On Wed, 2 Mar 2005, Andrew Morton wrote:

> >  This is not relevant since it only deals with file pages.
>
> OK.   And CONFIG_DEBUG_PAGEALLOC?

Its a debug feature that can be fixed if its broken.

> > ptes are only
> >  installed atomically for anonymous memory (if CONFIG_ATOMIC_OPS
> >  is defined).
>
> It's a shame.  A *nice* solution to this problem would address all pte ops
> and wouldn't have such special cases...

Yeah. See my mmu abstraction proposal. This is a solution until we can
address the bigger issues. After that has been worked out the
start/stop become begin/end transaction and the pte_cmpxchg are converted
into  mmu_add/mmu_change/mmu_commit
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