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authorTrond Myklebust <Trond.Myklebust@netapp.com>2006-01-03 09:55:22 +0100
committerTrond Myklebust <Trond.Myklebust@netapp.com>2006-01-06 14:58:45 -0500
commit433fbe4c8837e3cc2ba6a6374edf28737d01a2e9 (patch)
tree9448a58eafca388efaab5d3653c818fe60a4450d /fs/nfs/nfs4state.c
parent26e976a884be9aa08f8ff906372f25f68df0d948 (diff)
NFSv4: State recovery cleanup
Use wait_on_bit() when waiting for state recovery to complete. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4state.c')
-rw-r--r--fs/nfs/nfs4state.c23
1 files changed, 13 insertions, 10 deletions
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 41a5f1a8a98..4ebf4df7f19 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -106,11 +106,10 @@ nfs4_alloc_client(struct in_addr *addr)
INIT_WORK(&clp->cl_recoverd, nfs4_recover_state, clp);
INIT_WORK(&clp->cl_renewd, nfs4_renew_state, clp);
INIT_LIST_HEAD(&clp->cl_superblocks);
- init_waitqueue_head(&clp->cl_waitq);
rpc_init_wait_queue(&clp->cl_rpcwaitq, "NFS4 client");
clp->cl_rpcclient = ERR_PTR(-EINVAL);
clp->cl_boot_time = CURRENT_TIME;
- clp->cl_state = 1 << NFS4CLNT_OK;
+ clp->cl_state = 0;
return clp;
}
@@ -193,7 +192,6 @@ nfs4_put_client(struct nfs4_client *clp)
list_del(&clp->cl_servers);
spin_unlock(&state_spinlock);
BUG_ON(!list_empty(&clp->cl_superblocks));
- wake_up_all(&clp->cl_waitq);
rpc_wake_up(&clp->cl_rpcwaitq);
nfs4_kill_renewd(clp);
nfs4_free_client(clp);
@@ -741,6 +739,15 @@ struct reclaimer_args {
struct completion complete;
};
+static inline void nfs4_clear_recover_bit(struct nfs4_client *clp)
+{
+ smp_mb__before_clear_bit();
+ clear_bit(NFS4CLNT_STATE_RECOVER, &clp->cl_state);
+ smp_mb__after_clear_bit();
+ wake_up_bit(&clp->cl_state, NFS4CLNT_STATE_RECOVER);
+ rpc_wake_up(&clp->cl_rpcwaitq);
+}
+
/*
* State recovery routine
*/
@@ -760,9 +767,7 @@ nfs4_recover_state(void *data)
wait_for_completion(&args.complete);
return;
out_failed_clear:
- set_bit(NFS4CLNT_OK, &clp->cl_state);
- wake_up_all(&clp->cl_waitq);
- rpc_wake_up(&clp->cl_rpcwaitq);
+ nfs4_clear_recover_bit(clp);
}
/*
@@ -773,7 +778,7 @@ nfs4_schedule_state_recovery(struct nfs4_client *clp)
{
if (!clp)
return;
- if (test_and_clear_bit(NFS4CLNT_OK, &clp->cl_state))
+ if (test_and_set_bit(NFS4CLNT_STATE_RECOVER, &clp->cl_state) == 0)
schedule_work(&clp->cl_recoverd);
}
@@ -943,13 +948,11 @@ restart_loop:
}
nfs_delegation_reap_unclaimed(clp);
out:
- set_bit(NFS4CLNT_OK, &clp->cl_state);
up_write(&clp->cl_sem);
unlock_kernel();
- wake_up_all(&clp->cl_waitq);
- rpc_wake_up(&clp->cl_rpcwaitq);
if (status == -NFS4ERR_CB_PATH_DOWN)
nfs_handle_cb_pathdown(clp);
+ nfs4_clear_recover_bit(clp);
nfs4_put_client(clp);
return 0;
out_error: