nfs: run state manager in privileged mode
Signed-off-by: Alexandros Batsakis <batsakis@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 0e45075..6674b28 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -135,9 +135,9 @@
return status;
}
-static void nfs41_end_drain_session(struct nfs_client *clp,
- struct nfs4_session *ses)
+static void nfs4_end_drain_session(struct nfs_client *clp)
{
+ struct nfs4_session *ses = clp->cl_session;
int max_slots;
if (test_and_clear_bit(NFS4CLNT_SESSION_DRAINING, &clp->cl_state)) {
@@ -156,9 +156,9 @@
}
}
-static int nfs41_begin_drain_session(struct nfs_client *clp,
- struct nfs4_session *ses)
+static int nfs4_begin_drain_session(struct nfs_client *clp)
{
+ struct nfs4_session *ses = clp->cl_session;
struct nfs4_slot_table *tbl = &ses->fc_slot_table;
spin_lock(&tbl->slot_tbl_lock);
@@ -176,16 +176,12 @@
{
int status;
- status = nfs41_begin_drain_session(clp, clp->cl_session);
- if (status != 0)
- goto out;
status = nfs4_proc_exchange_id(clp, cred);
if (status != 0)
goto out;
status = nfs4_proc_create_session(clp);
if (status != 0)
goto out;
- nfs41_end_drain_session(clp, clp->cl_session);
nfs41_setup_state_renewal(clp);
nfs_mark_client_ready(clp, NFS_CS_READY);
out:
@@ -1271,13 +1267,8 @@
static int nfs4_reset_session(struct nfs_client *clp)
{
- struct nfs4_session *ses = clp->cl_session;
int status;
- status = nfs41_begin_drain_session(clp, ses);
- if (status != 0)
- return status;
-
status = nfs4_proc_destroy_session(clp->cl_session);
if (status && status != -NFS4ERR_BADSESSION &&
status != -NFS4ERR_DEADSESSION) {
@@ -1293,19 +1284,18 @@
out:
/*
* Let the state manager reestablish state
- * without waking other tasks yet.
*/
- if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) {
- /* Wake up the next rpc task */
- nfs41_end_drain_session(clp, ses);
- if (status == 0)
- nfs41_setup_state_renewal(clp);
- }
+ if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) &&
+ status == 0)
+ nfs41_setup_state_renewal(clp);
+
return status;
}
#else /* CONFIG_NFS_V4_1 */
static int nfs4_reset_session(struct nfs_client *clp) { return 0; }
+static int nfs4_begin_drain_session(struct nfs_client *clp) { return 0; }
+static int nfs4_end_drain_session(struct nfs_client *clp) { return 0; }
#endif /* CONFIG_NFS_V4_1 */
/* Set NFS4CLNT_LEASE_EXPIRED for all v4.0 errors and for recoverable errors
@@ -1337,6 +1327,7 @@
for(;;) {
if (test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) {
/* We're going to have to re-establish a clientid */
+ nfs4_begin_drain_session(clp);
status = nfs4_reclaim_lease(clp);
if (status) {
nfs4_set_lease_expired(clp, status);
@@ -1363,6 +1354,7 @@
/* Initialize or reset the session */
if (test_and_clear_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state)
&& nfs4_has_session(clp)) {
+ nfs4_begin_drain_session(clp);
status = nfs4_reset_session(clp);
if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state))
continue;
@@ -1396,6 +1388,7 @@
goto out_error;
}
+ nfs4_end_drain_session(clp);
if (test_and_clear_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state)) {
nfs_client_return_marked_delegations(clp);
continue;
@@ -1412,6 +1405,7 @@
out_error:
printk(KERN_WARNING "Error: state manager failed on NFSv4 server %s"
" with error %d\n", clp->cl_hostname, -status);
+ nfs4_end_drain_session(clp);
nfs4_clear_state_manager_bit(clp);
}