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In vm_page_lookup() check the root of the vm object's splay tree for the

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desired page before calling vm_page_splay().
This commit is contained in:
Alan Cox 2003-12-31 19:02:01 +00:00
parent db785f7f72
commit 4804edb44f
1 changed files with 5 additions and 3 deletions
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8
sys/vm/vm_page.c
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@ -649,9 +649,11 @@ vm_page_lookup(vm_object_t object, vm_pindex_t pindex)
vm_page_t m;
VM_OBJECT_LOCK_ASSERT(object, MA_OWNED);
m = vm_page_splay(pindex, object->root);
if ((object->root = m) != NULL && m->pindex != pindex)
m = NULL;
if ((m = object->root) != NULL && m->pindex != pindex) {
m = vm_page_splay(pindex, m);
if ((object->root = m)->pindex != pindex)
m = NULL;
}
return (m);
}