170 				    struct extent_buffer *eb)  in tree_mod_dont_log()  argument
174 	if (eb && btrfs_header_level(eb) == 0)  in tree_mod_dont_log()
188 				    struct extent_buffer *eb)  in tree_mod_need_log()  argument
192 	if (eb && btrfs_header_level(eb) == 0)  in tree_mod_need_log()
198 static struct tree_mod_elem *alloc_tree_mod_elem(struct extent_buffer *eb,  in alloc_tree_mod_elem()  argument
209 	tm->logical = eb->start;  in alloc_tree_mod_elem()
211 		btrfs_node_key(eb, &tm->key, slot);  in alloc_tree_mod_elem()
212 		tm->blockptr = btrfs_node_blockptr(eb, slot);  in alloc_tree_mod_elem()
216 	tm->generation = btrfs_node_ptr_generation(eb, slot);  in alloc_tree_mod_elem()
222 int btrfs_tree_mod_log_insert_key(struct extent_buffer *eb, int slot,  in btrfs_tree_mod_log_insert_key()  argument
228 	if (!tree_mod_need_log(eb->fs_info, eb))  in btrfs_tree_mod_log_insert_key()
231 	tm = alloc_tree_mod_elem(eb, slot, op, flags);  in btrfs_tree_mod_log_insert_key()
235 	if (tree_mod_dont_log(eb->fs_info, eb)) {  in btrfs_tree_mod_log_insert_key()
240 	ret = tree_mod_log_insert(eb->fs_info, tm);  in btrfs_tree_mod_log_insert_key()
241 	write_unlock(&eb->fs_info->tree_mod_log_lock);  in btrfs_tree_mod_log_insert_key()
248 int btrfs_tree_mod_log_insert_move(struct extent_buffer *eb,  in btrfs_tree_mod_log_insert_move()  argument
258 	if (!tree_mod_need_log(eb->fs_info, eb))  in btrfs_tree_mod_log_insert_move()
271 	tm->logical = eb->start;  in btrfs_tree_mod_log_insert_move()
278 		tm_list[i] = alloc_tree_mod_elem(eb, i + dst_slot,  in btrfs_tree_mod_log_insert_move()
286 	if (tree_mod_dont_log(eb->fs_info, eb))  in btrfs_tree_mod_log_insert_move()
296 		ret = tree_mod_log_insert(eb->fs_info, tm_list[i]);  in btrfs_tree_mod_log_insert_move()
301 	ret = tree_mod_log_insert(eb->fs_info, tm);  in btrfs_tree_mod_log_insert_move()
304 	write_unlock(&eb->fs_info->tree_mod_log_lock);  in btrfs_tree_mod_log_insert_move()
312 			rb_erase(&tm_list[i]->node, &eb->fs_info->tree_mod_log);  in btrfs_tree_mod_log_insert_move()
316 		write_unlock(&eb->fs_info->tree_mod_log_lock);  in btrfs_tree_mod_log_insert_move()
550 int btrfs_tree_mod_log_free_eb(struct extent_buffer *eb)  in btrfs_tree_mod_log_free_eb()  argument
557 	if (!tree_mod_need_log(eb->fs_info, eb))  in btrfs_tree_mod_log_free_eb()
560 	nritems = btrfs_header_nritems(eb);  in btrfs_tree_mod_log_free_eb()
566 		tm_list[i] = alloc_tree_mod_elem(eb, i,  in btrfs_tree_mod_log_free_eb()
574 	if (tree_mod_dont_log(eb->fs_info, eb))  in btrfs_tree_mod_log_free_eb()
577 	ret = tree_mod_log_free_eb(eb->fs_info, tm_list, nritems);  in btrfs_tree_mod_log_free_eb()
578 	write_unlock(&eb->fs_info->tree_mod_log_lock);  in btrfs_tree_mod_log_free_eb()
654 				struct extent_buffer *eb,  in tree_mod_log_rewind()  argument
665 	n = btrfs_header_nritems(eb);  in tree_mod_log_rewind()
679 			btrfs_set_node_key(eb, &tm->key, tm->slot);  in tree_mod_log_rewind()
680 			btrfs_set_node_blockptr(eb, tm->slot, tm->blockptr);  in tree_mod_log_rewind()
