[XFS] Export pagevec_lookup for use on the XFS page writeout path,

[karo-tx-linux.git] / include / asm-arm / memory.h

diff --git a/include/asm-arm/memory.h b/include/asm-arm/memory.h
index a547ee598c6c9f2e1fa8968fb96be1a9c9ee0712..3d7f08bd9030f84e7828c99db876d216032066d6 100644 (file)
--- a/include/asm-arm/memory.h
+++ b/include/asm-arm/memory.h
@@ -57,6 +57,12 @@
 #define __phys_to_virt(x)      ((x) - PHYS_OFFSET + PAGE_OFFSET)
 #endif
 
+/*
+ * Convert a physical address to a Page Frame Number and back
+ */
+#define        __phys_to_pfn(paddr)    ((paddr) >> PAGE_SHIFT)
+#define        __pfn_to_phys(pfn)      ((pfn) << PAGE_SHIFT)
+
 /*
  * The module space lives between the addresses given by TASK_SIZE
  * and PAGE_OFFSET - it must be within 32MB of the kernel text.
@@ -122,6 +128,7 @@ static inline void *phys_to_virt(unsigned long x)
  */
 #define __pa(x)                        __virt_to_phys((unsigned long)(x))
 #define __va(x)                        ((void *)__phys_to_virt((unsigned long)(x)))
+#define pfn_to_kaddr(pfn)      __va((pfn) << PAGE_SHIFT)
 
 /*
  * Virtual <-> DMA view memory address translations