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Subject[PATCHv3 07/11] s390/mm: Modify pmdp_invalidate to return old value.
Date
From: Martin Schwidefsky <schwidefsky@de.ibm.com>

It's required to avoid loosing dirty and accessed bits.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
---
arch/s390/include/asm/pgtable.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index dce708e061ea..d3de8ddc55ec 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -1504,10 +1504,11 @@ static inline pmd_t pmdp_huge_clear_flush(struct vm_area_struct *vma,
}

#define __HAVE_ARCH_PMDP_INVALIDATE
-static inline void pmdp_invalidate(struct vm_area_struct *vma,
+static inline pmd_t pmdp_invalidate(struct vm_area_struct *vma,
unsigned long addr, pmd_t *pmdp)
{
- pmdp_xchg_direct(vma->vm_mm, addr, pmdp, __pmd(_SEGMENT_ENTRY_EMPTY));
+ return pmdp_xchg_direct(vma->vm_mm, addr, pmdp,
+ __pmd(_SEGMENT_ENTRY_EMPTY));
}

#define __HAVE_ARCH_PMDP_SET_WRPROTECT
--
2.14.1
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