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NFSv4.1: Ensure state manager thread dies on last umount
Currently, the state manager may continue to try recovering state forever even after the last filesystem to reference that nfs_client has umounted. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@kernel.org
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@ -1607,7 +1607,7 @@ static void nfs4_state_manager(struct nfs_client *clp)
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int status = 0;
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/* Ensure exclusive access to NFSv4 state */
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for(;;) {
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do {
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if (test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) {
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/* We're going to have to re-establish a clientid */
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status = nfs4_reclaim_lease(clp);
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@ -1691,7 +1691,7 @@ static void nfs4_state_manager(struct nfs_client *clp)
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break;
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if (test_and_set_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) != 0)
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break;
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}
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} while (atomic_read(&clp->cl_count) > 1);
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return;
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out_error:
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printk(KERN_WARNING "Error: state manager failed on NFSv4 server %s"
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