38 static u64 get_features(struct btrfs_fs_info *fs_info,  in get_features()  argument
41 	struct btrfs_super_block *disk_super = fs_info->super_copy;  in get_features()
50 static void set_features(struct btrfs_fs_info *fs_info,  in set_features()  argument
53 	struct btrfs_super_block *disk_super = fs_info->super_copy;  in set_features()
97 	struct btrfs_fs_info *fs_info = to_fs_info(kobj);  in btrfs_feature_attr_show()  local
99 	if (fs_info) {  in btrfs_feature_attr_show()
100 		u64 features = get_features(fs_info, fa->feature_set);  in btrfs_feature_attr_show()
113 	struct btrfs_fs_info *fs_info;  in btrfs_feature_attr_store()  local
119 	fs_info = to_fs_info(kobj);  in btrfs_feature_attr_store()
120 	if (!fs_info)  in btrfs_feature_attr_store()
138 	features = get_features(fs_info, fa->feature_set);  in btrfs_feature_attr_store()
147 		btrfs_info(fs_info,  in btrfs_feature_attr_store()
153 	btrfs_info(fs_info, "%s %s feature flag",  in btrfs_feature_attr_store()
156 	spin_lock(&fs_info->super_lock);  in btrfs_feature_attr_store()
157 	features = get_features(fs_info, fa->feature_set);  in btrfs_feature_attr_store()
162 	set_features(fs_info, fa->feature_set, features);  in btrfs_feature_attr_store()
163 	spin_unlock(&fs_info->super_lock);  in btrfs_feature_attr_store()
168 	btrfs_set_pending(fs_info, COMMIT);  in btrfs_feature_attr_store()
169 	wake_up_process(fs_info->transaction_kthread);  in btrfs_feature_attr_store()
177 	struct btrfs_fs_info *fs_info = to_fs_info(kobj);  in btrfs_feature_visible()  local
180 	if (fs_info) {  in btrfs_feature_visible()
185 		features = get_features(fs_info, fa->feature_set);  in btrfs_feature_visible()
239 	struct btrfs_fs_info *fs_info = to_fs_info(kobj->parent);  in global_rsv_size_show()  local
240 	struct btrfs_block_rsv *block_rsv = &fs_info->global_block_rsv;  in global_rsv_size_show()
248 	struct btrfs_fs_info *fs_info = to_fs_info(kobj->parent);  in global_rsv_reserved_show()  local
249 	struct btrfs_block_rsv *block_rsv = &fs_info->global_block_rsv;  in global_rsv_reserved_show()
363 	struct btrfs_fs_info *fs_info = to_fs_info(kobj);  in btrfs_label_show()  local
364 	char *label = fs_info->super_copy->label;  in btrfs_label_show()
372 	struct btrfs_fs_info *fs_info = to_fs_info(kobj);  in btrfs_label_store()  local
375 	if (fs_info->sb->s_flags & MS_RDONLY)  in btrfs_label_store()
387 	spin_lock(&fs_info->super_lock);  in btrfs_label_store()
388 	memset(fs_info->super_copy->label, 0, BTRFS_LABEL_SIZE);  in btrfs_label_store()
389 	memcpy(fs_info->super_copy->label, buf, p_len);  in btrfs_label_store()
390 	spin_unlock(&fs_info->super_lock);  in btrfs_label_store()
395 	btrfs_set_pending(fs_info, COMMIT);  in btrfs_label_store()
396 	wake_up_process(fs_info->transaction_kthread);  in btrfs_label_store()
405 	struct btrfs_fs_info *fs_info = to_fs_info(kobj);  in btrfs_nodesize_show()  local
407 	return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->super_copy->nodesize);  in btrfs_nodesize_show()
415 	struct btrfs_fs_info *fs_info = to_fs_info(kobj);  in btrfs_sectorsize_show()  local
417 	return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->super_copy->sectorsize);  in btrfs_sectorsize_show()
425 	struct btrfs_fs_info *fs_info = to_fs_info(kobj);  in btrfs_clone_alignment_show()  local
427 	return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->super_copy->sectorsize);  in btrfs_clone_alignment_show()
464 	return to_fs_devs(kobj)->fs_info;  in to_fs_info()
477 static int addrm_unknown_feature_attrs(struct btrfs_fs_info *fs_info, bool add)  in addrm_unknown_feature_attrs()  argument
488 		u64 features = get_features(fs_info, set);  in addrm_unknown_feature_attrs()
505 				ret = sysfs_merge_group(&fs_info->fs_devices->fsid_kobj,  in addrm_unknown_feature_attrs()
510 				sysfs_unmerge_group(&fs_info->fs_devices->fsid_kobj,  in addrm_unknown_feature_attrs()
548 void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info)  in btrfs_sysfs_remove_mounted()  argument
550 	btrfs_reset_fs_info_ptr(fs_info);  in btrfs_sysfs_remove_mounted()
552 	if (fs_info->space_info_kobj) {  in btrfs_sysfs_remove_mounted()
553 		sysfs_remove_files(fs_info->space_info_kobj, allocation_attrs);  in btrfs_sysfs_remove_mounted()
554 		kobject_del(fs_info->space_info_kobj);  in btrfs_sysfs_remove_mounted()
555 		kobject_put(fs_info->space_info_kobj);  in btrfs_sysfs_remove_mounted()
557 	addrm_unknown_feature_attrs(fs_info, false);  in btrfs_sysfs_remove_mounted()
558 	sysfs_remove_group(&fs_info->fs_devices->fsid_kobj, &btrfs_feature_attr_group);  in btrfs_sysfs_remove_mounted()
559 	sysfs_remove_files(&fs_info->fs_devices->fsid_kobj, btrfs_attrs);  in btrfs_sysfs_remove_mounted()
560 	btrfs_sysfs_rm_device_link(fs_info->fs_devices, NULL);  in btrfs_sysfs_remove_mounted()
739 int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info)  in btrfs_sysfs_add_mounted()  argument
742 	struct btrfs_fs_devices *fs_devs = fs_info->fs_devices;  in btrfs_sysfs_add_mounted()
745 	btrfs_set_fs_info_ptr(fs_info);  in btrfs_sysfs_add_mounted()
762 	error = addrm_unknown_feature_attrs(fs_info, true);  in btrfs_sysfs_add_mounted()
766 	fs_info->space_info_kobj = kobject_create_and_add("allocation",  in btrfs_sysfs_add_mounted()
768 	if (!fs_info->space_info_kobj) {  in btrfs_sysfs_add_mounted()
773 	error = sysfs_create_files(fs_info->space_info_kobj, allocation_attrs);  in btrfs_sysfs_add_mounted()
779 	btrfs_sysfs_remove_mounted(fs_info);  in btrfs_sysfs_add_mounted()