IORING_POLL_ADD_MULTI
if (!(flags & IORING_POLL_ADD_MULTI))
IORING_POLL_ADD_MULTI))
if (flags == IORING_POLL_ADD_MULTI)
if (flags & ~IORING_POLL_ADD_MULTI)
if ((flags & IORING_POLL_ADD_MULTI) && (req->flags & REQ_F_CQE_SKIP))