Re: [PATCH v1 1/1] ACPI: Switch to use list_entry_is_head() helper

[Rafael J. Wysocki]

On Wed, Mar 2, 2022 at 4:50 PM Andy Shevchenko
<andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
>
> On Fri, Feb 11, 2022 at 01:04:23PM +0200, Andy Shevchenko wrote:
> > Since we got list_entry_is_head() helper in the generic header,
> > we may switch the ACPI modules to use it. This eliminates the
> > need in additional variable. In some cases it reduces critical
> > sections as well.
>
> Besides the work required in a couple of cases (LKP) there is an
> ongoing discussion about list loops (and this particular API).
>
> Rafael, what do you think is the best course of action here?

I think the current approach is to do the opposite of what this patch
is attempting to do: avoid using the list iterator outside of the
loop.