[Patch 04/18] include/linux/logfs.h
David Woodhouse
dwmw2 at infradead.org
Tue Jun 5 11:53:55 EDT 2007
On Tue, 2007-06-05 at 17:49 +0200, Segher Boessenkool wrote:
> > It would be better if GCC had a 'nopadding' attribute which gave us
> > what we need without the _extra_ implications about alignment.
>
> That's impossible; removing the padding from a struct
> _will_ make accesses to its members unaligned (think
> about arrays of that struct).
It _might_ make accesses to _some_ of its members unaligned.
That's why I said 'without the __EXTRA__ implications about alignment'.
Obviously the lack of padding has its own implications, but we don't
necessarily need to assume that the struct may be at arbitrary
locations.
--
dwmw2
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