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hold the vm_mtx around vm_map_lookup_entry() and vm_map_findspace()

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This commit is contained in:
Andrew Gallatin 2001-06-06 14:07:52 +00:00
parent 4589be70fe
commit b8da8ef880
1 changed files with 4 additions and 1 deletions
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5
sys/alpha/osf1/osf1_misc.c
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@ -500,6 +500,7 @@ osf1_mmap(p, uap)
addr = round_page((vm_offset_t)0x10000UL);
len = (vm_offset_t)SCARG(&a, len);
map = &p->p_vmspace->vm_map;
mtx_lock(&vm_mtx);
if (!vm_map_findspace(map, addr, len, &newaddr)) {
SCARG(&a,addr) = (caddr_t) newaddr;
SCARG(&a, flags) |= (MAP_FIXED);
@ -509,7 +510,7 @@ osf1_mmap(p, uap)
uprintf("osf1_mmap:vm_map_findspace failed for: %p 0x%lx\n",
(caddr_t)addr, len);
#endif
mtx_unlock(&vm_mtx);
if (SCARG(uap, flags) & OSF1_MAP_SHARED)
SCARG(&a, flags) |= MAP_SHARED;
if (SCARG(uap, flags) & OSF1_MAP_PRIVATE)
@ -1645,10 +1646,12 @@ osf1_uswitch(p, uap)
zero = 0;
if (uap->cmd == OSF1_USC_GET) {
mtx_lock(&vm_mtx);
if (vm_map_lookup_entry(&(p->p_vmspace->vm_map),0, &entry))
p->p_retval[0] = OSF1_USW_NULLP;
else
p->p_retval[0] = 0;
mtx_unlock(&vm_mtx);
return(KERN_SUCCESS);
} else if (uap->cmd == OSF1_USC_SET)
if (uap->mask & OSF1_USW_NULLP) {