[00/13] add the latest exfat driver

Message

Namjae Jeon Nov. 13, 2019, 8:17 a.m. UTC

This adds the latest Samsung exfat driver to fs/exfat. This is an
implementation of the Microsoft exFAT specification. Previous versions
of this shipped with millions of Android phones, an a random previous
snaphot has been merged in drivers/staging/.

Compared to the sdfat driver shipped on the phones the following changes
have been made:

 - the support for vfat has been removed as that is already supported
   by fs/fat
 - driver has been renamed to exfat
 - the code has been refactored and clean up to fully integrate into
   the upstream Linux version and follow the Linux coding style
 - metadata operations like create, lookup and readdir have been further
   optimized
 - various major and minor bugs have been fixed

We plan to treat this version as the future upstream for the code base
once merged, and all new features and bug fixes will go upstream first.

Namjae Jeon (13):
  exfat: add in-memory structure and headers
  exfat: add super block operations
  exfat: add inode operations
  exfat: add directory operations
  exfat: add file operations
  exfat: add exfat entry operations
  exfat: add bitmap operations
  exfat: add exfat cache
  exfat: add misc operations
  exfat: add nls operations
  exfat: add Kconfig and Makefile
  exfat: add exfat in fs/Kconfig and fs/Makefile
  MAINTAINERS: add exfat filesystem

 MAINTAINERS          |    7 +
 fs/Kconfig           |    3 +-
 fs/Makefile          |    1 +
 fs/exfat/Kconfig     |   21 +
 fs/exfat/Makefile    |    8 +
 fs/exfat/balloc.c    |  267 ++++++++
 fs/exfat/cache.c     |  325 +++++++++
 fs/exfat/dir.c       | 1338 +++++++++++++++++++++++++++++++++++++
 fs/exfat/exfat_fs.h  |  533 +++++++++++++++
 fs/exfat/exfat_raw.h |  190 ++++++
 fs/exfat/fatent.c    |  475 ++++++++++++++
 fs/exfat/file.c      |  346 ++++++++++
 fs/exfat/inode.c     |  691 +++++++++++++++++++
 fs/exfat/misc.c      |  247 +++++++
 fs/exfat/namei.c     | 1492 ++++++++++++++++++++++++++++++++++++++++++
 fs/exfat/nls.c       |  817 +++++++++++++++++++++++
 fs/exfat/super.c     |  752 +++++++++++++++++++++
 17 files changed, 7512 insertions(+), 1 deletion(-)
 create mode 100644 fs/exfat/Kconfig
 create mode 100644 fs/exfat/Makefile
 create mode 100644 fs/exfat/balloc.c
 create mode 100644 fs/exfat/cache.c
 create mode 100644 fs/exfat/dir.c
 create mode 100644 fs/exfat/exfat_fs.h
 create mode 100644 fs/exfat/exfat_raw.h
 create mode 100644 fs/exfat/fatent.c
 create mode 100644 fs/exfat/file.c
 create mode 100644 fs/exfat/inode.c
 create mode 100644 fs/exfat/misc.c
 create mode 100644 fs/exfat/namei.c
 create mode 100644 fs/exfat/nls.c
 create mode 100644 fs/exfat/super.c

Comments

Valdis Klētnieks Nov. 13, 2019, 6:48 p.m. UTC | #1

On Wed, 13 Nov 2019 03:17:47 -0500, Namjae Jeon said:
> This adds the latest Samsung exfat driver to fs/exfat. This is an
> implementation of the Microsoft exFAT specification. Previous versions
> of this shipped with millions of Android phones, an a random previous
> snaphot has been merged in drivers/staging/.
>
> Compared to the sdfat driver shipped on the phones the following changes
> have been made:
>
>  - the support for vfat has been removed as that is already supported
>    by fs/fat
>  - driver has been renamed to exfat
>  - the code has been refactored and clean up to fully integrate into
>    the upstream Linux version and follow the Linux coding style
>  - metadata operations like create, lookup and readdir have been further
>    optimized
>  - various major and minor bugs have been fixed
>
> We plan to treat this version as the future upstream for the code base
> once merged, and all new features and bug fixes will go upstream first.

For the record, I'm totally OK with this and glad to see more up-to-date code
than the codebase I was working from.