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NFSv4: Ensure that clientid and session establishment can time out 

The following patch ensures that we do not get permanently trapped in
the RPC layer when trying to establish a new client id or session.
This again ensures that the state manager can finish in a timely
fashion when the last filesystem to reference the nfs_client exits.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2011-04-24 14:29:33 -04:00
parent 7494d00c7b
commit 1bd714f2a1
2 changed files with 8 additions and 6 deletions
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13
fs/nfs/nfs4proc.c
View File

@ -3751,7 +3751,7 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
sizeof(setclientid.sc_uaddr), "%s.%u.%u",
clp->cl_ipaddr, port >> 8, port & 255);
status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
if (status != -NFS4ERR_CLID_INUSE)
break;
if (loop != 0) {
@ -3779,7 +3779,7 @@ int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
int status;
now = jiffies;
status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
if (status == 0) {
spin_lock(&clp->cl_lock);
clp->cl_lease_time = fsinfo.lease_time * HZ;
@ -4793,7 +4793,7 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
init_utsname()->domainname,
clp->cl_rpcclient->cl_auth->au_flavor);
status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
if (!status)
status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags);
dprintk("<-- %s status= %d\n", __func__, status);
@ -4876,7 +4876,8 @@ int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo)
.rpc_client = clp->cl_rpcclient,
.rpc_message = &msg,
.callback_ops = &nfs4_get_lease_time_ops,
.callback_data = &data
.callback_data = &data,
.flags = RPC_TASK_TIMEOUT,
};
int status;
@ -5178,7 +5179,7 @@ static int _nfs4_proc_create_session(struct nfs_client *clp)
nfs4_init_channel_attrs(&args);
args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN);
status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0);
status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
if (!status)
/* Verify the session's negotiated channel_attrs values */
@ -5245,7 +5246,7 @@ int nfs4_proc_destroy_session(struct nfs4_session *session)
msg.rpc_argp = session;
msg.rpc_resp = NULL;
msg.rpc_cred = NULL;
status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0);
status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
if (status)
printk(KERN_WARNING

1
fs/nfs/nfs4state.c
View File

@ -1604,6 +1604,7 @@ static void nfs4_set_lease_expired(struct nfs_client *clp, int status)
clear_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state);
break;
case -NFS4ERR_DELAY:
case -ETIMEDOUT:
case -EAGAIN:
ssleep(1);
break;