nfs41: only state manager sets NFS4CLNT_SESSION_SETUP

Replace sync and async handlers setting of the NFS4CLNT_SESSION_SETUP bit with
setting NFS4CLNT_CHECK_LEASE, and let the state manager decide to reset the session.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index a0f73e99ff3d5e7a689af6f224efcc597695a2f4..637a6b476bd66652545f2d6ad9ff1c65e0bde4a6 100644 (file)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -270,7 +270,7 @@ static int nfs4_handle_exception(const struct nfs_server *server, int errorcode,
                case -NFS4ERR_SEQ_MISORDERED:
                        dprintk("%s ERROR: %d Reset session\n", __func__,
                                errorcode);
-                       set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state);
+                       nfs4_schedule_state_recovery(clp);
                        exception->retry = 1;
                        break;
 #endif /* !defined(CONFIG_NFS_V4_1) */
@@ -466,7 +466,7 @@ static int nfs41_setup_sequence(struct nfs4_session *session,
        tbl = &session->fc_slot_table;
 
        spin_lock(&tbl->slot_tbl_lock);
-       if (test_bit(NFS4CLNT_SESSION_RESET, &session->clp->cl_state)) {
+       if (test_bit(NFS4CLNT_SESSION_DRAINING, &session->clp->cl_state)) {
                /*
                 * The state manager will wait until the slot table is empty.
                 * Schedule the reset thread
@@ -3368,7 +3368,7 @@ _nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server,
                case -NFS4ERR_SEQ_MISORDERED:
                        dprintk("%s ERROR %d, Reset session\n", __func__,
                                task->tk_status);
-                       set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state);
+                       nfs4_schedule_state_recovery(clp);
                        task->tk_status = 0;
                        return -EAGAIN;
 #endif /* CONFIG_NFS_V4_1 */

diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 3c1433598b60296e847f61549c82a4213068e1ea..46c69e2248e356d2c2d1008c29f6d5009175b5d4 100644 (file)
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1094,6 +1094,8 @@ static int nfs4_recovery_handle_error(struct nfs_client *clp, int error)
                case -NFS4ERR_SEQ_FALSE_RETRY:
                case -NFS4ERR_SEQ_MISORDERED:
                        set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state);
+                       /* Zero session reset errors */
+                       return 0;
        }
        return error;
 }
@@ -1191,7 +1193,6 @@ static int nfs4_reset_session(struct nfs_client *clp)
                set_bit(NFS4CLNT_SESSION_DRAINING, &clp->cl_state);
                spin_unlock(&tbl->slot_tbl_lock);
                status = wait_for_completion_interruptible(&ses->complete);
-               clear_bit(NFS4CLNT_SESSION_DRAINING, &clp->cl_state);
                if (status) /* -ERESTARTSYS */
                        goto out;
        } else {
@@ -1212,6 +1213,7 @@ static int nfs4_reset_session(struct nfs_client *clp)
                /* fall through*/
 out:
        /* Wake up the next rpc task even on error */
+       clear_bit(NFS4CLNT_SESSION_DRAINING, &clp->cl_state);
        rpc_wake_up_next(&clp->cl_session->fc_slot_table.slot_tbl_waitq);
        return status;
 }