linux-kernel - Re: [PATCH] mm: Export PageHeadHuge()

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Message-ID: <YZUBgs+2PtnsmTAw@casper.infradead.org>
Date:   Wed, 17 Nov 2021 13:20:02 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     "Kirill A. Shutemov" <kirill@...temov.name>
Cc:     David Howells <dhowells@...hat.com>, linux-mm@...ck.org,
        torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: Export PageHeadHuge()

On Wed, Nov 17, 2021 at 11:36:23AM +0300, Kirill A. Shutemov wrote:
> On Tue, Nov 16, 2021 at 01:54:13PM +0000, David Howells wrote:
> > Export PageHeadHuge() - it's used by folio_test_hugetlb() and thence by
> > folio_file_page() and folio_contains().
> 
> Maybe move it to page-flag.h instead? It is trivial enough.

HUGETLB_PAGE_DTOR is defined in mm.h so there's a bit of a dependency
problem there.