Merge tag 'repair-tempfiles-6.10_2024-04-15' of https://git.kernel.org/pub/scm/linux...

xfs: create temporary files for online repair

As mentioned earlier, the repair strategy for file-based metadata is to
build a new copy in a temporary file and swap the file fork mappings
with the metadata inode.  We've built the atomic extent swap facility,
so now we need to build a facility for handling private temporary files.

The first step is to teach the filesystem to ignore the temporary files.
We'll mark them as PRIVATE in the VFS so that the kernel security
modules will leave it alone.  The second step is to add the online
repair code the ability to create a temporary file and reap extents from
the temporary file after the extent swap.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
* tag 'repair-tempfiles-6.10_2024-04-15' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux:
  xfs: add the ability to reap entire inode forks
  xfs: refactor live buffer invalidation for repairs
  xfs: create temporary files and directories for online repair
  xfs: hide private inodes from bulkstat and handle functions