[RFC PATCH net-next 06/12] tuntap: enable premmption early
From: Jason Wang <jasowang@redhat.com>
Date: 2018-05-21 09:05:11
Also in:
kvm, lkml
Subsystem:
networking drivers, the rest, tun/tap driver · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Willem de Bruijn, Jason Wang
Signed-off-by: Jason Wang <jasowang@redhat.com> --- drivers/net/tun.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 44d4f3d..24ecd82 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c@@ -1697,6 +1697,8 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun, goto err_xdp; } } + rcu_read_unlock(); + preempt_enable(); skb = build_skb(buf, buflen); if (!skb) {
@@ -1710,9 +1712,6 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun, get_page(alloc_frag->page); alloc_frag->offset += buflen; - rcu_read_unlock(); - preempt_enable(); - return skb; err_redirect:
--
2.7.4