linux-kernel - Re: [PATCH v17 1/9] mm: memory_hotplug: factor out bootmem core functions to bootmem

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Date:   Thu, 4 Mar 2021 15:26:17 +1100
From:   Balbir Singh <bsingharora@...il.com>
To:     Muchun Song <songmuchun@...edance.com>, corbet@....net,
        mike.kravetz@...cle.com, tglx@...utronix.de, mingo@...hat.com,
        bp@...en8.de, x86@...nel.org, hpa@...or.com,
        dave.hansen@...ux.intel.com, luto@...nel.org, peterz@...radead.org,
        viro@...iv.linux.org.uk, akpm@...ux-foundation.org,
        paulmck@...nel.org, mchehab+huawei@...nel.org,
        pawan.kumar.gupta@...ux.intel.com, rdunlap@...radead.org,
        oneukum@...e.com, anshuman.khandual@....com, jroedel@...e.de,
        almasrymina@...gle.com, rientjes@...gle.com, willy@...radead.org,
        osalvador@...e.de, mhocko@...e.com, song.bao.hua@...ilicon.com,
        david@...hat.com, naoya.horiguchi@....com,
        joao.m.martins@...cle.com
Cc:     duanxiongchun@...edance.com, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-fsdevel@...r.kernel.org, Miaohe Lin <linmiaohe@...wei.com>
Subject: Re: [PATCH v17 1/9] mm: memory_hotplug: factor out bootmem core
 functions to bootmem_info.c

On Wed, Mar 03, 2021 at 01:45:00PM +1100, Singh, Balbir wrote:
> On 26/2/21 12:21 am, Muchun Song wrote:
> > Move bootmem info registration common API to individual bootmem_info.c.
> > And we will use {get,put}_page_bootmem() to initialize the page for the
> > vmemmap pages or free the vmemmap pages to buddy in the later patch.
> > So move them out of CONFIG_MEMORY_HOTPLUG_SPARSE. This is just code
> > movement without any functional change.
> > 
> > Signed-off-by: Muchun Song <songmuchun@...edance.com>
> > Acked-by: Mike Kravetz <mike.kravetz@...cle.com>
> > Reviewed-by: Oscar Salvador <osalvador@...e.de>
> > Reviewed-by: David Hildenbrand <david@...hat.com>
> > Reviewed-by: Miaohe Lin <linmiaohe@...wei.com>
> ...
> 
> > diff --git a/mm/bootmem_info.c b/mm/bootmem_info.c
> > new file mode 100644
> > index 000000000000..fcab5a3f8cc0
> > --- /dev/null
> > +++ b/mm/bootmem_info.c
> > @@ -0,0 +1,124 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + *  linux/mm/bootmem_info.c
> > + *
> > + *  Copyright (C)
> 
> Looks like incomplete
>
Not that my comment was, I should have said

The copyright looks very incomplete

Balbir Singh.