io-wq: remove unused IO_WQ_WORK_HAS_MM

to #28170604

commit e85530ddda4f08d4f9ed6506d4a1f42e086e3b21 upstream

IO_WQ_WORK_HAS_MM is set but never used, remove it.
Signed-off-by: NPavel Begunkov <asml.silence@gmail.com>
Signed-off-by: NJens Axboe <axboe@kernel.dk>
Acked-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
Signed-off-by: NXiaoguang Wang <xiaoguang.wang@linux.alibaba.com>

fs/io-wq.c

@@ -500,8 +500,6 @@ static void io_worker_handle_work(struct io_worker *worker)
 		 */
 		if (test_bit(IO_WQ_BIT_CANCEL, &wq->state))
 			work->flags |= IO_WQ_WORK_CANCEL;
-		if (worker->mm)
-			work->flags |= IO_WQ_WORK_HAS_MM;
 
 		if (wq->get_work) {
 			put_work = work;

fs/io-wq.h

@@ -5,7 +5,6 @@ struct io_wq;
 
 enum {
 	IO_WQ_WORK_CANCEL	= 1,
-	IO_WQ_WORK_HAS_MM	= 2,
 	IO_WQ_WORK_HASHED	= 4,
 	IO_WQ_WORK_UNBOUND	= 32,
 	IO_WQ_WORK_CB		= 128,