Module Name: src
Committed By: yamt
Date: Sat Aug 1 15:30:33 UTC 2009
Modified Files:
src/sys/uvm: uvm_map.c
Log Message:
_uvm_map_sanity: fix a race which causes "stale hint".
To generate a diff of this commit:
cvs rdiff -u -r1.271 -r1.272 src/sys/uvm/uvm_map.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/uvm/uvm_map.c
diff -u src/sys/uvm/uvm_map.c:1.271 src/sys/uvm/uvm_map.c:1.272
--- src/sys/uvm/uvm_map.c:1.271 Wed Jun 10 01:55:33 2009
+++ src/sys/uvm/uvm_map.c Sat Aug 1 15:30:33 2009
@@ -1,4 +1,4 @@
-/* $NetBSD: uvm_map.c,v 1.271 2009/06/10 01:55:33 yamt Exp $ */
+/* $NetBSD: uvm_map.c,v 1.272 2009/08/01 15:30:33 yamt Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
@@ -71,7 +71,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: uvm_map.c,v 1.271 2009/06/10 01:55:33 yamt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: uvm_map.c,v 1.272 2009/08/01 15:30:33 yamt Exp $");
#include "opt_ddb.h"
#include "opt_uvmhist.h"
@@ -502,6 +502,7 @@
bool first_free_found = false;
bool hint_found = false;
const struct vm_map_entry *e;
+ struct vm_map_entry *hint = map->hint;
e = &map->header;
for (;;) {
@@ -512,7 +513,7 @@
map->first_free, e);
return -1;
}
- if (map->hint == e) {
+ if (hint == e) {
hint_found = true;
}
