linux-kernel - linux-next: build failure after merge of the vfs-brauner tree

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Date:   Thu, 28 Sep 2023 10:54:43 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Christian Brauner <brauner@...nel.org>,
        Kent Overstreet <kent.overstreet@...ux.dev>
Cc:     Jan Kara <jack@...e.cz>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: linux-next: build failure after merge of the vfs-brauner tree

Hi all,

After merging the vfs-brauner tree, today's linux-next build (x86_64
allmodconfig) failed like this:

fs/bcachefs/super-io.c: In function 'bch2_free_super':
fs/bcachefs/super-io.c:166:17: error: implicit declaration of function 'blkdev_put'; did you mean 'bdi_put'? [-Werror=implicit-function-declaration]
  166 |                 blkdev_put(sb->bdev, sb->holder);
      |                 ^~~~~~~~~~
      |                 bdi_put
fs/bcachefs/super-io.c: In function 'bch2_read_super':
fs/bcachefs/super-io.c:687:20: error: implicit declaration of function 'blkdev_get_by_path'; did you mean 'bdev_open_by_path'? [-Werror=implicit-function-declaration]
  687 |         sb->bdev = blkdev_get_by_path(path, sb->mode, sb->holder, &bch2_sb_handle_bdev_ops);
      |                    ^~~~~~~~~~~~~~~~~~
      |                    bdev_open_by_path
fs/bcachefs/super-io.c:687:18: error: assignment to 'struct block_device *' from 'int' makes pointer from integer without a cast [-Werror=int-conversion]
  687 |         sb->bdev = blkdev_get_by_path(path, sb->mode, sb->holder, &bch2_sb_handle_bdev_ops);
      |                  ^
fs/bcachefs/super-io.c:693:26: error: assignment to 'struct block_device *' from 'int' makes pointer from integer without a cast [-Werror=int-conversion]
  693 |                 sb->bdev = blkdev_get_by_path(path, sb->mode, sb->holder, &bch2_sb_handle_bdev_ops);
      |                          ^
cc1: all warnings being treated as errors

Caused by commit

  953863a5a2ff ("block: Remove blkdev_get_by_*() functions")

interacting with commit(s) from the bcachefs tree.

I would have reverted that commit for today, except I used the old
vfs-brauner tree due to another build failure.  Can we just delay this
one commit until after bcachefs has been converted (and any other
references that may be added are fixed)?

-- 
Cheers,
Stephen Rothwell

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