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authorBenjamin LaHaise <benjamin.c.lahaise@intel.com>2005-12-13 23:22:32 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-01-03 13:10:45 -0800
commit830a1e5c212fb3fdc83b66359c780c3b3a294897 (patch)
tree232215af3774d78aa179adb1612bfa5257af181d /include/net
parentc1cbe4b7ad0bc4b1d98ea708a3fecb7362aa4088 (diff)
[AF_UNIX]: Remove superfluous reference counting in unix_stream_sendmsg
AF_UNIX stream socket performance on P4 CPUs tends to suffer due to a lot of pipeline flushes from atomic operations. The patch below removes the sock_hold() and sock_put() in unix_stream_sendmsg(). This should be safe as the socket still holds a reference to its peer which is only released after the file descriptor's final user invokes unix_release_sock(). The only consideration is that we must add a memory barrier before setting the peer initially. Signed-off-by: Benjamin LaHaise <benjamin.c.lahaise@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
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