2.6.32-longterm review patch.  If anyone has any objections, please let me know.

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

From: Trond Myklebust <[email protected]>

commit 4f7cdf18e14f81860b856ef7694ef58eb1a751c0 upstream.

nfs4_recovery_handle_error() will correctly handle errors such as
NFS4ERR_CB_PATH_DOWN, however because they are still passed back to the
main loop in nfs4_state_manager(), they can cause the latter to exit
prematurely.

Fix this by letting nfs4_recovery_handle_error() change the error value in
cases where there is no action required by the caller.

Signed-off-by: Trond Myklebust <[email protected]>
Cc: Chuck Lever <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 fs/nfs/nfs4state.c |   11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1051,12 +1051,12 @@ static void nfs4_state_end_reclaim_nogra
        clear_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state);
 }
 
-static void nfs4_recovery_handle_error(struct nfs_client *clp, int error)
+static int nfs4_recovery_handle_error(struct nfs_client *clp, int error)
 {
        switch (error) {
                case -NFS4ERR_CB_PATH_DOWN:
                        nfs_handle_cb_pathdown(clp);
-                       break;
+                       return 0;
                case -NFS4ERR_STALE_CLIENTID:
                case -NFS4ERR_LEASE_MOVED:
                        set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
@@ -1075,6 +1075,7 @@ static void nfs4_recovery_handle_error(s
                case -NFS4ERR_SEQ_MISORDERED:
                        set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state);
        }
+       return error;
 }
 
 static int nfs4_do_reclaim(struct nfs_client *clp, const struct 
nfs4_state_recovery_ops *ops)
@@ -1094,8 +1095,7 @@ restart:
                if (status < 0) {
                        set_bit(ops->owner_flag_bit, &sp->so_flags);
                        nfs4_put_state_owner(sp);
-                       nfs4_recovery_handle_error(clp, status);
-                       return status;
+                       return nfs4_recovery_handle_error(clp, status);
                }
                nfs4_put_state_owner(sp);
                goto restart;
@@ -1125,8 +1125,7 @@ static int nfs4_check_lease(struct nfs_c
        status = ops->renew_lease(clp, cred);
        put_rpccred(cred);
 out:
-       nfs4_recovery_handle_error(clp, status);
-       return status;
+       return nfs4_recovery_handle_error(clp, status);
 }
 
 static int nfs4_reclaim_lease(struct nfs_client *clp)


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