linux-kernel - [ 16/72] NFSv4: Ensure we throw out bad delegation stateids on NFS4ERR_BAD

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Message-Id: <20120228010430.824361707@linuxfoundation.org>
Date:	Mon, 27 Feb 2012 17:04:45 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk,
	Trond Myklebust <Trond.Myklebust@...app.com>
Subject: [ 16/72] NFSv4: Ensure we throw out bad delegation stateids on NFS4ERR_BAD_STATEID

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

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

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

commit b9f9a03150969e4bd9967c20bce67c4de769058f upstream.

To ensure that we don't just reuse the bad delegation when we attempt to
recover the nfs4_state that received the bad stateid error.

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

---
 fs/nfs/nfs4state.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1071,6 +1071,8 @@ void nfs4_schedule_stateid_recovery(cons
 {
 	struct nfs_client *clp = server->nfs_client;
 
+	if (test_and_clear_bit(NFS_DELEGATED_STATE, &state->flags))
+		nfs_async_inode_return_delegation(state->inode, &state->stateid);
 	nfs4_state_mark_reclaim_nograce(clp, state);
 	nfs4_schedule_state_manager(clp);
 }


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