Btrfs: make sure to record the transid in new inodes

When we create a new inode, we aren't filling in the
field that records the transaction that last changed this
inode.

If we then go to fsync that inode, it will be skipped because the field
isn't filled in.
Signed-off-by: Chris Mason <chris.mason@oracle.com>

fs/btrfs/inode.c

@@ -4520,6 +4520,7 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans,
 	inode_tree_add(inode);
 
 	trace_btrfs_inode_new(inode);
+	btrfs_set_inode_last_trans(trans, inode);
 
 	return inode;
 fail: