[PATCH 5.4 0/4] fscrypt: prevent creating duplicate encrypted filenames

Backport four commits from v5.11-rc1.  I resolved a conflict in the
first one.  The rest are clean cherry-picks which didn't get picked up
yet because they depend on the first one.

Eric Biggers (4):
  fscrypt: add fscrypt_is_nokey_name()
  ext4: prevent creating duplicate encrypted filenames
  f2fs: prevent creating duplicate encrypted filenames
  ubifs: prevent creating duplicate encrypted filenames

 fs/crypto/hooks.c       | 10 +++++-----
 fs/ext4/namei.c         |  3 +++
 fs/f2fs/f2fs.h          |  2 ++
 fs/ubifs/dir.c          | 17 +++++++++++++----
 include/linux/fscrypt.h | 34 ++++++++++++++++++++++++++++++++++
 5 files changed, 57 insertions(+), 9 deletions(-)

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2.29.2