btrfs: defrag: reject unknown flags of btrfs_ioctl_defrag_range_args

[platform/kernel/linux-starfive.git] / include / uapi / linux / btrfs.h

diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h
index dbb8b96..6f776fa 100644 (file)
--- a/include/uapi/linux/btrfs.h
+++ b/include/uapi/linux/btrfs.h
@@ -612,6 +612,9 @@ struct btrfs_ioctl_clone_range_args {
  */
 #define BTRFS_DEFRAG_RANGE_COMPRESS 1
 #define BTRFS_DEFRAG_RANGE_START_IO 2
+#define BTRFS_DEFRAG_RANGE_FLAGS_SUPP  (BTRFS_DEFRAG_RANGE_COMPRESS |          \
+                                        BTRFS_DEFRAG_RANGE_START_IO)
+
 struct btrfs_ioctl_defrag_range_args {
        /* start of the defrag operation */
        __u64 start;