ttm_eu_reserve_buffers
r = ttm_eu_reserve_buffers(&p->ticket, &p->validated, true,
r = ttm_eu_reserve_buffers(&ticket, &list, false, &duplicates);
r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates);
r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL);
extern int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket,
r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL);
r = ttm_eu_reserve_buffers(ticket, head, true, &duplicates);
EXPORT_SYMBOL(ttm_eu_reserve_buffers);