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Date: Tue, 24 Apr 2007 13:12:42 -0700 (PDT)
From: Christoph Lameter <clameter@sgi.com>
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To: Andrew Morton <akpm@linux-foundation.org>
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Subject: Re: Pagecache: find_or_create_page does not call a proper page
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On Tue, 24 Apr 2007, Andrew Morton wrote:

> > A highmem page can have buffers???
> 
> yep.  Take a 4k page which is stored in four discontiguous 1k disk blocks. The
> data at page_buffers(page) is the sole way in which we track which parts of
> the page belong to which blocks of the disk.

But I see no use of kmap for buffer access? The data is not accessible.