Revert "NFSv4: Retry LOCK on OLD_STATEID during delegation return"

Olga Kornievskaia reports that this patch breaks NFSv4.0 state recovery.
It also introduces additional complexity in the error paths for cases not
related to the original problem.  Let's revert it for now, and address the
original problem in another manner.

This reverts commit f5ea161.

Fixes: f5ea161 ("NFSv4: Retry LOCK on OLD_STATEID during delegation return")
Reported-by: Kornievskaia, Olga <Olga.Kornievskaia@netapp.com>
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

Author: bcodding-rh

fs/nfs/nfs4proc.c

@@ -7160,15 +7160,15 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata)
 {
 	struct nfs4_lockdata *data = calldata;
 	struct nfs4_lock_state *lsp = data->lsp;
-	struct nfs_server *server = NFS_SERVER(d_inode(data->ctx->dentry));
 
 	if (!nfs4_sequence_done(task, &data->res.seq_res))
 		return;
 
 	data->rpc_status = task->tk_status;
 	switch (task->tk_status) {
 	case 0:
-		renew_lease(server, data->timestamp);
+		renew_lease(NFS_SERVER(d_inode(data->ctx->dentry)),
+				data->timestamp);
 		if (data->arg.new_lock && !data->cancelled) {
 			data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS);
 			if (locks_lock_inode_wait(lsp->ls_state->inode, &data->fl) < 0)
@@ -7189,8 +7189,6 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata)
 			if (!nfs4_stateid_match(&data->arg.open_stateid,
 						&lsp->ls_state->open_stateid))
 				goto out_restart;
-			else if (nfs4_async_handle_error(task, server, lsp->ls_state, NULL) == -EAGAIN)
-				goto out_restart;
 		} else if (!nfs4_stateid_match(&data->arg.lock_stateid,
 						&lsp->ls_stateid))
 				goto out_restart;