From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.ozlabs.org (gandalf.ozlabs.org [150.107.74.76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A044CBE49; Thu, 29 May 2025 00:03:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=150.107.74.76 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748477003; cv=none; b=BGA2xb45wBZd37T0p70ScOGHI5FVyZiYaZO+LbSUJj1gUGk5qjftn1nmtQh/22x8ShoC+uY1jctR55RAWfZtmmqdjcP2buX8KO+H8Mnp76lV3h1WdTehlvLJtsLKbiZDCUQGrrQaxT6eNkgu3TkoD0lXxfMu0+b5Y0g7zoB9ZHk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748477003; c=relaxed/simple; bh=Glx/Ro0IgvvHBP+BrLUoA0phiOcaaugtzmu0ER7Owi4=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=WNg8yMDKONnztUm+jzqrZE1sVSruDPGOBwZCvBsEKw/wZhbgFxrV4VcmgWbFaL9xS8FrIfqgyHfQtYwhA0k8tUHEpj2W1FFbSx5Y9LRPE2Bwn46t6oxSdxisDoi4f7qob/MoC1bLBwaZZ4OFXBfRzpnQZIkOZRoWTiy+o/okRAc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=canb.auug.org.au; spf=pass smtp.mailfrom=canb.auug.org.au; dkim=pass (2048-bit key) header.d=canb.auug.org.au header.i=@canb.auug.org.au header.b=nsF+oZqC; arc=none smtp.client-ip=150.107.74.76 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=canb.auug.org.au Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=canb.auug.org.au Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=canb.auug.org.au header.i=@canb.auug.org.au header.b="nsF+oZqC" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canb.auug.org.au; s=202503; t=1748476998; bh=/M7FUjiB8SjnpAFmZyun/xfGtS5/4bQBYz+cFL4Jgck=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=nsF+oZqCyZ/Lh3ie8l8CHPHToZMkOW94jaPsMJiRc77d8Wgvw1Dfep32H8SOp1Q86 9TIxH65bogeTCBoVKM5Rf8+xpdBzt4YUHUJ4Ook3rbe03RliuKbHFu0U24zgtQbZ3M 7tQXROJsn9nVooKJt95gVBfQRJc9T9N9G1QWfHvuu5+U7Y2W3nhpWs4GOqosr0pmVC LJhzRyNwIqmVwaePWCjdpSCD+hAktpbHZkE4gpxLj451Rf7G5uKBzS5dNloPWOinVt iclp1OwHh+S16l/6edG/Nz/O8FkC3crfnQUZoes8hQGXX//FdCIOjQVLDOjLyTPx1D /cqYc53zTJOwA== Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mail.ozlabs.org (Postfix) with ESMTPSA id 4b765f4ZVvz4wxh; Thu, 29 May 2025 10:03:18 +1000 (AEST) Date: Thu, 29 May 2025 10:03:17 +1000 From: Stephen Rothwell To: Andrew Morton Cc: Shivank Garg , Linux Kernel Mailing List , Linux Next Mailing List Subject: Re: linux-next: build failure after merge of the mm-hotfixes tree Message-ID: <20250529100317.1af7ac47@canb.auug.org.au> In-Reply-To: <20250529095938.43087534@canb.auug.org.au> References: <20250529095938.43087534@canb.auug.org.au> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/nQ4Ox0kX2zKUp31e06EhV+Q"; protocol="application/pgp-signature"; micalg=pgp-sha256 --Sig_/nQ4Ox0kX2zKUp31e06EhV+Q Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hi all, On Thu, 29 May 2025 09:59:38 +1000 Stephen Rothwell = wrote: >=20 > After merging the mm-hotfixes tree, today's linux-next build (powerpc > ppc64_defconfig) failed like this: >=20 > mm/khugepaged.c: In function 'hpage_collapse_scan_file': > mm/khugepaged.c:2337:21: error: implicit declaration of function 'folio_e= xpected_ref_count' [-Wimplicit-function-declaration] > 2337 | if (folio_expected_ref_count(folio) + 1 !=3D foli= o_ref_count(folio)) { > | ^~~~~~~~~~~~~~~~~~~~~~~~ >=20 > Caused by commit >=20 > 3bdddbba5f02 ("mm/khugepaged: fix race with folio split/free using temp= orary reference") >=20 > I have reverted that commit for today. folio_expected_ref_count() is not introduced until commit 86ebd50224c0 ("mm: add folio_expected_ref_count() for reference count cal= culation") in the mm-stable tree. --=20 Cheers, Stephen Rothwell --Sig_/nQ4Ox0kX2zKUp31e06EhV+Q Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEENIC96giZ81tWdLgKAVBC80lX0GwFAmg3pEYACgkQAVBC80lX 0GwGlAgAhX5OSUxEN+cbd+5WQQ/qsL6goXv/wc76rWsgqH+2rih3oXw1IlVpUaFX ydLwJXfVBAeoKgpx3ErCvX9BHu04MWiHNstyk5LtaoWHDmLcLHM52CaLT+B3CUkP nev6B+blk6ypV7wK0D9wGya7pJwyD041IOy+bM5QKbNoM375Sp9O4r3e8ezrm7Xg jJSVijDzHexXPxxKaUDmKGiPBnd1ixwBuKdPNqf+OWVx6NtYDTNwqnOPrfBMqvU0 HgOP+K5n+UKVbefHXknZS1hgMO/8XsSJBJ2xusML/MAALJG/g1otBnw9E8+t67dv Cd9DODzkPE0FxXNFvnqIOmRy0BrnvQ== =rOKk -----END PGP SIGNATURE----- --Sig_/nQ4Ox0kX2zKUp31e06EhV+Q--