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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 <[email protected]>
Cc: Hugh Dickins <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Dave McCracken 2006-09-25 23:31:48 -07:00 • committed by Linus Torvalds
commit 46a82b2d55
39 changed files with 117 additions and 90 deletions
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8
include/asm-frv/pgtable.h
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@ -217,7 +217,7 @@ static inline pud_t *pud_offset(pgd_t *pgd, unsigned long address)
}
#define pgd_page(pgd) (pud_page((pud_t){ pgd }))
#define pgd_page_kernel(pgd) (pud_page_kernel((pud_t){ pgd }))
#define pgd_page_vaddr(pgd) (pud_page_vaddr((pud_t){ pgd }))
/*
* allocating and freeing a pud is trivial: the 1-entry pud is
@ -246,7 +246,7 @@ static inline void pud_clear(pud_t *pud) { }
#define set_pud(pudptr, pudval) set_pmd((pmd_t *)(pudptr), (pmd_t) { pudval })
#define pud_page(pud) (pmd_page((pmd_t){ pud }))
#define pud_page_kernel(pud) (pmd_page_kernel((pmd_t){ pud }))
#define pud_page_vaddr(pud) (pmd_page_vaddr((pmd_t){ pud }))
/*
* (pmds are folded into pgds so this doesn't get actually called,
@ -362,7 +362,7 @@ static inline pmd_t *pmd_offset(pud_t *dir, unsigned long address)
#define pmd_bad(x) (pmd_val(x) & xAMPRx_SS)
#define pmd_clear(xp) do { __set_pmd(xp, 0); } while(0)
#define pmd_page_kernel(pmd) \
#define pmd_page_vaddr(pmd) \
((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
#ifndef CONFIG_DISCONTIGMEM
@ -458,7 +458,7 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
#define pte_index(address) \
(((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset_kernel(dir, address) \
((pte_t *) pmd_page_kernel(*(dir)) + pte_index(address))
((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address))
#if defined(CONFIG_HIGHPTE)
#define pte_offset_map(dir, address) \