From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Wang Subject: [RFC PATCH net-next 06/12] tuntap: enable premmption early Date: Mon, 21 May 2018 17:04:27 +0800 Message-ID: <1526893473-20128-7-git-send-email-jasowang@redhat.com> References: <1526893473-20128-1-git-send-email-jasowang@redhat.com> Cc: kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org To: mst@redhat.com, jasowang@redhat.com Return-path: In-Reply-To: <1526893473-20128-1-git-send-email-jasowang@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Signed-off-by: Jason Wang --- 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