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Date:   Tue, 9 Feb 2021 01:29:22 +0000
From:   Matthew Wilcox <willy@infradead.org>
To:     Dave Chinner <david@fromorbit.com>
Cc:     Jan Kara <jack@suse.cz>, linux-fsdevel@vger.kernel.org,
        Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH 1/2] mm: Protect operations adding pages to page cache
 with i_mapping_lock
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References: <20210208163918.7871-1-jack@suse.cz>
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On Tue, Feb 09, 2021 at 12:12:58PM +1100, Dave Chinner wrote:
> On Mon, Feb 08, 2021 at 05:39:17PM +0100, Jan Kara wrote:
> > +++ b/mm/filemap.c
> > @@ -2257,16 +2257,28 @@ static int filemap_update_page(struct kiocb *iocb,
> 
> What tree is this against? I don't see filemap_update_page() in a
> 5.11-rc7 tree...

It's in mmotm or -next.