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SubjectRe: share COMPATIBLE_IOCTL()s across architectures
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   From: Pavel Machek <pavel@suse.cz>
Date: Thu, 20 Mar 2003 00:21:57 +0100

This patche moves common COMPATIBLE_IOCTLs to
include/linux/compat_ioctl.h, enabling pretty nice cleanups:

Please be careful. For anything non-trivial there can be major
differences between compat layers.
I say this now because eventually I want this compat stuff
to support multiple-compilations, using some COMPAT_NAME(foo)
macro scheme and some Makefile hackery.

This would allow, for example, x86_64 to have an x86_32 and
x86_32_sysv compat layer in one build. So for example in this case
fs/compat.c would be built twice, once with x86_32 compat types
and once with x86_32_sysv types.

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