Re: [PATCH] queue barrier support

From: James Bottomley (James.Bottomley@SteelEye.com)
Date: Fri Feb 15 2002 - 12:48:44 EST


mason@suse.com said:
> I'm thinking about dropping the scsi parts of the 2.4 barrier patch,
> and just worrying about making ide drives flush things correctly.
> The hard stuff on error recovery can be tackled in 2.5 and (maybe)
> ported back later.

That's probably best. I do agree that 2.5 is the place to play around with
SCSI error handling first.

I'm willing to help re-do the error handler, since I've always thought that
abort isn't a good first line of defence because it actually adds to the
command burden of a failing drive.

Jens, if you want to share the code you already have (or point me to the
bitkeeper repository where you keep it) I'll look it over.

As far as the back-port to 2.4, as long as you only support SCSI drivers that
use the new error handler (so we don't have to worry about the obsolete one)
that should be reasonably easy.

James

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