pnfs-obj: pNFS errors are communicated on iodata->pnfs_error

Some time along the way pNFS IO errors were switched to
communicate with a special iodata->pnfs_error member instead
of the regular RPC members. But objlayout was not switched
over.

Fix that!
Without this fix any IO error is hanged, because IO is not
switched to MDS and pages are never cleared or read.

[Applies to 3.2.0. Same bug different patch for 3.1/0 Kernels]
CC: Stable Tree <stable@kernel.org>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/nfs/objlayout/objlayout.c b/fs/nfs/objlayout/objlayout.c
index 72074e3a04f9..b3c29039f5b8 100644
--- a/fs/nfs/objlayout/objlayout.c
+++ b/fs/nfs/objlayout/objlayout.c
@@ -254,6 +254,8 @@ objlayout_read_done(struct objlayout_io_res *oir, ssize_t status, bool sync)
         oir->status = rdata->task.tk_status = status;
         if (status >= 0)
                 rdata->res.count = status;
+        else
+                rdata->pnfs_error = status;
         objlayout_iodone(oir);
         /* must not use oir after this point */
 
@@ -334,6 +336,8 @@ objlayout_write_done(struct objlayout_io_res *oir, ssize_t status, bool sync)
         if (status >= 0) {
                 wdata->res.count = status;
                 wdata->verf.committed = oir->committed;
+        } else {
+                wdata->pnfs_error = status;
         }
         objlayout_iodone(oir);
         /* must not use oir after this point */