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Date:   Wed, 12 Feb 2020 17:03:41 +0100
From:   David Sterba <dsterba@suse.cz>
To:     Stephen Rothwell <sfr@canb.auug.org.au>
Cc:     Linux Next Mailing List <linux-next@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Johannes Thumshirn <johannes.thumshirn@wdc.com>
Subject: Re: linux-next: build warning after merge of the btrfs tree
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On Wed, Feb 12, 2020 at 09:10:28AM +1100, Stephen Rothwell wrote:
> Hi all,
> 
> After merging the btrfs tree, today's linux-next build (powerpc
> ppc64_defconfig) produced this warning:
> 
> fs/btrfs/volumes.c: In function 'btrfs_scratch_superblocks':
> fs/btrfs/volumes.c:7338:3: warning: ignoring return value of 'write_one_page', declared with attribute warn_unused_result [-Wunused-result]
>  7338 |   write_one_page(page);
>       |   ^~~~~~~~~~~~~~~~~~~~
> 
> Introduced by commit
> 
>   d19ec014a46b ("btrfs: use the page-cache for super block reading")

Known and fix is in the patchset revision that will be in the next
for-next branch update. Thanks.