linux-kernel - Re: [PATCH v3 6/8] mm/gup: use a standard migration target allocation callback

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Message-ID: <CAAmzW4Ngrf+Krc45RK_B=o5e9AHiXnquVDOOUpRX99OWWBW0wA@mail.gmail.com>
Date:   Fri, 26 Jun 2020 14:03:41 +0900
From:   Joonsoo Kim <js1304@...il.com>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>, kernel-team@....com,
        Vlastimil Babka <vbabka@...e.cz>,
        Christoph Hellwig <hch@...radead.org>,
        Roman Gushchin <guro@...com>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: Re: [PATCH v3 6/8] mm/gup: use a standard migration target allocation callback

2020년 6월 25일 (목) 오후 9:08, Michal Hocko <mhocko@...nel.org>님이 작성:
>
> On Tue 23-06-20 15:13:46, Joonsoo Kim wrote:
> > From: Joonsoo Kim <iamjoonsoo.kim@....com>
> >
> > There is a well-defined migration target allocation callback.
> > It's mostly similar with new_non_cma_page() except considering CMA pages.
> >
> > This patch adds a CMA consideration to the standard migration target
> > allocation callback and use it on gup.c.
>
> We already can express that by a missing __GFP_MOVABLE so I would rather
> not introduce a duplication in form of another flag.

I replied to this question in a previous email.

Thanks.