From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 24C0CC41514 for ; Thu, 22 Aug 2019 07:52:16 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id DE61F2339F for ; Thu, 22 Aug 2019 07:52:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=rasmusvillemoes.dk header.i=@rasmusvillemoes.dk header.b="UsKrpxXP" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DE61F2339F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=rasmusvillemoes.dk Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 7E2AB6B02DB; Thu, 22 Aug 2019 03:52:15 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 793A36B02DC; Thu, 22 Aug 2019 03:52:15 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6A8E46B02DD; Thu, 22 Aug 2019 03:52:15 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0102.hostedemail.com [216.40.44.102]) by kanga.kvack.org (Postfix) with ESMTP id 46ECF6B02DB for ; Thu, 22 Aug 2019 03:52:15 -0400 (EDT) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with SMTP id DB8468248AAB for ; Thu, 22 Aug 2019 07:52:14 +0000 (UTC) X-FDA: 75849295788.21.coach87_309dd4d79235e X-HE-Tag: coach87_309dd4d79235e X-Filterd-Recvd-Size: 3393 Received: from mail-lj1-f196.google.com (mail-lj1-f196.google.com [209.85.208.196]) by imf32.hostedemail.com (Postfix) with ESMTP for ; Thu, 22 Aug 2019 07:52:13 +0000 (UTC) Received: by mail-lj1-f196.google.com with SMTP id u15so4651092ljl.3 for ; Thu, 22 Aug 2019 00:52:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rasmusvillemoes.dk; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=rCTePgG7RYdXOtsqMn/EGiKAq/u1kBDj9aPT9Dfgczw=; b=UsKrpxXPuL+ZKlwuc+ITBE2tuLBFTuT+d1kgO/pLG86lqhfUTqbrbhF74QLrk18Pzb aOSONgtap5+EOa0YnJJ0gx+bb3jdFQaJOFn7UB33gwPAQlJWy8VDqNOK6ZTbyqKmTSVM pvhaBbl0n3KZ4qFLlOKtQ5UHKddxuxb/jsrZk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=rCTePgG7RYdXOtsqMn/EGiKAq/u1kBDj9aPT9Dfgczw=; b=iieloFZttnAkC8jUy/j0eaXGbALCzGSUHooVW5iTaOMdmujdNdzlsqJcKz68OzkcZh rMvY5/VqIITc3LoEEQAdSGtwHqdDWPRmQMfuosL8fD7qHyYr61GlGN4DGwfOm0jGeqKn XPioABOeNFS+UsftRPo0/IdPJF3pKlOYcw0/GnQz9zpzB2aSbDraZVS8JuZncqupbbkd 4CWg/f5gl4mAWIx24B7AjwdCZ/XDDtore03RWuXIlmEGtCoF9xwMtZHk+oEfE6DShN8a RnVMCAZiPRqTtLwsR6cwHZt3OmzQstNnuLAqpe+MzmC5BIpvKqK0KNESc5cjUKcPQAHk QYhQ== X-Gm-Message-State: APjAAAV5gOGZkH2s9j+zlgvhU2MAs3D248cH5QFpT25obeSelAQ57sca 7fycmMnf2dGEePWnvysIF7YmBw== X-Google-Smtp-Source: APXvYqxV31j+6lX+In5ijbALOUcTYMKfDsts8VM2xlJCyXRU+AgvcViEXDeB82pw2Jxiz7jc352mNA== X-Received: by 2002:a05:651c:104a:: with SMTP id x10mr20266511ljm.238.1566460332223; Thu, 22 Aug 2019 00:52:12 -0700 (PDT) Received: from prevas-ravi.prevas.se ([81.216.59.226]) by smtp.gmail.com with ESMTPSA id x13sm3699675ljm.7.2019.08.22.00.52.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Aug 2019 00:52:11 -0700 (PDT) From: Rasmus Villemoes To: Andrew Morton Cc: Rasmus Villemoes , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH] mm/init-mm.c: use CPU_BITS_NONE to initialize .cpu_bitmap Date: Thu, 22 Aug 2019 09:52:07 +0200 Message-Id: <20190822075207.26400-1-linux@rasmusvillemoes.dk> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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: init_mm is sizeof(long) larger than it needs to be. Use the CPU_BITS_NONE macro meant for this, which will initialize just the indices 0...(BITS_TO_LONGS(NR_CPUS)-1) and hence make the array size actually BITS_TO_LONGS(NR_CPUS). Signed-off-by: Rasmus Villemoes --- mm/init-mm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/init-mm.c b/mm/init-mm.c index a787a319211e..fb1e15028ef0 100644 --- a/mm/init-mm.c +++ b/mm/init-mm.c @@ -35,6 +35,6 @@ struct mm_struct init_mm =3D { .arg_lock =3D __SPIN_LOCK_UNLOCKED(init_mm.arg_lock), .mmlist =3D LIST_HEAD_INIT(init_mm.mmlist), .user_ns =3D &init_user_ns, - .cpu_bitmap =3D { [BITS_TO_LONGS(NR_CPUS)] =3D 0}, + .cpu_bitmap =3D CPU_BITS_NONE, INIT_MM_CONTEXT(init_mm) }; --=20 2.20.1