[PATCH 4.19 0/4] fscrypt: prevent creating duplicate encrypted filenames

Backport four commits from v5.11-rc1. I resolved conflicts in the first two.

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_notsupp.h | 5 +++++ include/linux/fscrypt_supp.h | 29 +++++++++++++++++++++++++++++ 6 files changed, 57 insertions(+), 9 deletions(-)