Re: [patch 4/6] lightweight robust futexes: compat

[Paul Jackson <pj@sgi.com>]

I think this broke the 2.6.16-rc4-mm1 CONFIG_FUTEX build for all but
archs:

  powerpc sparc64 x86_64

In the added file kernel/futex_compat.c, routine
compat_sys_get_robust_list() the lines:

+       if (put_user(sizeof(*head), len_ptr))
+               return -EFAULT;
+       return put_user(ptr_to_compat(head), head_ptr);

use a ptr_to_compat() routine that only seems to be defined
for the above arch's.

My ia64 sn2_defconfig build final link is failing:

kernel/built-in.o(.text+0x54782): In function `compat_sys_get_robust_list':
kernel/futex_compat.c:92: undefined reference to `ptr_to_compat'


-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@sgi.com> 1.925.600.0401
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