Re: [linux-usb-devel] Re: USB hangs

[Matthew Dharm <mdharm-kernel _at_ xxxxxxxxxxxxxxxxxx>]

On Sun, Jan 11, 2004 at 08:11:58PM -0800, David Brownell wrote:
> 
> >>>	 Plus I'd
> >>>argue PF_MEMALLOC is a better solution anyway.
> >>
> >>It certainly seems like a more comprehensive fix for that
> >>particular class of problems!  :)
> >
> >
> >Is it really more comprehensive?  As I see it, it will only affect code
> >executed in the context of the usb-storage thread.  But, what about code
> >which is invoked in tasklets or other contexts?
> 
> Isn't it true that only that thread is allowed to
> submit usb-storage i/o requests?

That's very true.

What I'm concerned about is the downstream effects of a usb_submit_urb() or
the corresponding scatter-gather equivalents.

Matt

-- 
Matthew Dharm                              Home: mdharm-usb _at_ one-eyed-alien.net 
Maintainer, Linux USB Mass Storage Driver

You should try to see the techs say "three piece suit".
					-- The Chief
User Friendly, 11/23/1997

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