linux-kernel - Re: [PATCHSET block#for-2.6.36-post] block: replace barrier with sequenced flush

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Date:	Thu, 19 Aug 2010 12:22:45 +0200
From:	Tejun Heo <tj@...nel.org>
To:	Christoph Hellwig <hch@....de>
CC:	jaxboe@...ionio.com, linux-fsdevel@...r.kernel.org,
	linux-scsi@...r.kernel.org, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-raid@...r.kernel.org,
	James.Bottomley@...e.de, tytso@....edu, chris.mason@...cle.com,
	swhiteho@...hat.com, konishi.ryusuke@....ntt.co.jp,
	dm-devel@...hat.com, vst@...b.net, jack@...e.cz,
	rwheeler@...hat.com, hare@...e.de
Subject: Re: [PATCHSET block#for-2.6.36-post] block: replace barrier with
 sequenced flush

Hello,

On 08/19/2010 12:20 PM, Christoph Hellwig wrote:
> I said make_request based drivers, that is drivers taking bios.

Right.  Gees, it's confusing.

> These get bios directly from __generic_make_request and need to deal
> with REQ_FLUSH/FUA themselves.  We have quite a few more than just
> dm/md of this kind:
>
> arch/powerpc/sysdev/axonram.c
> drivers/block/aoe/aoeblk.c
> drivers/block/brd.c

I'll try to convert these three.

> drivers/block/drbd/drbd_main.c

I'd rather leave drbd to its maintainers.

> drivers/block/loop.c

Already converted.

> drivers/block/pktcdvd.c
> drivers/block/ps3vram.c
> drivers/block/umem.c
> drivers/s390/block/dcssblk.c
> drivers/s390/block/xpram.c
> drivers/staging/zram/zram_drv.c

Will work on these.

Thanks.

-- 
tejun
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