[PATCH 2/3] staging: lowmemorykiller: count anon pages only when we have swap devices

[Ganesh Mahendran]

lowmem_count() should only count anon pages when we have swap device.

Signed-off-by: Ganesh Mahendran <opensource.gan...@gmail.com>
---
 drivers/staging/android/lowmemorykiller.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/android/lowmemorykiller.c 
b/drivers/staging/android/lowmemorykiller.c
index 6da9260..1d8de47 100644
--- a/drivers/staging/android/lowmemorykiller.c
+++ b/drivers/staging/android/lowmemorykiller.c
@@ -73,10 +73,14 @@ static unsigned long lowmem_deathpending_timeout;
 static unsigned long lowmem_count(struct shrinker *s,
                                  struct shrink_control *sc)
 {
-       return global_page_state(NR_ACTIVE_ANON) +
-               global_page_state(NR_ACTIVE_FILE) +
-               global_page_state(NR_INACTIVE_ANON) +
-               global_page_state(NR_INACTIVE_FILE);
+       unsigned long freeable = global_page_state(NR_ACTIVE_FILE) +
+                               global_page_state(NR_INACTIVE_FILE);
+
+       if (get_nr_swap_pages() > 0)
+               freeable += global_page_state(NR_ACTIVE_ANON) +
+                               global_page_state(NR_INACTIVE_ANON);
+
+       return freeable;
 }
 
 static unsigned long lowmem_scan(struct shrinker *s, struct shrink_control *sc)
-- 
1.9.1