linux-kernel - Re: [NFS] [PATCH 008 of 11] knfsd: add svc_set_num

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Message-ID: <17613.34313.547132.43455@cse.unsw.edu.au>
Date:	Mon, 31 Jul 2006 14:24:41 +1000
From:	Neil Brown <neilb@...e.de>
To:	Andrew Morton <akpm@...l.org>
Cc:	nfs@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [NFS] [PATCH 008 of 11] knfsd: add svc_set_num_threads

On Sunday July 30, akpm@...l.org wrote:
> On Mon, 31 Jul 2006 10:42:23 +1000
> NeilBrown <neilb@...e.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.

True.

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

Yes - hch has suggested that this needs to be a done.  I had a try and
there were enough complications that I decided to leave it to asked
Greg's NUMA stuff.

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

yep.

NeilBrown
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