linux-kernel - [PATCH 0/2] vfs: fix delegated timestamp updates

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Message-Id: <20250722-nfsd-testing-v1-0-31321c7fc97f@kernel.org>
Date: Tue, 22 Jul 2025 14:52:26 -0400
From: Jeff Layton <jlayton@...nel.org>
To: Alexander Viro <viro@...iv.linux.org.uk>, 
 Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>, 
 Steven Rostedt <rostedt@...dmis.org>, 
 Masami Hiramatsu <mhiramat@...nel.org>, 
 Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, 
 Chuck Lever <chuck.lever@...cle.com>, NeilBrown <neil@...wn.name>, 
 Olga Kornievskaia <okorniev@...hat.com>, Dai Ngo <Dai.Ngo@...cle.com>, 
 Tom Talpey <tom@...pey.com>
Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-trace-kernel@...r.kernel.org, linux-nfs@...r.kernel.org, 
 Jeff Layton <jlayton@...nel.org>
Subject: [PATCH 0/2] vfs: fix delegated timestamp updates

We had been seeing some failures in the git regression testsuite when
run on NFS with delegated timestamps enabled. The first patch adds a
tracepoint that was helpful for tracking down the problem. The second
patch _mostly_ fixes the actual issue. With this, the git regression
testsuite is passing a lot more often for me, even when run in the
"stress" configuration under kdevops.

That said, I'm still seeing an occasional failure that I think may be a
problem on the client. I'll send email about that separately.

Signed-off-by: Jeff Layton <jlayton@...nel.org>
---
Jeff Layton (2):
      vfs: add tracepoints in inode_set_ctime_deleg
      vfs: fix delegated timestamp handling in setattr_copy()

 fs/attr.c                        | 52 +++++++++++++++++++++++++++++-----------
 fs/inode.c                       |  5 +++-
 fs/nfsd/nfs4xdr.c                |  4 +---
 include/trace/events/timestamp.h | 40 +++++++++++++++++++++++++++++++
 4 files changed, 83 insertions(+), 18 deletions(-)
---
base-commit: bab771b8eba6f3b13446ced52751be122af0d3b7
change-id: 20250722-nfsd-testing-5e861a3cf3a0

Best regards,
-- 
Jeff Layton <jlayton@...nel.org>