--- a/fs/jffs2/summary.c
+++ b/fs/jffs2/summary.c
@@ -32,7 +32,7 @@ int jffs2_sum_init(struct jffs2_sb_info 
 		return -ENOMEM;
 	}
 
-	c->summary->sum_buf = kmalloc(sum_size, GFP_KERNEL);
+	c->summary->sum_buf = vmalloc(sum_size);
 
 	if (!c->summary->sum_buf) {
 		JFFS2_WARNING("Can't allocate buffer for writing out summary information!\n");
@@ -51,7 +51,7 @@ void jffs2_sum_exit(struct jffs2_sb_info
 
 	jffs2_sum_disable_collecting(c->summary);
 
-	kfree(c->summary->sum_buf);
+	vfree(c->summary->sum_buf);
 	c->summary->sum_buf = NULL;
 
 	kfree(c->summary);