Simplify the code and eliminate per-encryption-op dynamic memory
allocations by switching from crypto_skcipher to crypto_sync_skcipher,
and from dynamic request allocation to SYNC_SKCIPHER_REQUEST_ON_STACK.

Previously, this change would have made the x86 accelerated AES code no
longer be used, which would have been very bad.  However, I fixed that
in 6.16.  So we can make this simplification now.

This patchset applies to fscrypt/for-next.  The base-commit (listed
below) can be found in next-20250708

Eric Biggers (3):
  fscrypt: Don't use asynchronous CryptoAPI algorithms
  fscrypt: Drop FORBID_WEAK_KEYS flag for AES-ECB
  fscrypt: Switch to sync_skcipher and on-stack requests

 fs/crypto/crypto.c          | 27 ++++++----------
 fs/crypto/fname.c           | 63 +++++++++++++------------------------
 fs/crypto/fscrypt_private.h |  7 +++--
 fs/crypto/keysetup.c        | 23 +++++++-------
 fs/crypto/keysetup_v1.c     | 56 +++++++++++++++------------------
 5 files changed, 71 insertions(+), 105 deletions(-)


base-commit: b41c1d8d07906786c60893980d52688f31d114a6
-- 
2.50.0