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Date: Mon, 2 Feb 2026 10:31:54 -0800
From: Andrew Morton <akpm@linux-foundation.org>
To: "Liam R. Howlett" <Liam.Howlett@oracle.com>
Cc: maple-tree@lists.infradead.org, linux-mm@kvack.org,
 linux-kernel@vger.kernel.org, Suren Baghdasaryan <surenb@google.com>,
 Matthew Wilcox <willy@infradead.org>, Sidhartha Kumar
 <sidhartha.kumar@oracle.com>, Vlastimil Babka <vbabka@suse.cz>, Alice Ryhl
 <aliceryhl@google.com>, Kuninori Morimoto
 <kuninori.morimoto.gx@renesas.com>, Geert Uytterhoeven
 <geert@linux-m68k.org>, Arnd Bergmann <arnd@arndb.de>, Christian Kujau
 <lists@nerdbynature.de>, SeongJae Park <sj@kernel.org>
Subject: Re: [PATCH v3 00/30] maple_tree: Replace big node with maple copy
Message-Id: <20260202103154.ad1aa05611c79d21b070a861@linux-foundation.org>
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On Mon, 2 Feb 2026 10:40:06 -0500 "Liam R. Howlett" <Liam.Howlett@oracle.com> wrote:

> * Andrew Morton <akpm@linux-foundation.org> [260131 15:27]:
> > On Fri, 30 Jan 2026 15:59:05 -0500 "Liam R. Howlett" <Liam.Howlett@oracle.com> wrote:
> > 
> > > The big node struct was created for simplicity of splitting,
> > > rebalancing, and spanning store operations by using a copy buffer to
> > > create the data necessary prior to breaking it up into 256B nodes.
> > > Certain operations were rather tricky due to the restriction of keeping
> > > NULL entries together and never at the end of a node (except the
> > > right-most node).
> > > 
> > 
> > Updated, thanks.
> > 
> > What are your thoughts on adding this to 6.19?  I'd expect to move it
> > into mm-stable Feb 17ish.
> 
> I think the chance of making 6.19 has passed.
> 
> Can we please target getting this into testing in linux-next as soon as
> 6.19 ships?
> 
> The priority for me is to ensure this is rock-solid prior to release.
> My concerns are corner cases and arch specific issues, which I can only
> do so much to mitigate on my own.  My hope is that linux-next exposure
> will help with those concerns.

Sounds good, I'll push this back into mm-new until -rc1.