From: The pNFS Team <linux-nfs@xxxxxxxxxxxxxxx>
Signed-off-by: Andy Adamson <andros@xxxxxxxxxxxxxx>
Signed-off-by: Boaz Harrosh <bharrosh@xxxxxxxxxxx>
Signed-off-by: Andy Adamson <andros@xxxxxxxxxx>
Signed-off-by: Benny Halevy <bhalevy@xxxxxxxxxxx>
---
fs/nfs/nfs4proc.c | 37 +++++++++++++++++++++----------------
include/linux/nfs4.h | 7 +++++++
include/linux/nfs_fs_sb.h | 10 ++++++++++
3 files changed, 38 insertions(+), 16 deletions(-)
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 9d0d636..519b9bd 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,
@@ -1901,7 +1901,7 @@ 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);
@@ -2600,7 +2600,7 @@ 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);
@@ -2625,7 +2625,7 @@ static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_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(old_dir, &res->old_cinfo);
@@ -3082,7 +3082,7 @@ 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;
}
@@ -3106,7 +3106,7 @@ 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;
}
@@ -3135,7 +3135,7 @@ 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;
}
@@ -3455,9 +3455,10 @@ 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;
@@ -3481,14 +3482,16 @@ 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);
@@ -3501,6 +3504,8 @@ 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)
@@ -3634,8 +3639,8 @@ 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;
}
@@ -3889,7 +3894,7 @@ 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);
}
@@ -5361,7 +5366,7 @@ static void nfs4_layoutget_done(struct rpc_task *task, void *calldata)
task->tk_status = -NFS4ERR_DELAY;
/* Fall through */
default:
- if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
+ if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN) {
rpc_restart_call_prepare(task);
return;
}
diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 134716e..b32a792 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -131,6 +131,13 @@
#define EXCHGID4_FLAG_MASK_A 0x40070103
#define EXCHGID4_FLAG_MASK_R 0x80070103
+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 b197563..017f835 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -87,6 +87,16 @@ 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.
*/
--
1.6.6
--
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