btrfs: don't use the extent root in btrfs_chunk_alloc_add_chunk_item

We're just using the extent_root to set the chunk owner to
root_key->objectid, which is BTRFS_EXTENT_TREE_OBJECTID, so use that
directly instead of using the root.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index f463dd5..4f77268 100644 (file)
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -5541,7 +5541,6 @@ int btrfs_chunk_alloc_add_chunk_item(struct btrfs_trans_handle *trans,
                                     struct btrfs_block_group *bg)
 {
        struct btrfs_fs_info *fs_info = trans->fs_info;
-       struct btrfs_root *extent_root = fs_info->extent_root;
        struct btrfs_root *chunk_root = fs_info->chunk_root;
        struct btrfs_key key;
        struct btrfs_chunk *chunk;
@@ -5613,7 +5612,7 @@ int btrfs_chunk_alloc_add_chunk_item(struct btrfs_trans_handle *trans,
        }
 
        btrfs_set_stack_chunk_length(chunk, bg->length);
-       btrfs_set_stack_chunk_owner(chunk, extent_root->root_key.objectid);
+       btrfs_set_stack_chunk_owner(chunk, BTRFS_EXTENT_TREE_OBJECTID);
        btrfs_set_stack_chunk_stripe_len(chunk, map->stripe_len);
        btrfs_set_stack_chunk_type(chunk, map->type);
        btrfs_set_stack_chunk_num_stripes(chunk, map->num_stripes);