[PATCH] Standardize pxx_page macros

One of the changes necessary for shared page tables is to standardize the
pxx_page macros.  pte_page and pmd_page have always returned the struct
page associated with their entry, while pte_page_kernel and pmd_page_kernel
have returned the kernel virtual address.  pud_page and pgd_page, on the
other hand, return the kernel virtual address.

Shared page tables needs pud_page and pgd_page to return the actual page
structures.  There are very few actual users of these functions, so it is
simple to standardize their usage.

Since this is basic cleanup, I am submitting these changes as a standalone
patch.  Per Hugh Dickins' comments about it, I am also changing the
pxx_page_kernel macros to pxx_page_vaddr to clarify their meaning.

Signed-off-by: Dave McCracken <dmccr@us.ibm.com>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/include/asm-sh/pgtable-2level.h b/include/asm-sh/pgtable-2level.h
index b0528aa3cb1f..b525db6f61c6 100644
--- a/include/asm-sh/pgtable-2level.h
+++ b/include/asm-sh/pgtable-2level.h
@@ -50,9 +50,12 @@ static inline void pgd_clear (pgd_t * pgdp) 	{ }
 #define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval)
 #define set_pgd(pgdptr, pgdval) (*(pgdptr) = pgdval)
 
-#define pgd_page(pgd) \
+#define pgd_page_vaddr(pgd) \
 ((unsigned long) __va(pgd_val(pgd) & PAGE_MASK))
 
+#define pgd_page(pgd) \
+        (phys_to_page(pgd_val(pgd)))
+
 static inline pmd_t * pmd_offset(pgd_t * dir, unsigned long address)
 {
         return (pmd_t *) dir;