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Date:   Thu, 3 Sep 2020 12:22:18 -0700
From:   Andrew Morton <akpm@linux-foundation.org>
To:     "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc:     David Howells <dhowells@redhat.com>, linux-mm@kvack.org,
        linux-fsdevel@vger.kernel.org, Eric Biggers <ebiggers@google.com>
Subject: Re: [PATCH 3/9] mm/readahead: Make page_cache_ra_unbounded take a
 readahead_control
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On Thu,  3 Sep 2020 15:08:38 +0100 "Matthew Wilcox (Oracle)" <willy@infradead.org> wrote:

> Define it in the callers instead of in page_cache_ra_unbounded().
> 

The changelogs for patches 2-9 are explaining what the patches do, but
not why they do it, Presumably there's some grand scheme in mind, but
it isn't being revealed to the reader!