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Fix mb_ctor_clust and mb_dtor_clust to reference the appropriate zone,

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simplify setting refcnt

Reviewed by: andre, rwatson, and glebius
MFC after: 3 days
This commit is contained in:
Kip Macy 2007-04-04 21:27:01 +00:00
parent f3300398cb
commit 0f4d9d04ea
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=168374
1 changed files with 38 additions and 30 deletions
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68
sys/kern/kern_mbuf.c
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@ -395,32 +395,40 @@ mb_ctor_clust(void *mem, int size, void *arg, int how)
{
struct mbuf *m;
u_int *refcnt;
int type = 0;
int type;
uma_zone_t zone;
#ifdef INVARIANTS
trash_ctor(mem, size, arg, how);
#endif
m = (struct mbuf *)arg;
if (m != NULL) {
switch (size) {
case MCLBYTES:
type = EXT_CLUSTER;
break;
switch (size) {
case MCLBYTES:
type = EXT_CLUSTER;
zone = zone_clust;
break;
#if MJUMPAGESIZE != MCLBYTES
case MJUMPAGESIZE:
type = EXT_JUMBOP;
break;
case MJUMPAGESIZE:
type = EXT_JUMBOP;
zone = zone_jumbop;
break;
#endif
case MJUM9BYTES:
type = EXT_JUMBO9;
break;
case MJUM16BYTES:
type = EXT_JUMBO16;
break;
default:
panic("unknown cluster size");
break;
}
case MJUM9BYTES:
type = EXT_JUMBO9;
zone = zone_jumbo9;
break;
case MJUM16BYTES:
type = EXT_JUMBO16;
zone = zone_jumbo16;
break;
default:
panic("unknown cluster size");
break;
}
m = (struct mbuf *)arg;
refcnt = uma_find_refcnt(zone, mem);
*refcnt = 1;
if (m != NULL) {
m->m_ext.ext_buf = (caddr_t)mem;
m->m_data = m->m_ext.ext_buf;
m->m_flags |= M_EXT;
@ -428,12 +436,9 @@ mb_ctor_clust(void *mem, int size, void *arg, int how)
m->m_ext.ext_args = NULL;
m->m_ext.ext_size = size;
m->m_ext.ext_type = type;
m->m_ext.ref_cnt = uma_find_refcnt(zone_clust, mem);
*m->m_ext.ref_cnt = 1;
} else {
refcnt = uma_find_refcnt(zone_clust, mem);
*refcnt = 1;
m->m_ext.ref_cnt = refcnt;
}
return (0);
}
@ -443,11 +448,14 @@ mb_ctor_clust(void *mem, int size, void *arg, int how)
static void
mb_dtor_clust(void *mem, int size, void *arg)
{
KASSERT(*(uma_find_refcnt(zone_clust, mem)) <= 1,
("%s: refcnt incorrect %u", __func__,
*(uma_find_refcnt(zone_clust, mem))) );
#ifdef INVARIANTS
uma_zone_t zone;
zone = m_getzone(size);
KASSERT(*(uma_find_refcnt(zone, mem)) <= 1,
("%s: refcnt incorrect %u", __func__,
*(uma_find_refcnt(zone, mem))) );
trash_dtor(mem, size, arg);
#endif
}