bcachefs: Fix bch2_replicas_gc2

This fixes a regression introduced by "bcachefs: Refactor filesystem
usage accounting". We have to include all the replicas entries that have
any of the entries for different journal entries nonzero, we can't skip
them if they sum to zero.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

fs/bcachefs/replicas.c

@@ -607,7 +607,11 @@ int bch2_replicas_gc2(struct bch_fs *c)
 			cpu_replicas_entry(&c->replicas, i);
 
 		if (e->data_type == BCH_DATA_journal ||
-		    bch2_fs_usage_read_one(c, &c->usage_base->replicas[i]))
+		    c->usage_base->replicas[i] ||
+		    percpu_u64_get(&c->usage[0]->replicas[i]) ||
+		    percpu_u64_get(&c->usage[1]->replicas[i]) ||
+		    percpu_u64_get(&c->usage[2]->replicas[i]) ||
+		    percpu_u64_get(&c->usage[3]->replicas[i]))
 			memcpy(cpu_replicas_entry(&new, new.nr++),
 			       e, new.entry_size);
 	}