PM / Hibernate: Fix free_unnecessary_pages()

[deliverable/linux.git] / kernel / power / snapshot.c

diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index ace55889f7027b051acbaabdbce71389315418e5..06efa54f93d6686bfc2f218d92149ee56cf9e511 100644 (file)
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -1211,7 +1211,11 @@ static void free_unnecessary_pages(void)
                to_free_highmem = alloc_highmem - save;
        } else {
                to_free_highmem = 0;
-               to_free_normal -= save - alloc_highmem;
+               save -= alloc_highmem;
+               if (to_free_normal > save)
+                       to_free_normal -= save;
+               else
+                       to_free_normal = 0;
        }
 
        memory_bm_position_reset(&copy_bm);