linux-kernel - Re: [PATCH] mm: make __paginginit based on CONFIG_MEMORY

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Message-ID: <20180731205003.GA3277@techadventures.net>
Date:   Tue, 31 Jul 2018 22:50:03 +0200
From:   Oscar Salvador <osalvador@...hadventures.net>
To:     Pavel Tatashin <pasha.tatashin@...cle.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...e.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        kirill.shutemov@...ux.intel.com, iamjoonsoo.kim@....com,
        Mel Gorman <mgorman@...e.de>,
        Souptick Joarder <jrdr.linux@...il.com>,
        Linux Memory Management List <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>, osalvador@...e.de
Subject: Re: [PATCH] mm: make __paginginit based on CONFIG_MEMORY_HOTPLUG

On Tue, Jul 31, 2018 at 11:23:33AM -0400, Pavel Tatashin wrote:
> Yes we free meminit when no CONFIG_MEMORY_HOTPLUG
> See here:
> http://src.illumos.org/source/xref/linux-master/include/asm-generic/vmlinux.lds.h#107

Oh, I got the point now.
Somehow I missed that we were freeing up the memory when CONFIG_MEMORY_HOTPLUG
was not in place.

So your patch makes sense to me now, sorry.

Since my patchset [1] + cleanup patch [2] remove almost all __paginginit,
leaving only pgdat_init_internals() and zone_init_internals(), I think
it would be great if you base your patch on top of that.
Or since the patchset has some cleanups already, I could add your patch
into it (as we did for the zone_to/set_nid() patch) and send a v6 with it.

What do you think?

[1] https://patchwork.kernel.org/patch/10548861/
[2] <20180731101752.GA473@...hadventures.net>

Thanks
-- 
Oscar Salvador
SUSE L3