150 			     u64 offset, int metadata, u64 *refs, u64 *flags)  in btrfs_lookup_extent_info()  argument
239 			refcount_inc(&head->refs);  in btrfs_lookup_extent_info()
266 	if (refs)  in btrfs_lookup_extent_info()
267 		*refs = num_refs;  in btrfs_lookup_extent_info()
1020 	u64 refs;  in setup_inline_extent_backref()  local
1034 	refs = btrfs_extent_refs(leaf, ei);  in setup_inline_extent_backref()
1035 	refs += refs_to_add;  in setup_inline_extent_backref()
1036 	btrfs_set_extent_refs(leaf, ei, refs);  in setup_inline_extent_backref()
1114 	u64 refs;  in update_inline_extent_backref()  local
1117 	refs = btrfs_extent_refs(leaf, ei);  in update_inline_extent_backref()
1118 	WARN_ON(refs_to_mod < 0 && refs + refs_to_mod <= 0);  in update_inline_extent_backref()
1119 	refs += refs_to_mod;  in update_inline_extent_backref()
1120 	btrfs_set_extent_refs(leaf, ei, refs);  in update_inline_extent_backref()
1133 		refs = btrfs_extent_data_ref_count(leaf, dref);  in update_inline_extent_backref()
1136 		refs = btrfs_shared_data_ref_count(leaf, sref);  in update_inline_extent_backref()
1138 		refs = 1;  in update_inline_extent_backref()
1142 	BUG_ON(refs_to_mod < 0 && refs < -refs_to_mod);  in update_inline_extent_backref()
1143 	refs += refs_to_mod;  in update_inline_extent_backref()
1145 	if (refs > 0) {  in update_inline_extent_backref()
1147 			btrfs_set_extent_data_ref_count(leaf, dref, refs);  in update_inline_extent_backref()
1149 			btrfs_set_shared_data_ref_count(leaf, sref, refs);  in update_inline_extent_backref()
1461 	u64 refs;  in __btrfs_inc_extent_ref()  local
1484 	refs = btrfs_extent_refs(leaf, item);  in __btrfs_inc_extent_ref()
1485 	btrfs_set_extent_refs(leaf, item, refs + refs_to_add);  in __btrfs_inc_extent_ref()
2206 		refcount_inc(&head->refs);  in btrfs_run_delayed_refs()
2274 		refcount_inc(&head->refs);  in check_delayed_ref()
3033 	u64 refs;  in __btrfs_free_extent()  local
3199 	refs = btrfs_extent_refs(leaf, ei);  in __btrfs_free_extent()
3200 	if (refs < refs_to_drop) {  in __btrfs_free_extent()
3203 			  refs_to_drop, refs, bytenr);  in __btrfs_free_extent()
3207 	refs -= refs_to_drop;  in __btrfs_free_extent()
3209 	if (refs > 0) {  in __btrfs_free_extent()
3224 			btrfs_set_extent_refs(leaf, ei, refs);  in __btrfs_free_extent()
4816 	u64 refs[BTRFS_MAX_LEVEL];  member
4842 	u64 refs;  in reada_walk_down()  local
4880 					       wc->level - 1, 1, &refs,  in reada_walk_down()
4885 		BUG_ON(refs == 0);  in reada_walk_down()
4888 			if (refs == 1)  in reada_walk_down()
4942 	    ((wc->stage == DROP_REFERENCE && wc->refs[level] != 1) ||  in walk_down_proc()
4947 					       &wc->refs[level],  in walk_down_proc()
4952 		BUG_ON(wc->refs[level] == 0);  in walk_down_proc()
4956 		if (wc->refs[level] > 1)  in walk_down_proc()
5079 				       &wc->refs[level - 1],  in do_walk_down()
5084 	if (unlikely(wc->refs[level - 1] == 0)) {  in do_walk_down()
5092 		if (wc->refs[level - 1] > 1) {  in do_walk_down()
5154 	wc->refs[level - 1] = 0;  in do_walk_down()
5281 						       &wc->refs[level],  in walk_up_proc()
5288 			BUG_ON(wc->refs[level] == 0);  in walk_up_proc()
5289 			if (wc->refs[level] == 1) {  in walk_up_proc()
5298 	BUG_ON(wc->refs[level] > 1 && !path->locks[level]);  in walk_up_proc()
5300 	if (wc->refs[level] == 1) {  in walk_up_proc()
5339 	btrfs_free_tree_block(trans, root, eb, parent, wc->refs[level] == 1);  in walk_up_proc()
5341 	wc->refs[level] = 0;  in walk_up_proc()
5524 						level, 1, &wc->refs[level],  in btrfs_drop_snapshot()
5530 			BUG_ON(wc->refs[level] == 0);  in btrfs_drop_snapshot()
5537 			WARN_ON(wc->refs[level] != 1);  in btrfs_drop_snapshot()
5699 	atomic_inc(&parent->refs);  in btrfs_drop_subtree()
5709 	wc->refs[parent_level] = 1;  in btrfs_drop_subtree()