From: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, Andi Kleen <andi@firstfloor.org>
Subject: [PATCH] i386 CPA fix - do not free reserved pages
Date: Fri, 13 Jul 2007 21:18:13 -0400 [thread overview]
Message-ID: <20070714011813.GA31649@Krystal> (raw)
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 <mathieu.desnoyers@polymtl.ca>
CC: Andi Kleen <andi@firstfloor.org>
---
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
next reply other threads:[~2007-07-14 1:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-14 1:18 Mathieu Desnoyers [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-07-03 14:06 2.6.22-rc6-mm1 bad_page events Alan Cox
2007-07-03 15:37 ` Mathieu Desnoyers
2007-07-03 16:26 ` Frederik Deweerdt
2007-07-03 17:33 ` [PATCH] i386 CPA fix - do not free reserved pages Mathieu Desnoyers
2007-07-03 19:20 ` Frederik Deweerdt
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