472 	struct nilfs_shadow_map *shadow = mdi->mi_shadow;  in nilfs_mdt_clear()  local
477 	if (shadow) {  in nilfs_mdt_clear()
478 		struct inode *s_inode = shadow->inode;  in nilfs_mdt_clear()
480 		shadow->inode = NULL;  in nilfs_mdt_clear()
509  * nilfs_mdt_setup_shadow_map - setup shadow map and bind it to metadata file
511  * @shadow: shadow mapping
514 			       struct nilfs_shadow_map *shadow)  in nilfs_mdt_setup_shadow_map()  argument
519 	INIT_LIST_HEAD(&shadow->frozen_buffers);  in nilfs_mdt_setup_shadow_map()
525 	shadow->inode = s_inode;  in nilfs_mdt_setup_shadow_map()
526 	mi->mi_shadow = shadow;  in nilfs_mdt_setup_shadow_map()
531  * nilfs_mdt_save_to_shadow_map - copy bmap and dirty pages to shadow map
538 	struct nilfs_shadow_map *shadow = mi->mi_shadow;  in nilfs_mdt_save_to_shadow_map()  local
539 	struct inode *s_inode = shadow->inode;  in nilfs_mdt_save_to_shadow_map()
551 	nilfs_bmap_save(ii->i_bmap, &shadow->bmap_store);  in nilfs_mdt_save_to_shadow_map()
558 	struct nilfs_shadow_map *shadow = NILFS_MDT(inode)->mi_shadow;  in nilfs_mdt_freeze_buffer()  local
563 	page = grab_cache_page(shadow->inode->i_mapping, bh->b_page->index);  in nilfs_mdt_freeze_buffer()
576 			      &shadow->frozen_buffers);  in nilfs_mdt_freeze_buffer()
590 	struct nilfs_shadow_map *shadow = NILFS_MDT(inode)->mi_shadow;  in nilfs_mdt_get_frozen_buffer()  local
595 	page = find_lock_page(shadow->inode->i_mapping, bh->b_page->index);  in nilfs_mdt_get_frozen_buffer()
607 static void nilfs_release_frozen_buffers(struct nilfs_shadow_map *shadow)  in nilfs_release_frozen_buffers()  argument
609 	struct list_head *head = &shadow->frozen_buffers;  in nilfs_release_frozen_buffers()
628 	struct nilfs_shadow_map *shadow = mi->mi_shadow;  in nilfs_mdt_restore_from_shadow_map()  local
636 	nilfs_copy_back_pages(inode->i_mapping, shadow->inode->i_mapping);  in nilfs_mdt_restore_from_shadow_map()
640 			      NILFS_I(shadow->inode)->i_assoc_inode->i_mapping);  in nilfs_mdt_restore_from_shadow_map()
642 	nilfs_bmap_restore(ii->i_bmap, &shadow->bmap_store);  in nilfs_mdt_restore_from_shadow_map()
648  * nilfs_mdt_clear_shadow_map - truncate pages in shadow map caches
654 	struct nilfs_shadow_map *shadow = mi->mi_shadow;  in nilfs_mdt_clear_shadow_map()  local
655 	struct inode *shadow_btnc_inode = NILFS_I(shadow->inode)->i_assoc_inode;  in nilfs_mdt_clear_shadow_map()
658 	nilfs_release_frozen_buffers(shadow);  in nilfs_mdt_clear_shadow_map()
659 	truncate_inode_pages(shadow->inode->i_mapping, 0);  in nilfs_mdt_clear_shadow_map()