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| author | Weston Andros Adamson <dros@netapp.com> | 2012-05-24 12:26:37 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-05-24 16:26:21 -0400 |
| commit | a9e64442f1399e9f6ceaeeeb03a26a560c949fac (patch) | |
| tree | 6348c1eb0e1ed43ebc5cb6b40bf843d7cb954c76 /fs/nfs | |
| parent | 7c44f1ae4a21458a1ea3d6482ffb3136f1df6d2b (diff) | |
| download | linux-a9e64442f1399e9f6ceaeeeb03a26a560c949fac.tar.bz2 | |
nfs41: Use BIND_CONN_TO_SESSION for CB_PATH_DOWN*
The state manager can handle SEQ4_STATUS_CB_PATH_DOWN* flags with a
BIND_CONN_TO_SESSION instead of destroying the session and creating a new one.
Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/nfs4_fs.h | 1 | ||||
| -rw-r--r-- | fs/nfs/nfs4state.c | 34 |
2 files changed, 31 insertions, 4 deletions
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 2c7f1cf85b8f..5fcb1ad65e5e 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -25,6 +25,7 @@ enum nfs4_client_state { NFS4CLNT_LEASE_CONFIRM, NFS4CLNT_SERVER_SCOPE_MISMATCH, NFS4CLNT_PURGE_STATE, + NFS4CLNT_BIND_CONN_TO_SESSION, }; enum nfs4_session_state { diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 32cce4a276e8..03fa802b5529 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1640,13 +1640,20 @@ static void nfs41_handle_recallable_state_revoked(struct nfs_client *clp) nfs_expire_all_delegations(clp); } -static void nfs41_handle_cb_path_down(struct nfs_client *clp) +static void nfs41_handle_backchannel_fault(struct nfs_client *clp) { nfs_expire_all_delegations(clp); if (test_and_set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state) == 0) nfs4_schedule_state_manager(clp); } +static void nfs41_handle_cb_path_down(struct nfs_client *clp) +{ + if (test_and_set_bit(NFS4CLNT_BIND_CONN_TO_SESSION, + &clp->cl_state) == 0) + nfs4_schedule_state_manager(clp); +} + void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags) { if (!flags) @@ -1664,9 +1671,10 @@ void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags) nfs41_handle_state_revoked(clp); if (flags & SEQ4_STATUS_RECALLABLE_STATE_REVOKED) nfs41_handle_recallable_state_revoked(clp); - if (flags & (SEQ4_STATUS_CB_PATH_DOWN | - SEQ4_STATUS_BACKCHANNEL_FAULT | - SEQ4_STATUS_CB_PATH_DOWN_SESSION)) + if (flags & SEQ4_STATUS_BACKCHANNEL_FAULT) + nfs41_handle_backchannel_fault(clp); + else if (flags & (SEQ4_STATUS_CB_PATH_DOWN | + SEQ4_STATUS_CB_PATH_DOWN_SESSION)) nfs41_handle_cb_path_down(clp); } @@ -1691,6 +1699,7 @@ static int nfs4_reset_session(struct nfs_client *clp) clear_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state); /* create_session negotiated new slot table */ clear_bit(NFS4CLNT_RECALL_SLOT, &clp->cl_state); + clear_bit(NFS4CLNT_BIND_CONN_TO_SESSION, &clp->cl_state); /* Let the state manager reestablish state */ if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) @@ -1727,10 +1736,19 @@ static int nfs4_recall_slot(struct nfs_client *clp) return 0; } +static int nfs4_bind_conn_to_session(struct nfs_client *clp) +{ + return nfs4_proc_bind_conn_to_session(clp); +} #else /* CONFIG_NFS_V4_1 */ static int nfs4_reset_session(struct nfs_client *clp) { return 0; } static int nfs4_end_drain_session(struct nfs_client *clp) { return 0; } static int nfs4_recall_slot(struct nfs_client *clp) { return 0; } + +static int nfs4_bind_conn_to_session(struct nfs_client *clp) +{ + return 0; +} #endif /* CONFIG_NFS_V4_1 */ /* Set NFS4CLNT_LEASE_EXPIRED for all v4.0 errors and for recoverable errors @@ -1814,6 +1832,14 @@ static void nfs4_state_manager(struct nfs_client *clp) goto out_error; } + /* Send BIND_CONN_TO_SESSION */ + if (test_and_clear_bit(NFS4CLNT_BIND_CONN_TO_SESSION, + &clp->cl_state) && nfs4_has_session(clp)) { + status = nfs4_bind_conn_to_session(clp); + if (status < 0) + goto out_error; + } + /* First recover reboot state... */ if (test_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state)) { status = nfs4_do_reclaim(clp, |