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Date:   Sat, 14 Aug 2021 00:04:30 +0100
From:   Matthew Wilcox <willy@infradead.org>
To:     Vlastimil Babka <vbabka@suse.cz>
Cc:     linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        linux-fsdevel@vger.kernel.org, Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH v14 038/138] mm/memcg: Add folio_memcg() and related
 functions
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On Wed, Aug 11, 2021 at 12:32:45PM +0200, Vlastimil Babka wrote:
> >  static inline bool PageMemcgKmem(struct page *page);
> 
> I think this fwd declaration is no longer needed.

I agree.  Deleted.