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 8D9A423C8D7 for ; Wed, 12 Mar 2025 10:01:15 +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=1741773675; cv=none; b=LfRA96bWnj1/e81OM91V7fA87PGLWIBsxl1NsFaW7xJCmR72bZ2GNigNuJU2g/z2PLmT/+MAiK+66Vhto/SPkOAeaqpPifjc+7CfJb7tcTF+12d9gHI9xFg10DzyI1bTcAQFn+nFhxkK1Lx2ewAb4ZuKqx7uQIcwibji0uBgEaE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741773675; c=relaxed/simple; bh=o2vxWH2qhoW/0haeEeZL6dPBW55gd/3202HQzkcIqVU=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=jbQS+g63onJPP+QoODuwMY5py7UsygeKUTxmphkjquYnIkNktNXtvW76UlM0UsQdgPhnt2UvJTqrZhZ1wdG+2Op9XPqK6jNPDM5n6SJk88tSZazLA2rNtInBg9CwU9OJVzzkSSuYPpFE4Rt8lcdTUi/UUT2agLf0EU2mwBycLWU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PwJ4kQGf; 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="PwJ4kQGf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7207CC4CEF0; Wed, 12 Mar 2025 10:01:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741773675; bh=o2vxWH2qhoW/0haeEeZL6dPBW55gd/3202HQzkcIqVU=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=PwJ4kQGf6B8BFN2uuhe4zSZ6UQcSLfS/wlD9pmL9lGxL4NM7YMZkzqPpyXOfQ4uu6 iahjFUepUOH3SfRTuvqeXYpvFy4iPjbkKztFyQheAWkjxDQYi0TWxd34MzwSIU69Fn zLx7WHLJlS4JckLUGQRgtqXsfXwlD19AwUuz/yTH4qCgPsz7Uaimbjdj68Y8P6dxks UU5VdOes73Zg2SSQWHiu/NMOnn4v4FqyZ8dNA8n5+wjUpInk4IWZy2EtC/ypKl/NI2 Gw/IYjOcMBxb/lq2XGREsD9U6iAuXxTgikq71B5f0S9AXeiPGrLmyXZy7Ir5Bhoxk5 aqYSAmnuUtWew== Message-ID: Subject: Re: [RFC PATCH] NFSD: Add a Kconfig setting to enable delegated timestamps From: Jeff Layton To: cel@kernel.org, Neil Brown , Olga Kornievskaia , Dai Ngo , Tom Talpey Cc: linux-nfs@vger.kernel.org, Chuck Lever Date: Wed, 12 Mar 2025 06:01:13 -0400 In-Reply-To: <20250312030638.960830-1-cel@kernel.org> References: <20250312030638.960830-1-cel@kernel.org> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; keydata=mQINBE6V0TwBEADXhJg7s8wFDwBMEvn0qyhAnzFLTOCHooMZyx7XO7dAiIhDSi7G1NPxw n8jdFUQMCR/GlpozMFlSFiZXiObE7sef9rTtM68ukUyZM4pJ9l0KjQNgDJ6Fr342Htkjxu/kFV1Wv egyjnSsFt7EGoDjdKqr1TS9syJYFjagYtvWk/UfHlW09X+jOh4vYtfX7iYSx/NfqV3W1D7EDi0PqV T2h6v8i8YqsATFPwO4nuiTmL6I40ZofxVd+9wdRI4Db8yUNA4ZSP2nqLcLtFjClYRBoJvRWvsv4lm 0OX6MYPtv76hka8lW4mnRmZqqx3UtfHX/hF/zH24Gj7A6sYKYLCU3YrI2Ogiu7/ksKcl7goQjpvtV 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Disable them by default, but leave the implementation > intact so that development can continue. >=20 > X-Cc: stable@vger.kernel.org # v6.14 > Signed-off-by: Chuck Lever > --- > fs/nfsd/Kconfig | 12 +++++++++++- > fs/nfsd/nfs4state.c | 16 ++++++++++++++-- > 2 files changed, 25 insertions(+), 3 deletions(-) >=20 > This compiles. Initial testing shows that tests that were previously > failing are now passing. I would like to include this in v6.15, but > I will give it a little more time in nfsd-testing. >=20 > diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig > index c0bd1509ccd4..792d3fed1b45 100644 > --- a/fs/nfsd/Kconfig > +++ b/fs/nfsd/Kconfig > @@ -172,6 +172,16 @@ config NFSD_LEGACY_CLIENT_TRACKING > recoverydir, or spawn a process directly using a usermodehelper > upcall. > =20 > - These legacy client tracking methods have proven to be probelmatic > + These legacy client tracking methods have proven to be problematic > and will be removed in the future. Say Y here if you need support > for them in the interim. > + > +config NFSD_V4_DELEG_TIMESTAMPS > + bool "Support delegated timestamps" > + depends on NFSD_V4 > + default n > + help > + NFSD implements delegated timestamps according to > + draft-ietf-nfsv4-delstid-08 "Extending the Opening of Files". This > + is currently an experimental feature and is therefore left disabled > + by default. > diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c > index 2da700635955..2bd63594d8da 100644 > --- a/fs/nfsd/nfs4state.c > +++ b/fs/nfsd/nfs4state.c > @@ -5948,11 +5948,23 @@ nfsd4_verify_setuid_write(struct nfsd4_open *open= , struct nfsd_file *nf) > return 0; > } > =20 > +#ifdef CONFIG_NFSD_V4_DELEG_TIMESTAMPS > +static bool nfsd4_want_deleg_timestamps(const struct nfsd4_open *open) > +{ > + return open->op_deleg_want & OPEN4_SHARE_ACCESS_WANT_DELEG_TIMESTAMPS; > +} > +#else /* CONFIG_NFSD_V4_DELEG_TIMESTAMPS */ > +static bool nfsd4_want_deleg_timestamps(const struct nfsd4_open *open) > +{ > + return false; > +} > +#endif /* CONFIG NFSD_V4_DELEG_TIMESTAMPS */ > + > static struct nfs4_delegation * > nfs4_set_delegation(struct nfsd4_open *open, struct nfs4_ol_stateid *stp= , > struct svc_fh *parent) > { > - bool deleg_ts =3D open->op_deleg_want & OPEN4_SHARE_ACCESS_WANT_DELEG_T= IMESTAMPS; > + bool deleg_ts =3D nfsd4_want_deleg_timestamps(open); > struct nfs4_client *clp =3D stp->st_stid.sc_client; > struct nfs4_file *fp =3D stp->st_stid.sc_file; > struct nfs4_clnt_odstate *odstate =3D stp->st_clnt_odstate; > @@ -6193,8 +6205,8 @@ nfs4_open_delegation(struct svc_rqst *rqstp, struct= nfsd4_open *open, > struct nfs4_ol_stateid *stp, struct svc_fh *currentfh, > struct svc_fh *fh) > { > - bool deleg_ts =3D open->op_deleg_want & OPEN4_SHARE_ACCESS_WANT_DELEG_T= IMESTAMPS; > struct nfs4_openowner *oo =3D openowner(stp->st_stateowner); > + bool deleg_ts =3D nfsd4_want_deleg_timestamps(open); > struct nfs4_client *clp =3D stp->st_stid.sc_client; > struct svc_fh *parent =3D NULL; > struct nfs4_delegation *dp; Thanks for doing this, Chuck. Reviewed-by: Jeff Layton