Re: [PATCH v6 4/7] mm: refactoring TLB gathering API

[Peter Zijlstra]

On Tue, Aug 01, 2017 at 05:08:15PM -0700, Nadav Amit wrote:
> From: Minchan Kim <minchan@xxxxxxxxxx>
> 
> This patch is a preparatory patch for solving race problems caused by
> TLB batch.  For that, we will increase/decrease TLB flush pending count
> of mm_struct whenever tlb_[gather|finish]_mmu is called.
> 
> Before making it simple, this patch separates architecture specific
> part and rename it to arch_tlb_[gather|finish]_mmu and generic part
> just calls it.

I absolutely hate this. We should unify this stuff, not diverge it
further.