From 9d41415221214ca4820b9464dfa548e2f20e7dd5 Mon Sep 17 00:00:00 2001 From: Nick Piggin 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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- 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 8cef69d462f2..9ea629c02a4b 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 */