i386 CPA fix - do not free reserved pages
We have to use the same conditions found in change_page_attr in
global_tlb_flush regarding the conditions that leads to free the page.
It applies to 2.6.22-rc6-mm1 (as it been applied for the next one ?)
Signed-off-by: Mathieu Desnoyers <[email protected]>
CC: Andi Kleen <[email protected]>
---
arch/i386/mm/pageattr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6-lttng/arch/i386/mm/pageattr.c
===================================================================
--- linux-2.6-lttng.orig/arch/i386/mm/pageattr.c 2007-07-03 13:25:48.000000000 -0400
+++ linux-2.6-lttng/arch/i386/mm/pageattr.c 2007-07-03 13:28:34.000000000 -0400
@@ -247,7 +247,7 @@
list_for_each_entry_safe(pg, next, &l, lru) {
clear_bit(PG_arch_1, &pg->flags);
list_del(&pg->lru);
- if (page_private(pg) != 0)
+ if (PageReserved(pg) || !cpu_has_pse || page_private(pg) != 0)
continue;
ClearPagePrivate(pg);
__free_page(pg);
--
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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