681 			btrfs_set_node_ptr_generation(eb, tm->slot,  in tree_mod_log_rewind()
687 			btrfs_set_node_key(eb, &tm->key, tm->slot);  in tree_mod_log_rewind()
688 			btrfs_set_node_blockptr(eb, tm->slot, tm->blockptr);  in tree_mod_log_rewind()
689 			btrfs_set_node_ptr_generation(eb, tm->slot,  in tree_mod_log_rewind()
699 			memmove_extent_buffer(eb, o_dst, o_src,  in tree_mod_log_rewind()
722 	btrfs_set_header_nritems(eb, n);  in tree_mod_log_rewind()
734 						struct extent_buffer *eb,  in btrfs_tree_mod_log_rewind()  argument
741 		return eb;  in btrfs_tree_mod_log_rewind()
743 	if (btrfs_header_level(eb) == 0)  in btrfs_tree_mod_log_rewind()
744 		return eb;  in btrfs_tree_mod_log_rewind()
746 	tm = tree_mod_log_search(fs_info, eb->start, time_seq);  in btrfs_tree_mod_log_rewind()
748 		return eb;  in btrfs_tree_mod_log_rewind()
752 		eb_rewin = alloc_dummy_extent_buffer(fs_info, eb->start);  in btrfs_tree_mod_log_rewind()
754 			btrfs_tree_read_unlock(eb);  in btrfs_tree_mod_log_rewind()
755 			free_extent_buffer(eb);  in btrfs_tree_mod_log_rewind()
758 		btrfs_set_header_bytenr(eb_rewin, eb->start);  in btrfs_tree_mod_log_rewind()
760 					     btrfs_header_backref_rev(eb));  in btrfs_tree_mod_log_rewind()
761 		btrfs_set_header_owner(eb_rewin, btrfs_header_owner(eb));  in btrfs_tree_mod_log_rewind()
762 		btrfs_set_header_level(eb_rewin, btrfs_header_level(eb));  in btrfs_tree_mod_log_rewind()
764 		eb_rewin = btrfs_clone_extent_buffer(eb);  in btrfs_tree_mod_log_rewind()
766 			btrfs_tree_read_unlock(eb);  in btrfs_tree_mod_log_rewind()
767 			free_extent_buffer(eb);  in btrfs_tree_mod_log_rewind()
772 	btrfs_tree_read_unlock(eb);  in btrfs_tree_mod_log_rewind()
773 	free_extent_buffer(eb);  in btrfs_tree_mod_log_rewind()
796 	struct extent_buffer *eb = NULL;  in btrfs_get_old_root()  local
836 			eb = btrfs_clone_extent_buffer(old);  in btrfs_get_old_root()
853 				free_extent_buffer(eb);  in btrfs_get_old_root()
862 		eb = alloc_dummy_extent_buffer(fs_info, logical);  in btrfs_get_old_root()
864 		eb = btrfs_clone_extent_buffer(eb_root);  in btrfs_get_old_root()
869 	if (!eb)  in btrfs_get_old_root()
872 		btrfs_set_header_bytenr(eb, eb->start);  in btrfs_get_old_root()
873 		btrfs_set_header_backref_rev(eb, BTRFS_MIXED_BACKREF_REV);  in btrfs_get_old_root()
874 		btrfs_set_header_owner(eb, eb_root_owner);  in btrfs_get_old_root()
875 		btrfs_set_header_level(eb, old_root->level);  in btrfs_get_old_root()
876 		btrfs_set_header_generation(eb, old_generation);  in btrfs_get_old_root()
878 	btrfs_set_buffer_lockdep_class(btrfs_header_owner(eb), eb,  in btrfs_get_old_root()
879 				       btrfs_header_level(eb));  in btrfs_get_old_root()
880 	btrfs_tree_read_lock(eb);  in btrfs_get_old_root()
882 		tree_mod_log_rewind(fs_info, eb, time_seq, tm);  in btrfs_get_old_root()
884 		WARN_ON(btrfs_header_level(eb) != 0);  in btrfs_get_old_root()
885 	WARN_ON(btrfs_header_nritems(eb) > BTRFS_NODEPTRS_PER_BLOCK(fs_info));  in btrfs_get_old_root()
887 	return eb;  in btrfs_get_old_root()