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authorNick Piggin <npiggin@suse.de>2006-03-22 00:08:06 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-22 07:53:58 -0800
commit9d41415221214ca4820b9464dfa548e2f20e7dd5 (patch)
tree58db93aca7cf16ddf22a9d86f32c6f04c19d721c
parent8dfcc9ba27e2ed257e5de9539f7f03e57c2c0e33 (diff)
[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>
-rw-r--r--include/linux/page-flags.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 8cef69d462f..9ea629c02a4 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 */