The second parameter of the sys_ipc system wrapper on ppc64, s390-64 and
sparc64 is an "int".  sys_shmget gets called with this 32 bit value as the
size parameter.  This limits the maximum shared memory segment on these
three architectures to 2GB.  To fix this the second parameter is declared
as an "unsigned long" and is then casted to the type required by the The
same int vs.  unsigned long bug is fixed for sys_msgsnd and sys_msgrcv as
well.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>