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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5635EEA852F for ; Sun, 8 Mar 2026 22:57:39 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 9E0176B0005; Sun, 8 Mar 2026 18:57:38 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 98DC76B0089; Sun, 8 Mar 2026 18:57:38 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 86F266B008A; Sun, 8 Mar 2026 18:57:38 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 77C126B0005 for ; Sun, 8 Mar 2026 18:57:38 -0400 (EDT) Received: from smtpin14.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 1812E8CE57 for ; Sun, 8 Mar 2026 22:57:38 +0000 (UTC) X-FDA: 84524409396.14.F811EAD Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf16.hostedemail.com (Postfix) with ESMTP id 71B3B180007 for ; Sun, 8 Mar 2026 22:57:36 +0000 (UTC) Authentication-Results: imf16.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=l+5HlSG6; spf=pass (imf16.hostedemail.com: domain of sj@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=sj@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1773010656; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=iBgvvSP27h9yQLAInNEQs4WnLdTvJd5IGiJ/+X2ywA0=; b=GBWlzqNVsI3KJ+Q9XVhjXUhJcgP7+qyqwtaiO2zj/xXG+fvlBwXFvmB+T3tQiw7Au6x9f6 3/vboBj3pT5/X9aaAL5TROLHacJRhrQ/7KXJmSuPY5Trsc5Z/fs4TmkPsX8aWCEnmDuMXJ BTyUcwfckwQoSsVHiSQdDzN4G8OFTD8= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1773010656; a=rsa-sha256; cv=none; b=C4T3NclqzcbJrA2apMh1/2yTXCGfbyDVZ7K0+h8+668reSdVayZwq45ekzN5P2u/rK4sgt w3WpoBR3wVVRTjsv0mo4DaevYw1t4kmqPRFCOzjRB6zu5t8qjcepHgnckAew+3d7pCNm+L W2c+ryswcfQ32uigLQxn6z3JnPwdwoc= ARC-Authentication-Results: i=1; imf16.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=l+5HlSG6; spf=pass (imf16.hostedemail.com: domain of sj@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=sj@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id A8CC160008; Sun, 8 Mar 2026 22:57:35 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AA7D8C116C6; Sun, 8 Mar 2026 22:57:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773010655; bh=ZOJ72oPZsRu+xMwquAb+ZZVrruw6imeSEYptHT8O3Po=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=l+5HlSG6e94taQUfx8yhbisqeha0oQZ3NyJXNiW4uzmYqOCb1NNym9XzAIbwlQsw2 mszbzooN5/3Dh952IevwDmafn4SimCe3vUYLhfNMEwFSaPgy6MMd1SceDxdMv5D8C3 TL+/4sIhqzeCuj4BxPgdhXmF4ck6uG1KQN+sUDnHmLA9GqNH9Xp7DU1z8wX2wSjk6a VD+hZuWFis3HvGnn6pB2aKvTZoz7GFDNpEw0pcWxZhmNqAosPG97ZzPOoaKsp6iv7y JZj5AilQm/PnpPt2E9yMTLr1sdHahGG6dWX1sKMwMnnp/i0ohM6BHZGRzKkPZ2qxZg 66HGufW9gPDug== From: SeongJae Park To: Jianhui Zhou Cc: SeongJae Park , aarcange@redhat.com, akpm@linux-foundation.org, david@kernel.org, jonaszhou@zhaoxin.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mike.kravetz@oracle.com, muchun.song@linux.dev, osalvador@suse.de, peterx@redhat.com, rppt@kernel.org, stable@vger.kernel.org, syzbot+f525fd79634858f478e7@syzkaller.appspotmail.com Subject: Re: [PATCH] mm/userfaultfd: fix hugetlb fault mutex hash calculation Date: Sun, 8 Mar 2026 15:57:27 -0700 Message-ID: <20260308225727.77058-1-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260308134152.6877-1-jianhuizzzzz@gmail.com> References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: mejyx7cb6mohbrqxa5bwi4y5wbwt43ki X-Rspam-User: X-Rspamd-Queue-Id: 71B3B180007 X-Rspamd-Server: rspam12 X-HE-Tag: 1773010656-762175 X-HE-Meta: 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 eVcK5cCF 9oQrwXYcWsZDOl7SqpeJpyLMQCaYvksMDo14Svxu5iEM8ZFnP7J0D1V0AfwQUnuFoytNqlJiftw1Y8r+g+tx6j2gj+JOessHzpGMD1t99vjbNTSofykNR+d4S1k2Ow52Oi2UVregadjfSjlT/M76AhTaOuZ4hzR97VBtZ6Qv5XGE6I5EuPv+dAlE/Czxu7kn8BV7WNHDi47SKVOgM0zoLbN1dC5FCVnar3JQihOzavEOuIzFRGcTmqBkTrTNH8rcfDVHy47G/2in8fJv1C1cNqQQDEh1WYUGhdkLoneBMuFX4mzSj1m2vzuRIoTV5IaLYTcPmoZegi4s0EA0= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Sun, 8 Mar 2026 21:41:51 +0800 Jianhui Zhou wrote: > On Fri, Mar 07, 2026 at 03:27:00AM +0000, SeongJae Park wrote: > > I just found this patch makes UML build fails as below. > > > > ../include/linux/hugetlb.h:1214:16: error: implicit declaration of > > function 'linear_page_index' [-Wimplicit-function-declaration] > > Thanks for catching this! As Peter pointed out, the > !CONFIG_HUGETLB_PAGE stub is actually unnecessary since > mfill_atomic_hugetlb() is only compiled when CONFIG_HUGETLB_PAGE is > enabled. I have removed it in v2, which also fixes this build error. Makes sense, thank you for the kind update, Jianhui! I also confirmed mm-new that updated with the v2 doesn't cause the build error. Thanks, SJ [...]