+ struct bch_fs *c = trans->c;
+ struct bch_dev *ca = bch_dev_bkey_exists(c, ptr->dev);
+ size_t bucket_nr = PTR_BUCKET_NR(ca, ptr);
+ u32 bucket_sectors = !ptr->cached
+ ? dirty_sectors
+ : cached_sectors;
+ struct printbuf buf = PRINTBUF;
+ int ret = 0;
+
+ if (bucket_data_type == BCH_DATA_cached)
+ bucket_data_type = BCH_DATA_user;
+
+ if ((bucket_data_type == BCH_DATA_stripe && ptr_data_type == BCH_DATA_user) ||
+ (bucket_data_type == BCH_DATA_user && ptr_data_type == BCH_DATA_stripe))
+ bucket_data_type = ptr_data_type = BCH_DATA_stripe;
+
+ if (gen_after(ptr->gen, b_gen)) {
+ bch2_fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK,
+ BCH_FSCK_ERR_ptr_gen_newer_than_bucket_gen,
+ "bucket %u:%zu gen %u data type %s: ptr gen %u newer than bucket gen\n"
+ "while marking %s",
+ ptr->dev, bucket_nr, b_gen,
+ bch2_data_types[bucket_data_type ?: ptr_data_type],
+ ptr->gen,
+ (bch2_bkey_val_to_text(&buf, c, k), buf.buf));
+ ret = -EIO;
+ goto err;
+ }
+
+ if (gen_cmp(b_gen, ptr->gen) > BUCKET_GC_GEN_MAX) {
+ bch2_fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK,
+ BCH_FSCK_ERR_ptr_too_stale,
+ "bucket %u:%zu gen %u data type %s: ptr gen %u too stale\n"
+ "while marking %s",
+ ptr->dev, bucket_nr, b_gen,
+ bch2_data_types[bucket_data_type ?: ptr_data_type],
+ ptr->gen,
+ (printbuf_reset(&buf),
+ bch2_bkey_val_to_text(&buf, c, k), buf.buf));
+ ret = -EIO;
+ goto err;
+ }
+
+ if (b_gen != ptr->gen && !ptr->cached) {
+ bch2_fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK,
+ BCH_FSCK_ERR_stale_dirty_ptr,
+ "bucket %u:%zu gen %u (mem gen %u) data type %s: stale dirty ptr (gen %u)\n"
+ "while marking %s",
+ ptr->dev, bucket_nr, b_gen,
+ *bucket_gen(ca, bucket_nr),
+ bch2_data_types[bucket_data_type ?: ptr_data_type],
+ ptr->gen,
+ (printbuf_reset(&buf),
+ bch2_bkey_val_to_text(&buf, c, k), buf.buf));
+ ret = -EIO;
+ goto err;
+ }
+
+ if (b_gen != ptr->gen) {
+ ret = 1;
+ goto out;
+ }
+
+ if (!data_type_is_empty(bucket_data_type) &&
+ ptr_data_type &&
+ bucket_data_type != ptr_data_type) {
+ bch2_fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK,
+ BCH_FSCK_ERR_ptr_bucket_data_type_mismatch,
+ "bucket %u:%zu gen %u different types of data in same bucket: %s, %s\n"
+ "while marking %s",
+ ptr->dev, bucket_nr, b_gen,
+ bch2_data_types[bucket_data_type],
+ bch2_data_types[ptr_data_type],
+ (printbuf_reset(&buf),
+ bch2_bkey_val_to_text(&buf, c, k), buf.buf));
+ ret = -EIO;
+ goto err;
+ }