Index: sys/vm/vm_page.h
===================================================================
--- sys/vm/vm_page.h
+++ sys/vm/vm_page.h
@@ -537,6 +537,7 @@
 #define VM_ALLOC_INTERRUPT	1
 #define VM_ALLOC_SYSTEM		2
 #define	VM_ALLOC_CLASS_MASK	3
+#define	VM_ALLOC_NOZERO		0x0004	/* (g) Don't load a zero page */
 #define	VM_ALLOC_WAITOK		0x0008	/* (acf) Sleep and retry */
 #define	VM_ALLOC_WAITFAIL	0x0010	/* (acf) Sleep and return error */
 #define	VM_ALLOC_WIRED		0x0020	/* (acfgp) Allocate a wired page */
Index: sys/vm/vm_page.c
===================================================================
--- sys/vm/vm_page.c
+++ sys/vm/vm_page.c
@@ -4630,7 +4630,7 @@
 			*mp = NULL;
 			return (VM_PAGER_FAIL);
 		}
-	} else if ((allocflags & VM_ALLOC_NOCREAT) != 0) {
+	} else if ((allocflags & (VM_ALLOC_NOZERO | VM_ALLOC_NOCREAT)) != 0) {
 		*mp = NULL;
 		return (VM_PAGER_FAIL);
 	} else if ((m = vm_page_alloc(object, pindex, pflags)) == NULL) {