Commit 4c03ae4a authored by Trond Myklebust's avatar Trond Myklebust

NFS: Initialise the nfs_net->nfs_client_lock

Ensure that we initialise the nfs_net->nfs_client_lock spinlock.
Also ensure that nfs_server_remove_lists() doesn't try to
dereference server->nfs_client before that is initialised.
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
Cc: Stanislav Kinsbursky <skinsbursky@parallels.com>
parent 3b64739f
......@@ -1055,11 +1055,14 @@ static void nfs_server_insert_lists(struct nfs_server *server)
static void nfs_server_remove_lists(struct nfs_server *server)
{
struct nfs_client *clp = server->nfs_client;
struct nfs_net *nn = net_generic(clp->net, nfs_net_id);
struct nfs_net *nn;
if (clp == NULL)
return;
nn = net_generic(clp->net, nfs_net_id);
spin_lock(&nn->nfs_client_lock);
list_del_rcu(&server->client_link);
if (clp && list_empty(&clp->cl_superblocks))
if (list_empty(&clp->cl_superblocks))
set_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state);
list_del(&server->master_link);
spin_unlock(&nn->nfs_client_lock);
......@@ -1777,6 +1780,7 @@ void nfs_clients_init(struct net *net)
#ifdef CONFIG_NFS_V4
idr_init(&nn->cb_ident_idr);
#endif
spin_lock_init(&nn->nfs_client_lock);
}
#ifdef CONFIG_PROC_FS
......
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