On Sun, Jan 06, 2002 at 11:39:14PM +1100, Anton Blanchard wrote:
> It seems shortening struct page is all the rage at the moment and I
> didnt want to be left out. On some 64bit architectures (sparc64 and
> ppc64 for example) all memory is allocated in the DMA zone. Therefore
> there is no reason to waste 8 bytes per page when every page points to
> the same zone!
Very true. I devised something to address this that appears to work on
multiple architectures already by folding ->zone into ->flags, which
could be useful. (Dave Jones recommended I just let arch maintainers
for things other than i386 mess with page_address() for other arches.)
OTOH, I'm more interested in getting it trimmed down than getting credit.
Cheers,
Bill
P.S.:
My i386 version, which makes ->virtual conditional on CONFIG_HIGHMEM as
well, is at:
ftp://ftp.kernel.org/pub/linux/kernel/people/wli/vm/struct_page/struct_page-2.4.17-rc2
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This archive was generated by hypermail 2b29 : Mon Jan 07 2002 - 21:00:30 EST