X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;ds=sidebyside;f=include%2Flinux%2Fpage-flags.h;h=6ab9cc46640fabaf456af34a532a7064f00345f4;hb=6a77f38946aaee1cd85eeec6cf4229b204c15071;hp=97325175d93bd219203a3e78bcd6319c5f2f52d2;hpb=87fc8d1bb10cd459024a742c6a10961fefcef18f;p=linux-2.6.git

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 97325175d..6ab9cc466 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -74,6 +74,7 @@
 #define PG_swapcache		16	/* Swap page: swp_entry_t in private */
 #define PG_mappedtodisk		17	/* Has blocks allocated on-disk */
 #define PG_reclaim		18	/* To be reclaimed asap */
+#define PG_nosave_free		19	/* Free, should not be written */
 
 
 /*
@@ -132,40 +133,32 @@ struct page_state {
 	unsigned long pgrotated;	/* pages rotated to tail of the LRU */
 };
 
-DECLARE_PER_CPU(struct page_state, page_states);
-
 extern void get_page_state(struct page_state *ret);
 extern void get_full_page_state(struct page_state *ret);
 extern unsigned long __read_page_state(unsigned offset);
+extern void __mod_page_state(unsigned offset, unsigned long delta);
 
 #define read_page_state(member) \
 	__read_page_state(offsetof(struct page_state, member))
 
-#define mod_page_state(member, delta)					\
-	do {								\
-		unsigned long flags;					\
-		local_irq_save(flags);					\
-		__get_cpu_var(page_states).member += (delta);		\
-		local_irq_restore(flags);				\
-	} while (0)
-
+#define mod_page_state(member, delta)	\
+	__mod_page_state(offsetof(struct page_state, member), (delta))
 
 #define inc_page_state(member)	mod_page_state(member, 1UL)
 #define dec_page_state(member)	mod_page_state(member, 0UL - 1)
 #define add_page_state(member,delta) mod_page_state(member, (delta))
 #define sub_page_state(member,delta) mod_page_state(member, 0UL - (delta))
 
-#define mod_page_state_zone(zone, member, delta)			\
-	do {								\
-		unsigned long flags;					\
-		local_irq_save(flags);					\
-		if (is_highmem(zone))					\
-			__get_cpu_var(page_states).member##_high += (delta);\
-		else if (is_normal(zone))				\
-			__get_cpu_var(page_states).member##_normal += (delta);\
-		else							\
-			__get_cpu_var(page_states).member##_dma += (delta);\
-		local_irq_restore(flags);				\
+#define mod_page_state_zone(zone, member, delta)				\
+	do {									\
+		unsigned offset;						\
+		if (is_highmem(zone))						\
+			offset = offsetof(struct page_state, member##_high);	\
+		else if (is_normal(zone))					\
+			offset = offsetof(struct page_state, member##_normal);	\
+		else								\
+			offset = offsetof(struct page_state, member##_dma);	\
+		__mod_page_state(offset, (delta));				\
 	} while (0)
 
 /*
@@ -238,6 +231,8 @@ extern unsigned long __read_page_state(unsigned offset);
 #define SetPagePrivate(page)	set_bit(PG_private, &(page)->flags)
 #define ClearPagePrivate(page)	clear_bit(PG_private, &(page)->flags)
 #define PagePrivate(page)	test_bit(PG_private, &(page)->flags)
+#define __SetPagePrivate(page)  __set_bit(PG_private, &(page)->flags)
+#define __ClearPagePrivate(page) __clear_bit(PG_private, &(page)->flags)
 
 #define PageWriteback(page)	test_bit(PG_writeback, &(page)->flags)
 #define SetPageWriteback(page)						\
@@ -277,6 +272,10 @@ extern unsigned long __read_page_state(unsigned offset);
 #define ClearPageNosave(page)		clear_bit(PG_nosave, &(page)->flags)
 #define TestClearPageNosave(page)	test_and_clear_bit(PG_nosave, &(page)->flags)
 
+#define PageNosaveFree(page)	test_bit(PG_nosave_free, &(page)->flags)
+#define SetPageNosaveFree(page)	set_bit(PG_nosave_free, &(page)->flags)
+#define ClearPageNosaveFree(page)		clear_bit(PG_nosave_free, &(page)->flags)
+
 #define PageMappedToDisk(page)	test_bit(PG_mappedtodisk, &(page)->flags)
 #define SetPageMappedToDisk(page) set_bit(PG_mappedtodisk, &(page)->flags)
 #define ClearPageMappedToDisk(page) clear_bit(PG_mappedtodisk, &(page)->flags)
@@ -286,7 +285,11 @@ extern unsigned long __read_page_state(unsigned offset);
 #define ClearPageReclaim(page)	clear_bit(PG_reclaim, &(page)->flags)
 #define TestClearPageReclaim(page) test_and_clear_bit(PG_reclaim, &(page)->flags)
 
+#ifdef CONFIG_HUGETLB_PAGE
 #define PageCompound(page)	test_bit(PG_compound, &(page)->flags)
+#else
+#define PageCompound(page)	0
+#endif
 #define SetPageCompound(page)	set_bit(PG_compound, &(page)->flags)
 #define ClearPageCompound(page)	clear_bit(PG_compound, &(page)->flags)