smb2_set_sparse
smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
smb2_set_sparse(xid, tcon, cfile, inode, false);
smb2_set_sparse(xid, tcon, cfile, inode, false);