Re: [PATCH 1/6] freepgt: free_pgtables use vma list

[Nick Piggin]

Nick Piggin wrote:
> Hugh Dickins wrote:
>
> > And the range to sparc64's flush_tlb_pgtables?  It's less clear to me
> > now that we need to do more than is done here - every PMD_SIZE ever
> > occupied will be flushed, do we really have to flush every PGDIR_SIZE
> > ever partially occupied?  A shame to complicate it unnecessarily.
>
>
> It looks like sparc64 is the only user of this, so it is up to
> you Dave.

Oh - one other question too. Doing the unmap and page table freeing in
the same pass will put freed pagecache pages in the same mmu_gather as
the freed page table pages. This looks like it may be a problem for
sparc64?

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