linux-kernel - Re: [PATCH v10 21/33] mm/filemap: Add __folio_lock

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Message-ID: <7fb7b8a3-b559-88d6-b46e-d822fc689500@suse.cz>
Date:   Tue, 18 May 2021 12:34:30 +0200
From:   Vlastimil Babka <vbabka@...e.cz>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        akpm@...ux-foundation.org
Cc:     linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Christoph Hellwig <hch@....de>,
        Jeff Layton <jlayton@...nel.org>
Subject: Re: [PATCH v10 21/33] mm/filemap: Add __folio_lock_async

On 5/11/21 11:47 PM, Matthew Wilcox (Oracle) wrote:
> There aren't any actual callers of lock_page_async(), so remove it.
> Convert filemap_update_page() to call __folio_lock_async().
> 
> __folio_lock_async() is 21 bytes smaller than __lock_page_async(),
> but the real savings come from using a folio in filemap_update_page(),
> shrinking it from 514 bytes to 403 bytes, saving 111 bytes.  The text
> shrinks by 132 bytes in total.
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
> Reviewed-by: Christoph Hellwig <hch@....de>
> Acked-by: Jeff Layton <jlayton@...nel.org>


Acked-by: Vlastimil Babka <vbabka@...e.cz>