Re: [PATCH v2 0/7] vmsplice: fix some problems in my previous vmsplice patchset

Andrei Vagin <[email protected]> Wed, 1 Jul 2026 12:16:55 -0700

Newsgroups	org.kernel.vger.linux-api,dev.linux.lists.fuse-devel,dev.linux.lists.patches,org.kernel.vger.linux-fsdevel,org.kernel.vger.linux-kernel,org.kernel.vger.netdev,org.kvack.linux-mm
Message-ID	<CANaxB-wewdUnxApVU3yn7hqbztNJFQfN6Y8r_XZk-TZRXpOQ=w@mail.gmail.com>

On Tue, Jun 30, 2026 at 9:01 PM Askar Safin <[email protected]> wrote:
>
> On Mon, Jun 29, 2026 at 11:56 AM Christian Brauner <[email protected]> wrote:
> > The amount of regression reports that we got in short succession doesn't
> > make it likely that we can merge a plain degradation.
>
> Let me repeat: this v2 patchset fixes all regressions found so far,
> except for major CRIU performance regression

Askar,

As previously mentioned, this isn't just a major performance issue for
CRIU; it completely breaks the current pre-dump implementation.

The other proposed fixes look like workarounds that target specific
projects. Since few projects run tests on linux-next kernels, we should
expect more projects to be affected by these changes.

Thanks,
Andrei