From: The pNFS Team <linux-nfs@xxxxxxxxxxxxxxx>
Signed-off-by: Andy Adamson <andros@xxxxxxxxxx>
---
fs/nfs/nfs4proc.c | 39 ++++++++++++++++++++++-----------------
include/linux/nfs4.h | 7 +++++++
include/linux/nfs_fs_sb.h | 10 ++++++++++
3 files changed, 39 insertions(+), 17 deletions(-)
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index e8b1620..353c2fb 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -70,7 +70,7 @@ struct nfs4_opendata;
static int _nfs4_proc_open(struct nfs4_opendata *data);
static int _nfs4_recover_proc_open(struct nfs4_opendata *data);
static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
-static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *);
+static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *, struct nfs_client *);
static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
@@ -1896,7 +1896,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
if (calldata->arg.fmode == 0)
break;
default:
- if (nfs4_async_handle_error(task, server, state) == -EAGAIN)
+ if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN)
rpc_restart_call_prepare(task);
}
nfs_release_seqid(calldata->arg.seqid);
@@ -2688,7 +2688,7 @@ static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
if (!nfs4_sequence_done(task, &res->seq_res))
return 0;
- if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
+ if (nfs4_async_handle_error(task, res->server, NULL, NULL) == -EAGAIN)
return 0;
update_changeattr(dir, &res->cinfo);
nfs_post_op_update_inode(dir, res->dir_attr);
@@ -3135,7 +3135,7 @@ static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
if (!nfs4_sequence_done(task, &data->res.seq_res))
return -EAGAIN;
- if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) {
+ if (nfs4_async_handle_error(task, server, data->args.context->state, NULL) == -EAGAIN) {
nfs_restart_rpc(task, server->nfs_client);
return -EAGAIN;
}
@@ -3159,7 +3159,7 @@ static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
if (!nfs4_sequence_done(task, &data->res.seq_res))
return -EAGAIN;
- if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) {
+ if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state, NULL) == -EAGAIN) {
nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
return -EAGAIN;
}
@@ -3188,7 +3188,7 @@ static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
if (!nfs4_sequence_done(task, &data->res.seq_res))
return -EAGAIN;
- if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) {
+ if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL, NULL) == -EAGAIN) {
nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
return -EAGAIN;
}
@@ -3505,9 +3505,10 @@ static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen
}
static int
-nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state)
+nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state, struct nfs_client *clp)
{
- struct nfs_client *clp = server->nfs_client;
+ if (!clp)
+ clp = server->nfs_client;
if (task->tk_status >= 0)
return 0;
@@ -3534,14 +3535,16 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server,
case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
case -NFS4ERR_SEQ_FALSE_RETRY:
case -NFS4ERR_SEQ_MISORDERED:
- dprintk("%s ERROR %d, Reset session\n", __func__,
- task->tk_status);
+ dprintk("%s ERROR %d, Reset session. Exchangeid "
+ "flags 0x%x\n", __func__, task->tk_status,
+ clp->cl_exchange_flags);
nfs4_schedule_state_recovery(clp);
task->tk_status = 0;
return -EAGAIN;
#endif /* CONFIG_NFS_V4_1 */
case -NFS4ERR_DELAY:
- nfs_inc_server_stats(server, NFSIOS_DELAY);
+ if (server)
+ nfs_inc_server_stats(server, NFSIOS_DELAY);
case -NFS4ERR_GRACE:
case -EKEYEXPIRED:
rpc_delay(task, NFS4_POLL_RETRY_MAX);
@@ -3554,6 +3557,8 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server,
task->tk_status = nfs4_map_errors(task->tk_status);
return 0;
do_state_recovery:
+ if (is_ds_only_client(clp))
+ return 0;
rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
nfs4_schedule_state_recovery(clp);
if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
@@ -3687,8 +3692,8 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
renew_lease(data->res.server, data->timestamp);
break;
default:
- if (nfs4_async_handle_error(task, data->res.server, NULL) ==
- -EAGAIN) {
+ if (nfs4_async_handle_error(task, data->res.server, NULL, NULL)
+ == -EAGAIN) {
nfs_restart_rpc(task, data->res.server->nfs_client);
return;
}
@@ -3946,7 +3951,7 @@ static void nfs4_locku_done(struct rpc_task *task, void *data)
case -NFS4ERR_EXPIRED:
break;
default:
- if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN)
+ if (nfs4_async_handle_error(task, calldata->server, NULL, NULL) == -EAGAIN)
nfs_restart_rpc(task,
calldata->server->nfs_client);
}
@@ -5399,7 +5404,7 @@ static void nfs4_pnfs_layoutget_done(struct rpc_task *task, void *calldata)
pnfs_get_layout_done(lgp, task->tk_status);
- if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN)
+ if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN)
nfs_restart_rpc(task, server->nfs_client);
lgp->status = task->tk_status;
@@ -5508,7 +5513,7 @@ pnfs_layoutcommit_done(struct rpc_task *task, void *calldata)
if (RPC_ASSASSINATED(task))
return;
- if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN)
+ if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN)
nfs_restart_rpc(task, server->nfs_client);
data->status = task->tk_status;
@@ -5618,7 +5623,7 @@ static void nfs4_pnfs_layoutreturn_done(struct rpc_task *task, void *calldata)
if (RPC_ASSASSINATED(task))
return;
- if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN)
+ if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN)
nfs_restart_rpc(task, server->nfs_client);
dprintk("<-- %s\n", __func__);
diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 004a867..2737013 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -121,6 +121,13 @@
#define EXCHGID4_FLAG_MASK_A 0x40070003
#define EXCHGID4_FLAG_MASK_R 0x80070003
+static inline bool
+is_ds_only_session(u32 exchange_flags)
+{
+ u32 mask = EXCHGID4_FLAG_USE_PNFS_DS | EXCHGID4_FLAG_USE_PNFS_MDS;
+ return (exchange_flags & mask) == EXCHGID4_FLAG_USE_PNFS_DS;
+}
+
#define SEQ4_STATUS_CB_PATH_DOWN 0x00000001
#define SEQ4_STATUS_CB_GSS_CONTEXTS_EXPIRING 0x00000002
#define SEQ4_STATUS_CB_GSS_CONTEXTS_EXPIRED 0x00000004
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index 8d17e67..c17440b 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -91,6 +91,16 @@ struct nfs_client {
#endif
};
+static inline bool
+is_ds_only_client(struct nfs_client *clp)
+{
+#ifdef CONFIG_NFS_V4_1
+ return is_ds_only_session(clp->cl_exchange_flags);
+#else
+ return false;
+#endif
+}
+
/*
* NFS client parameters stored in the superblock.
*/
--
1.6.2.5
--
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