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Commit ce17204a authored by Sunil Mushran's avatar Sunil Mushran Committed by Mark Fasheh
Browse files

ocfs2: Retry sendpage() if it returns EAGAIN 



Instead of treating EAGAIN, returned from sendpage(), as an error, this
patch retries the operation.

Signed-off-by: default avatarSunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: default avatarMark Fasheh <mark.fasheh@oracle.com>
parent 480214d7

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;

	}

}