io_uring: remove unneeded io_send_zc accounting

zc->len and zc->buf are not actually used once you get to the retry
stage. The buffer remains in kmsg->msg.msg_iter, which is setup in
io_send_setup.
Note: it still seems needed in io_send due to io_send_select_buffer
needing it (for the len parameter).

Signed-off-by: Dylan Yudaken <dyudaken@gmail.com>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/io_uring/net.c b/io_uring/net.c
index a6f3cbb..8576c6c 100644 (file)
--- a/io_uring/net.c
+++ b/io_uring/net.c
@@ -1493,8 +1493,6 @@ int io_send_zc(struct io_kiocb *req, unsigned int issue_flags)
                        return -EAGAIN;
 
                if (ret > 0 && io_net_retry(sock, kmsg->msg.msg_flags)) {
-                       zc->len -= ret;
-                       zc->buf += ret;
                        zc->done_io += ret;
                        return -EAGAIN;
                }