linux-kernel - Re: [PATCH 3/5] mm/madvise: thread VMA range state through madvise

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Message-ID: <880bc20e-589c-4813-90f8-42ab0413d8c8@lucifer.local>
Date: Fri, 20 Jun 2025 15:16:24 +0100
From: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
To: Vlastimil Babka <vbabka@...e.cz>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
        David Hildenbrand <david@...hat.com>, Zi Yan <ziy@...dia.com>,
        Baolin Wang <baolin.wang@...ux.alibaba.com>,
        "Liam R . Howlett" <Liam.Howlett@...cle.com>,
        Nico Pache <npache@...hat.com>, Ryan Roberts <ryan.roberts@....com>,
        Dev Jain <dev.jain@....com>, Barry Song <baohua@...nel.org>,
        Jann Horn <jannh@...gle.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Lance Yang <ioworker0@...il.com>,
        SeongJae Park <sj@...nel.org>, Suren Baghdasaryan <surenb@...gle.com>
Subject: Re: [PATCH 3/5] mm/madvise: thread VMA range state through
 madvise_behavior

On Fri, Jun 20, 2025 at 03:49:31PM +0200, Vlastimil Babka wrote:
> On 6/19/25 22:26, Lorenzo Stoakes wrote:
> > Rather than updating start and a confusing local parameter 'tmp' in
> > madvise_walk_vmas(), instead store the current range being operated upon in
> > the struct madvise_behavior helper object in a range pair and use this
> > consistently in all operations.
>
> Yeah much better but it still took me a bit to understand that "end" is now
> the original range->end that doesn't change during the iterations. Maybe
> make it const and comment?

Sorry missed this, will adjust on respin.