hammer2_freemap_try_alloc
error = hammer2_freemap_try_alloc(&parent, bref, radix,
static int hammer2_freemap_try_alloc(hammer2_chain_t **parentp,
error = hammer2_freemap_try_alloc(&parent, bref, radix,
static int hammer2_freemap_try_alloc(hammer2_chain_t **parentp,