mm: convert mm->nr_ptes to atomic_long_t

[mirror_ubuntu-artful-kernel.git] / mm / memory.c

diff --git a/mm/memory.c b/mm/memory.c
index bf8665849a5fed0b93f6022670c7c571e7eea8c6..0b5a93a49f271b1d2daa18ccf6fbe4cdda23ab75 100644 (file)
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -382,7 +382,7 @@ static void free_pte_range(struct mmu_gather *tlb, pmd_t *pmd,
        pgtable_t token = pmd_pgtable(*pmd);
        pmd_clear(pmd);
        pte_free_tlb(tlb, token, addr);
-       tlb->mm->nr_ptes--;
+       atomic_long_dec(&tlb->mm->nr_ptes);
 }
 
 static inline void free_pmd_range(struct mmu_gather *tlb, pud_t *pud,
@@ -573,7 +573,7 @@ int __pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma,
        spin_lock(&mm->page_table_lock);
        wait_split_huge_page = 0;
        if (likely(pmd_none(*pmd))) {   /* Has another populated it ? */
-               mm->nr_ptes++;
+               atomic_long_inc(&mm->nr_ptes);
                pmd_populate(mm, pmd, new);
                new = NULL;
        } else if (unlikely(pmd_trans_splitting(*pmd)))