linux-kernel - Re: [PATCH v3 4/5] mm/page_alloc: Move initialization of node and zones to an own function

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Date:   Thu, 26 Jul 2018 11:35:35 -0400
From:   Pavel Tatashin <pasha.tatashin@...cle.com>
To:     mhocko@...nel.org
Cc:     osalvador@...hadventures.net,
        Andrew Morton <akpm@...ux-foundation.org>,
        Vlastimil Babka <vbabka@...e.cz>, mgorman@...hsingularity.net,
        aaron.lu@...el.com, iamjoonsoo.kim@....com,
        Linux Memory Management List <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>, dan.j.williams@...el.com,
        osalvador@...e.de
Subject: Re: [PATCH v3 4/5] mm/page_alloc: Move initialization of node and
 zones to an own function

> OK, this looks definitely better. I will have to check that all the
> required state is initialized properly. Considering the above
> explanation I would simply fold the follow up patch into this one. It is
> not so large it would get hard to review and you would make it clear why
> the work is done.

I will review this work, once Oscar combines patches 4 & 5 as Michal suggested.


>
> > +/*
> > + * Set up the zone data structures:
> > + *   - mark all pages reserved
> > + *   - mark all memory queues empty
> > + *   - clear the memory bitmaps
> > + *
> > + * NOTE: pgdat should get zeroed by caller.
> > + * NOTE: this function is only called during early init.
> > + */
> > +static void __paginginit free_area_init_core(struct pglist_data *pgdat)
>
> now that this function is called only from the early init code we can
> make it s@...aginginit@...nit@ AFAICS.

True, in patch 5. Also, zone_init_internals() should be marked as __paginginit.

Thank you,
Pavel