scsi hangs [drow at cs.cmu.edu: Re: CD-writers] (fwd)

[Paul Mackerras]

Brad Midgley <brad at pht.com> wrote:

> what was the result of testing this patch? i see it isn't present at vger.
> but does it make scsi activity safer? does it need more testing? should i
> test it as-is?

[patch to drivers/scsi/sd.c snipped]

It turns out that patch isn't necessary - all that was needed is to do
spin_lock_irqsave(&io_request_lock, flags) before calling the scsi
done function in the mesh driver (and spin_unlock_irqrestore after).
That's done, in different forms, both in vger and Linus' 2.2.0-pre2
and later, so it should be OK now.

Paul.

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