tree 3413bbef3bcaa444bb051f7a9c9de9579d0e0374
parent 0414855fdc4a40da05221fc6062cccbc0c30f169
author Heiko Carstens <heiko.carstens@de.ibm.com> 1393839843 +0100
committer Heiko Carstens <heiko.carstens@de.ibm.com> 1393920333 +0100

compat: let architectures define __ARCH_WANT_COMPAT_SYS_GETDENTS64

For architecture dependent compat syscalls in common code an architecture
must define something like __ARCH_WANT_<WHATEVER> if it wants to use the
code.
This however is not true for compat_sys_getdents64 for which architectures
must define __ARCH_OMIT_COMPAT_SYS_GETDENTS64 if they do not want the code.

This leads to the situation where all architectures, except mips, get the
compat code but only x86_64, arm64 and the generic syscall architectures
actually use it.

So invert the logic, so that architectures actively must do something to
get the compat code.

This way a couple of architectures get rid of otherwise dead code.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>