Re: [PATCH] xfs: Fix 64-bit division on 32-bit in xlog_state_switch_iclogs()

From: Dave Chinner
Date: Thu Jun 10 2021 - 18:03:09 EST


On Thu, Jun 10, 2021 at 01:00:01PM +0200, Geert Uytterhoeven wrote:
> On 32-bit (e.g. m68k):
>
> ERROR: modpost: "__udivdi3" [fs/xfs/xfs.ko] undefined!
>
> Fix this by using a uint32_t intermediate, like before.
>
> Reported-by: noreply@xxxxxxxxxxxxxx
> Fixes: 7660a5b48fbef958 ("xfs: log stripe roundoff is a property of the log")
> Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
> ---
> Compile-tested only.
> ---
> fs/xfs/xfs_log.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)

<sigh>

64 bit division on 32 bit platforms is still a problem in this day
and age?

Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx>

Maybe we should just put "requires 64 bit kernel" on XFS these days...

-Dave.
--
Dave Chinner
david@xxxxxxxxxxxxx