[PATCH V4 2/3] powerpc/mm: Use generic version of pmdp_clear_flush

[Aneesh Kumar K.V]

Also move the pmd_trans_huge check to generic code.

Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.vnet.ibm.com>
---
 arch/powerpc/include/asm/pgtable-ppc64.h |  4 ----
 arch/powerpc/mm/pgtable_64.c             | 11 -----------
 mm/pgtable-generic.c                     |  1 +
 3 files changed, 1 insertion(+), 15 deletions(-)

diff --git a/arch/powerpc/include/asm/pgtable-ppc64.h 
b/arch/powerpc/include/asm/pgtable-ppc64.h
index b8d99227a0ac..3d7e898d6b5e 100644
--- a/arch/powerpc/include/asm/pgtable-ppc64.h
+++ b/arch/powerpc/include/asm/pgtable-ppc64.h
@@ -557,10 +557,6 @@ extern int pmdp_clear_flush_young(struct vm_area_struct 
*vma,
 extern pmd_t pmdp_get_and_clear(struct mm_struct *mm,
                                unsigned long addr, pmd_t *pmdp);
 
-#define __HAVE_ARCH_PMDP_CLEAR_FLUSH
-extern pmd_t pmdp_clear_flush(struct vm_area_struct *vma, unsigned long 
address,
-                             pmd_t *pmdp);
-
 #define __HAVE_ARCH_PMDP_SET_WRPROTECT
 static inline void pmdp_set_wrprotect(struct mm_struct *mm, unsigned long addr,
                                      pmd_t *pmdp)
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c
index 049d961802aa..f7775193d745 100644
--- a/arch/powerpc/mm/pgtable_64.c
+++ b/arch/powerpc/mm/pgtable_64.c
@@ -554,17 +554,6 @@ unsigned long pmd_hugepage_update(struct mm_struct *mm, 
unsigned long addr,
        return old;
 }
 
-pmd_t pmdp_clear_flush(struct vm_area_struct *vma, unsigned long address,
-                      pmd_t *pmdp)
-{
-       pmd_t pmd;
-
-       VM_BUG_ON(address & ~HPAGE_PMD_MASK);
-       VM_BUG_ON(!pmd_trans_huge(*pmdp));
-       pmd = pmdp_get_and_clear(vma->vm_mm, address, pmdp);
-       return pmd;
-}
-
 pmd_t pmdp_collapse_flush(struct vm_area_struct *vma, unsigned long address,
                          pmd_t *pmdp)
 {
diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c
index c25f94b33811..dd9d04f17749 100644
--- a/mm/pgtable-generic.c
+++ b/mm/pgtable-generic.c
@@ -126,6 +126,7 @@ pmd_t pmdp_clear_flush(struct vm_area_struct *vma, unsigned 
long address,
 {
        pmd_t pmd;
        VM_BUG_ON(address & ~HPAGE_PMD_MASK);
+       VM_BUG_ON(!pmd_trans_huge(*pmdp));
        pmd = pmdp_get_and_clear(vma->vm_mm, address, pmdp);
        flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
        return pmd;
-- 
2.1.4

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