Re: [PATCH] mm: Always sanity check anon_vma first for per-vma locks

[Matthew Wilcox]

On Thu, Apr 11, 2024 at 05:12:02PM -0400, Peter Xu wrote:
> The question is whether that's intended to make it as complicated.  For
> example, why don't we check anon_vma for anonymous too later when prepare
> anon_vma, however we do it late for file memory.  AFAICT there's nothing
> special with file memory in this case.

Yes, it's absolutely intended.  If anything, anon memory is the special
case that checks up-front.

Congratulations on adding additional instructions to the common case.
I don't understand why you persist with your nonsense.  Please stop.