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SubjectRe: smp dead lock of io_request_lock/queue_lock patch
On Mon, Jan 12 2004, Christoph Hellwig wrote:
> On Mon, Jan 12, 2004 at 02:51:42PM -0500, 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'm wondering whether we want it now that 2.4 is basically frozen, but
> I don't think there was a strong case against it say 4 or 5 month ago.
> OTOH given that success (or lack thereof) I had pushing core changes
> through Marcelo the chances it had even if scsi folks ACKed wouldn't
> have been too high.

That's the key point, is it appropriate to merge now...

But I can completely back Doug on the point he made wrt pusing stuff
back to mainline - it was hard, because we deviated too much. And that
is also what I stressed would be the most important argument for merging
the iorl + scsi core changes.

> > 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.
> I personally just don't care enough about 2.4 anymore, so I don't think
> I'll invest major amounts of time into it. Even though the scsi changes
> you've done are fairly huge I'm wondering whether we should just throw
> it all in anyway - given that you said you'll have to care for the 2.4
> scsi stack for a longer time for RH and no one else seems to be interested
> doing maintaince.


Jens Axboe

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