diff --git a/[refs] b/[refs]
index fb2898da2b76..732fd18fc980 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 1363c3cd8603a913a27e2995dccbd70d5312d8e6
+refs/heads/master: 73219d178051691a56d57184d8c7f6d0cbe3c5c1
diff --git a/trunk/mm/mmap.c b/trunk/mm/mmap.c
index 9da23c1ef9dc..da3fa90a0aae 100644
--- a/trunk/mm/mmap.c
+++ b/trunk/mm/mmap.c
@@ -1267,6 +1267,9 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 			return (mm->free_area_cache = addr-len);
 	}
 
+	if (mm->mmap_base < len)
+		goto bottomup;
+
 	addr = mm->mmap_base-len;
 
 	do {
@@ -1288,6 +1291,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 		addr = vma->vm_start-len;
 	} while (len < vma->vm_start);
 
+bottomup:
 	/*
 	 * A failed mmap() very likely causes application failure,
 	 * so fall back to the bottom-up function here. This scenario