[RFC 06/16] io_uring: split out config init helper

[Pavel Begunkov <asml.silence@gmail.com>]

Separate most of configuration verification / calculation into a
function, that will be the first step before doing any actual
allocation.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 io_uring/io_uring.c | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index 142811c7a4f5..30ba60974f1d 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -3552,12 +3552,9 @@ int io_uring_fill_params(struct io_uring_params *p)
 	return 0;
 }
 
-static __cold int io_uring_create(struct io_ctx_config *config)
+static int io_prepare_config(struct io_ctx_config *config)
 {
 	struct io_uring_params *p = &config->p;
-	struct io_ring_ctx *ctx;
-	struct io_uring_task *tctx;
-	struct file *file;
 	int ret;
 
 	ret = io_uring_sanitise_params(p);
@@ -3565,7 +3562,22 @@ static __cold int io_uring_create(struct io_ctx_config *config)
 		return ret;
 
 	ret = io_uring_fill_params(p);
-	if (unlikely(ret))
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static __cold int io_uring_create(struct io_ctx_config *config)
+{
+	struct io_uring_params *p = &config->p;
+	struct io_ring_ctx *ctx;
+	struct io_uring_task *tctx;
+	struct file *file;
+	int ret;
+
+	ret = io_prepare_config(config);
+	if (ret)
 		return ret;
 
 	ctx = io_ring_ctx_alloc(p);
-- 
2.49.0