Re: [PATCH] btrfs: ref-verify: Remove unused parameter from walk_up_tree() to kill warning

[David Sterba]

On Wed, Nov 15, 2017 at 04:04:40PM +0100, Geert Uytterhoeven wrote:
> With gcc-4.1.2:
> 
>     fs/btrfs/ref-verify.c: In function âbtrfs_build_ref_treeâ:
>     fs/btrfs/ref-verify.c:1017: warning: ârootâ is used uninitialized in this function
> 
> The variable is indeed passed uninitialized, but it is never used by the
> callee.  However, not all versions of gcc are smart enough to notice.
> 
> Hence remove the unused parameter from walk_up_tree() to silence the
> compiler warning.
> 
> Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>

Reviewed-by: David Sterba <dsterba@xxxxxxxx>