linux-kernel - Re: [PATCH v2] mm: introduce PAGEFLAGS_MASK to replace ((1UL << NR_PAGEFLAGS)

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Date:   Thu, 19 Aug 2021 13:09:38 -0700
From:   Shakeel Butt <shakeelb@...gle.com>
To:     Muchun Song <songmuchun@...edance.com>
Cc:     Roman Gushchin <guro@...com>, Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Vladimir Davydov <vdavydov.dev@...il.com>,
        Matthew Wilcox <willy@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux MM <linux-mm@...ck.org>
Subject: Re: [PATCH v2] mm: introduce PAGEFLAGS_MASK to replace ((1UL <<
 NR_PAGEFLAGS) - 1)

On Thu, Aug 19, 2021 at 8:07 AM Muchun Song <songmuchun@...edance.com> wrote:
>
> Instead of hard-coding ((1UL << NR_PAGEFLAGS) - 1) everywhere, introducing
> PAGEFLAGS_MASK to make the code clear to get the page flags.
>
> Signed-off-by: Muchun Song <songmuchun@...edance.com>

Reviewed-by: Shakeel Butt <shakeelb@...gle.com>