From: "Aneesh Kumar K.V" <aneesh.ku...@linux.vnet.ibm.com>
For architectures like ppc64 we look at deposited pgtable when
calling pmdp_get_and_clear. So do the pgtable_trans_huge_withdraw
after finishing pmdp related operations.
Cc: Andrea Arcangeli <aarca...@redhat.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.vnet.ibm.com>
---
mm/huge_memory.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index e91b763..5c7cd7d 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1380,9 +1380,10 @@ int zap_huge_pmd(struct mmu_gather *tlb, struct
vm_area_struct *vma,
struct page *page;
pgtable_t pgtable;
pmd_t orig_pmd;
- pgtable = pgtable_trans_huge_withdraw(tlb->mm, pmd);
+
orig_pmd = pmdp_get_and_clear(tlb->mm, addr, pmd);
tlb_remove_pmd_tlb_entry(tlb, pmd, addr);
+ pgtable = pgtable_trans_huge_withdraw(tlb->mm, pmd);
if (is_huge_zero_pmd(orig_pmd)) {
tlb->mm->nr_ptes--;
spin_unlock(&tlb->mm->page_table_lock);
--
1.7.10
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