staging: android: lowmemorykiller: Ignore shmem pages in page-cache

Change-Id: Ia54fc50b7dcabfeb71eb487c652803f83e2f3d8e
Signed-off-by: Arve Hjønnevåg <arve@android.com>
diff --git a/drivers/staging/android/lowmemorykiller.c b/drivers/staging/android/lowmemorykiller.c
index 4c455cf..897bc3a 100644
--- a/drivers/staging/android/lowmemorykiller.c
+++ b/drivers/staging/android/lowmemorykiller.c
@@ -91,7 +91,8 @@
 	int selected_oom_adj;
 	int array_size = ARRAY_SIZE(lowmem_adj);
 	int other_free = global_page_state(NR_FREE_PAGES);
-	int other_file = global_page_state(NR_FILE_PAGES);
+	int other_file = global_page_state(NR_FILE_PAGES) -
+						global_page_state(NR_SHMEM);
 
 	/*
 	 * If we already have a death outstanding, then