mm: avoid false sharing of mm_counter

[safe/jmp/linux-2.6] / kernel / exit.c

diff --git a/kernel/exit.c b/kernel/exit.c
index 45ed043..10d3c5d 100644 (file)
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -952,7 +952,8 @@ NORET_TYPE void do_exit(long code)
                                preempt_count());
 
        acct_update_integrals(tsk);
-
+       /* sync mm's RSS info before statistics gathering */
+       sync_mm_rss(tsk, tsk->mm);
        group_dead = atomic_dec_and_test(&tsk->signal->live);
        if (group_dead) {
                hrtimer_cancel(&tsk->signal->real_timer);