linux-kernel - [PATCH v2 0/4] Make UTF-8 encoding loadable

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Message-Id: <20210318133305.316564-1-shreeya.patel@collabora.com>
Date:   Thu, 18 Mar 2021 19:03:01 +0530
From:   Shreeya Patel <shreeya.patel@...labora.com>
To:     krisman@...labora.com, jaegeuk@...nel.org, yuchao0@...wei.com,
        tytso@....edu, adilger.kernel@...ger.ca, drosen@...gle.com,
        ebiggers@...gle.com
Cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        kernel@...labora.com, andre.almeida@...labora.com,
        Shreeya Patel <shreeya.patel@...labora.com>
Subject: [PATCH v2 0/4] Make UTF-8 encoding loadable

utf8data.h_shipped has a large database table which is an auto-generated
decodification trie for the unicode normalization functions and it is not
necessary to carry this large table in the kernel.
Goal is to make UTF-8 encoding loadable by converting it into a module
and adding a layer between the filesystems and the utf8 module which will
load the module whenever any filesystem that needs unicode is mounted.
Unicode is the subsystem and utf8 is a charachter encoding for the
subsystem, hence first two patches in the series are renaming functions
and file name to unicode for better understanding the difference between
UTF-8 module and unicode layer.
3rd patch resolves the warning reported by kernel test robot.
Last patch in the series adds the layer and utf8 module.

---
Changes in v2
  - Remove the duplicate file from the last patch.
  - Make the wrapper functions inline.
  - Remove msleep and use try_module_get() and module_put()
    for ensuring that module is loaded correctly and also
    doesn't get unloaded while in use.
  - Resolve the warning reported by kernel test robot.
  - Resolve all the checkpatch.pl warnings.

Shreeya Patel (4):
  fs: unicode: Rename function names from utf8 to unicode
  fs: unicode: Rename utf8-core file to unicode-core
  fs: unicode: Use strscpy() instead of strncpy()
  fs: unicode: Add utf8 module and a unicode layer

 fs/ext4/hash.c                        |  2 +-
 fs/ext4/namei.c                       | 12 ++--
 fs/ext4/super.c                       |  6 +-
 fs/f2fs/dir.c                         | 12 ++--
 fs/f2fs/super.c                       |  6 +-
 fs/libfs.c                            |  6 +-
 fs/unicode/Kconfig                    | 11 +++-
 fs/unicode/Makefile                   |  5 +-
 fs/unicode/unicode-core.c             | 60 ++++++++++++++++++++
 fs/unicode/utf8-selftest.c            |  8 +--
 fs/unicode/{utf8-core.c => utf8mod.c} | 80 +++++++++++++++------------
 include/linux/unicode.h               | 77 ++++++++++++++++++++------
 12 files changed, 206 insertions(+), 79 deletions(-)
 create mode 100644 fs/unicode/unicode-core.c
 rename fs/unicode/{utf8-core.c => utf8mod.c} (68%)

-- 
2.30.1