152 			     u64 offset, int metadata, u64 *refs, u64 *flags)  in btrfs_lookup_extent_info()  argument
241 			refcount_inc(&head->refs);  in btrfs_lookup_extent_info()
268 	if (refs)  in btrfs_lookup_extent_info()
269 		*refs = num_refs;  in btrfs_lookup_extent_info()
1023 	u64 refs;  in setup_inline_extent_backref()  local
1037 	refs = btrfs_extent_refs(leaf, ei);  in setup_inline_extent_backref()
1038 	refs += refs_to_add;  in setup_inline_extent_backref()
1039 	btrfs_set_extent_refs(leaf, ei, refs);  in setup_inline_extent_backref()
1117 	u64 refs;  in update_inline_extent_backref()  local
1120 	refs = btrfs_extent_refs(leaf, ei);  in update_inline_extent_backref()
1121 	WARN_ON(refs_to_mod < 0 && refs + refs_to_mod <= 0);  in update_inline_extent_backref()
1122 	refs += refs_to_mod;  in update_inline_extent_backref()
1123 	btrfs_set_extent_refs(leaf, ei, refs);  in update_inline_extent_backref()
1136 		refs = btrfs_extent_data_ref_count(leaf, dref);  in update_inline_extent_backref()
1139 		refs = btrfs_shared_data_ref_count(leaf, sref);  in update_inline_extent_backref()
1141 		refs = 1;  in update_inline_extent_backref()
1145 	BUG_ON(refs_to_mod < 0 && refs < -refs_to_mod);  in update_inline_extent_backref()
1146 	refs += refs_to_mod;  in update_inline_extent_backref()
1148 	if (refs > 0) {  in update_inline_extent_backref()
1150 			btrfs_set_extent_data_ref_count(leaf, dref, refs);  in update_inline_extent_backref()
1152 			btrfs_set_shared_data_ref_count(leaf, sref, refs);  in update_inline_extent_backref()
1443 	u64 refs;  in __btrfs_inc_extent_ref()  local
1467 	refs = btrfs_extent_refs(leaf, item);  in __btrfs_inc_extent_ref()
1468 	btrfs_set_extent_refs(leaf, item, refs + refs_to_add);  in __btrfs_inc_extent_ref()
2203 		refcount_inc(&head->refs);  in btrfs_run_delayed_refs()
2271 		refcount_inc(&head->refs);  in check_delayed_ref()
2967 	u64 refs;  in __btrfs_free_extent()  local
3102 	refs = btrfs_extent_refs(leaf, ei);  in __btrfs_free_extent()
3103 	if (refs < refs_to_drop) {  in __btrfs_free_extent()
3106 			  refs_to_drop, refs, bytenr);  in __btrfs_free_extent()
3111 	refs -= refs_to_drop;  in __btrfs_free_extent()
3113 	if (refs > 0) {  in __btrfs_free_extent()
3123 			btrfs_set_extent_refs(leaf, ei, refs);  in __btrfs_free_extent()
4575 	u64 refs[BTRFS_MAX_LEVEL];  member
4601 	u64 refs;  in reada_walk_down()  local
4639 					       wc->level - 1, 1, &refs,  in reada_walk_down()
4644 		BUG_ON(refs == 0);  in reada_walk_down()
4647 			if (refs == 1)  in reada_walk_down()
4701 	    ((wc->stage == DROP_REFERENCE && wc->refs[level] != 1) ||  in walk_down_proc()
4706 					       &wc->refs[level],  in walk_down_proc()
4711 		BUG_ON(wc->refs[level] == 0);  in walk_down_proc()
4715 		if (wc->refs[level] > 1)  in walk_down_proc()
4839 				       &wc->refs[level - 1],  in do_walk_down()
4844 	if (unlikely(wc->refs[level - 1] == 0)) {  in do_walk_down()
4852 		if (wc->refs[level - 1] > 1) {  in do_walk_down()
4914 	wc->refs[level - 1] = 0;  in do_walk_down()
5041 						       &wc->refs[level],  in walk_up_proc()
5048 			BUG_ON(wc->refs[level] == 0);  in walk_up_proc()
5049 			if (wc->refs[level] == 1) {  in walk_up_proc()
5058 	BUG_ON(wc->refs[level] > 1 && !path->locks[level]);  in walk_up_proc()
5060 	if (wc->refs[level] == 1) {  in walk_up_proc()
5099 	btrfs_free_tree_block(trans, root, eb, parent, wc->refs[level] == 1);  in walk_up_proc()
5101 	wc->refs[level] = 0;  in walk_up_proc()
5282 						level, 1, &wc->refs[level],  in btrfs_drop_snapshot()
5288 			BUG_ON(wc->refs[level] == 0);  in btrfs_drop_snapshot()
5295 			WARN_ON(wc->refs[level] != 1);  in btrfs_drop_snapshot()
5466 	wc->refs[parent_level] = 1;  in btrfs_drop_subtree()