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SubjectRe: [PATCH 18/22] Use allocation flags as an index to the zone watermark
> On Wed, 2009-04-22 at 18:14 +0100, Mel Gorman wrote:
> > Preference of taste really. When I started a conversion to accessors, it
> > changed something recognised to something new that looked uglier to me.
> > Only one place cares about the union enough to access is via an array so
> > why spread it everywhere.
> Personally, I'd say for consistency. Someone looking at both forms
> wouldn't necessarily know that they refer to the same variables unless
> they know about the union.

for just clalification...

AFAIK, C language specification don't gurantee point same value.
compiler can insert pad between struct-member and member, but not insert
into array.

However, all gcc version don't do that. I think. but perhaps I missed
some minor gcc release..

So, I also like Dave's idea. but it only personal feeling.

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