linux-kernel - Re: disk-io.c:undefined reference to `atomic64_set

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Message-ID: <20210406144303.GF7604@suse.cz>
Date:   Tue, 6 Apr 2021 16:43:03 +0200
From:   David Sterba <dsterba@...e.cz>
To:     kernel test robot <lkp@...el.com>
Cc:     Josef Bacik <josef@...icpanda.com>, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, David Sterba <dsterba@...e.com>
Subject: Re: disk-io.c:undefined reference to `atomic64_set_386'

On Thu, Apr 01, 2021 at 12:34:38AM +0800, kernel test robot wrote:
> Hi Josef,
> 
> FYI, the error/warning still remains.
> 
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   5e46d1b78a03d52306f21f77a4e4a144b6d31486
> commit: 8260edba67a2e6bd5e709d32188e23aa22cb4a38 btrfs: make the init of static elements in fs_info separate
> date:   1 year ago
> config: um-randconfig-r023-20210330 (attached as .config)
> compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
> reproduce (this is a W=1 build):
>         # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8260edba67a2e6bd5e709d32188e23aa22cb4a38
>         git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>         git fetch --no-tags linus master
>         git checkout 8260edba67a2e6bd5e709d32188e23aa22cb4a38
>         # save the attached .config to linux build tree
>         make W=1 ARCH=um 

All the reports regarding atomic64_*_386 are from ARCH=um build, so
it needs to be fixed there.