bcachefs: Move tabstop setup to bch2_dev_usage_to_text()

No reason for it not to be where it's needed.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

fs/bcachefs/alloc_foreground.c

@@ -1729,13 +1729,6 @@ void bch2_dev_alloc_debug_to_text(struct printbuf *out, struct bch_dev *ca)
 	for (unsigned i = 0; i < ARRAY_SIZE(c->open_buckets); i++)
 		nr[c->open_buckets[i].data_type]++;
 
-	printbuf_tabstops_reset(out);
-	printbuf_tabstop_push(out, 12);
-	printbuf_tabstop_push(out, 16);
-	printbuf_tabstop_push(out, 16);
-	printbuf_tabstop_push(out, 16);
-	printbuf_tabstop_push(out, 16);
-
 	bch2_dev_usage_to_text(out, ca, &stats);
 
 	prt_newline(out);

fs/bcachefs/buckets.c

@@ -75,6 +75,15 @@ void bch2_dev_usage_to_text(struct printbuf *out,
 			    struct bch_dev *ca,
 			    struct bch_dev_usage *usage)
 {
+	if (out->nr_tabstops < 5) {
+		printbuf_tabstops_reset(out);
+		printbuf_tabstop_push(out, 12);
+		printbuf_tabstop_push(out, 16);
+		printbuf_tabstop_push(out, 16);
+		printbuf_tabstop_push(out, 16);
+		printbuf_tabstop_push(out, 16);
+	}
+
 	prt_printf(out, "\tbuckets\rsectors\rfragmented\r\n");
 
 	for (unsigned i = 0; i < BCH_DATA_NR; i++) {