io_uring: convert epoll to io_cmd_type

Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index 38c34da..bcdc6ed 100644 (file)
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -980,7 +980,6 @@ struct io_kiocb {
                struct file             *file;
                struct io_cmd_data      cmd;
                struct io_rsrc_update   rsrc_update;
-               struct io_epoll         epoll;
                struct io_splice        splice;
                struct io_provide_buf   pbuf;
                struct io_msg           msg;
@@ -5577,18 +5576,20 @@ static int io_epoll_ctl_prep(struct io_kiocb *req,
                             const struct io_uring_sqe *sqe)
 {
 #if defined(CONFIG_EPOLL)
+       struct io_epoll *epoll = io_kiocb_to_cmd(req);
+
        if (sqe->buf_index || sqe->splice_fd_in)
                return -EINVAL;
 
-       req->epoll.epfd = READ_ONCE(sqe->fd);
-       req->epoll.op = READ_ONCE(sqe->len);
-       req->epoll.fd = READ_ONCE(sqe->off);
+       epoll->epfd = READ_ONCE(sqe->fd);
+       epoll->op = READ_ONCE(sqe->len);
+       epoll->fd = READ_ONCE(sqe->off);
 
-       if (ep_op_has_event(req->epoll.op)) {
+       if (ep_op_has_event(epoll->op)) {
                struct epoll_event __user *ev;
 
                ev = u64_to_user_ptr(READ_ONCE(sqe->addr));
-               if (copy_from_user(&req->epoll.event, ev, sizeof(*ev)))
+               if (copy_from_user(&epoll->event, ev, sizeof(*ev)))
                        return -EFAULT;
        }
 
@@ -5601,7 +5602,7 @@ static int io_epoll_ctl_prep(struct io_kiocb *req,
 static int io_epoll_ctl(struct io_kiocb *req, unsigned int issue_flags)
 {
 #if defined(CONFIG_EPOLL)
-       struct io_epoll *ie = &req->epoll;
+       struct io_epoll *ie = io_kiocb_to_cmd(req);
        int ret;
        bool force_nonblock = issue_flags & IO_URING_F_NONBLOCK;