Btrfs: Implement raid0 when multiple devices are present

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 7556f8319c60..f43dfe7ffe6d 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -413,6 +413,7 @@ struct btrfs_csum_item {
 #define BTRFS_BLOCK_GROUP_DATA     (1 << 0)
 #define BTRFS_BLOCK_GROUP_SYSTEM   (1 << 1)
 #define BTRFS_BLOCK_GROUP_METADATA (1 << 2)
+#define BTRFS_BLOCK_GROUP_RAID0    (1 << 3)
 
 
 struct btrfs_block_group_item {
@@ -498,6 +499,8 @@ struct btrfs_fs_info {
         u64 delalloc_bytes;
         u64 last_alloc;
         u64 last_data_alloc;
+        int extra_data_alloc_bits;
+        int extra_alloc_bits;
 };
 
 /*