linux-kernel - Re: [RFC PATCH 1/3] mm, numa: rework do_pages

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Message-ID: <20171213124731.hmg4r5m3efybgjtx@node.shutemov.name>
Date:   Wed, 13 Dec 2017 15:47:31 +0300
From:   "Kirill A. Shutemov" <kirill@...temov.name>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     linux-mm@...ck.org, Zi Yan <zi.yan@...rutgers.edu>,
        Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andrea Reale <ar@...ux.vnet.ibm.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 1/3] mm, numa: rework do_pages_move

On Wed, Dec 13, 2017 at 01:17:03PM +0100, Michal Hocko wrote:
> On Wed 13-12-17 15:07:33, Kirill A. Shutemov wrote:
> [...]
> > The approach looks fine to me.
> > 
> > But patch is rather large and hard to review. And how git mixed add/remove
> > lines doesn't help too. Any chance to split it up further?
> 
> I was trying to do that but this is a drop in replacement so it is quite
> hard to do in smaller pieces. I've already put the allocation callback
> cleanup into a separate one but this is about all that I figured how to
> split. If you have any suggestions I am willing to try them out.

"git diff --patience" seems generate more readable output for the patch.

> > One nitpick: I don't think 'chunk' terminology should go away with the
> > patch.
> 
> Not sure what you mean here. I have kept chunk_start, chunk_node, so I
> am not really changing that terminology

We don't really have chunks anymore, right? We still *may* have per-node
batching, but..

Maybe just 'start' and 'current_node'?

-- 
 Kirill A. Shutemov