38 struct file_system_type *get_filesystem(struct file_system_type *fs)  in get_filesystem()  argument
40 	__module_get(fs->owner);  in get_filesystem()
41 	return fs;  in get_filesystem()
44 void put_filesystem(struct file_system_type *fs)  in put_filesystem()  argument
46 	module_put(fs->owner);  in put_filesystem()
72 int register_filesystem(struct file_system_type * fs)  in register_filesystem()  argument
77 	if (fs->parameters && !fs_validate_description(fs->parameters))  in register_filesystem()
80 	BUG_ON(strchr(fs->name, '.'));  in register_filesystem()
81 	if (fs->next)  in register_filesystem()
84 	p = find_filesystem(fs->name, strlen(fs->name));  in register_filesystem()
88 		*p = fs;  in register_filesystem()
107 int unregister_filesystem(struct file_system_type * fs)  in unregister_filesystem()  argument
114 		if (fs == *tmp) {  in unregister_filesystem()
115 			*tmp = fs->next;  in unregister_filesystem()
116 			fs->next = NULL;  in unregister_filesystem()
255 	struct file_system_type *fs;  in __get_fs_type()  local
258 	fs = *(find_filesystem(name, len));  in __get_fs_type()
259 	if (fs && !try_module_get(fs->owner))  in __get_fs_type()
260 		fs = NULL;  in __get_fs_type()
262 	return fs;  in __get_fs_type()
267 	struct file_system_type *fs;  in get_fs_type()  local
271 	fs = __get_fs_type(name, len);  in get_fs_type()
272 	if (!fs && (request_module("fs-%.*s", len, name) == 0)) {  in get_fs_type()
273 		fs = __get_fs_type(name, len);  in get_fs_type()
274 		WARN_ONCE(!fs, "request_module fs-%.*s succeeded, but still no fs?\n", len, name);  in get_fs_type()
277 	if (dot && fs && !(fs->fs_flags & FS_HAS_SUBTYPE)) {  in get_fs_type()
278 		put_filesystem(fs);  in get_fs_type()
279 		fs = NULL;  in get_fs_type()
281 	return fs;  in get_fs_type()