1 files changed, 1 insertions, 3 deletions

diff --git a/mm/swapfile.c b/mm/swapfile.c
index fbceed67a075..f2824c3c31b4 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -772,10 +772,8 @@ static int try_to_unuse(unsigned int type)
                         while (*swap_map > 1 && !retval &&
                                         (p = p->next) != &start_mm->mmlist) {
                                 mm = list_entry(p, struct mm_struct, mmlist);
-                                if (atomic_inc_return(&mm->mm_users) == 1) {
-                                        atomic_dec(&mm->mm_users);
+                                if (!atomic_inc_not_zero(&mm->mm_users))
                                         continue;
-                                }
                                 spin_unlock(&mmlist_lock);
                                 mmput(prev_mm);
                                 prev_mm = mm;