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NFS: Split out NFS v4 client functions
These functions are only needed by NFS v4, so they can be moved into a v4 specific file. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Bryan Schumaker
Trond Myklebust
parent
fbdefd6442
commit
ec409897e7
@ -56,30 +56,6 @@
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#define NFSDBG_FACILITY NFSDBG_CLIENT
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static DECLARE_WAIT_QUEUE_HEAD(nfs_client_active_wq);
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#ifdef CONFIG_NFS_V4
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/*
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* Get a unique NFSv4.0 callback identifier which will be used
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* by the V4.0 callback service to lookup the nfs_client struct
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*/
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static int nfs_get_cb_ident_idr(struct nfs_client *clp, int minorversion)
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{
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int ret = 0;
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struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
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if (clp->rpc_ops->version != 4 || minorversion != 0)
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return ret;
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retry:
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if (!idr_pre_get(&nn->cb_ident_idr, GFP_KERNEL))
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return -ENOMEM;
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spin_lock(&nn->nfs_client_lock);
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ret = idr_get_new(&nn->cb_ident_idr, clp, &clp->cl_cb_ident);
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spin_unlock(&nn->nfs_client_lock);
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if (ret == -EAGAIN)
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goto retry;
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return ret;
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}
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#endif /* CONFIG_NFS_V4 */
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/*
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* RPC cruft for NFS
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@ -175,75 +151,6 @@ error_0:
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}
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#ifdef CONFIG_NFS_V4
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#ifdef CONFIG_NFS_V4_1
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static void nfs4_shutdown_session(struct nfs_client *clp)
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{
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if (nfs4_has_session(clp)) {
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nfs4_destroy_session(clp->cl_session);
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nfs4_destroy_clientid(clp);
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}
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}
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#else /* CONFIG_NFS_V4_1 */
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static void nfs4_shutdown_session(struct nfs_client *clp)
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{
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}
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#endif /* CONFIG_NFS_V4_1 */
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struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *cl_init)
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{
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int err;
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struct nfs_client *clp = nfs_alloc_client(cl_init);
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if (IS_ERR(clp))
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return clp;
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err = nfs_get_cb_ident_idr(clp, cl_init->minorversion);
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if (err)
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goto error;
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spin_lock_init(&clp->cl_lock);
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INIT_DELAYED_WORK(&clp->cl_renewd, nfs4_renew_state);
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rpc_init_wait_queue(&clp->cl_rpcwaitq, "NFS client");
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clp->cl_state = 1 << NFS4CLNT_LEASE_EXPIRED;
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clp->cl_minorversion = cl_init->minorversion;
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clp->cl_mvops = nfs_v4_minor_ops[cl_init->minorversion];
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return clp;
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error:
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kfree(clp);
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return ERR_PTR(err);
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}
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/*
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* Destroy the NFS4 callback service
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*/
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static void nfs4_destroy_callback(struct nfs_client *clp)
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{
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if (__test_and_clear_bit(NFS_CS_CALLBACK, &clp->cl_res_state))
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nfs_callback_down(clp->cl_mvops->minor_version);
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}
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static void nfs4_shutdown_client(struct nfs_client *clp)
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{
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if (__test_and_clear_bit(NFS_CS_RENEWD, &clp->cl_res_state))
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nfs4_kill_renewd(clp);
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nfs4_shutdown_session(clp);
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nfs4_destroy_callback(clp);
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if (__test_and_clear_bit(NFS_CS_IDMAP, &clp->cl_res_state))
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nfs_idmap_delete(clp);
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rpc_destroy_wait_queue(&clp->cl_rpcwaitq);
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kfree(clp->cl_serverowner);
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kfree(clp->cl_serverscope);
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kfree(clp->cl_implid);
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}
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void nfs4_free_client(struct nfs_client *clp)
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{
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nfs4_shutdown_client(clp);
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nfs_free_client(clp);
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}
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/* idr_remove_all is not needed as all id's are removed by nfs_put_client */
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void nfs_cleanup_cb_ident_idr(struct net *net)
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{
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@ -22,6 +22,97 @@
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*/
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static bool nfs4_disable_idmapping = true;
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/*
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* Get a unique NFSv4.0 callback identifier which will be used
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* by the V4.0 callback service to lookup the nfs_client struct
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*/
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static int nfs_get_cb_ident_idr(struct nfs_client *clp, int minorversion)
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{
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int ret = 0;
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struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
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if (clp->rpc_ops->version != 4 || minorversion != 0)
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return ret;
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retry:
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if (!idr_pre_get(&nn->cb_ident_idr, GFP_KERNEL))
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return -ENOMEM;
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spin_lock(&nn->nfs_client_lock);
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ret = idr_get_new(&nn->cb_ident_idr, clp, &clp->cl_cb_ident);
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spin_unlock(&nn->nfs_client_lock);
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if (ret == -EAGAIN)
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goto retry;
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return ret;
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}
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#ifdef CONFIG_NFS_V4_1
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static void nfs4_shutdown_session(struct nfs_client *clp)
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{
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if (nfs4_has_session(clp)) {
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nfs4_destroy_session(clp->cl_session);
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nfs4_destroy_clientid(clp);
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}
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}
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#else /* CONFIG_NFS_V4_1 */
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static void nfs4_shutdown_session(struct nfs_client *clp)
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{
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}
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#endif /* CONFIG_NFS_V4_1 */
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struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *cl_init)
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{
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int err;
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struct nfs_client *clp = nfs_alloc_client(cl_init);
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if (IS_ERR(clp))
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return clp;
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err = nfs_get_cb_ident_idr(clp, cl_init->minorversion);
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if (err)
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goto error;
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spin_lock_init(&clp->cl_lock);
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INIT_DELAYED_WORK(&clp->cl_renewd, nfs4_renew_state);
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rpc_init_wait_queue(&clp->cl_rpcwaitq, "NFS client");
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clp->cl_state = 1 << NFS4CLNT_LEASE_EXPIRED;
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clp->cl_minorversion = cl_init->minorversion;
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clp->cl_mvops = nfs_v4_minor_ops[cl_init->minorversion];
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return clp;
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error:
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kfree(clp);
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return ERR_PTR(err);
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}
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/*
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* Destroy the NFS4 callback service
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*/
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static void nfs4_destroy_callback(struct nfs_client *clp)
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{
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if (__test_and_clear_bit(NFS_CS_CALLBACK, &clp->cl_res_state))
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nfs_callback_down(clp->cl_mvops->minor_version);
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}
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static void nfs4_shutdown_client(struct nfs_client *clp)
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{
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if (__test_and_clear_bit(NFS_CS_RENEWD, &clp->cl_res_state))
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nfs4_kill_renewd(clp);
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nfs4_shutdown_session(clp);
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nfs4_destroy_callback(clp);
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if (__test_and_clear_bit(NFS_CS_IDMAP, &clp->cl_res_state))
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nfs_idmap_delete(clp);
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rpc_destroy_wait_queue(&clp->cl_rpcwaitq);
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kfree(clp->cl_serverowner);
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kfree(clp->cl_serverscope);
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kfree(clp->cl_implid);
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}
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void nfs4_free_client(struct nfs_client *clp)
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{
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nfs4_shutdown_client(clp);
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nfs_free_client(clp);
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}
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/*
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* Initialize the NFS4 callback service
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*/
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