linux-kernel - Re: [PATCH v3 02/15] mm: introduce is_huge

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Message-ID: <20211110122945.GO1740502@nvidia.com>
Date:   Wed, 10 Nov 2021 08:29:45 -0400
From:   Jason Gunthorpe <jgg@...dia.com>
To:     Qi Zheng <zhengqi.arch@...edance.com>
Cc:     akpm@...ux-foundation.org, tglx@...utronix.de,
        kirill.shutemov@...ux.intel.com, mika.penttila@...tfour.com,
        david@...hat.com, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        songmuchun@...edance.com, zhouchengming@...edance.com
Subject: Re: [PATCH v3 02/15] mm: introduce is_huge_pmd() helper

On Wed, Nov 10, 2021 at 04:40:44PM +0800, Qi Zheng wrote:
> Currently we have some times the following judgments repeated in the
> code:
> 
> 	is_swap_pmd(*pmd) || pmd_trans_huge(*pmd) || pmd_devmap(*pmd)
> 
> which is to determine whether the *pmd is a huge pmd, so introduce
> is_huge_pmd() helper to deduplicate them.

Isn't this pmd_leaf() ?

Jason