From: Andy Adamson <andros@xxxxxxxxxx>
Tasks sleeping on the slot table waitq wake to the rpc_prepare_task state.
Reset the task for io through the MDS if the deviceid is invalid.
Signed-off-by: Andy Adamson <andros@xxxxxxxxxx>
---
fs/nfs/nfs4filelayout.c | 26 +++++++++++++++++++++++++-
1 files changed, 25 insertions(+), 1 deletions(-)
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index 04d9445..faba987 100644
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -235,6 +235,12 @@ static void filelayout_read_prepare(struct rpc_task *task, void *data)
{
struct nfs_read_data *rdata = (struct nfs_read_data *)data;
+ if (filelayout_test_devid_invalid(FILELAYOUT_DEVID_NODE(rdata->lseg))) {
+ dprintk("%s task %u reset io to MDS\n", __func__, task->tk_pid);
+ filelayout_reset_read(task, rdata);
+ rpc_restart_call_prepare(task);
+ return;
+ }
rdata->read_done_cb = filelayout_read_done_cb;
if (nfs41_setup_sequence(rdata->ds_clp->cl_session,
@@ -329,6 +335,12 @@ static void filelayout_write_prepare(struct rpc_task *task, void *data)
{
struct nfs_write_data *wdata = (struct nfs_write_data *)data;
+ if (filelayout_test_devid_invalid(FILELAYOUT_DEVID_NODE(wdata->lseg))) {
+ dprintk("%s task %u reset io to MDS\n", __func__, task->tk_pid);
+ filelayout_reset_write(task, wdata);
+ rpc_restart_call_prepare(task);
+ return;
+ }
if (nfs41_setup_sequence(wdata->ds_clp->cl_session,
&wdata->args.seq_args, &wdata->res.seq_res,
task))
@@ -360,6 +372,18 @@ static void filelayout_write_release(void *data)
wdata->mds_ops->rpc_release(data);
}
+static void filelayout_commit_prepare(struct rpc_task *task, void *data)
+{
+ struct nfs_write_data *wdata = (struct nfs_write_data *)data;
+
+ if (nfs41_setup_sequence(wdata->ds_clp->cl_session,
+ &wdata->args.seq_args, &wdata->res.seq_res,
+ task))
+ return;
+
+ rpc_call_start(task);
+}
+
static void filelayout_commit_release(void *data)
{
struct nfs_write_data *wdata = (struct nfs_write_data *)data;
@@ -386,7 +410,7 @@ static const struct rpc_call_ops filelayout_write_call_ops = {
};
static const struct rpc_call_ops filelayout_commit_call_ops = {
- .rpc_call_prepare = filelayout_write_prepare,
+ .rpc_call_prepare = filelayout_commit_prepare,
.rpc_call_done = filelayout_write_call_done,
.rpc_count_stats = filelayout_write_count_stats,
.rpc_release = filelayout_commit_release,
--
1.7.6.4
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