37 static u64 get_features(struct btrfs_fs_info *fs_info,  in get_features()  argument
40 	struct btrfs_super_block *disk_super = fs_info->super_copy;  in get_features()
49 static void set_features(struct btrfs_fs_info *fs_info,  in set_features()  argument
52 	struct btrfs_super_block *disk_super = fs_info->super_copy;  in set_features()
96 	struct btrfs_fs_info *fs_info = to_fs_info(kobj);  in btrfs_feature_attr_show()  local
98 	if (fs_info) {  in btrfs_feature_attr_show()
99 		u64 features = get_features(fs_info, fa->feature_set);  in btrfs_feature_attr_show()
112 	struct btrfs_fs_info *fs_info;  in btrfs_feature_attr_store()  local
118 	fs_info = to_fs_info(kobj);  in btrfs_feature_attr_store()
119 	if (!fs_info)  in btrfs_feature_attr_store()
137 	features = get_features(fs_info, fa->feature_set);  in btrfs_feature_attr_store()
146 		btrfs_info(fs_info,  in btrfs_feature_attr_store()
152 	btrfs_info(fs_info, "%s %s feature flag",  in btrfs_feature_attr_store()
155 	spin_lock(&fs_info->super_lock);  in btrfs_feature_attr_store()
156 	features = get_features(fs_info, fa->feature_set);  in btrfs_feature_attr_store()
161 	set_features(fs_info, fa->feature_set, features);  in btrfs_feature_attr_store()
162 	spin_unlock(&fs_info->super_lock);  in btrfs_feature_attr_store()
167 	btrfs_set_pending(fs_info, COMMIT);  in btrfs_feature_attr_store()
168 	wake_up_process(fs_info->transaction_kthread);  in btrfs_feature_attr_store()
176 	struct btrfs_fs_info *fs_info = to_fs_info(kobj);  in btrfs_feature_visible()  local
179 	if (fs_info) {  in btrfs_feature_visible()
184 		features = get_features(fs_info, fa->feature_set);  in btrfs_feature_visible()
238 	struct btrfs_fs_info *fs_info = to_fs_info(kobj->parent);  in global_rsv_size_show()  local
239 	struct btrfs_block_rsv *block_rsv = &fs_info->global_block_rsv;  in global_rsv_size_show()
247 	struct btrfs_fs_info *fs_info = to_fs_info(kobj->parent);  in global_rsv_reserved_show()  local
248 	struct btrfs_block_rsv *block_rsv = &fs_info->global_block_rsv;  in global_rsv_reserved_show()
362 	struct btrfs_fs_info *fs_info = to_fs_info(kobj);  in btrfs_label_show()  local
363 	char *label = fs_info->super_copy->label;  in btrfs_label_show()
371 	struct btrfs_fs_info *fs_info = to_fs_info(kobj);  in btrfs_label_store()  local
374 	if (fs_info->sb->s_flags & MS_RDONLY)  in btrfs_label_store()
386 	spin_lock(&fs_info->super_lock);  in btrfs_label_store()
387 	memset(fs_info->super_copy->label, 0, BTRFS_LABEL_SIZE);  in btrfs_label_store()
388 	memcpy(fs_info->super_copy->label, buf, p_len);  in btrfs_label_store()
389 	spin_unlock(&fs_info->super_lock);  in btrfs_label_store()
394 	btrfs_set_pending(fs_info, COMMIT);  in btrfs_label_store()
395 	wake_up_process(fs_info->transaction_kthread);  in btrfs_label_store()
404 	struct btrfs_fs_info *fs_info = to_fs_info(kobj);  in btrfs_nodesize_show()  local
406 	return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->super_copy->nodesize);  in btrfs_nodesize_show()
414 	struct btrfs_fs_info *fs_info = to_fs_info(kobj);  in btrfs_sectorsize_show()  local
416 	return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->super_copy->sectorsize);  in btrfs_sectorsize_show()
424 	struct btrfs_fs_info *fs_info = to_fs_info(kobj);  in btrfs_clone_alignment_show()  local
426 	return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->super_copy->sectorsize);  in btrfs_clone_alignment_show()
441 	struct btrfs_fs_info *fs_info = to_fs_info(kobj);  in btrfs_release_super_kobj()  local
