# Re: flush\_kernel\_dcache\_page fixes and removal

- From: Linus Torvalds \<torvalds@linux-foundation.org\>
- Date: 2021-07-12 19:30:35 
- List: linux-doc
- Page: https://ratatoskr.run/linux-doc/2021/07/1442272
- Thread: https://ratatoskr.run/linux-arm-kernel/2021/07/1439128/t.md

```text
On Sun, Jul 11, 2021 at 11:09 PM Christoph Hellwig [ref] wrote:
>
> I think we should just remove it and eat the very minor overhead in
> exec rather than confusing poor driver writers.

Ack.

I think architectures that have virtual caches might want to think
about this patch a bit more, but on the whole I can't argue against
the "it's badly documented and misused".

No sane architecture will care, since dcache will be coherent (there
are more issues on the I$ side, but that's a different issue)

              Linus
```