arch/mips (and arch/alpha) pmap.c dependency on SYSVSHM

[Paul Goyette <paul%vps1.whooppee.com@localhost>]

Following up on my earlier modularization of the SYSV IPC code, I have
discovered that mips's pmap.c includes some SYSVSHM size in the calcs
for the system map sizes.  At line 516 in arch/mips/mips/pmap.c we have

#ifdef SYSVSHM
        Sysmapsize += shminfo.shmall;
#endif

In arch/alpha/alpha/pmap.c we have at line 781

#ifdef SYSVSHM
        lev3mapsize += shminfo.shmall;
#endif


Since SYSVSHM could be loaded as a module, rather than being built-in
to the kernel, would it be reasonable to remove these #ifdef's and
thus always include the increment to the map sizes?

It seems that noone is currently using modular sysv_ipc on either mips
or alpha, since otherwize I would have expected some fallout from an
incorrect sizing of the system map.  Including the above code
unconditionally should not have a significant impact on kernel size
even for those kernels that don't include the SYSVSHM code.


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