2024-03-17 22:18:12

by Stephen Rothwell

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Subject: linux-next: build failure after merge of the btrfs-fixes tree

Hi all,

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

fs/btrfs/volumes.c: In function 'btrfs_scan_one_device':
fs/btrfs/volumes.c:1413:55: error: 'bdev_handle' undeclared (first use in this function)
1413 | if (btrfs_skip_registration(disk_super, path, bdev_handle->bdev->bd_dev,
| ^~~~~~~~~~~
fs/btrfs/volumes.c:1413:55: note: each undeclared identifier is reported only once for each function it appears in

Caused by commit

cc019bc0d55b ("btrfs: do not skip re-registration for the mounted device")

I have used the btrfs-fixes tree from next-20240315 for today.

This is actually caused by an interaction with commit

9ae061cf2a46 ("btrfs: port device access to file")

which has been in Linus' tree since March 12 (and linux-next since Feb 26).
--
Cheers,
Stephen Rothwell


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2024-03-18 04:51:28

by Anand Jain

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Subject: Re: linux-next: build failure after merge of the btrfs-fixes tree



On 3/18/24 03:47, Stephen Rothwell wrote:
> Hi all,
>
> After merging the btrfs-fixes tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
>
> fs/btrfs/volumes.c: In function 'btrfs_scan_one_device':
> fs/btrfs/volumes.c:1413:55: error: 'bdev_handle' undeclared (first use in this function)
> 1413 | if (btrfs_skip_registration(disk_super, path, bdev_handle->bdev->bd_dev,
> | ^~~~~~~~~~~
> fs/btrfs/volumes.c:1413:55: note: each undeclared identifier is reported only once for each function it appears in
>
> Caused by commit
>
> cc019bc0d55b ("btrfs: do not skip re-registration for the mounted device")
>
> I have used the btrfs-fixes tree from next-20240315 for today.
>


> This is actually caused by an interaction with commit
>
> 9ae061cf2a46 ("btrfs: port device access to file")
>

Ah, unaware of this change. Thanks for the report.
A new fix, built on top of this change, has now been sent out.

As the Linux-next branch no longer has the commit cc019bc0d55b,
I've sent out the entire patch again.

https://lore.kernel.org/linux-btrfs/57a63f9905549f22618a85991b775fba76104412.1710732026.git.anand.jain@oracle.com/


Thanks, Anand

> which has been in Linus' tree since March 12 (and linux-next since Feb 26).

2024-03-18 17:38:30

by David Sterba

[permalink] [raw]
Subject: Re: linux-next: build failure after merge of the btrfs-fixes tree

On Mon, Mar 18, 2024 at 09:17:55AM +1100, Stephen Rothwell wrote:
> Hi all,
>
> After merging the btrfs-fixes tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
>
> fs/btrfs/volumes.c: In function 'btrfs_scan_one_device':
> fs/btrfs/volumes.c:1413:55: error: 'bdev_handle' undeclared (first use in this function)
> 1413 | if (btrfs_skip_registration(disk_super, path, bdev_handle->bdev->bd_dev,
> | ^~~~~~~~~~~
> fs/btrfs/volumes.c:1413:55: note: each undeclared identifier is reported only once for each function it appears in
>
> Caused by commit
>
> cc019bc0d55b ("btrfs: do not skip re-registration for the mounted device")
>
> I have used the btrfs-fixes tree from next-20240315 for today.
>
> This is actually caused by an interaction with commit
>
> 9ae061cf2a46 ("btrfs: port device access to file")
>
> which has been in Linus' tree since March 12 (and linux-next since Feb 26).

I would really appreciate if all infrastructure changes to btrfs code
have CC:linux-btrfs@, the whole series "Open block devices as files" has
never been CCed so the build breakage is noticed only by accident. Also
I wonder why I have to repeatedly ask for that and why people think that
doing broad changes to code maintained by somebody else is ok.

There are 26 patches in linux-next intersecting fs/btrfs most of which I
see for the first time now. I don't have time to read fsdevel@ regularly
and act rather on events (i.e. CC or mails).

VFS is in the center of many other subsystems I understand that adding
the CC: manually is not feasible but scripting "if $path add CC:$subsys"
should be doable, namely when it's not just one-time job. Please try to
find some middle ground between efforts and patch workflow sanity.
Thanks for understanding.

2024-03-18 19:06:02

by David Sterba

[permalink] [raw]
Subject: Re: linux-next: build failure after merge of the btrfs-fixes tree

On Mon, Mar 18, 2024 at 09:17:55AM +1100, Stephen Rothwell wrote:
> Hi all,
>
> After merging the btrfs-fixes tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
>
> fs/btrfs/volumes.c: In function 'btrfs_scan_one_device':
> fs/btrfs/volumes.c:1413:55: error: 'bdev_handle' undeclared (first use in this function)
> 1413 | if (btrfs_skip_registration(disk_super, path, bdev_handle->bdev->bd_dev,
> | ^~~~~~~~~~~
> fs/btrfs/volumes.c:1413:55: note: each undeclared identifier is reported only once for each function it appears in

I've updated the for-next snapshot so it contains the updated version
that is based on top of the required changes. The same patch will be
also sent for merge.