1 files changed, 7 insertions, 3 deletions

diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 4df6b1608f91..48a44f7a9385 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -20,6 +20,7 @@
 #define __BTRFS_VOLUMES_
 
 #include <linux/bio.h>
+#include "async-thread.h"
 
 struct buffer_head;
 struct btrfs_device {
@@ -27,6 +28,9 @@ struct btrfs_device {
         struct list_head dev_alloc_list;
         struct btrfs_root *dev_root;
         struct buffer_head *pending_io;
+        struct bio *pending_bios;
+        struct bio *pending_bio_tail;
+        int running_pending;
         u64 generation;
 
         int barriers;
@@ -36,8 +40,6 @@ struct btrfs_device {
 
         struct block_device *bdev;
 
-        u64 total_ios;
-
         char *name;
 
         /* the internal btrfs device id */
@@ -63,6 +65,8 @@ struct btrfs_device {
 
         /* physical drive uuid (or lvm uuid) */
         u8 uuid[BTRFS_UUID_SIZE];
+
+        struct btrfs_work work;
 };
 
 struct btrfs_fs_devices {
@@ -117,7 +121,7 @@ int btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
 void btrfs_mapping_init(struct btrfs_mapping_tree *tree);
 void btrfs_mapping_tree_free(struct btrfs_mapping_tree *tree);
 int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio,
-                  int mirror_num);
+                  int mirror_num, int async_submit);
 int btrfs_read_super_device(struct btrfs_root *root, struct extent_buffer *buf);
 int btrfs_open_devices(struct btrfs_fs_devices *fs_devices,
                        int flags, void *holder);