745 			     u64 offset, int metadata, u64 *refs, u64 *flags)  in btrfs_lookup_extent_info()  argument
837 			atomic_inc(&head->node.refs);  in btrfs_lookup_extent_info()
864 	if (refs)  in btrfs_lookup_extent_info()
865 		*refs = num_refs;  in btrfs_lookup_extent_info()
993 	u64 refs;  in convert_extent_item_v0()  local
1002 	refs = btrfs_extent_refs_v0(leaf, ei0);  in convert_extent_item_v0()
1042 	btrfs_set_extent_refs(leaf, item, refs);  in convert_extent_item_v0()
1675 	u64 refs;  in setup_inline_extent_backref()  local
1689 	refs = btrfs_extent_refs(leaf, ei);  in setup_inline_extent_backref()
1690 	refs += refs_to_add;  in setup_inline_extent_backref()
1691 	btrfs_set_extent_refs(leaf, ei, refs);  in setup_inline_extent_backref()
1771 	u64 refs;  in update_inline_extent_backref()  local
1775 	refs = btrfs_extent_refs(leaf, ei);  in update_inline_extent_backref()
1776 	WARN_ON(refs_to_mod < 0 && refs + refs_to_mod <= 0);  in update_inline_extent_backref()
1777 	refs += refs_to_mod;  in update_inline_extent_backref()
1778 	btrfs_set_extent_refs(leaf, ei, refs);  in update_inline_extent_backref()
1786 		refs = btrfs_extent_data_ref_count(leaf, dref);  in update_inline_extent_backref()
1789 		refs = btrfs_shared_data_ref_count(leaf, sref);  in update_inline_extent_backref()
1791 		refs = 1;  in update_inline_extent_backref()
1795 	BUG_ON(refs_to_mod < 0 && refs < -refs_to_mod);  in update_inline_extent_backref()
1796 	refs += refs_to_mod;  in update_inline_extent_backref()
1798 	if (refs > 0) {  in update_inline_extent_backref()
1800 			btrfs_set_extent_data_ref_count(leaf, dref, refs);  in update_inline_extent_backref()
1802 			btrfs_set_shared_data_ref_count(leaf, sref, refs);  in update_inline_extent_backref()
1981 	u64 refs;  in __btrfs_inc_extent_ref()  local
2028 	refs = btrfs_extent_refs(leaf, item);  in __btrfs_inc_extent_ref()
2029 	if (refs)  in __btrfs_inc_extent_ref()
2031 	btrfs_set_extent_refs(leaf, item, refs + refs_to_add);  in __btrfs_inc_extent_ref()
2844 				atomic_inc(&ref->refs);  in btrfs_run_delayed_refs()
2920 		atomic_inc(&head->node.refs);  in check_delayed_ref()
6120 	u64 refs;  in __btrfs_free_extent()  local
6292 	refs = btrfs_extent_refs(leaf, ei);  in __btrfs_free_extent()
6293 	if (refs < refs_to_drop) {  in __btrfs_free_extent()
6295 			  "for bytenr %Lu", refs_to_drop, refs, bytenr);  in __btrfs_free_extent()
6300 	refs -= refs_to_drop;  in __btrfs_free_extent()
6302 	if (refs > 0) {  in __btrfs_free_extent()
6313 			btrfs_set_extent_refs(leaf, ei, refs);  in __btrfs_free_extent()
7667 	u64 refs[BTRFS_MAX_LEVEL];  member
7690 	u64 refs;  in reada_walk_down()  local
7730 					       wc->level - 1, 1, &refs,  in reada_walk_down()
7735 		BUG_ON(refs == 0);  in reada_walk_down()
7738 			if (refs == 1)  in reada_walk_down()
8003 	    ((wc->stage == DROP_REFERENCE && wc->refs[level] != 1) ||  in walk_down_proc()
8008 					       &wc->refs[level],  in walk_down_proc()
8013 		BUG_ON(wc->refs[level] == 0);  in walk_down_proc()
8017 		if (wc->refs[level] > 1)  in walk_down_proc()
8110 				       &wc->refs[level - 1],  in do_walk_down()
8117 	if (unlikely(wc->refs[level - 1] == 0)) {  in do_walk_down()
8124 		if (wc->refs[level - 1] > 1) {  in do_walk_down()
8178 	wc->refs[level - 1] = 0;  in do_walk_down()
8257 						       &wc->refs[level],  in walk_up_proc()
8264 			BUG_ON(wc->refs[level] == 0);  in walk_up_proc()
8265 			if (wc->refs[level] == 1) {  in walk_up_proc()
8274 	BUG_ON(wc->refs[level] > 1 && !path->locks[level]);  in walk_up_proc()
8276 	if (wc->refs[level] == 1) {  in walk_up_proc()
8315 	btrfs_free_tree_block(trans, root, eb, parent, wc->refs[level] == 1);  in walk_up_proc()
8317 	wc->refs[level] = 0;  in walk_up_proc()
8477 						level, 1, &wc->refs[level],  in btrfs_drop_snapshot()
8483 			BUG_ON(wc->refs[level] == 0);  in btrfs_drop_snapshot()
8490 			WARN_ON(wc->refs[level] != 1);  in btrfs_drop_snapshot()
8682 	wc->refs[parent_level] = 1;  in btrfs_drop_subtree()