io_uring: remove extra argument for overflow flush

Unlike __io_cqring_overflow_flush(), nobody does forced flushing with
io_cqring_overflow_flush(), so removed the argument from it.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/7594f869ca41b7cfb5a35a3c7c2d402242834e9e.1628536684.git.asml.silence@gmail.comSigned-off-by: Jens Axboe <axboe@kernel.dk>

fs/io_uring.c

@@ -1523,7 +1523,7 @@ static bool __io_cqring_overflow_flush(struct io_ring_ctx *ctx, bool force)
 	return all_flushed;
 }
 
-static bool io_cqring_overflow_flush(struct io_ring_ctx *ctx, bool force)
+static bool io_cqring_overflow_flush(struct io_ring_ctx *ctx)
 {
 	bool ret = true;
 
@@ -1531,7 +1531,7 @@ static bool io_cqring_overflow_flush(struct io_ring_ctx *ctx, bool force)
 		/* iopoll syncs against uring_lock, not completion_lock */
 		if (ctx->flags & IORING_SETUP_IOPOLL)
 			mutex_lock(&ctx->uring_lock);
-		ret = __io_cqring_overflow_flush(ctx, force);
+		ret = __io_cqring_overflow_flush(ctx, false);
 		if (ctx->flags & IORING_SETUP_IOPOLL)
 			mutex_unlock(&ctx->uring_lock);
 	}
@@ -7058,7 +7058,7 @@ static int io_cqring_wait(struct io_ring_ctx *ctx, int min_events,
 	int ret;
 
 	do {
-		io_cqring_overflow_flush(ctx, false);
+		io_cqring_overflow_flush(ctx);
 		if (io_cqring_events(ctx) >= min_events)
 			return 0;
 		if (!io_run_task_work())
@@ -7096,7 +7096,7 @@ static int io_cqring_wait(struct io_ring_ctx *ctx, int min_events,
 	trace_io_uring_cqring_wait(ctx, min_events);
 	do {
 		/* if we can't even flush overflow, don't wait for more */
-		if (!io_cqring_overflow_flush(ctx, false)) {
+		if (!io_cqring_overflow_flush(ctx)) {
 			ret = -EBUSY;
 			break;
 		}
@@ -9365,7 +9365,7 @@ SYSCALL_DEFINE6(io_uring_enter, unsigned int, fd, u32, to_submit,
 	 */
 	ret = 0;
 	if (ctx->flags & IORING_SETUP_SQPOLL) {
-		io_cqring_overflow_flush(ctx, false);
+		io_cqring_overflow_flush(ctx);
 
 		if (unlikely(ctx->sq_data->thread == NULL)) {
 			ret = -EOWNERDEAD;