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Date: Wed, 20 Aug 2025 16:16:52 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Christian Brauner <brauner@kernel.org>, Pankaj Raghav
 <p.raghav@samsung.com>, Linux Kernel Mailing List
 <linux-kernel@vger.kernel.org>, Linux Next Mailing List
 <linux-next@vger.kernel.org>
Subject: Re: linux-next: build failure after merge of the vfs-brauner tree
Message-Id: <20250820161652.ab1675e53ec0718e733b4a77@linux-foundation.org>
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On Thu, 21 Aug 2025 08:54:41 +1000 Stephen Rothwell <sfr@canb.auug.org.au> wrote:

> Hi Christian,
> > >       |                                    ^~~~~~~~~~~~~~~~~~
> > >       |                                    is_zero_folio
> > > 
> > > Caused by commit
> > > 
> > >   5589673e8d8d ("iomap: use largest_zero_folio() in iomap_dio_zero()")
> > > 
> > > I have used the vfs-brauner tree from next-20250815 for today.  
> > 
> > I am still getting this failure.
> 
> The above commit is still in your tree which makes it unbuildable since
> the interface it uses does not exist in your tree (are you testing it?).
> 

How about we keep life simple and just carry the patch in both trees. 
Christian, I'll send a copy of the mm.git patch at you.