807 			     u64 offset, int metadata, u64 *refs, u64 *flags)  in btrfs_lookup_extent_info()  argument
899 			atomic_inc(&head->node.refs);  in btrfs_lookup_extent_info()
926 	if (refs)  in btrfs_lookup_extent_info()
927 		*refs = num_refs;  in btrfs_lookup_extent_info()
1055 	u64 refs;  in convert_extent_item_v0()  local
1064 	refs = btrfs_extent_refs_v0(leaf, ei0);  in convert_extent_item_v0()
1104 	btrfs_set_extent_refs(leaf, item, refs);  in convert_extent_item_v0()
1736 	u64 refs;  in setup_inline_extent_backref()  local
1750 	refs = btrfs_extent_refs(leaf, ei);  in setup_inline_extent_backref()
1751 	refs += refs_to_add;  in setup_inline_extent_backref()
1752 	btrfs_set_extent_refs(leaf, ei, refs);  in setup_inline_extent_backref()
1832 	u64 refs;  in update_inline_extent_backref()  local
1836 	refs = btrfs_extent_refs(leaf, ei);  in update_inline_extent_backref()
1837 	WARN_ON(refs_to_mod < 0 && refs + refs_to_mod <= 0);  in update_inline_extent_backref()
1838 	refs += refs_to_mod;  in update_inline_extent_backref()
1839 	btrfs_set_extent_refs(leaf, ei, refs);  in update_inline_extent_backref()
1847 		refs = btrfs_extent_data_ref_count(leaf, dref);  in update_inline_extent_backref()
1850 		refs = btrfs_shared_data_ref_count(leaf, sref);  in update_inline_extent_backref()
1852 		refs = 1;  in update_inline_extent_backref()
1856 	BUG_ON(refs_to_mod < 0 && refs < -refs_to_mod);  in update_inline_extent_backref()
1857 	refs += refs_to_mod;  in update_inline_extent_backref()
1859 	if (refs > 0) {  in update_inline_extent_backref()
1861 			btrfs_set_extent_data_ref_count(leaf, dref, refs);  in update_inline_extent_backref()
1863 			btrfs_set_shared_data_ref_count(leaf, sref, refs);  in update_inline_extent_backref()
2111 	u64 refs;  in __btrfs_inc_extent_ref()  local
2136 	refs = btrfs_extent_refs(leaf, item);  in __btrfs_inc_extent_ref()
2137 	btrfs_set_extent_refs(leaf, item, refs + refs_to_add);  in __btrfs_inc_extent_ref()
2950 				atomic_inc(&ref->refs);  in btrfs_run_delayed_refs()
3023 		atomic_inc(&head->node.refs);  in check_delayed_ref()
6433 	u64 refs;  in __btrfs_free_extent()  local
6603 	refs = btrfs_extent_refs(leaf, ei);  in __btrfs_free_extent()
6604 	if (refs < refs_to_drop) {  in __btrfs_free_extent()
6606 			  "for bytenr %Lu", refs_to_drop, refs, bytenr);  in __btrfs_free_extent()
6611 	refs -= refs_to_drop;  in __btrfs_free_extent()
6613 	if (refs > 0) {  in __btrfs_free_extent()
6623 			btrfs_set_extent_refs(leaf, ei, refs);  in __btrfs_free_extent()
8016 	u64 refs[BTRFS_MAX_LEVEL];  member
8039 	u64 refs;  in reada_walk_down()  local
8079 					       wc->level - 1, 1, &refs,  in reada_walk_down()
8084 		BUG_ON(refs == 0);  in reada_walk_down()
8087 			if (refs == 1)  in reada_walk_down()
8380 	    ((wc->stage == DROP_REFERENCE && wc->refs[level] != 1) ||  in walk_down_proc()
8385 					       &wc->refs[level],  in walk_down_proc()
8390 		BUG_ON(wc->refs[level] == 0);  in walk_down_proc()
8394 		if (wc->refs[level] > 1)  in walk_down_proc()
8487 				       &wc->refs[level - 1],  in do_walk_down()
8494 	if (unlikely(wc->refs[level - 1] == 0)) {  in do_walk_down()
8501 		if (wc->refs[level - 1] > 1) {  in do_walk_down()
8557 	wc->refs[level - 1] = 0;  in do_walk_down()
8637 						       &wc->refs[level],  in walk_up_proc()
8644 			BUG_ON(wc->refs[level] == 0);  in walk_up_proc()
8645 			if (wc->refs[level] == 1) {  in walk_up_proc()
8654 	BUG_ON(wc->refs[level] > 1 && !path->locks[level]);  in walk_up_proc()
8656 	if (wc->refs[level] == 1) {  in walk_up_proc()
8696 	btrfs_free_tree_block(trans, root, eb, parent, wc->refs[level] == 1);  in walk_up_proc()
8698 	wc->refs[level] = 0;  in walk_up_proc()
8858 						level, 1, &wc->refs[level],  in btrfs_drop_snapshot()
8864 			BUG_ON(wc->refs[level] == 0);  in btrfs_drop_snapshot()
8871 			WARN_ON(wc->refs[level] != 1);  in btrfs_drop_snapshot()
9037 	wc->refs[parent_level] = 1;  in btrfs_drop_subtree()