io_uring: fix code style problems

Fix a bunch of problems mostly found by checkpatch.pl
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/cfaf9a2f27b43934144fe9422a916bd327099f44.1624543113.git.asml.silence@gmail.comSigned-off-by: Jens Axboe <axboe@kernel.dk>

fs/io_uring.c

@@ -173,7 +173,7 @@ struct io_rings {
 	 * Written by the application, shouldn't be modified by the
 	 * kernel.
 	 */
-	u32                     cq_flags;
+	u32			cq_flags;
 	/*
 	 * Number of completion events lost because the queue was full;
 	 * this should be avoided by the application by making sure
@@ -857,7 +857,7 @@ struct io_kiocb {
 	struct hlist_node		hash_node;
 	struct async_poll		*apoll;
 	struct io_wq_work		work;
-	const struct cred 		*creds;
+	const struct cred		*creds;
 
 	/* store used ubuf, so we can prevent reloading */
 	struct io_mapped_ubuf		*imu;
@@ -1707,7 +1707,7 @@ static struct io_kiocb *io_alloc_req(struct io_ring_ctx *ctx)
 {
 	struct io_submit_state *state = &ctx->submit_state;
 
-	BUILD_BUG_ON(IO_REQ_ALLOC_BATCH > ARRAY_SIZE(state->reqs));
+	BUILD_BUG_ON(ARRAY_SIZE(state->reqs) < IO_REQ_ALLOC_BATCH);
 
 	if (!state->free_reqs) {
 		gfp_t gfp = GFP_KERNEL | __GFP_NOWARN;
@@ -2769,7 +2769,7 @@ static void kiocb_done(struct kiocb *kiocb, ssize_t ret,
 	else
 		io_rw_done(kiocb, ret);
 
-	if (check_reissue && req->flags & REQ_F_REISSUE) {
+	if (check_reissue && (req->flags & REQ_F_REISSUE)) {
 		req->flags &= ~REQ_F_REISSUE;
 		if (io_resubmit_prep(req)) {
 			req_ref_get(req);
@@ -3591,7 +3591,7 @@ static int io_shutdown(struct io_kiocb *req, unsigned int issue_flags)
 static int __io_splice_prep(struct io_kiocb *req,
 			    const struct io_uring_sqe *sqe)
 {
-	struct io_splice* sp = &req->splice;
+	struct io_splice *sp = &req->splice;
 	unsigned int valid_flags = SPLICE_F_FD_IN_FIXED | SPLICE_F_ALL;
 
 	if (unlikely(req->ctx->flags & IORING_SETUP_IOPOLL))
@@ -3645,7 +3645,7 @@ static int io_tee(struct io_kiocb *req, unsigned int issue_flags)
 
 static int io_splice_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 {
-	struct io_splice* sp = &req->splice;
+	struct io_splice *sp = &req->splice;
 
 	sp->off_in = READ_ONCE(sqe->splice_off_in);
 	sp->off_out = READ_ONCE(sqe->off);
@@ -8567,6 +8567,7 @@ static int io_eventfd_register(struct io_ring_ctx *ctx, void __user *arg)
 	ctx->cq_ev_fd = eventfd_ctx_fdget(fd);
 	if (IS_ERR(ctx->cq_ev_fd)) {
 		int ret = PTR_ERR(ctx->cq_ev_fd);
+
 		ctx->cq_ev_fd = NULL;
 		return ret;
 	}
@@ -9347,9 +9348,8 @@ SYSCALL_DEFINE6(io_uring_enter, unsigned int, fd, u32, to_submit,
 		io_cqring_overflow_flush(ctx, false);
 
 		ret = -EOWNERDEAD;
-		if (unlikely(ctx->sq_data->thread == NULL)) {
+		if (unlikely(ctx->sq_data->thread == NULL))
 			goto out;
-		}
 		if (flags & IORING_ENTER_SQ_WAKEUP)
 			wake_up(&ctx->sq_data->wait);
 		if (flags & IORING_ENTER_SQ_WAIT) {