Re: [PATCH] Remove 8 bytes from struct page on 64bit archs

From: Dave Jones (
Date: Sun Jan 06 2002 - 09:44:04 EST

On Sun, 6 Jan 2002, David S. Miller wrote:

> Some of the low end single zone machines (m68k, sparc32, arm etc)
> could benefit from losing ->virtual too.
> Sparc32 has kmapping, so it would need virtual.

I'm curious to see how large the tradeoff is with calculating
virtual in page_address(). The overhead there may be larger than
the win we get from better cacheline footprint in struct page

| Dave Jones.
| SuSE Labs

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