bcachefs: Improve btree_bad_header() error message

We should always print out the full btree node ptr.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>

fs/bcachefs/btree_cache.c

@@ -719,26 +719,25 @@ static int lock_node_check_fn(struct six_lock *lock, void *p)
 
 static noinline void btree_bad_header(struct bch_fs *c, struct btree *b)
 {
-	char buf1[100], buf2[100], buf3[100], buf4[100];
+	char buf1[200], buf2[100], buf3[100];
 
 	if (!test_bit(BCH_FS_INITIAL_GC_DONE, &c->flags))
 		return;
 
-	bch2_bpos_to_text(&PBUF(buf1), b->key.k.type == KEY_TYPE_btree_ptr_v2
-		? bkey_i_to_btree_ptr_v2(&b->key)->v.min_key
-		: POS_MIN);
+	bch2_bkey_val_to_text(&PBUF(buf1), c, bkey_i_to_s_c(&b->key));
 	bch2_bpos_to_text(&PBUF(buf2), b->data->min_key);
+	bch2_bpos_to_text(&PBUF(buf3), b->data->max_key);
 
-	bch2_bpos_to_text(&PBUF(buf3), b->key.k.p);
-	bch2_bpos_to_text(&PBUF(buf4), b->data->max_key);
 	bch2_fs_inconsistent(c, "btree node header doesn't match ptr\n"
-			     "btree: ptr %u header %llu\n"
-			     "level: ptr %u header %llu\n"
-			     "min ptr %s node header %s\n"
-			     "max ptr %s node header %s",
-			     b->c.btree_id,	BTREE_NODE_ID(b->data),
-			     b->c.level,	BTREE_NODE_LEVEL(b->data),
-			     buf1, buf2, buf3, buf4);
+			     "btree %s level %u\n"
+			     "ptr: %s\n"
+			     "header: btree %s level %llu\n"
+			     "min %s max %s\n",
+			     bch2_btree_ids[b->c.btree_id], b->c.level,
+			     buf1,
+			     bch2_btree_ids[BTREE_NODE_ID(b->data)],
+			     BTREE_NODE_LEVEL(b->data),
+			     buf2, buf3);
 }
 
 static inline void btree_check_header(struct bch_fs *c, struct btree *b)

fs/bcachefs/extents.c

@@ -191,9 +191,10 @@ void bch2_btree_ptr_v2_to_text(struct printbuf *out, struct bch_fs *c,
 {
 	struct bkey_s_c_btree_ptr_v2 bp = bkey_s_c_to_btree_ptr_v2(k);
 
-	pr_buf(out, "seq %llx written %u min_key ",
+	pr_buf(out, "seq %llx written %u min_key %s",
 	       le64_to_cpu(bp.v->seq),
-	       le16_to_cpu(bp.v->sectors_written));
+	       le16_to_cpu(bp.v->sectors_written),
+	       BTREE_PTR_RANGE_UPDATED(bp.v) ? "R " : "");
 
 	bch2_bpos_to_text(out, bp.v->min_key);
 	pr_buf(out, " ");