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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2006-01-03 11:55:22 +0300 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2006-01-06 22:58:45 +0300 |
| commit | 433fbe4c8837e3cc2ba6a6374edf28737d01a2e9 (patch) | |
| tree | 9448a58eafca388efaab5d3653c818fe60a4450d /fs/nfs/nfs4state.c | |
| parent | 26e976a884be9aa08f8ff906372f25f68df0d948 (diff) | |
| download | linux-433fbe4c8837e3cc2ba6a6374edf28737d01a2e9.tar.xz | |
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.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 41a5f1a8a984..4ebf4df7f191 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: |