提交 ce17204a 编写于 作者: S Sunil Mushran 提交者: Mark Fasheh

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: NSunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>
上级 480214d7
......@@ -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;
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) {
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)
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;
}
}
......
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