git: sys/gnu/vfs/ext2fs: Cleanup __KERNEL__ related macros

[Tomohiro Kusumi]

commit 91d54c3f56dbfbf21f07f3eb5e0218525207e1c9
Author: Tomohiro Kusumi <kusumi.tomohiro at gmail.com>
Date:   Sat May 30 19:19:35 2015 +0900

    sys/gnu/vfs/ext2fs: Cleanup __KERNEL__ related macros
    
    - Add comments on EXT2_XXX(s) macros. These macros on dfly ext2 happen
      to be tricky and confusing as their arg types are not consistent.
      These macros are taken from e2fsprogs header (rather than macros of
      the same name in Linux kernel header) and made to work as a part of
      kernel filesystem code.
    
    - Remove unused __KERNEL__ version of EXT2_XXX(s) macros. These are not
      compiled on dfly (and most of them result compile error if enabled on
      dfly ext2) since __KERNEL__ is designed to be Linux kernel specific
      code while dfly ext2 is made to work with userspace version of macros
      taken from e2fsprogs as mentioned above. Moreover, some of these
      __KERNEL__ version of macros are already deprecated on Linux kernel
      and have been removed from the e2fsprogs header accordingly, so there
      is no reason to keep it here as well.
    
    - Compiling e2fsprogs does not require ext2_fs.h installed under
      /usr/include/... as it has its own copy of the ext2_fs.h in its source
      code that the dfly ext2 originally referred to.
    
    - This commit makes no binary difference. Also this commit does not
      affect external userspace programs.
    
    - (Note that dfly's ext2 seems to be broken currently)

Summary of changes:
 sys/gnu/vfs/ext2fs/ext2_fs.h | 56 +++++++++++++++++++++++++-------------------
 1 file changed, 32 insertions(+), 24 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/91d54c3f56dbfbf21f07f3eb5e0218525207e1c9


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