[grsec] grsecurity breaks reiser4 compilation

[pageexec at freemail.hu]

On 30 Sep 2010 at 17:18, qwe 64 wrote:

>  Hi, today i tried to compile kernel (2.6.32.23) with reiser4 patch
>  and latest grsecurity, however i got "assignment to read-only
>  structure" error.
>  I found a reason for that.
>  grsecurity patch modifies file include/linux/fs.h , in particular -
>  struct super_operations , adding "const"s there.
>  It causes compilation error in reiser4's reiser4_init_super_data at
>  init_super.c line 399 when it tries to do sbinfo->ops.super =
>  reiser4_super_operations .

the main question to answer is why reiser4 needs to modify this structure
at runtime in the first place as it is a no-go in vanilla linux as well,
it's just not enforced at the compiler level (but try to get it past Al
Viro and you'll see ;). so where's this patch/code exactly and why does
it do this?