nfsd: add nfsd/clients directory

I plan to expose some information about nfsv4 clients here.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 15 insertions, 8 deletions

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index de68c3cbea2b..7d8d1fcc8831 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1881,20 +1881,19 @@ err_no_name:
 
 static void __free_client(struct kref *k)
 {
-	struct nfs4_client *clp = container_of(k, struct nfs4_client, cl_ref);
+	struct nfsdfs_client *c = container_of(k, struct nfsdfs_client, cl_ref);
+	struct nfs4_client *clp = container_of(c, struct nfs4_client, cl_nfsdfs);
 
 	free_svc_cred(&clp->cl_cred);
 	kfree(clp->cl_ownerstr_hashtbl);
 	kfree(clp->cl_name.data);
 	idr_destroy(&clp->cl_stateids);
-	if (clp->cl_nfsd_dentry)
-		nfsd_client_rmdir(clp->cl_nfsd_dentry);
 	kmem_cache_free(client_slab, clp);
 }
 
 void drop_client(struct nfs4_client *clp)
 {
-	kref_put(&clp->cl_ref, __free_client);
+	kref_put(&clp->cl_nfsdfs.cl_ref, __free_client);
 }
 
 static void
@@ -1909,6 +1908,8 @@ free_client(struct nfs4_client *clp)
 		free_session(ses);
 	}
 	rpc_destroy_wait_queue(&clp->cl_cb_waitq);
+	if (clp->cl_nfsd_dentry)
+		nfsd_client_rmdir(clp->cl_nfsd_dentry);
 	drop_client(clp);
 }
 
@@ -2220,6 +2221,7 @@ static struct nfs4_client *create_client(struct xdr_netobj name,
 	struct sockaddr *sa = svc_addr(rqstp);
 	int ret;
 	struct net *net = SVC_NET(rqstp);
+	struct nfsd_net *nn = net_generic(net, nfsd_net_id);
 
 	clp = alloc_client(name);
 	if (clp == NULL)
@@ -2230,8 +2232,8 @@ static struct nfs4_client *create_client(struct xdr_netobj name,
 		free_client(clp);
 		return NULL;
 	}
-
-	kref_init(&clp->cl_ref);
+	gen_clid(clp, nn);
+	kref_init(&clp->cl_nfsdfs.cl_ref);
 	nfsd4_init_cb(&clp->cl_cb_null, clp, NULL, NFSPROC4_CLNT_CB_NULL);
 	clp->cl_time = get_seconds();
 	clear_bit(0, &clp->cl_cb_slot_busy);
@@ -2239,6 +2241,12 @@ static struct nfs4_client *create_client(struct xdr_netobj name,
 	rpc_copy_addr((struct sockaddr *) &clp->cl_addr, sa);
 	clp->cl_cb_session = NULL;
 	clp->net = net;
+	clp->cl_nfsd_dentry = nfsd_client_mkdir(nn, &clp->cl_nfsdfs,
+						clp->cl_clientid.cl_id);
+	if (!clp->cl_nfsd_dentry) {
+		free_client(clp);
+		return NULL;
+	}
 	return clp;
 }
 
@@ -2683,7 +2691,6 @@ out_new:
 	new->cl_spo_must_allow.u.words[0] = exid->spo_must_allow[0];
 	new->cl_spo_must_allow.u.words[1] = exid->spo_must_allow[1];
 
-	gen_clid(new, nn);
 	add_to_unconfirmed(new);
 	swap(new, conf);
 out_copy:
@@ -3427,7 +3434,7 @@ nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		copy_clid(new, conf);
 		gen_confirm(new, nn);
 	} else /* case 4 (new client) or cases 2, 3 (client reboot): */
-		gen_clid(new, nn);
+		;
 	new->cl_minorversion = 0;
 	gen_callback(new, setclid, rqstp);
 	add_to_unconfirmed(new);