NFSv4: Kill nfs4_async_handle_error() abuses by NFSv4.1
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index fc653c3..a00932c 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3457,9 +3457,11 @@
}
static int
-_nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs_client *clp, struct nfs4_state *state)
+nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state)
{
- if (!clp || task->tk_status >= 0)
+ struct nfs_client *clp = server->nfs_client;
+
+ if (task->tk_status >= 0)
return 0;
switch(task->tk_status) {
case -NFS4ERR_ADMIN_REVOKED:
@@ -3491,8 +3493,7 @@
return -EAGAIN;
#endif /* CONFIG_NFS_V4_1 */
case -NFS4ERR_DELAY:
- if (server)
- nfs_inc_server_stats(server, NFSIOS_DELAY);
+ nfs_inc_server_stats(server, NFSIOS_DELAY);
case -NFS4ERR_GRACE:
case -EKEYEXPIRED:
rpc_delay(task, NFS4_POLL_RETRY_MAX);
@@ -3513,12 +3514,6 @@
return -EAGAIN;
}
-static int
-nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state)
-{
- return _nfs4_async_handle_error(task, server, server->nfs_client, state);
-}
-
int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
unsigned short port, struct rpc_cred *cred,
struct nfs4_setclientid_res *res)
@@ -5088,6 +5083,19 @@
kfree(calldata);
}
+static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp)
+{
+ switch(task->tk_status) {
+ case -NFS4ERR_DELAY:
+ case -EKEYEXPIRED:
+ rpc_delay(task, NFS4_POLL_RETRY_MAX);
+ return -EAGAIN;
+ default:
+ nfs4_schedule_state_recovery(clp);
+ }
+ return 0;
+}
+
static void nfs41_sequence_call_done(struct rpc_task *task, void *data)
{
struct nfs4_sequence_data *calldata = data;
@@ -5100,9 +5108,8 @@
if (atomic_read(&clp->cl_count) == 1)
goto out;
- if (_nfs4_async_handle_error(task, NULL, clp, NULL)
- == -EAGAIN) {
- nfs_restart_rpc(task, clp);
+ if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) {
+ rpc_restart_call_prepare(task);
return;
}
}
@@ -5175,6 +5182,23 @@
rpc_call_start(task);
}
+static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp)
+{
+ switch(task->tk_status) {
+ case 0:
+ case -NFS4ERR_COMPLETE_ALREADY:
+ case -NFS4ERR_WRONG_CRED: /* What to do here? */
+ break;
+ case -NFS4ERR_DELAY:
+ case -EKEYEXPIRED:
+ rpc_delay(task, NFS4_POLL_RETRY_MAX);
+ return -EAGAIN;
+ default:
+ nfs4_schedule_state_recovery(clp);
+ }
+ return 0;
+}
+
static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data)
{
struct nfs4_reclaim_complete_data *calldata = data;
@@ -5183,31 +5207,11 @@
dprintk("--> %s\n", __func__);
nfs41_sequence_done(res);
- switch (task->tk_status) {
- case 0:
- case -NFS4ERR_COMPLETE_ALREADY:
- break;
- case -NFS4ERR_BADSESSION:
- case -NFS4ERR_DEADSESSION:
- /*
- * Handle the session error, but do not retry the operation, as
- * we have no way of telling whether the clientid had to be
- * reset before we got our reply. If reset, a new wave of
- * reclaim operations will follow, containing their own reclaim
- * complete. We don't want our retry to get on the way of
- * recovery by incorrectly indicating to the server that we're
- * done reclaiming state since the process had to be restarted.
- */
- _nfs4_async_handle_error(task, NULL, clp, NULL);
- break;
- default:
- if (_nfs4_async_handle_error(
- task, NULL, clp, NULL) == -EAGAIN) {
- rpc_restart_call_prepare(task);
- return;
- }
- }
+ if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) {
+ rpc_restart_call_prepare(task);
+ return;
+ }
dprintk("<-- %s\n", __func__);
}