linux-kernel - Re: [PATCH v14 087/138] mm/filemap: Convert mapping_get

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Message-ID: <1814926.1628632841@warthog.procyon.org.uk>
Date:   Tue, 10 Aug 2021 23:00:41 +0100
From:   David Howells <dhowells@...hat.com>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     dhowells@...hat.com, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
        Christoph Hellwig <hch@....de>
Subject: Re: [PATCH v14 087/138] mm/filemap: Convert mapping_get_entry to return a folio

Matthew Wilcox (Oracle) <willy@...radead.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@...radead.org>
> Reviewed-by: Christoph Hellwig <hch@....de>

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