2014-01-15 03:53:09

by Stephen Rothwell

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Subject: linux-next: build failure after merge of the device-mapper tree

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Hi all,

After merging the device-mapper tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

ERROR: ".dm_bufio_get_device_size" [drivers/md/dm-snapshot.ko] undefined!
ERROR: ".dm_bufio_release" [drivers/md/dm-snapshot.ko] undefined!
ERROR: ".dm_bufio_client_destroy" [drivers/md/dm-snapshot.ko] undefined!
ERROR: ".dm_bufio_prefetch" [drivers/md/dm-snapshot.ko] undefined!
ERROR: ".dm_bufio_set_minimum_buffers" [drivers/md/dm-snapshot.ko] undefined!
ERROR: ".dm_bufio_forget" [drivers/md/dm-snapshot.ko] undefined!
ERROR: ".dm_bufio_client_create" [drivers/md/dm-snapshot.ko] undefined!
ERROR: ".dm_bufio_read" [drivers/md/dm-snapshot.ko] undefined!

Presumably caused by commit b41bf7440bcf ("dm snapshot: use dm-bufio").

I have used the device-mapper tree from next-20140114 for today.

--
Cheers,
Stephen Rothwell [email protected]

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2014-01-15 04:30:53

by Mike Snitzer

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Subject: Re: linux-next: build failure after merge of the device-mapper tree

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On Tue, Jan 14 2014 at 10:52pm -0500,
Stephen Rothwell <[email protected]> wrote:

> Hi all,
>
> After merging the device-mapper tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
>
> ERROR: ".dm_bufio_get_device_size" [drivers/md/dm-snapshot.ko] undefined!
> ERROR: ".dm_bufio_release" [drivers/md/dm-snapshot.ko] undefined!
> ERROR: ".dm_bufio_client_destroy" [drivers/md/dm-snapshot.ko] undefined!
> ERROR: ".dm_bufio_prefetch" [drivers/md/dm-snapshot.ko] undefined!
> ERROR: ".dm_bufio_set_minimum_buffers" [drivers/md/dm-snapshot.ko] undefined!
> ERROR: ".dm_bufio_forget" [drivers/md/dm-snapshot.ko] undefined!
> ERROR: ".dm_bufio_client_create" [drivers/md/dm-snapshot.ko] undefined!
> ERROR: ".dm_bufio_read" [drivers/md/dm-snapshot.ko] undefined!
>
> Presumably caused by commit b41bf7440bcf ("dm snapshot: use dm-bufio").

Hi Stephen,

That commit was missing a Kconfig update to have DM_SNAPSHOT select
DM_BUFIO. I've rebased the "dm snapshot: use dm-bufio" commit to include
the Kconfig change and pushed to 'for-next'.

Thanks,
Mike