From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 957773683B1 for ; Thu, 30 Oct 2025 17:53:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761846794; cv=none; b=LD1lWC4HrDIBbCeODIECySULzTuGFNQiUiYYGMranKjehUh9z3qHiTkIjT6gcKlRSVXJid0tS27DJble6BrgmedaKB2Jv7wiQPqy/AnBUHBlopyMRWSeRWVvwJxfhcQy2FeJ98EFdkZ/gx5v60N5DVGPW7n/s0OY1prQPZN2oy4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761846794; c=relaxed/simple; bh=FuQvUosk+9zDQfUojD1cIE/RQvp6mUASz1w7oyWuqxE=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=p0nwX0Woz5BPO8iD4TXZZqMQ2MlI0eXEGZOTiiirgBbd/rzZ7Sy9vsP9mFj+et5aFnlvNgQf4u6v4C2sVtQpPa6qdPMTWgkoviyxVkwBsT95GFliQWvvaRHHx3XwhsTW1xJG0K43+w3gIqnO3mVjFCjL4oI8dckujQrFi0uEZQg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=QaPepJzD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="QaPepJzD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A80F7C4CEF1; Thu, 30 Oct 2025 17:53:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761846794; bh=FuQvUosk+9zDQfUojD1cIE/RQvp6mUASz1w7oyWuqxE=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=QaPepJzDGQZSGTCs14y6D6H7d3aH558DRgr/zmXlgdKMN4OaeQ1gH0W7HuJinB3zZ Af+PNRctsbxHcOhuBPA5RZ0+1XnSD2tHQXrxxC8tATjgVJsUSzlf60MKau6mtdAsLm kHfiuTzy4EIabLNo+9EetXwp79jm6avbzrjuLGJ7TWhTXpPM00su5Ri+05N5xxK9Wu GLeCO8hZS7kP4+s9/yzUCZpeQX45bJloMOO8VSS+nO9jvA4cjI0wvowTe0kwW4B4F1 Rf8zCpHrQ/khlVjJ8niDocfPDNqlSYqpr5abMkfWkL0Z4cMadvuIPEvXL5Z2BZGRSG rxR8RbOBmCF7g== Message-ID: <18c5ba1652045fb20bc74972d4024e9f42762875.camel@kernel.org> Subject: Re: [PATCH 1/1] NFSD: don't start nfsd if sv_permsocks is empty From: Jeff Layton To: Olga Kornievskaia , chuck.lever@oracle.com Cc: linux-nfs@vger.kernel.org, neilb@brown.name, Dai.Ngo@oracle.com, tom@talpey.com Date: Thu, 30 Oct 2025 13:53:12 -0400 In-Reply-To: <20251030163532.54626-1-okorniev@redhat.com> References: <20251030163532.54626-1-okorniev@redhat.com> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; keydata=mQINBE6V0TwBEADXhJg7s8wFDwBMEvn0qyhAnzFLTOCHooMZyx7XO7dAiIhDSi7G1NPxw n8jdFUQMCR/GlpozMFlSFiZXiObE7sef9rTtM68ukUyZM4pJ9l0KjQNgDJ6Fr342Htkjxu/kFV1Wv egyjnSsFt7EGoDjdKqr1TS9syJYFjagYtvWk/UfHlW09X+jOh4vYtfX7iYSx/NfqV3W1D7EDi0PqV T2h6v8i8YqsATFPwO4nuiTmL6I40ZofxVd+9wdRI4Db8yUNA4ZSP2nqLcLtFjClYRBoJvRWvsv4lm 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trying to create a server instance, if no > listening sockets were present then default parameter udp > and tcp listeners were created. It's unclear what purpose > was of starting these listeners were and how this could have > been triggered by the userland setup. This patch proposed > to ensure the reverse that we never end in a situation where > no listener sockets are created and we are trying to create > nfsd threads. >=20 > The problem it solves is: when nfs.conf only has tcp=3Dn (and > nothing else for the choice of transports), nfsdctl would > still start the server and create udp and tcp listeners. >=20 > Signed-off-by: Olga Kornievskaia > --- > fs/nfsd/nfssvc.c | 28 +++++----------------------- > 1 file changed, 5 insertions(+), 23 deletions(-) >=20 > diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c > index 7057ddd7a0a8..40592b61b04b 100644 > --- a/fs/nfsd/nfssvc.c > +++ b/fs/nfsd/nfssvc.c > @@ -249,27 +249,6 @@ int nfsd_nrthreads(struct net *net) > return rv; > } > =20 > -static int nfsd_init_socks(struct net *net, const struct cred *cred) > -{ > - int error; > - struct nfsd_net *nn =3D net_generic(net, nfsd_net_id); > - > - if (!list_empty(&nn->nfsd_serv->sv_permsocks)) > - return 0; > - > - error =3D svc_xprt_create(nn->nfsd_serv, "udp", net, PF_INET, NFS_PORT, > - SVC_SOCK_DEFAULTS, cred); > - if (error < 0) > - return error; > - > - error =3D svc_xprt_create(nn->nfsd_serv, "tcp", net, PF_INET, NFS_PORT, > - SVC_SOCK_DEFAULTS, cred); > - if (error < 0) > - return error; > - > - return 0; > -} > - > static int nfsd_users =3D 0; > =20 > static int nfsd_startup_generic(void) > @@ -377,9 +356,12 @@ static int nfsd_startup_net(struct net *net, const s= truct cred *cred) > ret =3D nfsd_startup_generic(); > if (ret) > return ret; > - ret =3D nfsd_init_socks(net, cred); > - if (ret) > + > + if (list_empty(&nn->nfsd_serv->sv_permsocks)) { > + pr_warn("NFSD: not starting because no listening sockets found\n"); > + ret =3D -EIO; > goto out_socks; > + } > =20 > if (nfsd_needs_lockd(nn) && !nn->lockd_up) { > ret =3D lockd_up(net, cred); Assuming that there is no regression with rpc.nfsd startup, this looks good to me. Reviewed-by: Jeff Layton