From: zhong jiang <zhongjiang@xxxxxxxxxx>
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 <zhongjiang@xxxxxxxxxx>
---
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
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