btrfs: use ERRNO_IS_NOT_SUPPORTED() where appropriate

diff --git a/src/basic/btrfs.c b/src/basic/btrfs.c
index 78957a1d2b82f419e347d739e18a2c2a8baa0464..bb07374def9d790a3b7cd2b74fbc1e2e3924d150 100644 (file)
--- a/src/basic/btrfs.c
+++ b/src/basic/btrfs.c
@@ -88,7 +88,7 @@ int btrfs_subvol_make_fallback(int dir_fd, const char *path, mode_t mode) {
 
         if (r >= 0)
                 return 1; /* subvol worked */
-        if (r != -ENOTTY)
+        if (!ERRNO_IS_NOT_SUPPORTED(r))
                 return r;
 
         if (mkdirat(dir_fd, path, mode) < 0)