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List: linux-nfs
Subject: Re: [PATCH] nfsd41: Deny new lock before RECLAIM_COMPLETE done
From: "J. Bruce Fields" <bfields () fieldses ! org>
Date: 2011-04-27 13:54:22
Message-ID: 20110427135422.GA1618 () fieldses ! org
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On Wed, Apr 27, 2011 at 09:12:00AM +0800, Mi Jinlong wrote:
> Before nfs41 client's RECLAIM_COMPLETE done, nfs server should
> deny it's new lock.
>
> Signed-off-by: Mi Jinlong <mijinlong@cn.fujitsu.com>
Is nfserr_grace the right error? (Honest question, I haven't looked it
up.)
Also I'd think this check should go in nfsd4_open: opens are also
prohibited before RECLAIM_COMPLETE, and if we check there then we don't
need to check here, as you have to have open state before you can do a
lock.
--b.
> ---
> fs/nfsd/nfs4state.c | 9 +++++++++
> 1 files changed, 9 insertions(+), 0 deletions(-)
>
> diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
> index 4b36ec3..43cda94 100644
> --- a/fs/nfsd/nfs4state.c
> +++ b/fs/nfsd/nfs4state.c
> @@ -3803,6 +3803,15 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
> */
> struct nfs4_stateid *open_stp = NULL;
>
> + /*
> + * RFC5661 18.51.3
> + * Before RECLAIM_COMPLETE done, return NFS4ERR_GRACE
> + */
> + status = nfserr_grace;
> + if (nfsd4_has_session(cstate) &&
> + !cstate->session->se_client->cl_firststate)
> + goto out;
> +
> status = nfserr_stale_clientid;
> if (!nfsd4_has_session(cstate) &&
> STALE_CLIENTID(&lock->lk_new_clientid))
> --
> 1.7.4.1
>
>
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