io_uring: highlight read-retry loop
We already have implicit do-while for read-retries but with goto in the
end. Convert it to an actual do-while, it highlights it so making a
bit more understandable and is cleaner in general.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 35ad889..bbf8ea83 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -3566,27 +3566,27 @@ static int io_read(struct io_kiocb *req, bool force_nonblock,
rw = req->async_data;
/* now use our persistent iterator, if we aren't already */
iter = &rw->iter;
-retry:
- io_size -= ret;
- rw->bytes_done += ret;
- /* if we can retry, do so with the callbacks armed */
- if (!io_rw_should_retry(req)) {
- kiocb->ki_flags &= ~IOCB_WAITQ;
- return -EAGAIN;
- }
- /*
- * Now retry read with the IOCB_WAITQ parts set in the iocb. If we
- * get -EIOCBQUEUED, then we'll get a notification when the desired
- * page gets unlocked. We can also get a partial read here, and if we
- * do, then just retry at the new offset.
- */
- ret = io_iter_do_read(req, iter);
- if (ret == -EIOCBQUEUED)
- return 0;
- /* we got some bytes, but not all. retry. */
- if (ret > 0 && ret < io_size)
- goto retry;
+ do {
+ io_size -= ret;
+ rw->bytes_done += ret;
+ /* if we can retry, do so with the callbacks armed */
+ if (!io_rw_should_retry(req)) {
+ kiocb->ki_flags &= ~IOCB_WAITQ;
+ return -EAGAIN;
+ }
+
+ /*
+ * Now retry read with the IOCB_WAITQ parts set in the iocb. If
+ * we get -EIOCBQUEUED, then we'll get a notification when the
+ * desired page gets unlocked. We can also get a partial read
+ * here, and if we do, then just retry at the new offset.
+ */
+ ret = io_iter_do_read(req, iter);
+ if (ret == -EIOCBQUEUED)
+ return 0;
+ /* we got some bytes, but not all. retry. */
+ } while (ret > 0 && ret < io_size);
done:
kiocb_done(kiocb, ret, cs);
return 0;
