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[PATCH] Standardize pxx_page macros

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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>
This commit is contained in:
Dave McCracken
2006-09-25 23:31:48 -07:00
committed by Linus Torvalds
parent d2e7b7d0aa
commit 46a82b2d55
39 changed files with 117 additions and 90 deletions
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5
include/asm-um/pgtable-3level.h
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@ -74,11 +74,12 @@ extern inline void pud_clear (pud_t *pud)
set_pud(pud, __pud(0));
}
#define pud_page(pud) \
#define pud_page(pud) phys_to_page(pud_val(pud) & PAGE_MASK)
#define pud_page_vaddr(pud) \
((struct page *) __va(pud_val(pud) & PAGE_MASK))
/* Find an entry in the second-level page table.. */
#define pmd_offset(pud, address) ((pmd_t *) pud_page(*(pud)) + \
#define pmd_offset(pud, address) ((pmd_t *) pud_page_vaddr(*(pud)) + \
pmd_index(address))
static inline unsigned long pte_pfn(pte_t pte)