On Thu, Jan 24, 2019 at 09:53:38AM +1100, Stephen Rothwell wrote:
> Hi David,
>
> After merging the btrfs-kdave tree, today's linux-next build (powerpc
> ppc64_defconfig) produced this warning:
>
> fs/btrfs/relocation.c: In function 'insert_dirty_subv':
> fs/btrfs/relocation.c:2138:6: warning: unused variable 'root_objectid' [-Wunused-variable]
> u64 root_objectid = root->root_key.objectid;
> ^~~~~~~~~~~~~
>
> Introduced by commit
>
> 7b837199c581 ("btrfs: relocation: Delay reloc tree deletion after merge_reloc_roots()")
>
> Presumably the ASSERT is compiled out in this configuration.
Agreed, thanks for the report. I'll drop the temporary variable.
