Hello,

I am working on a patch that removes the old limit of NGROUPS.

In doing so, I am checking everything that references NGROUPS.  One
such place is in arch/s390x/kernel/linux32.c.

I notice these things:
* s390x defines __kernel_old_gid_t to __kernel_gid_t (unsigned int)
* s390x has a sys32_getgroups16() which looks JUST LIKE uid16.c
sys_getgroups16
* s390x does not define CONFIG_UID16, but seems to need it

It seems to me that if we do:
* s390x defines CONFIG_UID16
* typedef __kernel_old_gid_t to u16
* get rid of all the sys32_*16 stuff and just call the uid16.c function


We could save a bit of duplicated code.  Patches that remove code are
good, right?

Obviouscly, I can't test it.  Please - comments?  Shoot me down if I 
have missed something.  What I know of s390 can fit inside a thimble.

2.4.x patch attached, 2.5.x to follow, if this is ok (whether it goes 
into 2.4.x or not, I did this version first)

Tim

-- 
Tim Hockin
Systems Software Engineer
Sun Microsystems, Linux Kernel Engineering
thockin@sun.com