Merge master.kernel.org:/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog

[linux-2.6-omap-h63xx.git] / include / asm-mips / page.h

diff --git a/include/asm-mips/page.h b/include/asm-mips/page.h
index 4035ec79ecd494415bceccdc32f91d31e388aee6..6b97744f00cd7a79bf015daa06a060219dea5bc2 100644 (file)
--- a/include/asm-mips/page.h
+++ b/include/asm-mips/page.h
@@ -9,7 +9,6 @@
 #ifndef _ASM_PAGE_H
 #define _ASM_PAGE_H
 
-#include <linux/config.h>
 
 #ifdef __KERNEL__
 
@@ -145,6 +144,25 @@ typedef struct { unsigned long pgprot; } pgprot_t;
 #endif
 #endif
 
+#ifdef CONFIG_FLATMEM
+
+#define pfn_valid(pfn)         ((pfn) < max_mapnr)
+
+#elif defined(CONFIG_NEED_MULTIPLE_NODES)
+
+#define pfn_valid(pfn)                                                 \
+({                                                                     \
+       unsigned long __pfn = (pfn);                                    \
+       int __n = pfn_to_nid(__pfn);                                    \
+       ((__n >= 0) ? (__pfn < NODE_DATA(__n)->node_start_pfn +         \
+                              NODE_DATA(__n)->node_spanned_pages)      \
+                   : 0);                                               \
+})
+
+#else
+#error Provide a definition of pfn_valid
+#endif
+
 #define virt_to_page(kaddr)    pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
 #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)