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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: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This commit is contained in:
Sunil Mushran 2007-07-30 11:02:50 -07:00 committed by Mark Fasheh
parent 480214d71f
commit ce17204ae6
1 changed files with 16 additions and 8 deletions
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24
fs/ocfs2/cluster/tcp.c
View File

@ -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;
}
}