linux-kernel - Re: [PATCH v2 09/46] mm/swap: Add folio_mark

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Message-ID: <YNLrp/QMEX20318Q@infradead.org>
Date:   Wed, 23 Jun 2021 10:07:03 +0200
From:   Christoph Hellwig <hch@...radead.org>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     akpm@...ux-foundation.org, linux-fsdevel@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 09/46] mm/swap: Add folio_mark_accessed()

On Tue, Jun 22, 2021 at 01:15:14PM +0100, Matthew Wilcox (Oracle) wrote:
> Convert mark_page_accessed() to folio_mark_accessed().  It already
> operated on the entire compound page, but now we can avoid calling
> compound_head quite so many times.  Shrinks the function from 424 bytes
> to 295 bytes (shrinking by 129 bytes).  The compatibility wrapper is 30
> bytes, plus the 8 bytes for the exported symbol means the kernel shrinks
> by 91 bytes.

Looks good,

Reviewed-by: Christoph Hellwig <hch@....de>