Re: [PATCH 1/5] freepgt: free_pgtables use vma list

Nick Piggin
2005-03-22T04:20:25Z

On Mon, 2005-03-21 at 15:02 -0800, David S. Miller wrote:

> Anyways, there's the full analysis, what do you make
> of this Hugh? :-)

Impressive, and my name isn't even Hugh.

Question, Dave: flush_tlb_pgtables after Hugh's patch is also
possibly not being called with enough range to cover all page
tables that have been freed.

For example, you may have a single page (start,end) address range
to free, but if this is enclosed by a large enough (floor,ceiling)
then it may free an entire pgd entry.

I assume the intention of the API would be to provide the full
pgd width in that case?