From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
We check if the pmd entry is the same as on pmd_trans_huge() in
handle_mm_fault(). That's enough.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
---
mm/huge_memory.c | 6 ------
1 file changed, 6 deletions(-)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 3c14a96..9bb2c23 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -758,12 +758,6 @@ void do_huge_pmd_numa_page(struct mm_struct *mm, struct vm_area_struct *vma,
if (unlikely(!pmd_same(*pmd, entry)))
goto unlock;
- if (unlikely(pmd_trans_splitting(entry))) {
- spin_unlock(&mm->page_table_lock);
- wait_split_huge_page(vma->anon_vma, pmd);
- return;
- }
-
page = pmd_page(entry);
if (page) {
VM_BUG_ON(!PageCompound(page) || !PageHead(page));
--
1.7.10.4
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