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Date: Sun, 30 Jul 2006 21:11:30 -0700
From: Andrew Morton <akpm@osdl.org>
To: NeilBrown <neilb@suse.de>
Cc: nfs@lists.sourceforge.net, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 008 of 11] knfsd: add svc_set_num_threads
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On Mon, 31 Jul 2006 10:42:23 +1000
NeilBrown <neilb@suse.de> wrote:

> +	/* destroy old threads */
> +	while (nrservs < 0 &&
> +	       (victim = choose_victim(serv, pool, &state)) != NULL) {
> +		send_sig(serv->sv_kill_signal, victim, 1);
> +		nrservs++;

Using signals to communicate with kernel threads is rather baroque - we
have a range of less klunky ways of controlling kernel threads in-kernel.

The containers guys are going through converting lots of these things over
to the kthread API - I believe it's a requirement for containerisation.

nfsd/rpc is going to be one of the hard ones to convert, but it's going to
happen.