ocfs2: Retry sendpage() if it returns EAGAIN (ce17204a) · Commits · 戴 / test

Instead of treating EAGAIN, returned from sendpage(), as an error, this patch retries the operation. Signed-off-by:

fs/ocfs2/cluster/tcp.c

+16 −8

Original line number	Diff line number	Diff line
		@@ -854,17 +854,25 @@ static void o2net_sendpage(struct o2net_sock_container *sc,
		struct o2net_node *nn = o2net_nn_from_num(sc->sc_node->nd_num);
		ssize_t ret;


		while (1) {
		mutex_lock(&sc->sc_send_lock);
		ret = sc->sc_sock->ops->sendpage(sc->sc_sock,
		virt_to_page(kmalloced_virt),
		(long)kmalloced_virt & ~PAGE_MASK,
		size, MSG_DONTWAIT);
		mutex_unlock(&sc->sc_send_lock);
		if (ret != size) {
		if (ret == size)
		break;
		if (ret == (ssize_t)-EAGAIN) {
		mlog(0, "sendpage of size %zu to " SC_NODEF_FMT
		" returned EAGAIN\n", size, SC_NODEF_ARGS(sc));
		cond_resched();
		continue;
		}
		mlog(ML_ERROR, "sendpage of size %zu to " SC_NODEF_FMT
		" failed with %zd\n", size, SC_NODEF_ARGS(sc), ret);
		o2net_ensure_shutdown(nn, sc, 0);
		break;
		}
		}