This reverts the mmap address hint usage for now.

It broke some existing setups, so let's drop it until we have
a better notion of how to do this.

arch/x86_64/kernel/sys_x86_64.c

@@ -110,8 +110,8 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 		if (end - len >= addr &&
 		    (!vma || addr + len <= vma->vm_start))
 			return addr;
-	} else
-		addr = mm->free_area_cache;
+	}
+	addr = mm->free_area_cache;
 	if (addr < begin) 
 		addr = begin; 
 	start_addr = addr;

mm/mmap.c

@@ -743,9 +743,8 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 		if (TASK_SIZE - len >= addr &&
 		    (!vma || addr + len <= vma->vm_start))
 			return addr;
-	} else
-		addr = mm->free_area_cache;
-	start_addr = addr;
+	}
+	start_addr = addr = mm->free_area_cache;
 
 full_search:
 	for (vma = find_vma(mm, addr); ; vma = vma->vm_next) {