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Message-ID: <a1e15ee0c841ffed09215cb4b17519d15c3638eb.camel@kernel.org>
Subject: Re: [PATCH RFC 00/13] NFSD backchannel fixes
From: Jeff Layton <jlayton@kernel.org>
To: Chuck Lever <cel@kernel.org>, linux-nfs@vger.kernel.org
Date: Thu, 25 Jan 2024 15:41:40 -0500
In-Reply-To: <170619984210.2833.7173004255003914651.stgit@manet.1015granger.net>
References: 
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On Thu, 2024-01-25 at 11:28 -0500, Chuck Lever wrote:
> The first three patches fix bugs that prevent NFSD's backchannel
> from reliably retransmitting after a client reconnects. These fixes
> might be appropriate for 6.8-rc.
>=20
> Following that are some new trace points that might be helpful for
> field troubleshooting.
>=20
> Then there are some minor clean-ups.
>=20
> I am still testing this series, and there is one msleep() call that
> needs some thought. Thoughts, comments, opinions, rotten fruit? You
> know the drill.
>=20
> ---
>=20
> Chuck Lever (13):
>       NFSD: Reset cb_seq_status after NFS4ERR_DELAY
>       NFSD: Reschedule CB operations when backchannel rpc_clnt is shut do=
wn
>       NFSD: Retransmit callbacks after client reconnects
>       NFSD: Add nfsd_seq4_status trace event
>       NFSD: Replace dprintks in nfsd4_cb_sequence_done()
>       NFSD: Rename nfsd_cb_state trace point
>       NFSD: Add callback operation lifetime trace points
>       SUNRPC: Remove EXPORT_SYMBOL_GPL for svc_process_bc()
>       NFSD: Remove unused @reason argument
>       NFSD: Replace comment with lockdep assertion
>       NFSD: Remove BUG_ON in nfsd4_process_cb_update()
>       SUNRPC: Remove stale comments
>       NFSD: Remove redundant cb_seq_status initialization
>=20
>=20
>  fs/nfsd/nfs4callback.c   |  81 +++++++++++++-------
>  fs/nfsd/nfs4state.c      |   1 +
>  fs/nfsd/trace.h          | 162 ++++++++++++++++++++++++++++++++++++++-
>  include/trace/misc/nfs.h |  34 ++++++++
>  net/sunrpc/svc.c         |   1 -
>  net/sunrpc/xprtsock.c    |   9 ---
>  6 files changed, 250 insertions(+), 38 deletions(-)
>=20
> --
> Chuck Lever
>=20
>=20

Love some of the new backchannel tracepoints. That should be helpful.

You can add this to 4-13:

Reviewed-by: Jeff Layton <jlayton@kernel.org>