Thread (27 messages) 27 messages, 3 authors, 2018-05-25
STALE2931d
Revisions (2)
  1. rfc [diff vs current]
  2. rfc current

[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
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