Btrfs: generic data structure to build unique lists

[cascardo/linux.git] / fs / btrfs / volumes.h

diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index ab5b1c4..78f2d4d 100644 (file)
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -100,6 +100,12 @@ struct btrfs_device {
        struct reada_zone *reada_curr_zone;
        struct radix_tree_root reada_zones;
        struct radix_tree_root reada_extents;
+
+       /* for sending down flush barriers */
+       struct bio *flush_bio;
+       struct completion flush_wait;
+       int nobarriers;
+
 };
 
 struct btrfs_fs_devices {