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Date:   Sun, 9 Jul 2023 22:28:57 -0700
From:   Christoph Hellwig <hch@infradead.org>
To:     Qu Wenruo <quwenruo.btrfs@gmx.com>
Cc:     Christoph Hellwig <hch@infradead.org>, Qu Wenruo <wqu@suse.com>,
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Subject: Re: [PATCH] btrfs: add a debug accounting for eb pages contiguousness
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On Sun, Jul 09, 2023 at 12:44:33PM +0800, Qu Wenruo wrote:
> Unfortunately __filemap_get_folio() is still only creating folios using
> order 0, under the no_page tag:
> 
> 	folio = filemap_alloc_folio(gfp, 0);
> 
> So in that case, it's really no difference than find_or_create_page()
> for new pages/folios.

You're right, willys patches to pass the order haven't actually
made it to mainline yet, and I assumed they did.  So you'll have
to wait another merge window.