370 				struct bdi_writeback *old_wb,  in inode_do_switch_wbs()  argument
388 	trace_inode_switch_wbs(inode, old_wb, new_wb);  in inode_do_switch_wbs()
397 			dec_wb_stat(old_wb, WB_RECLAIMABLE);  in inode_do_switch_wbs()
405 		dec_wb_stat(old_wb, WB_WRITEBACK);  in inode_do_switch_wbs()
410 		atomic_dec(&old_wb->writeback_inodes);  in inode_do_switch_wbs()
466 	struct bdi_writeback *old_wb = isw->inodes[0]->i_wb;  in inode_switch_wbs_work_fn()  local
487 	if (old_wb < new_wb) {  in inode_switch_wbs_work_fn()
488 		spin_lock(&old_wb->list_lock);  in inode_switch_wbs_work_fn()
492 		spin_lock_nested(&old_wb->list_lock, SINGLE_DEPTH_NESTING);  in inode_switch_wbs_work_fn()
496 		WARN_ON_ONCE((*inodep)->i_wb != old_wb);  in inode_switch_wbs_work_fn()
497 		if (inode_do_switch_wbs(*inodep, old_wb, new_wb))  in inode_switch_wbs_work_fn()
502 	spin_unlock(&old_wb->list_lock);  in inode_switch_wbs_work_fn()
508 		wb_put_many(old_wb, nr_switched);  in inode_switch_wbs_work_fn()