In NOMMU mode, the FRV segment handling is broken because KERNEL_DS ==
USER_DS. This causes tests of the following sort:
/* don't pin down non-user-based iovecs */
if (segment_eq(get_fs(), KERNEL_DS))
return NULL;
to malfunction.
To fix this, make USER_DS the top of RAM instead of the top of the non-IO
address space, and make KERNEL_DS one more than the top of the non-IO
address space.
Also get rid of FRV's __addr_ok() as nothing uses it.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Howells
08dc179b9b