[GIT PULL for v6.11] vfs casefold

[Christian Brauner]

Hey Linus,

/* Summary */
This contains some work to simplify the handling of casefolded names:

- Simplify the handling of casefolded names in f2fs and ext4 by keeping the
  names as a qstr to avoiding unnecessary conversions.

- Introduce a new generic_ci_match() libfs case-insensitive lookup helper and
  use it in both f2fs and ext4 allowing to remove the filesystem specific
  implementations.

- Remove a bunch of ifdefs by making the unicode built checks part of the code
  flow.

/* Testing */
clang: Debian clang version 16.0.6 (26)
gcc: (Debian 13.2.0-24)

All patches are based on v6.10-rc1 and have been sitting in linux-next.
No build failures or warnings were observed.

/* Conflicts */
No known conflicts.

The following changes since commit 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0:

  Linux 6.10-rc1 (2024-05-26 15:20:12 -0700)

are available in the Git repository at:

  git@xxxxxxxxxxxxxxxxxxx:pub/scm/linux/kernel/git/vfs/vfs tags/vfs-6.11.casefold

for you to fetch changes up to 28add38d545f445f01eec844b85eed4593c31733:

  f2fs: Move CONFIG_UNICODE defguards into the code flow (2024-06-07 17:00:45 +0200)

Please consider pulling these changes from the signed vfs-6.11.casefold tag.

Thanks!
Christian

----------------------------------------------------------------
vfs-6.11.casefold

----------------------------------------------------------------
Gabriel Krisman Bertazi (7):
      ext4: Simplify the handling of cached casefolded names
      f2fs: Simplify the handling of cached casefolded names
      libfs: Introduce case-insensitive string comparison helper
      ext4: Reuse generic_ci_match for ci comparisons
      f2fs: Reuse generic_ci_match for ci comparisons
      ext4: Move CONFIG_UNICODE defguards into the code flow
      f2fs: Move CONFIG_UNICODE defguards into the code flow

 fs/ext4/crypto.c   |  10 +----
 fs/ext4/ext4.h     |  35 +++++++++------
 fs/ext4/namei.c    | 122 ++++++++++++++++-------------------------------------
 fs/ext4/super.c    |   4 +-
 fs/f2fs/dir.c      | 105 ++++++++++++++-------------------------------
 fs/f2fs/f2fs.h     |  16 ++++++-
 fs/f2fs/namei.c    |  10 ++---
 fs/f2fs/recovery.c |   9 +---
 fs/f2fs/super.c    |   8 ++--
 fs/libfs.c         |  74 ++++++++++++++++++++++++++++++++
 include/linux/fs.h |   4 ++
 11 files changed, 195 insertions(+), 202 deletions(-)