1 files changed, 70 insertions, 8 deletions

diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index cf35ad3f818a..2aaea9c98c2c 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -338,6 +338,14 @@ again:
 		/* Match the xprt security policy */
 		if (clp->cl_xprtsec.policy != data->xprtsec.policy)
 			continue;
+		if (clp->cl_xprtsec.policy == RPC_XPRTSEC_TLS_X509) {
+			if (clp->cl_xprtsec.cert_serial !=
+			    data->xprtsec.cert_serial)
+				continue;
+			if (clp->cl_xprtsec.privkey_serial !=
+			    data->xprtsec.privkey_serial)
+				continue;
+		}
 
 		refcount_inc(&clp->cl_count);
 		return clp;
@@ -682,6 +690,44 @@ struct nfs_client *nfs_init_client(struct nfs_client *clp,
 }
 EXPORT_SYMBOL_GPL(nfs_init_client);
 
+static void nfs4_server_set_init_caps(struct nfs_server *server)
+{
+#if IS_ENABLED(CONFIG_NFS_V4)
+	/* Set the basic capabilities */
+	server->caps = server->nfs_client->cl_mvops->init_caps;
+	if (server->flags & NFS_MOUNT_NORDIRPLUS)
+		server->caps &= ~NFS_CAP_READDIRPLUS;
+	if (server->nfs_client->cl_proto == XPRT_TRANSPORT_RDMA)
+		server->caps &= ~NFS_CAP_READ_PLUS;
+
+	/*
+	 * Don't use NFS uid/gid mapping if we're using AUTH_SYS or lower
+	 * authentication.
+	 */
+	if (nfs4_disable_idmapping &&
+	    server->client->cl_auth->au_flavor == RPC_AUTH_UNIX)
+		server->caps |= NFS_CAP_UIDGID_NOMAP;
+#endif
+}
+
+void nfs_server_set_init_caps(struct nfs_server *server)
+{
+	switch (server->nfs_client->rpc_ops->version) {
+	case 2:
+		server->caps = NFS_CAP_HARDLINKS | NFS_CAP_SYMLINKS;
+		break;
+	case 3:
+		server->caps = NFS_CAP_HARDLINKS | NFS_CAP_SYMLINKS;
+		if (!(server->flags & NFS_MOUNT_NORDIRPLUS))
+			server->caps |= NFS_CAP_READDIRPLUS;
+		break;
+	default:
+		nfs4_server_set_init_caps(server);
+		break;
+	}
+}
+EXPORT_SYMBOL_GPL(nfs_server_set_init_caps);
+
 /*
  * Create a version 2 or 3 client
  */
@@ -726,7 +772,6 @@ static int nfs_init_server(struct nfs_server *server,
 	/* Initialise the client representation from the mount data */
 	server->flags = ctx->flags;
 	server->options = ctx->options;
-	server->caps |= NFS_CAP_HARDLINKS | NFS_CAP_SYMLINKS;
 
 	switch (clp->rpc_ops->version) {
 	case 2:
@@ -739,10 +784,18 @@ static int nfs_init_server(struct nfs_server *server,
 		server->fattr_valid = NFS_ATTR_FATTR_V4;
 	}
 
-	if (ctx->rsize)
+	if (ctx->bsize) {
+		server->bsize = ctx->bsize;
+		server->automount_inherit |= NFS_AUTOMOUNT_INHERIT_BSIZE;
+	}
+	if (ctx->rsize) {
 		server->rsize = nfs_io_size(ctx->rsize, clp->cl_proto);
-	if (ctx->wsize)
+		server->automount_inherit |= NFS_AUTOMOUNT_INHERIT_RSIZE;
+	}
+	if (ctx->wsize) {
 		server->wsize = nfs_io_size(ctx->wsize, clp->cl_proto);
+		server->automount_inherit |= NFS_AUTOMOUNT_INHERIT_WSIZE;
+	}
 
 	server->acregmin = ctx->acregmin * HZ;
 	server->acregmax = ctx->acregmax * HZ;
@@ -762,6 +815,8 @@ static int nfs_init_server(struct nfs_server *server,
 	if (error < 0)
 		goto error;
 
+	nfs_server_set_init_caps(server);
+
 	/* Preserve the values of mount_server-related mount options */
 	if (ctx->mount_server.addrlen) {
 		memcpy(&server->mountd_address, &ctx->mount_server.address,
@@ -814,7 +869,6 @@ static void nfs_server_set_fsinfo(struct nfs_server *server,
 		server->wsize = max_rpc_payload;
 	if (server->wsize > NFS_MAX_FILE_IO_SIZE)
 		server->wsize = NFS_MAX_FILE_IO_SIZE;
-	server->wpages = (server->wsize + PAGE_SIZE - 1) >> PAGE_SHIFT;
 
 	server->wtmult = nfs_block_bits(fsinfo->wtmult, NULL);
 
@@ -831,7 +885,6 @@ static void nfs_server_set_fsinfo(struct nfs_server *server,
 
 	server->maxfilesize = fsinfo->maxfilesize;
 
-	server->time_delta = fsinfo->time_delta;
 	server->change_attr_type = fsinfo->change_attr_type;
 
 	server->clone_blksize = fsinfo->clone_blksize;
@@ -851,6 +904,8 @@ static void nfs_server_set_fsinfo(struct nfs_server *server,
 
 	if (fsinfo->xattr_support)
 		server->caps |= NFS_CAP_XATTR;
+	else
+		server->caps &= ~NFS_CAP_XATTR;
 #endif
 }
 
@@ -930,13 +985,17 @@ EXPORT_SYMBOL_GPL(nfs_probe_server);
 void nfs_server_copy_userdata(struct nfs_server *target, struct nfs_server *source)
 {
 	target->flags = source->flags;
-	target->rsize = source->rsize;
-	target->wsize = source->wsize;
+	target->automount_inherit = source->automount_inherit;
+	if (source->automount_inherit & NFS_AUTOMOUNT_INHERIT_BSIZE)
+		target->bsize = source->bsize;
+	if (source->automount_inherit & NFS_AUTOMOUNT_INHERIT_RSIZE)
+		target->rsize = source->rsize;
+	if (source->automount_inherit & NFS_AUTOMOUNT_INHERIT_WSIZE)
+		target->wsize = source->wsize;
 	target->acregmin = source->acregmin;
 	target->acregmax = source->acregmax;
 	target->acdirmin = source->acdirmin;
 	target->acdirmax = source->acdirmax;
-	target->caps = source->caps;
 	target->options = source->options;
 	target->auth_info = source->auth_info;
 	target->port = source->port;
@@ -1007,6 +1066,7 @@ struct nfs_server *nfs_alloc_server(void)
 	INIT_LIST_HEAD(&server->ss_src_copies);
 
 	atomic_set(&server->active, 0);
+	atomic_long_set(&server->nr_active_delegations, 0);
 
 	server->io_stats = nfs_alloc_iostats();
 	if (!server->io_stats) {
@@ -1170,6 +1230,8 @@ struct nfs_server *nfs_clone_server(struct nfs_server *source,
 	if (error < 0)
 		goto out_free_server;
 
+	nfs_server_set_init_caps(server);
+
 	/* probe the filesystem info for this server filesystem */
 	error = nfs_probe_server(server, fh);
 	if (error < 0)