btrfs: use BTRFS_DIR_START_INDEX at btrfs_create_new_inode()

We are still using the magic value of 2 at btrfs_create_new_inode(), but
there's now a constant for that, named BTRFS_DIR_START_INDEX, which was
introduced in commit 528ee697126fd ("btrfs: put initial index value of a
directory in a constant"). So change that to use the constant.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index b5037a7..1a1bfbf 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6227,12 +6227,8 @@ int btrfs_create_new_inode(struct btrfs_trans_handle *trans,
                if (ret)
                        goto out;
        }
-       /*
-        * index_cnt is ignored for everything but a dir,
-        * btrfs_set_inode_index_count has an explanation for the magic
-        * number
-        */
-       BTRFS_I(inode)->index_cnt = 2;
+       /* index_cnt is ignored for everything but a dir. */
+       BTRFS_I(inode)->index_cnt = BTRFS_DIR_START_INDEX;
        BTRFS_I(inode)->generation = trans->transid;
        inode->i_generation = BTRFS_I(inode)->generation;