174 				    struct extent_buffer *eb)  in tree_mod_dont_log()  argument
178 	if (eb && btrfs_header_level(eb) == 0)  in tree_mod_dont_log()
192 				    struct extent_buffer *eb)  in tree_mod_need_log()  argument
196 	if (eb && btrfs_header_level(eb) == 0)  in tree_mod_need_log()
202 static struct tree_mod_elem *alloc_tree_mod_elem(struct extent_buffer *eb,  in alloc_tree_mod_elem()  argument
212 	tm->logical = eb->start;  in alloc_tree_mod_elem()
214 		btrfs_node_key(eb, &tm->key, slot);  in alloc_tree_mod_elem()
215 		tm->blockptr = btrfs_node_blockptr(eb, slot);  in alloc_tree_mod_elem()
219 	tm->generation = btrfs_node_ptr_generation(eb, slot);  in alloc_tree_mod_elem()
225 int btrfs_tree_mod_log_insert_key(struct extent_buffer *eb, int slot,  in btrfs_tree_mod_log_insert_key()  argument
231 	if (!tree_mod_need_log(eb->fs_info, eb))  in btrfs_tree_mod_log_insert_key()
234 	tm = alloc_tree_mod_elem(eb, slot, op);  in btrfs_tree_mod_log_insert_key()
238 	if (tree_mod_dont_log(eb->fs_info, eb)) {  in btrfs_tree_mod_log_insert_key()
253 	ret = tree_mod_log_insert(eb->fs_info, tm);  in btrfs_tree_mod_log_insert_key()
255 	write_unlock(&eb->fs_info->tree_mod_log_lock);  in btrfs_tree_mod_log_insert_key()
262 static struct tree_mod_elem *tree_mod_log_alloc_move(struct extent_buffer *eb,  in tree_mod_log_alloc_move()  argument
272 	tm->logical = eb->start;  in tree_mod_log_alloc_move()
282 int btrfs_tree_mod_log_insert_move(struct extent_buffer *eb,  in btrfs_tree_mod_log_insert_move()  argument
292 	if (!tree_mod_need_log(eb->fs_info, eb))  in btrfs_tree_mod_log_insert_move()
301 	tm = tree_mod_log_alloc_move(eb, dst_slot, src_slot, nr_items);  in btrfs_tree_mod_log_insert_move()
309 		tm_list[i] = alloc_tree_mod_elem(eb, i + dst_slot,  in btrfs_tree_mod_log_insert_move()
318 	if (tree_mod_dont_log(eb->fs_info, eb)) {  in btrfs_tree_mod_log_insert_move()
341 		ret = tree_mod_log_insert(eb->fs_info, tm_list[i]);  in btrfs_tree_mod_log_insert_move()
346 	ret = tree_mod_log_insert(eb->fs_info, tm);  in btrfs_tree_mod_log_insert_move()
349 	write_unlock(&eb->fs_info->tree_mod_log_lock);  in btrfs_tree_mod_log_insert_move()
358 				rb_erase(&tm_list[i]->node, &eb->fs_info->tree_mod_log);  in btrfs_tree_mod_log_insert_move()
363 		write_unlock(&eb->fs_info->tree_mod_log_lock);  in btrfs_tree_mod_log_insert_move()
670 int btrfs_tree_mod_log_free_eb(struct extent_buffer *eb)  in btrfs_tree_mod_log_free_eb()  argument
677 	if (!tree_mod_need_log(eb->fs_info, eb))  in btrfs_tree_mod_log_free_eb()
680 	nritems = btrfs_header_nritems(eb);  in btrfs_tree_mod_log_free_eb()
688 		tm_list[i] = alloc_tree_mod_elem(eb, i,  in btrfs_tree_mod_log_free_eb()
697 	if (tree_mod_dont_log(eb->fs_info, eb)) {  in btrfs_tree_mod_log_free_eb()
712 	ret = tree_mod_log_free_eb(eb->fs_info, tm_list, nritems);  in btrfs_tree_mod_log_free_eb()
714 	write_unlock(&eb->fs_info->tree_mod_log_lock);  in btrfs_tree_mod_log_free_eb()
792 				struct extent_buffer *eb,  in tree_mod_log_rewind()  argument
818 	n = btrfs_header_nritems(eb);  in tree_mod_log_rewind()
834 			btrfs_set_node_key(eb, &tm->key, tm->slot);  in tree_mod_log_rewind()
835 			btrfs_set_node_blockptr(eb, tm->slot, tm->blockptr);  in tree_mod_log_rewind()
