Due to different structure alignment rules in the ABI between ia32 and
ia64, certain members of the dirent structure are not guaranteed to be 8
byte aligned on ia64.  This requires a compat wrapper around these 32 bit
system calls.  Other architectures may or may not have the problem,
depending on the alignment rules.

This was observed by running /emul/ia32-linux/bin/ls on 2.6.6 which produces
kernel mode unaligned faults.

Original patch by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Gordon Jin <gordon.jin@intel.com>
Signed-off-by: Arun Sharma <arun.sharma@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>