io_free_req_many() is used only for iopoll requests, i.e. reads/writes.
Hence no need to batch inflight unhooking. For safety, it'll be done by
io_dismantle_req(), which replaces __io_req_aux_free(), and looks more
solid and cleaner.
Signed-off-by: NPavel Begunkov <asml.silence@gmail.com>
Signed-off-by: NJens Axboe <axboe@kernel.dk>