linux-kernel - [ 12/38] NFSv4: nfs4_locku_done must release the sequence id

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Message-Id: <20121115040933.680223046@linuxfoundation.org>
Date:	Wed, 14 Nov 2012 20:10:09 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	alan@...rguk.ukuu.org.uk,
	Trond Myklebust <Trond.Myklebust@...app.com>
Subject: [ 12/38] NFSv4: nfs4_locku_done must release the sequence id

3.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Trond Myklebust <Trond.Myklebust@...app.com>

commit 2b1bc308f492589f7d49012ed24561534ea2be8c upstream.

If the state recovery machinery is triggered by the call to
nfs4_async_handle_error() then we can deadlock.

Signed-off-by: Trond Myklebust <Trond.Myklebust@...app.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/nfs/nfs4proc.c |    1 +
 1 file changed, 1 insertion(+)

--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -4116,6 +4116,7 @@ static void nfs4_locku_done(struct rpc_t
 				nfs_restart_rpc(task,
 						 calldata->server->nfs_client);
 	}
+	nfs_release_seqid(calldata->arg.seqid);
 }
 
 static void nfs4_locku_prepare(struct rpc_task *task, void *data)


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