pnfs: recoalesce when ld read pagelist fails
For pnfs pagelist read failure, we need to pg_recoalesce and resend IO to
mds.
Signed-off-by: Peng Tao <peng_tao@emc.com>
Signed-off-by: Jim Rees <rees@umich.edu>
Cc: stable@kernel.org [3.0]
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index a205c8e..ee73d9a 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -1262,23 +1262,17 @@
/*
* Called by non rpc-based layout drivers
*/
-int
-pnfs_ld_read_done(struct nfs_read_data *data)
+void pnfs_ld_read_done(struct nfs_read_data *data)
{
- int status;
-
- if (!data->pnfs_error) {
+ if (likely(!data->pnfs_error)) {
__nfs4_read_done_cb(data);
data->mds_ops->rpc_call_done(&data->task, data);
- data->mds_ops->rpc_release(data);
- return 0;
+ } else {
+ put_lseg(data->lseg);
+ data->lseg = NULL;
+ dprintk("pnfs write error = %d\n", data->pnfs_error);
}
-
- dprintk("%s: pnfs_error=%d, retry via MDS\n", __func__,
- data->pnfs_error);
- status = nfs_initiate_read(data, NFS_CLIENT(data->inode),
- data->mds_ops);
- return status ? : -EAGAIN;
+ data->mds_ops->rpc_release(data);
}
EXPORT_SYMBOL_GPL(pnfs_ld_read_done);