Re: PTE aging, ptep_test_and_clear_young() and TLB

[Hugh Dickins <hugh@veritas.com>]

On Sun, 18 Apr 2004, Russell King wrote:

> On Sun, Apr 18, 2004 at 01:42:28PM +0100, Russell King wrote:
> > Basically, to be able to use either ptep_to_mm() or ptep_to_address()
> > in asm/pgtable.h, you need to:
> > 
> > 1. remove linux/mm.h from asm-generic/rmap.h
> > 2. somehow work around linux/highmem.h which includes linux/mm.h so
> >    asm-generic/rmap.h can have a definition of kmap_atomic_to_page()
> > 3. remove asm/pgtable.h from linux/mm.h and linux/page-flags.h
> > 
> > I've managed to get so far with that, but the real killer seems to
> > be (2).
> 
> Ok, I've found a solution.

I think you're choosing the wrong moment to get into all of this.

Assuming one or another form of object-based rmap really does go in,
pte_addr_t, ptep_to_mm, include/asm*/rmap.h all disappear.  The
patch for that went to Andrew on Friday, you were on the CC list.

Revisit in a couple of weeks?

Hugh

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