491 	struct inode_switch_wbs_context *isw =  in inode_switch_wbs_work_fn()  local
493 	struct backing_dev_info *bdi = inode_to_bdi(isw->inodes[0]);  in inode_switch_wbs_work_fn()
494 	struct bdi_writeback *old_wb = isw->inodes[0]->i_wb;  in inode_switch_wbs_work_fn()
495 	struct bdi_writeback *new_wb = isw->new_wb;  in inode_switch_wbs_work_fn()
523 	for (inodep = isw->inodes; *inodep; inodep++) {  in inode_switch_wbs_work_fn()
539 	for (inodep = isw->inodes; *inodep; inodep++)  in inode_switch_wbs_work_fn()
542 	kfree(isw);  in inode_switch_wbs_work_fn()
587 	struct inode_switch_wbs_context *isw;  in inode_switch_wbs()  local
597 	isw = kzalloc(struct_size(isw, inodes, 2), GFP_ATOMIC);  in inode_switch_wbs()
598 	if (!isw)  in inode_switch_wbs()
612 	isw->new_wb = wb_get_create(bdi, memcg_css, GFP_ATOMIC);  in inode_switch_wbs()
614 	if (!isw->new_wb)  in inode_switch_wbs()
617 	if (!inode_prepare_wbs_switch(inode, isw->new_wb))  in inode_switch_wbs()
620 	isw->inodes[0] = inode;  in inode_switch_wbs()
628 	INIT_RCU_WORK(&isw->work, inode_switch_wbs_work_fn);  in inode_switch_wbs()
629 	queue_rcu_work(isw_wq, &isw->work);  in inode_switch_wbs()
634 	if (isw->new_wb)  in inode_switch_wbs()
635 		wb_put(isw->new_wb);  in inode_switch_wbs()
636 	kfree(isw);  in inode_switch_wbs()
639 static bool isw_prepare_wbs_switch(struct inode_switch_wbs_context *isw,  in isw_prepare_wbs_switch()  argument
645 		if (!inode_prepare_wbs_switch(inode, isw->new_wb))  in isw_prepare_wbs_switch()
648 		isw->inodes[*nr] = inode;  in isw_prepare_wbs_switch()
668 	struct inode_switch_wbs_context *isw;  in cleanup_offline_cgwb()  local
672 	isw = kzalloc(struct_size(isw, inodes, WB_MAX_INODES_PER_ISW),  in cleanup_offline_cgwb()
674 	if (!isw)  in cleanup_offline_cgwb()
681 		isw->new_wb = wb_get_create(wb->bdi, memcg_css, GFP_KERNEL);  in cleanup_offline_cgwb()
682 		if (isw->new_wb)  in cleanup_offline_cgwb()
685 	if (unlikely(!isw->new_wb))  in cleanup_offline_cgwb()
686 		isw->new_wb = &wb->bdi->wb; /* wb_get() is noop for bdi's wb */  in cleanup_offline_cgwb()
698 	restart = isw_prepare_wbs_switch(isw, &wb->b_attached, &nr);  in cleanup_offline_cgwb()
700 		restart = isw_prepare_wbs_switch(isw, &wb->b_dirty_time, &nr);  in cleanup_offline_cgwb()
706 		wb_put(isw->new_wb);  in cleanup_offline_cgwb()
707 		kfree(isw);  in cleanup_offline_cgwb()
717 	INIT_RCU_WORK(&isw->work, inode_switch_wbs_work_fn);  in cleanup_offline_cgwb()
718 	queue_rcu_work(isw_wq, &isw->work);  in cleanup_offline_cgwb()