diff --git a/fs/bcachefs/btree_gc.c b/fs/bcachefs/btree_gc.c
index dfc842d6e822..b712620a1703 100644
--- a/fs/bcachefs/btree_gc.c
+++ b/fs/bcachefs/btree_gc.c
@@ -45,6 +45,22 @@
 #define DROP_PREV_NODE		11
 #define DID_FILL_FROM_SCAN	12
 
+static const char * const bch2_gc_phase_strs[] = {
+#define x(n)	#n,
+	GC_PHASES()
+#undef x
+	NULL
+};
+
+void bch2_gc_pos_to_text(struct printbuf *out, struct gc_pos *p)
+{
+	prt_str(out, bch2_gc_phase_strs[p->phase]);
+	prt_char(out, ' ');
+	bch2_btree_id_to_text(out, p->btree);
+	prt_printf(out, " l=%u ", p->level);
+	bch2_bpos_to_text(out, p->pos);
+}
+
 static struct bkey_s unsafe_bkey_s_c_to_s(struct bkey_s_c k)
 {
 	return (struct bkey_s) {{{
diff --git a/fs/bcachefs/btree_gc.h b/fs/bcachefs/btree_gc.h
index 7f8855420c19..8a47e8bd0791 100644
--- a/fs/bcachefs/btree_gc.h
+++ b/fs/bcachefs/btree_gc.h
@@ -78,6 +78,8 @@ static inline bool gc_visited(struct bch_fs *c, struct gc_pos pos)
 	return ret;
 }
 
+void bch2_gc_pos_to_text(struct printbuf *, struct gc_pos *);
+
 int bch2_gc_gens(struct bch_fs *);
 void bch2_gc_gens_async(struct bch_fs *);
 void bch2_fs_gc_init(struct bch_fs *);
diff --git a/fs/bcachefs/btree_gc_types.h b/fs/bcachefs/btree_gc_types.h
index b82c24bcc088..c24dd6edf377 100644
--- a/fs/bcachefs/btree_gc_types.h
+++ b/fs/bcachefs/btree_gc_types.h
@@ -4,11 +4,16 @@
 
 #include <linux/generic-radix-tree.h>
 
+#define GC_PHASES()		\
+	x(not_running)		\
+	x(start)		\
+	x(sb)			\
+	x(btree)
+
 enum gc_phase {
-	GC_PHASE_not_running,
-	GC_PHASE_start,
-	GC_PHASE_sb,
-	GC_PHASE_btree,
+#define x(n)	GC_PHASE_##n,
+	GC_PHASES()
+#undef x
 };
 
 struct gc_pos {