| commit | 1fd63041c49c5c6ed1fe58b7bccc2de462d51e2b | [log] [tgz] |
|---|---|---|
| author | Eric Dumazet <eric.dumazet@gmail.com> | Thu Sep 02 23:09:32 2010 +0000 |
| committer | David S. Miller <davem@davemloft.net> | Mon Sep 06 18:24:59 2010 -0700 |
| tree | aac2e108e2c8c545669bd9fe655f04ac026f5e15 | |
| parent | 9d348af47656a65a697ff55a53daf294ea4d5662 [diff] |
net: pskb_expand_head() optimization pskb_expand_head() blindly takes references on fragments before calling skb_release_data(), potentially releasing these references. We can add a fast path, avoiding these atomic operations, if we own the last reference on skb->head. Based on a previous patch from David Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>