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ocfs2: Use sendmsg(MSG_SPLICE_PAGES) rather than sendpage()

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Switch ocfs2 from using sendpage() to using sendmsg() + MSG_SPLICE_PAGES so
that sendpage can be phased out.

Signed-off-by: David Howells <dhowells@redhat.com>

cc: Mark Fasheh <mark@fasheh.com>
cc: Joel Becker <jlbec@evilplan.org>
cc: Joseph Qi <joseph.qi@linux.alibaba.com>
cc: ocfs2-devel@oss.oracle.com
Link: https://lore.kernel.org/r/20230623225513.2732256-15-dhowells@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
David Howells 2023-06-23 23:55:11 +01:00 committed by Jakub Kicinski
parent 86d7bd6e66
commit e52828cc01
1 changed files with 9 additions and 6 deletions
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15
fs/ocfs2/cluster/tcp.c
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@ -930,19 +930,22 @@ out:
}
static void o2net_sendpage(struct o2net_sock_container *sc,
void *kmalloced_virt,
size_t size)
void *virt, size_t size)
{
struct o2net_node *nn = o2net_nn_from_num(sc->sc_node->nd_num);
struct msghdr msg = {};
struct bio_vec bv;
ssize_t ret;
bvec_set_virt(&bv, virt, size);
iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, &bv, 1, size);
while (1) {
msg.msg_flags = MSG_DONTWAIT | MSG_SPLICE_PAGES;
mutex_lock(&sc->sc_send_lock);
ret = sc->sc_sock->ops->sendpage(sc->sc_sock,
virt_to_page(kmalloced_virt),
offset_in_page(kmalloced_virt),
size, MSG_DONTWAIT);
ret = sock_sendmsg(sc->sc_sock, &msg);
mutex_unlock(&sc->sc_send_lock);
if (ret == size)
break;
if (ret == (ssize_t)-EAGAIN) {