diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index e2ec4f067857..098f006fc5a3 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2592,6 +2592,8 @@ enum btrfs_reserve_flush_enum {
 	 *
 	 * Can be interruped by fatal signal.
 	 */
+	BTRFS_RESERVE_FLUSH_DATA,
+	BTRFS_RESERVE_FLUSH_FREE_SPACE_INODE,
 	BTRFS_RESERVE_FLUSH_ALL,
 
 	/*
diff --git a/fs/btrfs/space-info.c b/fs/btrfs/space-info.c
index 6a9bc5cc487b..980b6f641e78 100644
--- a/fs/btrfs/space-info.c
+++ b/fs/btrfs/space-info.c
@@ -1017,6 +1017,12 @@ static const enum btrfs_flush_state evict_flush_states[] = {
 	COMMIT_TRANS,
 };
 
+static const enum btrfs_flush_state data_flush_states[] = {
+	FLUSH_DELALLOC_WAIT,
+	COMMIT_TRANS,
+	RUN_DELAYED_IPUTS,
+};
+
 static void priority_reclaim_metadata_space(struct btrfs_fs_info *fs_info,
 				struct btrfs_space_info *space_info,
 				struct reserve_ticket *ticket,