The true option causes this indenting for functions:

static struct something_very_very_long *
    function(void *arg)
{

While a quick survey suggests that the usual Linux fallback is the GNU
style:

static struct something_very_very_long *
function(void *arg)
{

Eg as seen in:

kernel/cpu.c
kernel/fork.c
etc
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>