linux-kernel - Re: [PATCH 2/2] mm: Make alloc_contig

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Message-ID: <66332742e9f44697212f25061790291e@suse.de>
Date:   Wed, 17 Feb 2021 16:27:27 +0100
From:   Oscar Salvador <osalvador@...e.de>
To:     Michal Hocko <mhocko@...e.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        David Hildenbrand <david@...hat.com>,
        Muchun Song <songmuchun@...edance.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] mm: Make alloc_contig_range handle in-use hugetlb
 pages

On 2021-02-17 16:06, Michal Hocko wrote:
> I do not follow. You have successfully isolated huge pages so why don't
> you add that page to the migratepages list to be migrated?

It is added. Note that I pass de list (cc->migratepages) to 
isolate_or_dissolve_huge_page().
It is done this way because we have to pass the list to 
isolate_huge_page() directly.
That is why I jump to isolate_success_no_list instead of isolate_sucess.

I know it is subtle, but I could not come up with a better name at that 
time.

-- 
Oscar Salvador
SUSE L3