fixed the patch so its what is upstream.

btrfs-progs-fix-labels.patch

@@ -1,8 +1,16 @@
 diff --git a/mkfs.c b/mkfs.c
-index d664254..5ed44cc 100644
+index d664254..138bcc9 100644
 --- a/mkfs.c
 +++ b/mkfs.c
-@@ -302,12 +302,6 @@ static char *parse_label(char *input)
+@@ -294,7 +294,6 @@ static u64 parse_profile(char *s)
+ 
+ static char *parse_label(char *input)
+ {
+-	int i;
+ 	int len = strlen(input);
+ 
+ 	if (len > BTRFS_LABEL_SIZE) {
+@@ -302,12 +301,6 @@ static char *parse_label(char *input)
  			BTRFS_LABEL_SIZE);
  		exit(1);
  	}

btrfs-progs.spec

@@ -1,6 +1,6 @@
 Name:           btrfs-progs
 Version:        0.18
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        Userspace programs for btrfs
 
 Group:          System Environment/Base
@@ -47,6 +47,9 @@ rm -rf $RPM_BUILD_ROOT
 %{_root_sbindir}/btrfstune
 
 %changelog
+* Thu Jan 22 2009 Josef Bacik <josef@toxicpanda.com> 0.18-3
+- updated label patch
+
 * Thu Jan 22 2009 Josef Bacik <josef@toxicpanda.com> 0.18-2
 - add a patch to handle having /'s in labels