From 9d41415221214ca4820b9464dfa548e2f20e7dd5 Mon Sep 17 00:00:00 2001
From: Nick Piggin <npiggin@suse.de>
Date: Wed, 22 Mar 2006 00:08:06 -0800
Subject: [PATCH] [PATCH] mm: page_state comment more
Clarify that preemption needs to be guarded against with the
__xxx_page_state functions.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
include/linux/page-flags.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 8cef69d462f2de..9ea629c02a4b98 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -86,8 +86,9 @@
* - The __xxx_page_state variants can be used safely when interrupts are
* disabled.
* - The __xxx_page_state variants can be used if the field is only
- * modified from process context, or only modified from interrupt context.
- * In this case, the field should be commented here.
+ * modified from process context and protected from preemption, or only
+ * modified from interrupt context. In this case, the field should be
+ * commented here.
*/
struct page_state {
unsigned long nr_dirty; /* Dirty writeable pages */
--
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