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A slight restyling of the previous fix and make the way the

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reference count is initialised to zero to be more kosher.

Reviewed by:	Bosko Milekic <bmilekic@technokratis.com>
Spotted by:	jdp and Jake Burkholder <jburkhol@home.com> respectively
This commit is contained in:
dwmalone 2000-08-20 00:02:48 +00:00
parent 4f760044b9
commit 936d03c505
1 changed files with 4 additions and 8 deletions
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12
sys/sys/mbuf.h
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@ -289,15 +289,11 @@ union mext_refcnt {
#define _MEXT_ALLOC_CNT(m_cnt) MBUFLOCK( \
union mext_refcnt *__mcnt; \
\
if ((mext_refcnt_free == NULL) && (m_alloc_ref(1) == 0)) \
panic("mbuf subsystem: out of ref counts!"); \
__mcnt = mext_refcnt_free; \
if (__mcnt == NULL) { \
if (m_alloc_ref(1) != 0) \
__mcnt = mext_refcnt_free; \
else \
panic("mbuf subsystem: out of ref counts!"); \
} \
mext_refcnt_free = __mcnt->next_ref; \
__mcnt->next_ref = NULL; \
__mcnt->refcnt = 0; \
(m_cnt) = __mcnt; \
mbstat.m_refree--; \
)
@ -314,7 +310,7 @@ union mext_refcnt {
struct mbuf *__mmm = (m); \
\
_MEXT_ALLOC_CNT(__mmm->m_ext.ref_cnt); \
atomic_set_long(&(__mmm->m_ext.ref_cnt->refcnt), 1); \
MEXT_ADD_REF(__mmm); \
} while (0)
/*