Log request only when they reached a size

Dear list!

I’m new here, so I just hope I’m following the rules.

I would like to send a patch for http_log_module which I made for
version nginx-1.0.10.

My company is in adserving business and it is important for us to log
the big requests with the access_log feature. But we were unable to do
that with nginx, because logging all the requests would produce too much
I/O load on our servers.

So I made a patch for http_log_module to accept a size parameter which
is optional (the last parameter after the buffer). If this size is
provided nginx logs only the big enough requests with access_log (checks
for body_bytes_sent).

I hope you find it useful and you will include this in the upstream.