linux-kernel - Re: [GIT PULL] MM updates for 6.6-rc1

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Message-ID: <CAHk-=wjtBk23T4bsA4wxyogvDAP0mWmPPvy=qaMWsySM=WOC9A@mail.gmail.com>
Date:   Tue, 29 Aug 2023 14:31:38 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Guo Ren <guoren@...nel.org>
Cc:     linux-mm@...ck.org, mm-commits@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [GIT PULL] MM updates for 6.6-rc1

On Mon, 28 Aug 2023 at 18:43, Andrew Morton <akpm@...ux-foundation.org> wrote:
>
> csky tree, arch/csky/abiv2/cacheflush.c:
> https://lkml.kernel.org/r/20230815104604.54f65293@canb.auug.org.au

At least this resolution in linux-next was wrong. It would just keep
on doing a cache invalidate on the same one-page address range over
and over again.

I think I did it right, but obviously can't test (and am too lazy to
build-test too).

Of course, it won't actually matter unless you have large folio on
csky, which is probably hard to impossible to trigger in practice, but
I thought I'd mention it if for no other reason than Guo Ren to be
aware and at least test-build and maybe think about it.

             Linus