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| author | Alexandros Batsakis <batsakis@netapp.com> | 2009-12-05 13:46:14 -0500 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2009-12-05 13:46:14 -0500 |
| commit | 0629e370dd5819efa5cf8d418a8e6729efe388ef (patch) | |
| tree | 90883270cf5d677b13c81d0e6dbfaac38c5d18a9 /fs | |
| parent | 2449ea2e191123729b2dc37a06fcb9d6ea7e2736 (diff) | |
| download | linux-0629e370dd5819efa5cf8d418a8e6729efe388ef.tar.gz linux-0629e370dd5819efa5cf8d418a8e6729efe388ef.tar.bz2 linux-0629e370dd5819efa5cf8d418a8e6729efe388ef.zip | |
nfs41: check SEQUENCE status flag
the server can indicate a number of error conditions by setting the
appropriate bits in the SEQUENCE operation. The client re-establishes
state with the server when it receives one of those, with the action
depending on the specific case.
Signed-off-by: Alexandros Batsakis <batsakis@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfs/nfs4_fs.h | 1 | ||||
| -rw-r--r-- | fs/nfs/nfs4proc.c | 2 | ||||
| -rw-r--r-- | fs/nfs/nfs4state.c | 22 | ||||
| -rw-r--r-- | fs/nfs/nfs4xdr.c | 4 |
4 files changed, 27 insertions, 2 deletions
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 0d25a82451d9..9a866368896a 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -270,6 +270,7 @@ extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t); extern void nfs4_schedule_state_recovery(struct nfs_client *); extern void nfs4_schedule_state_manager(struct nfs_client *); extern int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state); +extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags); extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl); extern void nfs4_copy_stateid(nfs4_stateid *, struct nfs4_state *, fl_owner_t); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index d897b9e34f12..71993f122214 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -405,6 +405,8 @@ static void nfs41_sequence_done(struct nfs_client *clp, if (time_before(clp->cl_last_renewal, timestamp)) clp->cl_last_renewal = timestamp; spin_unlock(&clp->cl_lock); + /* Check sequence flags */ + nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); return; } out: diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 46c69e2248e3..a86f3acf3212 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1173,6 +1173,28 @@ static int nfs4_reclaim_lease(struct nfs_client *clp) } #ifdef CONFIG_NFS_V4_1 +void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags) +{ + if (!flags) + return; + else if (flags & SEQ4_STATUS_RESTART_RECLAIM_NEEDED) { + set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); + nfs4_state_start_reclaim_reboot(clp); + nfs4_schedule_state_recovery(clp); + } else if (flags & (SEQ4_STATUS_EXPIRED_ALL_STATE_REVOKED | + SEQ4_STATUS_EXPIRED_SOME_STATE_REVOKED | + SEQ4_STATUS_ADMIN_STATE_REVOKED | + SEQ4_STATUS_RECALLABLE_STATE_REVOKED | + SEQ4_STATUS_LEASE_MOVED)) { + set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); + nfs4_state_start_reclaim_nograce(clp); + nfs4_schedule_state_recovery(clp); + } else if (flags & (SEQ4_STATUS_CB_PATH_DOWN | + SEQ4_STATUS_BACKCHANNEL_FAULT | + SEQ4_STATUS_CB_PATH_DOWN_SESSION)) + nfs_expire_all_delegations(clp); +} + static void nfs4_session_recovery_handle_error(struct nfs_client *clp, int err) { switch (err) { diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 4ddd04a1113e..f740472370aa 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -4614,8 +4614,8 @@ static int decode_sequence(struct xdr_stream *xdr, dummy = be32_to_cpup(p++); /* target highest slot id - currently not processed */ dummy = be32_to_cpup(p++); - /* result flags - currently not processed */ - dummy = be32_to_cpup(p); + /* result flags */ + res->sr_status_flags = be32_to_cpup(p); status = 0; out_err: res->sr_status = status; |