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-rw-r--r--fs/btrfs/volumes.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index ab5b1c49f352..78f2d4d4f37f 100644
--- 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 {
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