linux-ext4 - [PATCH 0/5] Clean up the case-insenstive lookup path

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Message-Id: <20220322030004.148560-1-krisman@collabora.com>
Date:   Mon, 21 Mar 2022 22:59:59 -0400
From:   Gabriel Krisman Bertazi <krisman@...labora.com>
To:     tytso@....edu
Cc:     ebiggers@...nel.org, jaegeuk@...nel.org,
        linux-ext4@...r.kernel.org,
        Gabriel Krisman Bertazi <krisman@...labora.com>,
        kernel@...labora.com
Subject: [PATCH 0/5] Clean up the case-insenstive lookup path

The case-insensitive implementations in f2fs and ext4 have quite a bit
of duplicated code.  This series simplifies the ext4 version, with the
goal (not completed) of extracting ext4_ci_compare into a helper library
that can be used by both filesystems.

While there, I noticed we can leverage the utf8 functions to detect
encoded names that are corrupted in the filesystem. The final patch
adds an ext4 error on that scenario, to mark the filesystem as
corrupted.

This series survived passes of xfstests -g quick.

Gabriel Krisman Bertazi (5):
  ext4: Match the f2fs ci_compare implementation
  ext4: Simplify the handling of chached insensitive names
  ext4: Implement ci comparison using fscrypt_name
  ext4: Simplify hash check on ext4_match
  ext4: Log error when lookup of encoded dentry fails

 fs/ext4/ext4.h          |   2 +-
 fs/ext4/namei.c         | 110 +++++++++++++++++++++++-----------------
 include/linux/fscrypt.h |   4 ++
 3 files changed, 68 insertions(+), 48 deletions(-)

-- 
2.35.1