linux-kernel - Re: [PATCH 6/9] mm, page_alloc: simplify zonelist initialization

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Message-ID: <20170717081942.GA12888@dhcp22.suse.cz>
Date:   Mon, 17 Jul 2017 10:19:42 +0200
From:   Michal Hocko <mhocko@...nel.org>
To:     Mel Gorman <mgorman@...e.de>
Cc:     linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 6/9] mm, page_alloc: simplify zonelist initialization

On Mon 17-07-17 09:07:23, Mel Gorman wrote:
> On Mon, Jul 17, 2017 at 08:06:40AM +0200, Michal Hocko wrote:
> > On Fri 14-07-17 15:18:23, Mel Gorman wrote:
> > > Fairly sure that's not what you meant.
> > > 
> > > 
> > > >  		pg_data_t *node = NODE_DATA(node_order[i]);
> > > >  
> > > > -		zoneref_idx = build_zonelists_node(node, zonelist, zoneref_idx);
> > > > +		nr_zones = build_zonelists_node(node, zonelist, nr_zones);
> > > 
> > > I meant converting build_zonelists_node and passing in &nr_zones and
> > > returning false when an empty node is encountered. In this context,
> > > it's also not about zones, it really is nr_zonerefs. Rename nr_zones in
> > > build_zonelists_node as well.
> > 
> > hmm, why don't we rather make it zonerefs based then. Something
> > like the following?
> 
> Works for me.

Should I fold it to the patch or make it a patch on its own?
-- 
Michal Hocko
SUSE Labs