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SubjectRe: smp dead lock of io_request_lock/queue_lock patch
Doug Ledford wrote:

> More or less. But part of it also is that a lot of the patches I've
> written are on top of other patches that people don't want (aka, the
> iorl patch). I've got a mlqueue patch that actually *really* should go
> into mainline because it solves a slew of various problems in one go,
> but the current version of the patch depends on some semantic changes
> made by the iorl patch. So, sorting things out can sometimes be
> difficult. But, I've been told to go ahead and do what I can as far as
> getting the stuff out, so I'm taking some time to try and get a bk tree
> out there so people can see what I'm talking about. Once I've got the
> full tree out there, then it might be possible to start picking and
> choosing which things to port against mainline so that they don't depend
> on patches like the iorl patch.

If it leads to a more stable kernel, I don't see why iorl can't go in
(user perspective) because RH is going to maintain it instead of trying
to find a developer who is competent and willing to do the boring task
of backfitting bugfixes to sub-optimal code.

The only problem I see would be getting testing before calling it
stable. Putting out a "giant SCSI patch" for test, then into a -test
kernel should solve that. The fact that RH is stuck supporting this for
at least five years is certainly both motivation and field test for any
changes ;-)

Clearly Marcello has the decision, but it looks from here as if
stability would be improved by something like this. Assuming that no
other vendor objects, of course.

--
bill davidsen <davidsen@tmr.com>
CTO TMR Associates, Inc
Doing interesting things with small computers since 1979
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