v4.19.13 snapshot.
diff --git a/drivers/md/bcache/request.h b/drivers/md/bcache/request.h
new file mode 100644
index 0000000..aa055cf
--- /dev/null
+++ b/drivers/md/bcache/request.h
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _BCACHE_REQUEST_H_
+#define _BCACHE_REQUEST_H_
+
+struct data_insert_op {
+ struct closure cl;
+ struct cache_set *c;
+ struct bio *bio;
+ struct workqueue_struct *wq;
+
+ unsigned int inode;
+ uint16_t write_point;
+ uint16_t write_prio;
+ blk_status_t status;
+
+ union {
+ uint16_t flags;
+
+ struct {
+ unsigned int bypass:1;
+ unsigned int writeback:1;
+ unsigned int flush_journal:1;
+ unsigned int csum:1;
+
+ unsigned int replace:1;
+ unsigned int replace_collision:1;
+
+ unsigned int insert_data_done:1;
+ };
+ };
+
+ struct keylist insert_keys;
+ BKEY_PADDED(replace_key);
+};
+
+unsigned int bch_get_congested(struct cache_set *c);
+void bch_data_insert(struct closure *cl);
+
+void bch_cached_dev_request_init(struct cached_dev *dc);
+void bch_flash_dev_request_init(struct bcache_device *d);
+
+extern struct kmem_cache *bch_search_cache, *bch_passthrough_cache;
+
+#endif /* _BCACHE_REQUEST_H_ */