NFSv4.1 send layoutreturn to fence disconnected data server

Let the MDS know that you are redirecting I/O from pNFS to MDS.

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

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index a63062d3882f..c6b7c1834947 100644
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -186,6 +186,8 @@ static int filelayout_async_handle_error(struct rpc_task *task,
         case -EPIPE:
                 dprintk("%s DS connection error %d\n", __func__,
                         task->tk_status);
+                if (!filelayout_test_devid_invalid(devid))
+                        _pnfs_return_layout(state->inode);
                 filelayout_mark_devid_invalid(devid);
                 rpc_wake_up(&tbl->slot_tbl_waitq);
                 /* fall through */