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Date: Tue, 20 Jul 2004 15:30:19 -0700
From: Alfred Perlstein <alfred@freebsd.org>
To: Robert Watson <rwatson@FreeBSD.org>
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Subject: Re: cvs commit: src/sys/netinet raw_ip.c
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* Robert Watson <rwatson@FreeBSD.org> [040720 13:52] wrote:
> rwatson     2004-07-20 20:52:30 UTC
> 
>   FreeBSD src repository
> 
>   Modified files:
>     sys/netinet          raw_ip.c 
>   Log:
>   M_PREPEND() the IP header on to the front of an outgoing raw IP packet
>   using M_DONTWAIT rather than M_WAITOK to avoid sleeping on memory
>   while holding a mutex.

Isn't there a call we can add to mget/malloc/zalloc to do this:

if (flags & _WAIT)
   ask_witness_if_we_can_sleep

deferring to the actual tsleep call will never catch as many.

If you don't have the time, I may be able to get to this tonight.


-- 
- Alfred Perlstein
- Research Engineering Development Inc.
- email: bright@mu.org cell: 408-480-4684