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Date: Fri, 15 Mar 2024 12:53:09 -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>, 
 Chuck Lever <chuck.lever@...cle.com>, 
 Alexander Aring <alex.aring@...il.com>, 
 Trond Myklebust <trond.myklebust@...merspace.com>, 
 Anna Schumaker <anna@...nel.org>, Steve French <sfrench@...ba.org>, 
 Paulo Alcantara <pc@...guebit.com>, 
 Ronnie Sahlberg <ronniesahlberg@...il.com>, 
 Shyam Prasad N <sprasad@...rosoft.com>, Tom Talpey <tom@...pey.com>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "Rafael J. Wysocki" <rafael@...nel.org>, 
 David Howells <dhowells@...hat.com>, Tyler Hicks <code@...icks.com>, 
 Neil Brown <neilb@...e.de>, Olga Kornievskaia <kolga@...app.com>, 
 Dai Ngo <Dai.Ngo@...cle.com>, Miklos Szeredi <miklos@...redi.hu>, 
 Amir Goldstein <amir73il@...il.com>, Namjae Jeon <linkinjeon@...nel.org>, 
 Sergey Senozhatsky <senozhatsky@...omium.org>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-nfs@...r.kernel.org, linux-cifs@...r.kernel.org, 
 samba-technical@...ts.samba.org, netfs@...ts.linux.dev, 
 ecryptfs@...r.kernel.org, linux-unionfs@...r.kernel.org, 
 netdev@...r.kernel.org, Jeff Layton <jlayton@...nel.org>
Subject: [PATCH RFC 18/24] nfs: add a tracepoint to
 nfs_inode_detach_delegation_locked

We have a tracepoint for setting a delegation and reclaiming them. Add a
tracepoint for when the delegation is being detached from the inode.

Signed-off-by: Jeff Layton <jlayton@...nel.org>
---
 fs/nfs/delegation.c | 2 ++
 fs/nfs/nfs4trace.h  | 1 +
 2 files changed, 3 insertions(+)

diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index d4a42ce0c7e3..a331a2dbae12 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -342,6 +342,8 @@ nfs_detach_delegation_locked(struct nfs_inode *nfsi,
 		rcu_dereference_protected(nfsi->delegation,
 				lockdep_is_held(&clp->cl_lock));
 
+	trace_nfs4_detach_delegation(&nfsi->vfs_inode, delegation->type);
+
 	if (deleg_cur == NULL || delegation != deleg_cur)
 		return NULL;
 
diff --git a/fs/nfs/nfs4trace.h b/fs/nfs/nfs4trace.h
index fd7cb15b08b2..b4ebac1961cc 100644
--- a/fs/nfs/nfs4trace.h
+++ b/fs/nfs/nfs4trace.h
@@ -926,6 +926,7 @@ DECLARE_EVENT_CLASS(nfs4_set_delegation_event,
 			TP_ARGS(inode, fmode))
 DEFINE_NFS4_SET_DELEGATION_EVENT(nfs4_set_delegation);
 DEFINE_NFS4_SET_DELEGATION_EVENT(nfs4_reclaim_delegation);
+DEFINE_NFS4_SET_DELEGATION_EVENT(nfs4_detach_delegation);
 
 TRACE_EVENT(nfs4_delegreturn_exit,
 		TP_PROTO(

-- 
2.44.0


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