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[195.135.220.15]) by mx.google.com with ESMTPS id l6si332509eja.290.2019.05.04.16.33.17 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 04 May 2019 16:33:17 -0700 (PDT) Received-SPF: softfail (google.com: domain of transitioning mhocko@kernel.org does not designate 195.135.220.15 as permitted sender) client-ip=195.135.220.15; Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning mhocko@kernel.org does not designate 195.135.220.15 as permitted sender) smtp.mailfrom=mhocko@kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 0FF0BAEE3; Sat, 4 May 2019 23:33:17 +0000 (UTC) Date: Sat, 4 May 2019 19:33:14 -0400 From: Michal Hocko To: Alexey Dobriyan Cc: akpm@linux-foundation.org, linux-mm@kvack.org Subject: Re: [PATCH] swap: ifdef struct vm_area_struct::swap_readahead_info Message-ID: <20190504233314.GU29835@dhcp22.suse.cz> References: <20190503190500.GA30589@avx2> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190503190500.GA30589@avx2> User-Agent: Mutt/1.10.1 (2018-07-13) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri 03-05-19 22:05:00, Alexey Dobriyan wrote: > The field is only used in swap code. > > Signed-off-by: Alexey Dobriyan Acked-by: Michal Hocko > --- > > include/linux/mm_types.h | 2 ++ > 1 file changed, 2 insertions(+) > > --- a/include/linux/mm_types.h > +++ b/include/linux/mm_types.h > @@ -326,7 +326,9 @@ struct vm_area_struct { > struct file * vm_file; /* File we map to (can be NULL). */ > void * vm_private_data; /* was vm_pte (shared mem) */ > > +#ifdef CONFIG_SWAP > atomic_long_t swap_readahead_info; > +#endif > #ifndef CONFIG_MMU > struct vm_region *vm_region; /* NOMMU mapping region */ > #endif -- Michal Hocko SUSE Labs