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authorHugh Dickins <hugh@veritas.com>2005-04-19 13:29:17 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org.(none)>2005-04-19 13:29:17 -0700
commit8f6c99c11ae63ce887686f3e51c412cc4d8d8a7d (patch)
tree4c3f29ce21f2a69f9105581c95e07de5bc5bb7aa /include/asm-generic/pgtable.h
parent3bf5ee95648c694bac4d13529563c230cd4fe5f2 (diff)
downloadop-kernel-dev-8f6c99c11ae63ce887686f3e51c412cc4d8d8a7d.zip
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[PATCH] freepgt: remove arch pgd_addr_end
ia64 and sparc64 hurriedly had to introduce their own variants of pgd_addr_end, to leapfrog over the holes in their virtual address spaces which the final clear_page_range suddenly presented when converted from pgd_index to pgd_addr_end. But now that free_pgtables respects the vma list, those holes are never presented, and the arch variants can go. Signed-off-by: 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-generic/pgtable.h')
-rw-r--r--include/asm-generic/pgtable.h8
1 files changed, 3 insertions, 5 deletions
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index a3b2871..1f4ec7b 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -140,17 +140,15 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addres
#endif
/*
- * When walking page tables, get the address of the next boundary, or
- * the end address of the range if that comes earlier. Although end might
- * wrap to 0 only in clear_page_range, __boundary may wrap to 0 throughout.
+ * When walking page tables, get the address of the next boundary,
+ * or the end address of the range if that comes earlier. Although no
+ * vma end wraps to 0, rounded up __boundary may wrap to 0 throughout.
*/
-#ifndef pgd_addr_end
#define pgd_addr_end(addr, end) \
({ unsigned long __boundary = ((addr) + PGDIR_SIZE) & PGDIR_MASK; \
(__boundary - 1 < (end) - 1)? __boundary: (end); \
})
-#endif
#ifndef pud_addr_end
#define pud_addr_end(addr, end) \
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