Date: Thu, 25 Jul 1996 10:50:51 -0700 From: "Jin Guojun[ITG]" <jin@george.lbl.gov> To: bugs@freebsd.org Cc: mckusick@McKusick.COM Subject: A way to fix MFREE hanging the system Message-ID: <199607251750.KAA18676@george.lbl.gov>
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Hi folks,
Here is the way how SunOS 4.1.x to fix MFREE hanging the system.
Can we do the similar thing in BSD MFREE()? It is similar to what I mentioned
in last email.
I do not like to use panic() here. We may just print error message out
and bypass the free body. How do you think?
-Jin
----------------- I did not disclose Sun stuff -----------------------
----------------- This looks like orginal BSD (4.2?) stuff -----------
----------------- Why is it changed ? -------------------------------
/* @(#)mbuf.h 1.1 92/07/30 SMI; from UCB 7.10 2/8/88 */
/*
* Copyright (c) 1982, 1986, 1988 Regents of the University of California.
* All rights reserved.
......
......
#define MFREE(m, n) \
{ int ms = splimp(); \
if ((m)->m_type == MT_FREE) panic("mfree"); \
mbstat.m_mtypes[(m)->m_type]--; mbstat.m_mtypes[MT_FREE]++; \
(m)->m_type = MT_FREE; \
if (M_HASCL(m)) \
... ...
}
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