liburing: add io_uring_iocb_from_ev() helper

Returns the iocb associated with a completion event. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-01-08 15:16:55 -07:00
parent 6a44c6e0f7
commit f47f24cea7
1 changed files with 6 additions and 0 deletions
--- a/src/liburing.h
+++ b/src/liburing.h
@@ -56,4 +56,10 @@ extern int io_uring_wait_completion(int fd, struct io_uring_cq *cq,
 extern int io_uring_submit(int fd, struct io_uring_sq *sq);
 extern struct io_uring_iocb *io_uring_get_iocb(struct io_uring_sq *sq);

+static inline struct io_uring_iocb *
+io_uring_iocb_from_ev(struct io_uring_sq *sq, struct io_uring_event *ev)
+{
+	return &sq->iocbs[ev->index];
+}
+
 #endif