Customizing 'upstream response is buffered'?

In my logs there are plenty of messages like:

2007/12/02 13:54:48 [warn] 14318#0: *66896 an upstream response is
buffered to a temporary file /var/cache/nginx/proxy/2/03/0000000032
while reading upstream, client: (…)

Considering I use nginx on the limited memory VPS and some of the
HTML/JS files I serve are large, disk caching may be a good thing. So
I am not particularly concerned about this (am I right?)

Is it possible to disable this message somehow? I would not like
to disable all warnings (there may happen important warnings, and
I would not like to increase proxy buffers (as I said, lowmem VPS)

I use stable nginx (0.5.32)

PS The ideal solution would be if nginx emitted such message only once
per served URL, without repeats, but this is probably to
sophisticated…

On Tue, Dec 04, 2007 at 03:49:19PM +0100, Marcin K. wrote:

Is it possible to disable this message somehow? I would not like
to disable all warnings (there may happen important warnings, and
I would not like to increase proxy buffers (as I said, lowmem VPS)

I use stable nginx (0.5.32)

PS The ideal solution would be if nginx emitted such message only once
per served URL, without repeats, but this is probably to
sophisticated…

Now the only way:
error_log /path/to/log error;