Re: [patch -mm series] ia64 specific /dev/mem handlers

[Dave Hansen]

I was talking with Nigel Cunningham about doing something a little
different from the classic page flag bits when the number of users is
restricted and performance isn't ultra-critical.  Would something like
this work for you, instead of using a real page->flags bit for
PG_cached?

http://marc.theaimsgroup.com/?l=linux-kernel&m=110878103926956&w=2

BTW, they're planning on using two of those dynamic flags for software
suspend, and I'll probably use at least another two in the memory
hotplug code.  

-- Dave

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