btrfs-progs: move ulist.[ch] to kernel-shared

The implementation of ulist_* is same for kernel and userspace, without
dependencies, so we can keep it separately for code sync.

Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/backref.c b/backref.c
index a43e80da..e1f41e1a 100644
--- a/backref.c
+++ b/backref.c
@@ -20,7 +20,7 @@
 #include "ctree.h"
 #include "disk-io.h"
 #include "backref.h"
-#include "ulist.h"
+#include "kernel-shared/ulist.h"
 #include "transaction.h"
 #include "internal.h"