NFSv4.1: Allow test_stateid to handle session errors without waiting
If the server crashes while we're testing stateids for validity, then we want to initiate session recovery. Usually, we will be calling from a state manager thread, though, so we don't really want to wait. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Tested-by: Oleg Drokin <green@linuxhacker.ru> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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@ -8797,6 +8797,23 @@ static int _nfs41_test_stateid(struct nfs_server *server,
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return -res.status;
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}
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static void nfs4_handle_delay_or_session_error(struct nfs_server *server,
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int err, struct nfs4_exception *exception)
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{
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exception->retry = 0;
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switch(err) {
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case -NFS4ERR_DELAY:
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nfs4_handle_exception(server, err, exception);
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break;
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case -NFS4ERR_BADSESSION:
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case -NFS4ERR_BADSLOT:
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case -NFS4ERR_BAD_HIGH_SLOT:
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case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
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case -NFS4ERR_DEADSESSION:
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nfs4_do_handle_exception(server, err, exception);
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}
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}
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/**
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* nfs41_test_stateid - perform a TEST_STATEID operation
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*
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@ -8816,9 +8833,7 @@ static int nfs41_test_stateid(struct nfs_server *server,
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int err;
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do {
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err = _nfs41_test_stateid(server, stateid, cred);
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if (err != -NFS4ERR_DELAY)
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break;
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nfs4_handle_exception(server, err, &exception);
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nfs4_handle_delay_or_session_error(server, err, &exception);
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} while (exception.retry);
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return err;
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}
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