19 static struct dentry *drbd_debugfs_root;
20 static struct dentry *drbd_debugfs_version;
21 static struct dentry *drbd_debugfs_resources;
22 static struct dentry *drbd_debugfs_minors;
425 static inline int debugfs_positive(struct dentry *dentry)  in debugfs_positive()  argument
427         return d_really_is_positive(dentry) && !d_unhashed(dentry);  in debugfs_positive()
435 	struct dentry *parent;  in drbd_single_open()
440 	parent = file->f_path.dentry->d_parent;  in drbd_single_open()
447 	if (debugfs_positive(file->f_path.dentry)  in drbd_single_open()
484 	struct dentry *dentry;  in drbd_debugfs_resource_add()  local
488 	dentry = debugfs_create_dir(resource->name, drbd_debugfs_resources);  in drbd_debugfs_resource_add()
489 	if (IS_ERR_OR_NULL(dentry))  in drbd_debugfs_resource_add()
491 	resource->debugfs_res = dentry;  in drbd_debugfs_resource_add()
493 	dentry = debugfs_create_dir("volumes", resource->debugfs_res);  in drbd_debugfs_resource_add()
494 	if (IS_ERR_OR_NULL(dentry))  in drbd_debugfs_resource_add()
496 	resource->debugfs_res_volumes = dentry;  in drbd_debugfs_resource_add()
498 	dentry = debugfs_create_dir("connections", resource->debugfs_res);  in drbd_debugfs_resource_add()
499 	if (IS_ERR_OR_NULL(dentry))  in drbd_debugfs_resource_add()
501 	resource->debugfs_res_connections = dentry;  in drbd_debugfs_resource_add()
503 	dentry = debugfs_create_file("in_flight_summary", S_IRUSR|S_IRGRP,  in drbd_debugfs_resource_add()
506 	if (IS_ERR_OR_NULL(dentry))  in drbd_debugfs_resource_add()
508 	resource->debugfs_res_in_flight_summary = dentry;  in drbd_debugfs_resource_add()
516 static void drbd_debugfs_remove(struct dentry **dp)  in drbd_debugfs_remove()
654 	struct dentry *conns_dir = connection->resource->debugfs_res_connections;  in drbd_debugfs_connection_add()
655 	struct dentry *dentry;  in drbd_debugfs_connection_add()  local
662 	dentry = debugfs_create_dir("peer", conns_dir);  in drbd_debugfs_connection_add()
663 	if (IS_ERR_OR_NULL(dentry))  in drbd_debugfs_connection_add()
665 	connection->debugfs_conn = dentry;  in drbd_debugfs_connection_add()
667 	dentry = debugfs_create_file("callback_history", S_IRUSR|S_IRGRP,  in drbd_debugfs_connection_add()
670 	if (IS_ERR_OR_NULL(dentry))  in drbd_debugfs_connection_add()
672 	connection->debugfs_conn_callback_history = dentry;  in drbd_debugfs_connection_add()
674 	dentry = debugfs_create_file("oldest_requests", S_IRUSR|S_IRGRP,  in drbd_debugfs_connection_add()
677 	if (IS_ERR_OR_NULL(dentry))  in drbd_debugfs_connection_add()
679 	connection->debugfs_conn_oldest_requests = dentry;  in drbd_debugfs_connection_add()
810 	struct dentry *vols_dir = device->resource->debugfs_res_volumes;  in drbd_debugfs_device_attr()
815 	struct dentry *dentry;  in drbd_debugfs_device_attr()  local
820 	dentry = debugfs_create_dir(vnr_buf, vols_dir);  in drbd_debugfs_device_attr()
821 	if (IS_ERR_OR_NULL(dentry))  in drbd_debugfs_device_attr()
823 	device->debugfs_vol = dentry;  in drbd_debugfs_device_attr()
830 	dentry = debugfs_create_symlink(minor_buf, drbd_debugfs_minors, slink_name);  in drbd_debugfs_device_attr()
833 	if (IS_ERR_OR_NULL(dentry))  in drbd_debugfs_device_attr()
835 	device->debugfs_minor = dentry;  in drbd_debugfs_device_attr()
838 	dentry = debugfs_create_file(#name, S_IRUSR|S_IRGRP,	\  in drbd_debugfs_device_attr()
841 	if (IS_ERR_OR_NULL(dentry))				\  in drbd_debugfs_device_attr()
843 	device->debugfs_vol_ ## name = dentry;			\  in drbd_debugfs_device_attr()
870 	struct dentry *conn_dir = peer_device->connection->debugfs_conn;  in drbd_debugfs_peer_device_add()
871 	struct dentry *dentry;  in drbd_debugfs_peer_device_add()  local
878 	dentry = debugfs_create_dir(vnr_buf, conn_dir);  in drbd_debugfs_peer_device_add()
879 	if (IS_ERR_OR_NULL(dentry))  in drbd_debugfs_peer_device_add()
881 	peer_device->debugfs_peer_dev = dentry;  in drbd_debugfs_peer_device_add()
929 	struct dentry *dentry;  in drbd_debugfs_init()  local
931 	dentry = debugfs_create_dir("drbd", NULL);  in drbd_debugfs_init()
932 	if (IS_ERR_OR_NULL(dentry))  in drbd_debugfs_init()
934 	drbd_debugfs_root = dentry;  in drbd_debugfs_init()
936 	dentry = debugfs_create_file("version", 0444, drbd_debugfs_root, NULL, &drbd_version_fops);  in drbd_debugfs_init()
937 	if (IS_ERR_OR_NULL(dentry))  in drbd_debugfs_init()
939 	drbd_debugfs_version = dentry;  in drbd_debugfs_init()
941 	dentry = debugfs_create_dir("resources", drbd_debugfs_root);  in drbd_debugfs_init()
942 	if (IS_ERR_OR_NULL(dentry))  in drbd_debugfs_init()
944 	drbd_debugfs_resources = dentry;  in drbd_debugfs_init()
946 	dentry = debugfs_create_dir("minors", drbd_debugfs_root);  in drbd_debugfs_init()
947 	if (IS_ERR_OR_NULL(dentry))  in drbd_debugfs_init()
949 	drbd_debugfs_minors = dentry;  in drbd_debugfs_init()
954 	if (dentry)  in drbd_debugfs_init()
955 		return PTR_ERR(dentry);  in drbd_debugfs_init()