add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/nfsd/nfs4state.c
..
..
@@ -507,15 +507,26 @@
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 	return ret;
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 }
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509
 
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-static struct nfsd_file *find_deleg_file(struct nfs4_file *f)
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+static struct nfsd_file *find_any_file_locked(struct nfs4_file *f)
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 {
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-	struct nfsd_file *ret = NULL;
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+	lockdep_assert_held(&f->fi_lock);
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-	spin_lock(&f->fi_lock);
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+	if (f->fi_fds[O_RDWR])
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+		return f->fi_fds[O_RDWR];
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+	if (f->fi_fds[O_WRONLY])
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+		return f->fi_fds[O_WRONLY];
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+	if (f->fi_fds[O_RDONLY])
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+		return f->fi_fds[O_RDONLY];
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+	return NULL;
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+}
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+
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+static struct nfsd_file *find_deleg_file_locked(struct nfs4_file *f)
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+{
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+	lockdep_assert_held(&f->fi_lock);
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+
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 	if (f->fi_deleg_file)
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-		ret = nfsd_file_get(f->fi_deleg_file);
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-	spin_unlock(&f->fi_lock);
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-	return ret;
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+		return f->fi_deleg_file;
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+	return NULL;
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 }
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531
 
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532
 static atomic_long_t num_delegations;
..
..
@@ -1134,9 +1145,9 @@
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 	WARN_ON(!list_empty(&dp->dl_recall_lru));
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 	if (clp->cl_minorversion) {
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+		spin_lock(&clp->cl_lock);
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 		dp->dl_stid.sc_type = NFS4_REVOKED_DELEG_STID;
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 		refcount_inc(&dp->dl_stid.sc_count);
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-		spin_lock(&clp->cl_lock);
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 		list_add(&dp->dl_recall_lru, &clp->cl_revoked);
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 		spin_unlock(&clp->cl_lock);
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 	}
..
..
@@ -2462,9 +2473,11 @@
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 	ols = openlockstateid(st);
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 	oo = ols->st_stateowner;
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 	nf = st->sc_file;
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-	file = find_any_file(nf);
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+
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+	spin_lock(&nf->fi_lock);
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+	file = find_any_file_locked(nf);
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 	if (!file)
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-		return 0;
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+		goto out;
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 	seq_printf(s, "- ");
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 	nfs4_show_stateid(s, &st->sc_stateid);
..
..
@@ -2486,8 +2499,8 @@
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 	seq_printf(s, ", ");
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 	nfs4_show_owner(s, oo);
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 	seq_printf(s, " }\n");
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-	nfsd_file_put(file);
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-
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+out:
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+	spin_unlock(&nf->fi_lock);
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 	return 0;
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 }
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..
..
@@ -2501,9 +2514,10 @@
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 	ols = openlockstateid(st);
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 	oo = ols->st_stateowner;
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 	nf = st->sc_file;
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-	file = find_any_file(nf);
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+	spin_lock(&nf->fi_lock);
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+	file = find_any_file_locked(nf);
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 	if (!file)
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-		return 0;
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+		goto out;
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 	seq_printf(s, "- ");
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 	nfs4_show_stateid(s, &st->sc_stateid);
..
..
@@ -2523,8 +2537,8 @@
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 	seq_printf(s, ", ");
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 	nfs4_show_owner(s, oo);
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 	seq_printf(s, " }\n");
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-	nfsd_file_put(file);
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-
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+out:
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+	spin_unlock(&nf->fi_lock);
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 	return 0;
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 }
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2544
 
..
..
@@ -2536,9 +2550,10 @@
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 	ds = delegstateid(st);
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 	nf = st->sc_file;
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-	file = find_deleg_file(nf);
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+	spin_lock(&nf->fi_lock);
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+	file = find_deleg_file_locked(nf);
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 	if (!file)
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-		return 0;
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+		goto out;
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2557
 
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 	seq_printf(s, "- ");
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 	nfs4_show_stateid(s, &st->sc_stateid);
..
..
@@ -2554,8 +2569,8 @@
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 	seq_printf(s, ", ");
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 	nfs4_show_fname(s, file);
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 	seq_printf(s, " }\n");
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-	nfsd_file_put(file);
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-
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+out:
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+	spin_unlock(&nf->fi_lock);
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 	return 0;
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 }
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..
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@@ -5641,8 +5656,6 @@
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 	if (ZERO_STATEID(stateid) || ONE_STATEID(stateid) ||
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 		CLOSE_STATEID(stateid))
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 		return status;
5644
-	if (!same_clid(&stateid->si_opaque.so_clid, &cl->cl_clientid))
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-		return status;
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 	spin_lock(&cl->cl_lock);
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 	s = find_stateid_locked(cl, stateid);
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 	if (!s)
..
..
@@ -7379,14 +7392,9 @@
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 	struct nfsd_net *nn = net_generic(net, nfsd_net_id);
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 	int ret;
7381
7394
 
7382
-	ret = get_nfsdfs(net);
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+	ret = nfs4_state_create_net(net);
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 	if (ret)
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 		return ret;
7385
-	ret = nfs4_state_create_net(net);
7386
-	if (ret) {
7387
-		mntput(nn->nfsd_mnt);
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-		return ret;
7389
-	}
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 	locks_start_grace(net, &nn->nfsd4_manager);
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 	nfsd4_client_tracking_init(net);
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 	if (nn->track_reclaim_completes && nn->reclaim_str_hashtbl_size == 0)
..
..
@@ -7456,7 +7464,6 @@
7456
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7457
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 	nfsd4_client_tracking_exit(net);
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 	nfs4_state_destroy_net(net);
7459
-	mntput(nn->nfsd_mnt);
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 }
7461
7468
 
7462
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 void