As dentry_path is not exported by the kernel, replace with dentry_path_raw.

--- a/libcfs/libcfs/crypto/keyring.c
+++ b/libcfs/libcfs/crypto/keyring.c
@@ -707,7 +707,7 @@ static int check_for_busy_inodes(struct
 	spin_unlock(&mk->mk_decrypted_inodes_lock);
 
 	if (dentry) {
-		path = dentry_path(dentry, _path, sizeof(_path));
+		path = dentry_path_raw(dentry, _path, sizeof(_path));
 		dput(dentry);
 	}
 	if (IS_ERR_OR_NULL(path))