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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2007-10-22 12:52:48 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2007-10-22 12:52:49 +0200
commit190a1d722a59725706daf832bc8a511ed62f249d (patch)
treefa4441d0f7833062687e7816e09ec73600ac8523 /arch/s390/lib
parent3610cce87af0693603db171d5b6f6735f5e3dc5b (diff)
downloadlinux-linaro-android-190a1d722a59725706daf832bc8a511ed62f249d.tar.gz
[S390] 4level-fixup cleanup
Get independent from asm-generic/4level-fixup.h Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/lib')
-rw-r--r--arch/s390/lib/uaccess_pt.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/s390/lib/uaccess_pt.c b/arch/s390/lib/uaccess_pt.c
index dc37ea827f4..7e8efaade2e 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;