v4.19.13 snapshot.
diff --git a/fs/btrfs/xattr.h b/fs/btrfs/xattr.h
new file mode 100644
index 0000000..471fcac
--- /dev/null
+++ b/fs/btrfs/xattr.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2007 Red Hat. All rights reserved.
+ */
+
+#ifndef BTRFS_XATTR_H
+#define BTRFS_XATTR_H
+
+#include <linux/xattr.h>
+
+extern const struct xattr_handler *btrfs_xattr_handlers[];
+
+int btrfs_getxattr(struct inode *inode, const char *name,
+ void *buffer, size_t size);
+int btrfs_setxattr(struct btrfs_trans_handle *trans,
+ struct inode *inode, const char *name,
+ const void *value, size_t size, int flags);
+ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
+
+int btrfs_xattr_security_init(struct btrfs_trans_handle *trans,
+ struct inode *inode, struct inode *dir,
+ const struct qstr *qstr);
+
+#endif