linux-kernel - Re: [PATCH 007 of 11] knfsd: add svc

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Message-Id: <20060730210507.12e33f56.akpm@osdl.org>
Date:	Sun, 30 Jul 2006 21:05:07 -0700
From:	Andrew Morton <akpm@...l.org>
To:	NeilBrown <neilb@...e.de>
Cc:	nfs@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 007 of 11] knfsd: add svc_get

On Mon, 31 Jul 2006 10:42:19 +1000
NeilBrown <neilb@...e.de> wrote:

>  /*
> + * We use sv_nrthreads as a reference count.  svc_destroy() drops
> + * this refcount, so we need to bump it up around operations that
> + * change the number of threads.  Horrible, but there it is.
> + * Should be called with the BKL held.
> + */
> +static inline void svc_get(struct svc_serv *serv)
> +{
> +	serv->sv_nrthreads++;
> +}

It's a bit odd for a numa-scalability patch to be increasing our dependency
upon lock_kernel()...

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