45 	struct dentry			*d_parent;
46 	struct dentry			*dentry;  member
69 static struct dentry *eventfs_root_lookup(struct inode *dir,
70 					  struct dentry *dentry,
107 static struct dentry *create_file(const char *name, umode_t mode,  in create_file()
108 				  struct dentry *parent, void *data,  in create_file()
112 	struct dentry *dentry;  in create_file()  local
121 	dentry = eventfs_start_creating(name, parent);  in create_file()
123 	if (IS_ERR(dentry))  in create_file()
124 		return dentry;  in create_file()
126 	inode = tracefs_get_inode(dentry->d_sb);  in create_file()
128 		return eventfs_failed_creating(dentry);  in create_file()
136 	d_instantiate(dentry, inode);  in create_file()
137 	fsnotify_create(dentry->d_parent->d_inode, dentry);  in create_file()
138 	return eventfs_end_creating(dentry);  in create_file()
158 static struct dentry *create_dir(const char *name, struct dentry *parent, void *data)  in create_dir()
161 	struct dentry *dentry;  in create_dir()  local
164 	dentry = eventfs_start_creating(name, parent);  in create_dir()
165 	if (IS_ERR(dentry))  in create_dir()
166 		return dentry;  in create_dir()
168 	inode = tracefs_get_inode(dentry->d_sb);  in create_dir()
170 		return eventfs_failed_creating(dentry);  in create_dir()
181 	d_instantiate(dentry, inode);  in create_dir()
182 	inc_nlink(dentry->d_parent->d_inode);  in create_dir()
183 	fsnotify_mkdir(dentry->d_parent->d_inode, dentry);  in create_dir()
184 	return eventfs_end_creating(dentry);  in create_dir()
195 void eventfs_set_ef_status_free(struct tracefs_inode *ti, struct dentry *dentry)  in eventfs_set_ef_status_free()  argument
232 	ti_parent = get_tracefs(dentry->d_parent->d_inode);  in eventfs_set_ef_status_free()
236 	ef = dentry->d_fsdata;  in eventfs_set_ef_status_free()
248 	dentry->d_fsdata = NULL;  in eventfs_set_ef_status_free()
249 	ef->dentry = NULL;  in eventfs_set_ef_status_free()
269 		ef_child->d_parent = ef->dentry;  in eventfs_post_create_dir()
272 	ti = get_tracefs(ef->dentry->d_inode);  in eventfs_post_create_dir()
284 static struct dentry *
285 create_dentry(struct eventfs_file *ef, struct dentry *parent, bool lookup)  in create_dentry()
288 	struct dentry *dentry;  in create_dentry()  local
295 	if (ef->dentry) {  in create_dentry()
296 		dentry = ef->dentry;  in create_dentry()
299 			dget(dentry);  in create_dentry()
301 		return dentry;  in create_dentry()
309 		dentry = create_dir(ef->name, parent, ef->data);  in create_dentry()
311 		dentry = create_file(ef->name, ef->mode, parent,  in create_dentry()
318 	if (IS_ERR_OR_NULL(dentry)) {  in create_dentry()
320 		dentry = ef->dentry;  in create_dentry()
321 		if (dentry && !lookup)  in create_dentry()
322 			dget(dentry);  in create_dentry()
324 		return dentry;  in create_dentry()
327 	if (!ef->dentry && !ef->is_freed) {  in create_dentry()
328 		ef->dentry = dentry;  in create_dentry()
331 		dentry->d_fsdata = ef;  in create_dentry()
344 		d_invalidate(dentry);  in create_dentry()
347 		dput(dentry);  in create_dentry()
349 	return invalidate ? NULL : dentry;  in create_dentry()
372 static struct dentry *eventfs_root_lookup(struct inode *dir,  in eventfs_root_lookup()
373 					  struct dentry *dentry,  in eventfs_root_lookup()  argument
379 	struct dentry *ret = NULL;  in eventfs_root_lookup()
390 		if (!match_event_file(ef, dentry->d_name.name))  in eventfs_root_lookup()
392 		ret = simple_lookup(dir, dentry, flags);  in eventfs_root_lookup()
402 	struct dentry		**dentries;
451 	struct dentry **dentries = NULL;  in dcache_dir_open_wrapper()
452 	struct dentry *dentry = file_dentry(file);  in dcache_dir_open_wrapper()  local
453 	struct dentry *d;  in dcache_dir_open_wrapper()
474 		d = create_dentry(ef, dentry, false);  in dcache_dir_open_wrapper()
476 			struct dentry **tmp;  in dcache_dir_open_wrapper()
572 struct dentry *eventfs_create_events_dir(const char *name,  in eventfs_create_events_dir()
573 					 struct dentry *parent)  in eventfs_create_events_dir()
575 	struct dentry *dentry = tracefs_start_creating(name, parent);  in eventfs_create_events_dir()  local
583 	if (IS_ERR(dentry))  in eventfs_create_events_dir()
584 		return dentry;  in eventfs_create_events_dir()
589 	inode = tracefs_get_inode(dentry->d_sb);  in eventfs_create_events_dir()
592 		tracefs_failed_creating(dentry);  in eventfs_create_events_dir()
608 	d_instantiate(dentry, inode);  in eventfs_create_events_dir()
609 	inc_nlink(dentry->d_parent->d_inode);  in eventfs_create_events_dir()
610 	fsnotify_mkdir(dentry->d_parent->d_inode, dentry);  in eventfs_create_events_dir()
611 	return tracefs_end_creating(dentry);  in eventfs_create_events_dir()
624 					       struct dentry *parent)  in eventfs_add_subsystem_dir()
676 	ef->d_parent = ef_parent->dentry;  in eventfs_add_dir()
697 			 struct dentry *parent, void *data,  in eventfs_add_events_file()
770 	ef->d_parent = ef_parent->dentry;  in eventfs_add_file()
831 	struct dentry *dentry_list = NULL;  in eventfs_remove()
832 	struct dentry *dentry;  in eventfs_remove()  local
840 		if (ef->dentry) {  in eventfs_remove()
844 			dget(ef->dentry);  in eventfs_remove()
860 			ef->dentry->d_fsdata = (void *)(ptr | 1);  in eventfs_remove()
861 			dentry_list = ef->dentry;  in eventfs_remove()
862 			ef->dentry = NULL;  in eventfs_remove()
871 		dentry = dentry_list;  in eventfs_remove()
872 		ptr = (unsigned long)dentry->d_fsdata & ~1UL;  in eventfs_remove()
873 		dentry_list = (struct dentry *)ptr;  in eventfs_remove()
874 		dentry->d_fsdata = NULL;  in eventfs_remove()
875 		d_invalidate(dentry);  in eventfs_remove()
878 		WARN_ONCE((int)d_count(dentry) < 1,  in eventfs_remove()
880 			  dentry, d_count(dentry));  in eventfs_remove()
882 		dput(dentry);  in eventfs_remove()
892 void eventfs_remove_events_dir(struct dentry *dentry)  in eventfs_remove_events_dir()  argument
896 	if (!dentry || !dentry->d_inode)  in eventfs_remove_events_dir()
899 	ti = get_tracefs(dentry->d_inode);  in eventfs_remove_events_dir()
903 	d_invalidate(dentry);  in eventfs_remove_events_dir()
904 	dput(dentry);  in eventfs_remove_events_dir()