[RFC PATCH 0/6] KEYS: From assoc_array to rhashtable migration

As a constant source of LLM attention this must be done.

This patch set started from Claude Opus 5.5 generated code that I got from
Linus. I tweaked what I got over one day scoping it into a proper kernel
patch, fixing some minor bugs in the core change, improved the use of
types and basic stuff like that.

This felt a good chance to try out LLM in the kernel context and I used
Gemini Flash 3.8 to seek for out-of-scope bugs intersecting with the
core change.

Since this patch set is marked as RFC, I did not yet cut out-of-context
bug fixes out, so for most part consider them as white noise. This applies
to patches 1-3.

Jarkko Sakkinen (6):
  keys: prevent quota overflow and widen quotalen and datalen to 32 bits
  keys: reclaim link quota during keyring garbage collection
  keys: verify key identity on unlink and move
  keys: Add keyring_is_empty() for {fs,dm}-verity
  KEYS: Replace assoc_array with struct keyring_index
  lib: Remove unused assoc_array

 Documentation/core-api/assoc_array.rst        |  564 ------
 Documentation/core-api/index.rst              |    1 -
 .../zh_CN/core-api/assoc_array.rst            |  473 -----
 .../translations/zh_CN/core-api/index.rst     |    1 -
 drivers/md/dm-verity-verify-sig.c             |    2 +-
 fs/smb/client/cifsacl.c                       |    6 +-
 fs/verity/signature.c                         |    2 +-
 include/keys/keyring-type.h                   |    1 -
 include/linux/assoc_array.h                   |   88 -
 include/linux/assoc_array_priv.h              |  178 --
 include/linux/key.h                           |   24 +-
 lib/Kconfig                                   |   14 -
 lib/Makefile                                  |    1 -
 lib/assoc_array.c                             | 1724 -----------------
 security/keys/Kconfig                         |    1 -
 security/keys/internal.h                      |   10 +-
 security/keys/key.c                           |   33 +-
 security/keys/keyctl.c                        |    9 +-
 security/keys/keyring.c                       |  887 ++++-----
 security/keys/request_key.c                   |    2 +-
 .../dm-verity/test-dm-verity-keyring.sh       |    2 +-
 21 files changed, 478 insertions(+), 3545 deletions(-)
 delete mode 100644 Documentation/core-api/assoc_array.rst
 delete mode 100644 Documentation/translations/zh_CN/core-api/assoc_array.rst
 delete mode 100644 include/linux/assoc_array.h
 delete mode 100644 include/linux/assoc_array_priv.h
 delete mode 100644 lib/assoc_array.c

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2.47.3