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authorHugh Dickins <hugh@veritas.com>2005-10-29 18:15:59 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-10-29 21:40:37 -0700
commit65500d234e74fc4e8f18e1a429bc24e51e75de4a (patch)
tree2bae8c3622b6537dbd142ba2744c7cc9430d3b69 /include
parent7c1fd6b964860cdcf44b6b98d7dcd8cc16a0a26d (diff)
[PATCH] mm: page fault handlers tidyup
Impose a little more consistency on the page fault handlers do_wp_page, do_swap_page, do_anonymous_page, do_no_page, do_file_page: why not pass their arguments in the same order, called the same names? break_cow is all very well, but what it did was inlined elsewhere: easier to compare if it's brought back into do_wp_page. do_file_page's fallback to do_no_page dates from a time when we were testing pte_file by using it wherever possible: currently it's peculiar to nonlinear vmas, so just check that. BUG_ON if not? Better not, it's probably page table corruption, so just show the pte: hmm, there's a pte_ERROR macro, let's use that for do_wp_page's invalid pfn too. Hah! Someone in the ppc64 world noticed pte_ERROR was unused so removed it: restored (and say "pud" not "pmd" in its pud_ERROR). 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')
-rw-r--r--include/asm-ppc64/pgtable.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/asm-ppc64/pgtable.h b/include/asm-ppc64/pgtable.h
index c83679c9d2b..2eb1778a3a1 100644
--- a/include/asm-ppc64/pgtable.h
+++ b/include/asm-ppc64/pgtable.h
@@ -478,10 +478,12 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long addr,
#define __HAVE_ARCH_PTE_SAME
#define pte_same(A,B) (((pte_val(A) ^ pte_val(B)) & ~_PAGE_HPTEFLAGS) == 0)
+#define pte_ERROR(e) \
+ printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
#define pmd_ERROR(e) \
printk("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, pmd_val(e))
#define pud_ERROR(e) \
- printk("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, pud_val(e))
+ printk("%s:%d: bad pud %08lx.\n", __FILE__, __LINE__, pud_val(e))
#define pgd_ERROR(e) \
printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))