K 10
svn:author
V 7
glebius
K 8
svn:date
V 27
2013-11-26T12:00:56.538610Z
K 7
svn:log
V 436
Remove two mbuf chain traversals from sendfile(). The first one is
a short traversal of of headers chain done in m_last(), and the second
one is m_length() done right before the socket write.

To achieve this, store header mbuf in *mh and its tail in *mhtail.
Stack the *mh and *m out of the inner loop, before the socket write.

While here, simplify the headers handling block of code.

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.

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