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Date:   Wed, 26 Aug 2020 03:26:23 +0100
From:   Matthew Wilcox <willy@infradead.org>
To:     "Darrick J. Wong" <darrick.wong@oracle.com>
Cc:     linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        linux-nvdimm@lists.01.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 5/9] iomap: Support arbitrarily many blocks per page
Message-ID: <20200826022623.GQ17456@casper.infradead.org>
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 <20200824145511.10500-6-willy@infradead.org>
 <20200825210203.GJ6096@magnolia>
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On Tue, Aug 25, 2020 at 02:02:03PM -0700, Darrick J. Wong wrote:
> >  /*
> > - * Structure allocated for each page when block size < PAGE_SIZE to track
> > + * Structure allocated for each page when block size < page size to track
> >   * sub-page uptodate status and I/O completions.
> 
> "for each regular page or head page of a huge page"?  Or whatever we're
> calling them nowadays?

Well, that's what I'm calling a "page" ;-)

How about "for each page or THP"?  The fact that it's stored in the
head page is incidental -- it's allocated for the THP.