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authorDave McCracken <dmccr@us.ibm.com>2006-09-25 23:31:48 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-26 08:48:51 -0700
commit46a82b2d5591335277ed2930611f6acb4ce654ed (patch)
treee90bc1843701af2012bae92564f7109027a8244f /include/asm-um/pgtable.h
parentd2e7b7d0aa021847c59f882b066e7d3812902870 (diff)
downloadop-kernel-dev-46a82b2d5591335277ed2930611f6acb4ce654ed.zip
op-kernel-dev-46a82b2d5591335277ed2930611f6acb4ce654ed.tar.gz
[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>
Diffstat (limited to 'include/asm-um/pgtable.h')
-rw-r--r--include/asm-um/pgtable.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/asm-um/pgtable.h b/include/asm-um/pgtable.h
index ac64eb9..4862daf 100644
--- a/include/asm-um/pgtable.h
+++ b/include/asm-um/pgtable.h
@@ -349,7 +349,7 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
return pte;
}
-#define pmd_page_kernel(pmd) ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
+#define pmd_page_vaddr(pmd) ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
/*
* the pgd page can be thought of an array like this: pgd_t[PTRS_PER_PGD]
@@ -389,7 +389,7 @@ 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))
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
#define pte_offset_map_nested(dir, address) pte_offset_map(dir, address)
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