>> this series cleans up the xfs writepage code and then lifts it to
>> fs/iomap.c so that it could be use by other file system.  I've been
>> wanting to this for a while so that I could eventually convert gfs2
>> over to it, but I never got to it.  Now Damien has a new zonefs
>> file system for semi-raw access to zoned block devices that would
>> like to use the iomap code instead of reinventing it, so I finally
>> had to do the work.
> 
> I've posted a branch against -rc2 for us all to work from:
> 
> https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git/log/?h=iomap-writeback
> 
> and will be emailing the patches shortly to the list for completeness.

I rebased zonefs on this branch and all tests passed, no compilation problems
either. I will send a v2 of zonefs patch with all of Dave's comments addressed
shortly.

Thank you.

Best regards.



-- 
Damien Le Moal
Western Digital Research