diff options
| author | Alexander Duyck <alexander.h.duyck@intel.com> | 2012-05-03 01:09:42 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-05-03 13:18:37 -0400 |
| commit | 3a7c1ee4ab89f9250b8f82656a7be0ae14aa3691 (patch) | |
| tree | 9dc10e067f2364fd3590b38cd5db495cd09c32e6 /net/ipv4 | |
| parent | 715dc1f342713816d1be1c37643a2c9e6ee181a7 (diff) | |
skb: Add skb_head_is_locked helper function
This patch adds support for a skb_head_is_locked helper function. It is
meant to be used any time we are considering transferring the head from
skb->head to a paged frag. If the head is locked it means we cannot remove
the head from the skb so it must be copied or we must take the skb as a
whole.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/tcp_input.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 84e69e02fe20..7b2d351f24db 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -4568,7 +4568,7 @@ static bool tcp_try_coalesce(struct sock *sk, skb_shinfo(from)->nr_frags >= MAX_SKB_FRAGS) return false; - if (!from->head_frag || skb_cloned(from)) + if (skb_head_is_locked(from)) return false; delta = from->truesize - SKB_DATA_ALIGN(sizeof(struct sk_buff)); |