Merge remote-tracking branch 'aosp/upstream-f2fs-stable-linux-5.15.y' into android14-5.15

* aosp/upstream-f2fs-stable-linux-5.15.y:
  fscrypt: destroy keyring after security_sb_delete()
  fscrypt: optimize fscrypt_initialize()
  fscrypt: use WARN_ON_ONCE instead of WARN_ON
  fscrypt: new helper function - fscrypt_prepare_lookup_partial()
  fscrypt: check for NULL keyring in fscrypt_put_master_key_activeref()
  fscrypt: improve fscrypt_destroy_keyring() documentation

Bug: 273795759
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Change-Id: Iae53ebbdc231a66146ed39c2d83622233386a526