115 			     u64 offset, int metadata, u64 *refs, u64 *flags)  in btrfs_lookup_extent_info()  argument
204 			refcount_inc(&head->refs);  in btrfs_lookup_extent_info()
231 	if (refs)  in btrfs_lookup_extent_info()
232 		*refs = num_refs;  in btrfs_lookup_extent_info()
985 	u64 refs;  in setup_inline_extent_backref()  local
999 	refs = btrfs_extent_refs(leaf, ei);  in setup_inline_extent_backref()
1000 	refs += refs_to_add;  in setup_inline_extent_backref()
1001 	btrfs_set_extent_refs(leaf, ei, refs);  in setup_inline_extent_backref()
1079 	u64 refs;  in update_inline_extent_backref()  local
1082 	refs = btrfs_extent_refs(leaf, ei);  in update_inline_extent_backref()
1083 	WARN_ON(refs_to_mod < 0 && refs + refs_to_mod <= 0);  in update_inline_extent_backref()
1084 	refs += refs_to_mod;  in update_inline_extent_backref()
1085 	btrfs_set_extent_refs(leaf, ei, refs);  in update_inline_extent_backref()
1098 		refs = btrfs_extent_data_ref_count(leaf, dref);  in update_inline_extent_backref()
1101 		refs = btrfs_shared_data_ref_count(leaf, sref);  in update_inline_extent_backref()
1103 		refs = 1;  in update_inline_extent_backref()
1107 	BUG_ON(refs_to_mod < 0 && refs < -refs_to_mod);  in update_inline_extent_backref()
1108 	refs += refs_to_mod;  in update_inline_extent_backref()
1110 	if (refs > 0) {  in update_inline_extent_backref()
1112 			btrfs_set_extent_data_ref_count(leaf, dref, refs);  in update_inline_extent_backref()
1114 			btrfs_set_shared_data_ref_count(leaf, sref, refs);  in update_inline_extent_backref()
1424 	u64 refs;  in __btrfs_inc_extent_ref()  local
1447 	refs = btrfs_extent_refs(leaf, item);  in __btrfs_inc_extent_ref()
1448 	btrfs_set_extent_refs(leaf, item, refs + refs_to_add);  in __btrfs_inc_extent_ref()
2163 		refcount_inc(&head->refs);  in btrfs_run_delayed_refs()
2231 		refcount_inc(&head->refs);  in check_delayed_ref()
2963 	u64 refs;  in __btrfs_free_extent()  local
3129 	refs = btrfs_extent_refs(leaf, ei);  in __btrfs_free_extent()
3130 	if (refs < refs_to_drop) {  in __btrfs_free_extent()
3133 			  refs_to_drop, refs, bytenr);  in __btrfs_free_extent()
3137 	refs -= refs_to_drop;  in __btrfs_free_extent()
3139 	if (refs > 0) {  in __btrfs_free_extent()
3154 			btrfs_set_extent_refs(leaf, ei, refs);  in __btrfs_free_extent()
4728 	u64 refs[BTRFS_MAX_LEVEL];  member
4754 	u64 refs;  in reada_walk_down()  local
4792 					       wc->level - 1, 1, &refs,  in reada_walk_down()
4797 		BUG_ON(refs == 0);  in reada_walk_down()
4800 			if (refs == 1)  in reada_walk_down()
4854 	    ((wc->stage == DROP_REFERENCE && wc->refs[level] != 1) ||  in walk_down_proc()
4859 					       &wc->refs[level],  in walk_down_proc()
4864 		BUG_ON(wc->refs[level] == 0);  in walk_down_proc()
4868 		if (wc->refs[level] > 1)  in walk_down_proc()
4991 				       &wc->refs[level - 1],  in do_walk_down()
4996 	if (unlikely(wc->refs[level - 1] == 0)) {  in do_walk_down()
5004 		if (wc->refs[level - 1] > 1) {  in do_walk_down()
5066 	wc->refs[level - 1] = 0;  in do_walk_down()
5193 						       &wc->refs[level],  in walk_up_proc()
5200 			BUG_ON(wc->refs[level] == 0);  in walk_up_proc()
5201 			if (wc->refs[level] == 1) {  in walk_up_proc()
5210 	BUG_ON(wc->refs[level] > 1 && !path->locks[level]);  in walk_up_proc()
5212 	if (wc->refs[level] == 1) {  in walk_up_proc()
5251 	btrfs_free_tree_block(trans, root, eb, parent, wc->refs[level] == 1);  in walk_up_proc()
5253 	wc->refs[level] = 0;  in walk_up_proc()
5436 						level, 1, &wc->refs[level],  in btrfs_drop_snapshot()
5442 			BUG_ON(wc->refs[level] == 0);  in btrfs_drop_snapshot()
5449 			WARN_ON(wc->refs[level] != 1);  in btrfs_drop_snapshot()
5619 	atomic_inc(&parent->refs);  in btrfs_drop_subtree()
5629 	wc->refs[parent_level] = 1;  in btrfs_drop_subtree()