836 			btrfs_set_node_ptr_generation(eb, tm->slot,  in tree_mod_log_rewind()
844 			btrfs_set_node_key(eb, &tm->key, tm->slot);  in tree_mod_log_rewind()
845 			btrfs_set_node_blockptr(eb, tm->slot, tm->blockptr);  in tree_mod_log_rewind()
846 			btrfs_set_node_ptr_generation(eb, tm->slot,  in tree_mod_log_rewind()
868 			o_dst = btrfs_node_key_ptr_offset(eb, tm->slot);  in tree_mod_log_rewind()
869 			o_src = btrfs_node_key_ptr_offset(eb, tm->move.dst_slot);  in tree_mod_log_rewind()
874 					   eb->start, tm->slot,  in tree_mod_log_rewind()
878 			memmove_extent_buffer(eb, o_dst, o_src,  in tree_mod_log_rewind()
902 	btrfs_set_header_nritems(eb, n);  in tree_mod_log_rewind()
914 						struct extent_buffer *eb,  in btrfs_tree_mod_log_rewind()  argument
921 		return eb;  in btrfs_tree_mod_log_rewind()
923 	if (btrfs_header_level(eb) == 0)  in btrfs_tree_mod_log_rewind()
924 		return eb;  in btrfs_tree_mod_log_rewind()
926 	tm = tree_mod_log_search(fs_info, eb->start, time_seq);  in btrfs_tree_mod_log_rewind()
928 		return eb;  in btrfs_tree_mod_log_rewind()
932 		eb_rewin = alloc_dummy_extent_buffer(fs_info, eb->start);  in btrfs_tree_mod_log_rewind()
934 			btrfs_tree_read_unlock(eb);  in btrfs_tree_mod_log_rewind()
935 			free_extent_buffer(eb);  in btrfs_tree_mod_log_rewind()
938 		btrfs_set_header_bytenr(eb_rewin, eb->start);  in btrfs_tree_mod_log_rewind()
940 					     btrfs_header_backref_rev(eb));  in btrfs_tree_mod_log_rewind()
941 		btrfs_set_header_owner(eb_rewin, btrfs_header_owner(eb));  in btrfs_tree_mod_log_rewind()
942 		btrfs_set_header_level(eb_rewin, btrfs_header_level(eb));  in btrfs_tree_mod_log_rewind()
944 		eb_rewin = btrfs_clone_extent_buffer(eb);  in btrfs_tree_mod_log_rewind()
946 			btrfs_tree_read_unlock(eb);  in btrfs_tree_mod_log_rewind()
947 			free_extent_buffer(eb);  in btrfs_tree_mod_log_rewind()
952 	btrfs_tree_read_unlock(eb);  in btrfs_tree_mod_log_rewind()
953 	free_extent_buffer(eb);  in btrfs_tree_mod_log_rewind()
976 	struct extent_buffer *eb = NULL;  in btrfs_get_old_root()  local
1021 			eb = btrfs_clone_extent_buffer(old);  in btrfs_get_old_root()
1038 				free_extent_buffer(eb);  in btrfs_get_old_root()
1047 		eb = alloc_dummy_extent_buffer(fs_info, logical);  in btrfs_get_old_root()
1049 		eb = btrfs_clone_extent_buffer(eb_root);  in btrfs_get_old_root()
1054 	if (!eb)  in btrfs_get_old_root()
1057 		btrfs_set_header_bytenr(eb, eb->start);  in btrfs_get_old_root()
1058 		btrfs_set_header_backref_rev(eb, BTRFS_MIXED_BACKREF_REV);  in btrfs_get_old_root()
1059 		btrfs_set_header_owner(eb, eb_root_owner);  in btrfs_get_old_root()
1060 		btrfs_set_header_level(eb, old_root->level);  in btrfs_get_old_root()
1061 		btrfs_set_header_generation(eb, old_generation);  in btrfs_get_old_root()
1063 	btrfs_set_buffer_lockdep_class(btrfs_header_owner(eb), eb,  in btrfs_get_old_root()
1064 				       btrfs_header_level(eb));  in btrfs_get_old_root()
1065 	btrfs_tree_read_lock(eb);  in btrfs_get_old_root()
1067 		tree_mod_log_rewind(fs_info, eb, time_seq, tm);  in btrfs_get_old_root()
1069 		WARN_ON(btrfs_header_level(eb) != 0);  in btrfs_get_old_root()
1070 	WARN_ON(btrfs_header_nritems(eb) > BTRFS_NODEPTRS_PER_BLOCK(fs_info));  in btrfs_get_old_root()
1072 	return eb;  in btrfs_get_old_root()