NFS: Don't accept more reads/writes if the open context recovery failed

If the state recovery failed, we want to ensure that the application
doesn't try to use the same file descriptor for more reads or writes.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index 1ee5737211d7..4ba32e23eddd 100644
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -305,6 +305,10 @@ static void filelayout_read_prepare(struct rpc_task *task, void *data)
 {
         struct nfs_read_data *rdata = data;
 
+        if (unlikely(test_bit(NFS_CONTEXT_BAD, &rdata->args.context->flags))) {
+                rpc_exit(task, -EIO);
+                return;
+        }
         if (filelayout_reset_to_mds(rdata->header->lseg)) {
                 dprintk("%s task %u reset io to MDS\n", __func__, task->tk_pid);
                 filelayout_reset_read(rdata);
@@ -407,6 +411,10 @@ static void filelayout_write_prepare(struct rpc_task *task, void *data)
 {
         struct nfs_write_data *wdata = data;
 
+        if (unlikely(test_bit(NFS_CONTEXT_BAD, &wdata->args.context->flags))) {
+                rpc_exit(task, -EIO);
+                return;
+        }
         if (filelayout_reset_to_mds(wdata->header->lseg)) {
                 dprintk("%s task %u reset io to MDS\n", __func__, task->tk_pid);
                 filelayout_reset_write(wdata);