[PATCH v6 01/20] nfsd: check fl_lmops in nfsd_breaker_owns_lease()

[Jeff Layton <jlayton@kernel.org>]

Any lease created by nfsd will have its fl_lmops set to
nfsd_lease_mng_ops. Do a quick check for that first when testing whether
the lease breaker owns the lease.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/nfsd/nfs4state.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index e59aec57e9e8..489558bf124c 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -91,6 +91,8 @@ static void _free_cpntf_state_locked(struct nfsd_net *nn, struct nfs4_cpntf_stat
 static void nfsd4_file_hash_remove(struct nfs4_file *fi);
 static void deleg_reaper(struct nfsd_net *nn);
 
+static const struct lease_manager_operations nfsd_lease_mng_ops;
+
 /* Locking: */
 
 enum nfsd4_st_mutex_lock_subclass {
@@ -5734,6 +5736,10 @@ static bool nfsd_breaker_owns_lease(struct file_lease *fl)
 	struct svc_rqst *rqst;
 	struct nfs4_client *clp;
 
+	/* Only nfsd leases */
+	if (fl->fl_lmops != &nfsd_lease_mng_ops)
+		return false;
+
 	rqst = nfsd_current_rqst();
 	if (!nfsd_v4client(rqst))
 		return false;

-- 
2.54.0