linux-kernel - Re: [RFT][PATCH] ACPI: OSL: Use rwlock instead of RCU for memory management

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Message-ID: <CAHp75Ve8A373Cbw6RiKTtkhj9jsxZ9dBY8ELtntk0B=yXxOCUg@mail.gmail.com>
Date:   Fri, 5 Jun 2020 22:40:36 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:     Dan Williams <dan.j.williams@...el.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Stable <stable@...r.kernel.org>, Len Brown <lenb@...nel.org>,
        Borislav Petkov <bp@...en8.de>,
        Ira Weiny <ira.weiny@...el.com>,
        James Morse <james.morse@....com>,
        Erik Kaneda <erik.kaneda@...el.com>,
        Myron Stowe <myron.stowe@...hat.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        linux-nvdimm@...ts.01.org
Subject: Re: [RFT][PATCH] ACPI: OSL: Use rwlock instead of RCU for memory management

On Fri, Jun 5, 2020 at 5:11 PM Rafael J. Wysocki <rjw@...ysocki.net> wrote:

...

> +       if (!refcount) {
> +               write_lock_irq(&acpi_ioremaps_list_lock);
> +
> +               list_del(&map->list);
> +
> +               write_unlock_irq(&acpi_ioremaps_list_lock);
> +       }
>         return refcount;

It seems we can decrease indentation level at the same time:

  if (refcount)
    return refcount;

 ...
 return 0;

-- 
With Best Regards,
Andy Shevchenko