1 files changed, 7 insertions, 0 deletions

diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h
index cffbb582dd90..dd9f1293ab35 100644
--- a/include/uapi/linux/btrfs.h
+++ b/include/uapi/linux/btrfs.h
@@ -407,6 +407,13 @@ struct btrfs_ioctl_received_subvol_args {
         __u64   reserved[16];           /* in */
 };
 
+/*
+ * Caller doesn't want file data in the send stream, even if the
+ * search of clone sources doesn't find an extent. UPDATE_EXTENT
+ * commands will be sent instead of WRITE commands.
+ */
+#define BTRFS_SEND_FLAG_NO_FILE_DATA     0x1
+
 struct btrfs_ioctl_send_args {
         __s64 send_fd;                  /* in */
         __u64 clone_sources_count;      /* in */