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o Simplify vm_map_unwire() by merging the second and third passes

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over the caller-specified region.
This commit is contained in:
Alan Cox 2002-06-08 19:00:40 +00:00
parent a32192cc4f
commit b2f3846aef
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=98052
1 changed files with 11 additions and 17 deletions
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28
sys/vm/vm_map.c
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@ -1576,23 +1576,6 @@ vm_map_unwire(vm_map_t map, vm_offset_t start, vm_offset_t end,
}
entry = entry->next;
}
if (first_entry == NULL) {
result = vm_map_lookup_entry(map, start, &first_entry);
KASSERT(result, ("vm_map_unwire: lookup failed"));
}
entry = first_entry;
while (entry != &map->header && entry->start < end) {
if (user_unwire)
entry->eflags &= ~MAP_ENTRY_USER_WIRED;
entry->wired_count--;
if (entry->wired_count == 0) {
/*
* Retain the map lock.
*/
vm_fault_unwire(map, entry->start, entry->end);
}
entry = entry->next;
}
rv = KERN_SUCCESS;
done:
need_wakeup = FALSE;
@ -1602,6 +1585,17 @@ done:
}
entry = first_entry;
while (entry != &map->header && entry->start < end) {
if (rv == KERN_SUCCESS) {
if (user_unwire)
entry->eflags &= ~MAP_ENTRY_USER_WIRED;
entry->wired_count--;
if (entry->wired_count == 0) {
/*
* Retain the map lock.
*/
vm_fault_unwire(map, entry->start, entry->end);
}
}
KASSERT(entry->eflags & MAP_ENTRY_IN_TRANSITION,
("vm_map_unwire: in-transition flag missing"));
entry->eflags &= ~MAP_ENTRY_IN_TRANSITION;