[PATCH] mm: fix account pmd page to the process

[zhongjiang]

From: zhong jiang <zhongji...@huawei.com>

hen a process acquire a pmd table shared by other process, we
increase the account to current process. otherwise, a race result
in other tasks have set the pud entry. so it no need to increase it.

Signed-off-by: zhong jiang <zhongji...@huawei.com>
---
 mm/hugetlb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 19d0d08..3072857 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -4191,7 +4191,7 @@ pte_t *huge_pmd_share(struct mm_struct *mm, unsigned long 
addr, pud_t *pud)
                                (pmd_t *)((unsigned long)spte & PAGE_MASK));
        } else {
                put_page(virt_to_page(spte));
-               mm_inc_nr_pmds(mm);
+               mm_dec_nr_pmds(mm);
        }
        spin_unlock(ptl);
 out:
-- 
1.8.3.1