[PATCH 1/3] io_uring/rw: split io_read() into a helper

[Jens Axboe <axboe@kernel.dk>]

Add __io_read() which does the grunt of the work, leaving the completion
side to the new io_read(). No functional changes in this patch.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 io_uring/rw.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/io_uring/rw.c b/io_uring/rw.c
index c8c822fa7980..402e8bf002d6 100644
--- a/io_uring/rw.c
+++ b/io_uring/rw.c
@@ -708,7 +708,7 @@ static int io_rw_init_file(struct io_kiocb *req, fmode_t mode)
 	return 0;
 }
 
-int io_read(struct io_kiocb *req, unsigned int issue_flags)
+static int __io_read(struct io_kiocb *req, unsigned int issue_flags)
 {
 	struct io_rw *rw = io_kiocb_to_cmd(req, struct io_rw);
 	struct io_rw_state __s, *s = &__s;
@@ -853,6 +853,17 @@ int io_read(struct io_kiocb *req, unsigned int issue_flags)
 	/* it's faster to check here then delegate to kfree */
 	if (iovec)
 		kfree(iovec);
+	return ret;
+}
+
+int io_read(struct io_kiocb *req, unsigned int issue_flags)
+{
+	int ret;
+
+	ret = __io_read(req, issue_flags);
+	if (unlikely(ret < 0))
+		return ret;
+
 	return kiocb_done(req, ret, issue_flags);
 }
 
-- 
2.40.1