These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / fs / nfs / read.c

diff --git a/kernel/fs/nfs/read.c b/kernel/fs/nfs/read.c
index ae0ff7a..0a5e33f 100644 (file)
--- a/kernel/fs/nfs/read.c
+++ b/kernel/fs/nfs/read.c
@@ -72,6 +72,9 @@ void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio)
 {
        struct nfs_pgio_mirror *mirror;
 
+       if (pgio->pg_ops && pgio->pg_ops->pg_cleanup)
+               pgio->pg_ops->pg_cleanup(pgio);
+
        pgio->pg_ops = &nfs_pgio_rw_ops;
 
        /* read path should never have more than one mirror */
@@ -243,6 +246,13 @@ static void nfs_readpage_retry(struct rpc_task *task,
                nfs_set_pgio_error(hdr, -EIO, argp->offset);
                return;
        }
+
+       /* For non rpc-based layout drivers, retry-through-MDS */
+       if (!task->tk_ops) {
+               hdr->pnfs_error = -EAGAIN;
+               return;
+       }
+
        /* Yes, so retry the read at the end of the hdr */
        hdr->mds_offset += resp->count;
        argp->offset += resp->count;
@@ -265,7 +275,7 @@ static void nfs_readpage_result(struct rpc_task *task,
                        hdr->good_bytes = bound - hdr->io_start;
                }
                spin_unlock(&hdr->lock);
-       } else if (hdr->res.count != hdr->args.count)
+       } else if (hdr->res.count < hdr->args.count)
                nfs_readpage_retry(task, hdr);
 }