btrfs: kill pointless reassignment of ->s_fs_info in btrfs_fill_super()

We do not (fortunately) modify ->s_fs_info of superblock on the fly in
btrfs_fill_super(); apparent assignment is a no-op.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 56e007f..a381f9f 100644 (file)
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -588,8 +588,8 @@ static int btrfs_fill_super(struct super_block *sb,
 {
        struct inode *inode;
        struct dentry *root_dentry;
-       struct btrfs_root *tree_root;
-       struct btrfs_fs_info *fs_info;
+       struct btrfs_root *tree_root = sb->s_fs_info;
+       struct btrfs_fs_info *fs_info = tree_root->fs_info;
        struct btrfs_key key;
        int err;
 
@@ -609,9 +609,6 @@ static int btrfs_fill_super(struct super_block *sb,
                printk("btrfs: open_ctree failed\n");
                return err;
        }
-       tree_root = sb->s_fs_info;
-       fs_info = tree_root->fs_info;
-       sb->s_fs_info = tree_root;
 
        key.objectid = BTRFS_FIRST_FREE_OBJECTID;
        key.type = BTRFS_INODE_ITEM_KEY;