Re: Kernel deadlock using nbd over acenic driver.

[Peter T. Breuer]

"Oliver Xymoron wrote:"
> On Thu, 16 May 2002, Peter T. Breuer wrote:
> > Any way of making sure that send_msg on the socket can always get the
> > (known a priori) buffers it needs?
> 
> Not at present. Note that we also need reservations on the receive side
> for ACK handling which is "interesting".

One thing at a time.  What if there is a zone "ceiling" that we keep
lowered exactly until it is time for the process that does the send_msg
to run, when we raise the ceiling.  (I don't know how this VM stuff
works in detail inside - this is an invitation to list the objections).
The scheduler could presumably be trained to muck with the ceilings
according to flags on the process (task?) structs.

Peter