Move init into a separate file

blockstore.h

@@ -7,6 +7,7 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <stdint.h>
+#include <malloc.h>
 #include <linux/fs.h>
 #include <liburing.h>
 
@@ -137,26 +138,7 @@ struct blockstore_operation
 
 class blockstore;
 
-class blockstore_init_meta
-{
-    blockstore *bs;
-    uint8_t *metadata_buffer;
-    uint64_t metadata_read = 0;
-    struct iovec submit_iov;
-    int prev = 0, prev_done = 0, done_len = 0, submitted = 0, done_cnt = 0;
-public:
-    blockstore_init_meta(blockstore* bs);
-    int read_loop();
-    void handle_entries(struct clean_disk_entry* entries, int count);
-};
-
-class blockstore_init_journal
-{
-    blockstore *bs;
-public:
-    blockstore_init_journal(blockstore* bs);
-    int read_loop();
-};
+#include "blockstore_init.h"
 
 class blockstore
 {