[PATCH RFC 18/24] nfs: add a tracepoint to nfs_inode_detach_delegation_locked

Jeff Layton
2024-03-15T16:54:04Z

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@kernel.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