442 	complete(&fs_info->kobj_unregister);  in btrfs_release_super_kobj()
468 static int addrm_unknown_feature_attrs(struct btrfs_fs_info *fs_info, bool add)  in addrm_unknown_feature_attrs()  argument
479 		u64 features = get_features(fs_info, set);  in addrm_unknown_feature_attrs()
496 				ret = sysfs_merge_group(&fs_info->super_kobj,  in addrm_unknown_feature_attrs()
501 				sysfs_unmerge_group(&fs_info->super_kobj,  in addrm_unknown_feature_attrs()
509 static void __btrfs_sysfs_remove_one(struct btrfs_fs_info *fs_info)  in __btrfs_sysfs_remove_one()  argument
511 	kobject_del(&fs_info->super_kobj);  in __btrfs_sysfs_remove_one()
512 	kobject_put(&fs_info->super_kobj);  in __btrfs_sysfs_remove_one()
513 	wait_for_completion(&fs_info->kobj_unregister);  in __btrfs_sysfs_remove_one()
516 void btrfs_sysfs_remove_one(struct btrfs_fs_info *fs_info)  in btrfs_sysfs_remove_one()  argument
518 	if (fs_info->space_info_kobj) {  in btrfs_sysfs_remove_one()
519 		sysfs_remove_files(fs_info->space_info_kobj, allocation_attrs);  in btrfs_sysfs_remove_one()
520 		kobject_del(fs_info->space_info_kobj);  in btrfs_sysfs_remove_one()
521 		kobject_put(fs_info->space_info_kobj);  in btrfs_sysfs_remove_one()
523 	kobject_del(fs_info->device_dir_kobj);  in btrfs_sysfs_remove_one()
524 	kobject_put(fs_info->device_dir_kobj);  in btrfs_sysfs_remove_one()
525 	addrm_unknown_feature_attrs(fs_info, false);  in btrfs_sysfs_remove_one()
526 	sysfs_remove_group(&fs_info->super_kobj, &btrfs_feature_attr_group);  in btrfs_sysfs_remove_one()
527 	__btrfs_sysfs_remove_one(fs_info);  in btrfs_sysfs_remove_one()
605 int btrfs_kobj_rm_device(struct btrfs_fs_info *fs_info,  in btrfs_kobj_rm_device()  argument
611 	if (!fs_info->device_dir_kobj)  in btrfs_kobj_rm_device()
618 		sysfs_remove_link(fs_info->device_dir_kobj,  in btrfs_kobj_rm_device()
625 int btrfs_kobj_add_device(struct btrfs_fs_info *fs_info,  in btrfs_kobj_add_device()  argument
629 	struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;  in btrfs_kobj_add_device()
632 	if (!fs_info->device_dir_kobj)  in btrfs_kobj_add_device()
633 		fs_info->device_dir_kobj = kobject_create_and_add("devices",  in btrfs_kobj_add_device()
634 						&fs_info->super_kobj);  in btrfs_kobj_add_device()
636 	if (!fs_info->device_dir_kobj)  in btrfs_kobj_add_device()
652 		error = sysfs_create_link(fs_info->device_dir_kobj,  in btrfs_kobj_add_device()
670 int btrfs_sysfs_add_one(struct btrfs_fs_info *fs_info)  in btrfs_sysfs_add_one()  argument
674 	init_completion(&fs_info->kobj_unregister);  in btrfs_sysfs_add_one()
675 	fs_info->super_kobj.kset = btrfs_kset;  in btrfs_sysfs_add_one()
676 	error = kobject_init_and_add(&fs_info->super_kobj, &btrfs_ktype, NULL,  in btrfs_sysfs_add_one()
677 				     "%pU", fs_info->fsid);  in btrfs_sysfs_add_one()
681 	error = sysfs_create_group(&fs_info->super_kobj,  in btrfs_sysfs_add_one()
684 		__btrfs_sysfs_remove_one(fs_info);  in btrfs_sysfs_add_one()
688 	error = addrm_unknown_feature_attrs(fs_info, true);  in btrfs_sysfs_add_one()
692 	error = btrfs_kobj_add_device(fs_info, NULL);  in btrfs_sysfs_add_one()
696 	fs_info->space_info_kobj = kobject_create_and_add("allocation",  in btrfs_sysfs_add_one()
697 						  &fs_info->super_kobj);  in btrfs_sysfs_add_one()
698 	if (!fs_info->space_info_kobj) {  in btrfs_sysfs_add_one()
703 	error = sysfs_create_files(fs_info->space_info_kobj, allocation_attrs);  in btrfs_sysfs_add_one()
709 	btrfs_sysfs_remove_one(fs_info);  in btrfs_sysfs_add_one()