staging: android: lowmemorykiller: set TIF_MEMDIE before send kill sig

Set TIF_MEMDIE tsk_thread flag before send kill signal to the
selected thread. This is to fit a usual code sequence and avoid
potential race issue.

Signed-off-by: Weijie Yang <weijie.yang@samsung.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/android/lowmemorykiller.c b/drivers/staging/android/lowmemorykiller.c
index 6f094b3..4bcf00a 100644 (file)
--- a/drivers/staging/android/lowmemorykiller.c
+++ b/drivers/staging/android/lowmemorykiller.c
@@ -159,8 +159,8 @@ static unsigned long lowmem_scan(struct shrinker *s, struct shrink_control *sc)
                             selected->pid, selected->comm,
                             selected_oom_score_adj, selected_tasksize);
                lowmem_deathpending_timeout = jiffies + HZ;
-               send_sig(SIGKILL, selected, 0);
                set_tsk_thread_flag(selected, TIF_MEMDIE);
+               send_sig(SIGKILL, selected, 0);
                rem += selected_tasksize;
        }