Btrfs: Add data block hints to SSD mode too

Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index b4a1bc6..3f64d0c 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -58,6 +58,7 @@
 		root->fs_info->generation++;
 		root->fs_info->running_transaction = cur_trans;
 		root->fs_info->last_alloc = 0;
+		root->fs_info->last_data_alloc = 0;
 		cur_trans->num_writers = 1;
 		cur_trans->num_joined = 0;
 		cur_trans->transid = root->fs_info->generation;