Re: More on write caching

To:	Andrew Morton <andrewm@xxxxxxxxxx>
Subject:	Re: More on write caching
From:	Jens Axboe <axboe@xxxxxxx>
Date:	Sat, 7 Jul 2001 13:13:28 +0200
Cc:	Steve Lord <lord@xxxxxxx>, Andrew Klaassen <ak@xxxxxxx>, linux-xfs@xxxxxxxxxxx
In-reply-to:	<3B469DDF.905AEC0B@xxxxxxxxxx>
References:	<ak@xxxxxxx> <20010706130636.C2814@xxxxxxx> <200107061738.f66Hcpb09219@xxxxxxxxxxxxxxxxxxxx> <3B469DDF.905AEC0B@xxxxxxxxxx>
Sender:	owner-linux-xfs@xxxxxxxxxxx

On Sat, Jul 07 2001, Andrew Morton wrote:
> For more sophisticated storage systems such as RAID controllers,
> I guess we'd have to propagate a SCSI write barrier command down to
> the controller itself.  I'm not sure that the Linux request
> and SCSI layers are up to doing that.  Have you looked into it?

I have, I wrote a barrier write patch some time ago. SCSI support is the
easy part, having the luxury of just setting a tag option.

-- 
Jens Axboe

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