[RFC PATCH 0/4] KEYS: sanitize the garbage collector behavior

[Jarkko Sakkinen]

1. Remove key_type_dead and replace it with the regular module semantics.
2. Replace variable size workqueue items with fixed-size 64 key chunks.

The first change has user space visible effect: rmmod semantics will change
from always succeeding into returning -EBUSY when keys or restrictions have
the LKM pinned.

Jarkko Sakkinen (4):
  KEYS: trusted: Disable sysfs bind attributes for TEE driver
  KEYS: Pin the backing module for struct key_type
  KEYS: Remove key_type_dead
  KEYS: key_garbage_collector(): process in chunks

 include/linux/key-type.h                 |   6 +-
 security/keys/gc.c                       | 249 ++++++++---------------
 security/keys/internal.h                 |   7 +-
 security/keys/key.c                      |  46 +++--
 security/keys/keyring.c                  |  84 +++-----
 security/keys/trusted-keys/trusted_tee.c |   1 +
 6 files changed, 148 insertions(+), 245 deletions(-)

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2.47.3