nfsd4: centralize renew_client() calls

There doesn't seem to be any harm to renewing the client a bit earlier,
when it is looked up.  That saves us from having to sprinkle
renew_client calls over quite so many places.

Also remove a redundant comment and do a little cleanup.

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

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 2042805..d90461e 100644 (file)
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -931,9 +931,6 @@ renew_client_locked(struct nfs4_client *clp)
                return;
        }
 
-       /*
-       * Move client to the end to the LRU list.
-       */
        dprintk("renewing client (clientid %08x/%08x)\n", 
                        clp->cl_clientid.cl_boot, 
                        clp->cl_clientid.cl_id);
@@ -1220,8 +1217,10 @@ find_confirmed_client(clientid_t *clid)
        unsigned int idhashval = clientid_hashval(clid->cl_id);
 
        list_for_each_entry(clp, &conf_id_hashtbl[idhashval], cl_idhash) {
-               if (same_clid(&clp->cl_clientid, clid))
+               if (same_clid(&clp->cl_clientid, clid)) {
+                       renew_client(clp);
                        return clp;
+               }
        }
        return NULL;
 }
@@ -2372,11 +2371,15 @@ same_owner_str(struct nfs4_stateowner *sop, struct xdr_netobj *owner,
 static struct nfs4_openowner *
 find_openstateowner_str(unsigned int hashval, struct nfsd4_open *open)
 {
-       struct nfs4_stateowner *so = NULL;
+       struct nfs4_stateowner *so;
+       struct nfs4_openowner *oo;
 
        list_for_each_entry(so, &open_ownerstr_hashtbl[hashval], so_strhash) {
-               if (same_owner_str(so, &open->op_owner, &open->op_clientid))
-                       return container_of(so, struct nfs4_openowner, oo_owner);
+               if (same_owner_str(so, &open->op_owner, &open->op_clientid)) {
+                       oo = openowner(so);
+                       renew_client(oo->oo_owner.so_client);
+                       return oo;
+               }
        }
        return NULL;
 }
@@ -2536,7 +2539,6 @@ renew:
                open->op_openowner = oo;
        }
        list_del_init(&oo->oo_close_lru);
-       renew_client(oo->oo_owner.so_client);
        return nfs_ok;
 }
 
@@ -2970,7 +2972,6 @@ nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
                dprintk("nfsd4_renew: clientid not found!\n");
                goto out;
        }
-       renew_client(clp);
        status = nfserr_cb_path_down;
        if (!list_empty(&clp->cl_delegations)
                        && clp->cl_cb_state != NFSD4_CB_UP)
@@ -3275,7 +3276,6 @@ nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
                status = nfs4_check_delegmode(dp, flags);
                if (status)
                        goto out;
-               renew_client(dp->dl_stid.sc_client);
                if (filpp) {
                        *filpp = dp->dl_file->fi_deleg_file;
                        BUG_ON(!*filpp);
@@ -3293,7 +3293,6 @@ nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
                status = nfs4_check_openmode(stp, flags);
                if (status)
                        goto out;
-               renew_client(stp->st_stateowner->so_client);
                if (filpp) {
                        if (flags & RD_STATE)
                                *filpp = find_readable_file(stp->st_file);
@@ -3412,7 +3411,6 @@ nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid,
                return status;
        *stpp = openlockstateid(s);
        cstate->replay_owner = (*stpp)->st_stateowner;
-       renew_client((*stpp)->st_stateowner->so_client);
 
        return nfs4_seqid_op_checks(cstate, stateid, seqid, *stpp);
 }
@@ -3643,7 +3641,6 @@ nfsd4_delegreturn(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
        status = check_stateid_generation(stateid, &dp->dl_stid.sc_stateid, nfsd4_has_session(cstate));
        if (status)
                goto out;
-       renew_client(dp->dl_stid.sc_client);
 
        unhash_delegation(dp);
 out: