linux-kernel - Re: [PATCH] nfsd: fix unused "nn" variable warning in free

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Date:	Wed, 9 Jan 2013 13:39:04 +0400
From:	Stanislav Kinsbursky <skinsbursky@...allels.com>
To:	<bfields@...ldses.org>
CC:	<toralf.foerster@....de>, <linux-nfs@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <devel@...nvz.org>
Subject: Re: [PATCH] nfsd: fix unused "nn" variable warning in free_client()

Bruce, sorry, forgot to add:

Reported-by: Toralf Förster <toralf.foerster@....de>

09.01.2013 13:38, Stanislav Kinsbursky пишет:
> If CONFIG_LOCKDEP is disabled, then there would be a warning like this:
>
>    CC [M]  fs/nfsd/nfs4state.o
> fs/nfsd/nfs4state.c: In function ‘free_client’:
> fs/nfsd/nfs4state.c:1051:19: warning: unused variable ‘nn’ [-Wunused-variable]
>
> So, let's add "maybe_unused" tag to this variable.
>
> Signed-off-by: Stanislav Kinsbursky <skinsbursky@...allels.com>
> ---
>   fs/nfsd/nfs4state.c |    2 +-
>   1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
> index 8f7362c..739a6c2 100644
> --- a/fs/nfsd/nfs4state.c
> +++ b/fs/nfsd/nfs4state.c
> @@ -1048,7 +1048,7 @@ static struct nfs4_client *alloc_client(struct xdr_netobj name)
>   static inline void
>   free_client(struct nfs4_client *clp)
>   {
> -	struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id);
> +	struct nfsd_net __maybe_unused *nn = net_generic(clp->net, nfsd_net_id);
>
>   	lockdep_assert_held(&nn->client_lock);
>   	while (!list_empty(&clp->cl_sessions)) {
>


-- 
Best regards,
Stanislav Kinsbursky
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