linux-kernel - Re: [PATCH v14 052/138] mm: Add folio_raw

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Message-ID: <1811270.1628628133@warthog.procyon.org.uk>
Date:   Tue, 10 Aug 2021 21:42:13 +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
Subject: Re: [PATCH v14 052/138] mm: Add folio_raw_mapping()

Matthew Wilcox (Oracle) <willy@...radead.org> wrote:

> Convert __page_rmapping to folio_raw_mapping and move it to mm/internal.h.
> It's only a couple of instructions (load and mask), so it's definitely
> going to be cheaper to inline it than call it.  Leave page_rmapping
> out of line.
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>

I assume you're going to call it from another source file at some point,
otherwise this is unnecessary.

Apart from that,

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