X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=mm%2Fpgtable-generic.c;h=3929a40bd6c0a6d618d0dc0136fe6aecaad08628;hb=25724841dfaed05f23a3ddaaaed5c9b61ceea7bd;hp=e1a6e4fab016200e94ec2c9e96b1c7f88281ed22;hpb=6bd2cab2c1fd0616b28bb567543f53b624bf885a;p=~andy%2Flinux

diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c
index e1a6e4fab01..3929a40bd6c 100644
--- a/mm/pgtable-generic.c
+++ b/mm/pgtable-generic.c
@@ -10,6 +10,30 @@
 #include <asm/tlb.h>
 #include <asm-generic/pgtable.h>
 
+/*
+ * If a p?d_bad entry is found while walking page tables, report
+ * the error, before resetting entry to p?d_none.  Usually (but
+ * very seldom) called out from the p?d_none_or_clear_bad macros.
+ */
+
+void pgd_clear_bad(pgd_t *pgd)
+{
+	pgd_ERROR(*pgd);
+	pgd_clear(pgd);
+}
+
+void pud_clear_bad(pud_t *pud)
+{
+	pud_ERROR(*pud);
+	pud_clear(pud);
+}
+
+void pmd_clear_bad(pmd_t *pmd)
+{
+	pmd_ERROR(*pmd);
+	pmd_clear(pmd);
+}
+
 #ifndef __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
 /*
  * Only sets the access flags (dirty, accessed), as well as write