Re: [PATCH] ide write barrier support

[Jeff Garzik]

Matthias Andree wrote:
> On Mon, 13 Oct 2003, Jens Axboe wrote:
>
>
> > Forward ported and tested today (with the dummy ext3 patch included),
> > works for me. Some todo's left, but I thought I'd send it out to gauge
> > interest. TODO:
> >
> > - Detect write cache setting and only issue SYNC_CACHE if write cache is
> >  enabled (not a biggy, all drives ship with it enabled)
>
>
> Yup, and I disable it on all drives at boot time at the latest.
>
> Is there a status document that lists
>
> - what SCSI drivers support write barriers
>   (I'm interested in sym53c8xx_2 if that matters)
>
> - what IDE drivers support write barriers
>   (VIA for AMD and Intel for PII/PIII/P4 chip sets here)

The device is the entity that does, or does not, support flush-cache... 
 All IDE chipsets support flush-cache... it's just another IDE command.

	Jeff



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