Re: -mm merge plans for 2.6.21

[Ralf Baechle <ralf@linux-mips.org>]

On Sun, Feb 11, 2007 at 04:33:41PM +0100, David Woodhouse wrote:

> On Sat, 2007-02-10 at 21:34 +0000, Ralf Baechle wrote:
> > Unfortunately struct epoll_event contains a gap so it bets on identical
> > padding rules between native and compat ABI and anyway, padding is wasted
> > space so the struct members should have been swapped when this structure
> > was created.  Oh well, too late. 
> 
> Indeed. That was the example I was thinking of when I suggested the "no
> new syscalls without _simultaneous_ compat version" rule.

The need for a compat ABI is not always obvious.

  Ralf