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From:   David Howells <dhowells@redhat.com>
In-Reply-To: <20210715033704.692967-88-willy@infradead.org>
References: <20210715033704.692967-88-willy@infradead.org> <20210715033704.692967-1-willy@infradead.org>
To:     "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc:     dhowells@redhat.com, linux-kernel@vger.kernel.org,
        linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
        Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH v14 087/138] mm/filemap: Convert mapping_get_entry to return a folio
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Content-ID: <1814925.1628632841.1@warthog.procyon.org.uk>
Date:   Tue, 10 Aug 2021 23:00:41 +0100
Message-ID: <1814926.1628632841@warthog.procyon.org.uk>
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Matthew Wilcox (Oracle) <willy@infradead.org> wrote:

> The pagecache only contains folios, so indicate that this is definitely
> not a tail page.  Shrinks mapping_get_entry() by 56 bytes, but grows
> pagecache_get_page() by 21 bytes as gcc makes slightly different hot/cold
> code decisions.  A net reduction of 35 bytes of text.
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
> Reviewed-by: Christoph Hellwig <hch@lst.de>

Reviewed-by: David Howells <dhowells@redhat.com>