[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 <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
yshchan · Mar 22, 2006 · 9d41415 · 9d41415
1 parent 8dfcc9b
commit 9d41415
Showing 1 changed file with 3 additions and 2 deletions.
diff --git 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 */