nfsd: add a forget_client set_clnt routine

...that relies on the client_lock instead of client_mutex.

Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 2225e1103742..c4c28f8f48a1 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -5760,6 +5760,34 @@ u64 nfsd_forget_client(struct nfs4_client *clp, u64 max)
 	return 1;
 }
 
+u64
+nfsd_inject_forget_client(struct nfsd_fault_inject_op *op,
+			  struct sockaddr_storage *addr, size_t addr_size)
+{
+	u64 count = 0;
+	struct nfs4_client *clp;
+	struct nfsd_net *nn = net_generic(current->nsproxy->net_ns,
+					  nfsd_net_id);
+
+	if (!nfsd_netns_ready(nn))
+		return count;
+
+	spin_lock(&nn->client_lock);
+	clp = nfsd_find_client(addr, addr_size);
+	if (clp) {
+		if (mark_client_expired_locked(clp) == nfs_ok)
+			++count;
+		else
+			clp = NULL;
+	}
+	spin_unlock(&nn->client_lock);
+
+	if (clp)
+		expire_client(clp);
+
+	return count;
+}
+
 static void nfsd_print_count(struct nfs4_client *clp, unsigned int count,
 			     const char *type)
 {