From 190a1d722a59725706daf832bc8a511ed62f249d Mon Sep 17 00:00:00 2001
From: Martin Schwidefsky <schwidefsky@de.ibm.com>
Date: Mon, 22 Oct 2007 12:52:48 +0200
Subject: [S390] 4level-fixup cleanup
Get independent from asm-generic/4level-fixup.h
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
arch/s390/lib/uaccess_pt.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
(limited to 'arch/s390/lib')
diff --git a/arch/s390/lib/uaccess_pt.c b/arch/s390/lib/uaccess_pt.c
index dc37ea8..7e8efaa 100644
--- a/arch/s390/lib/uaccess_pt.c
+++ b/arch/s390/lib/uaccess_pt.c
@@ -18,13 +18,18 @@
static inline pte_t *follow_table(struct mm_struct *mm, unsigned long addr)
{
pgd_t *pgd;
+ pud_t *pud;
pmd_t *pmd;
pgd = pgd_offset(mm, addr);
if (pgd_none(*pgd) || unlikely(pgd_bad(*pgd)))
return NULL;
- pmd = pmd_offset(pgd, addr);
+ pud = pud_offset(pgd, addr);
+ if (pud_none(*pud) || unlikely(pud_bad(*pud)))
+ return NULL;
+
+ pmd = pmd_offset(pud, addr);
if (pmd_none(*pmd) || unlikely(pmd_bad(*pmd)))
return NULL;
--
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