diff options
| -rw-r--r-- | fs/nfsd/nfs4callback.c | 14 | ||||
| -rw-r--r-- | fs/nfsd/nfs4proc.c | 3 | ||||
| -rw-r--r-- | fs/nfsd/nfs4recover.c | 7 | ||||
| -rw-r--r-- | fs/nfsd/nfs4state.c | 45 | ||||
| -rw-r--r-- | fs/nfsd/state.h | 11 |
5 files changed, 47 insertions, 33 deletions
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index cf6e4190e41c..0840fc4f7e4a 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -754,9 +754,9 @@ static void do_probe_callback(struct nfs4_client *clp) */ void nfsd4_probe_callback(struct nfs4_client *clp) { - /* XXX: atomicity? Also, should we be using cl_cb_flags? */ + /* XXX: atomicity? Also, should we be using cl_flags? */ clp->cl_cb_state = NFSD4_CB_UNKNOWN; - set_bit(NFSD4_CLIENT_CB_UPDATE, &clp->cl_cb_flags); + set_bit(NFSD4_CLIENT_CB_UPDATE, &clp->cl_flags); do_probe_callback(clp); } @@ -915,7 +915,7 @@ void nfsd4_destroy_callback_queue(void) /* must be called under the state lock */ void nfsd4_shutdown_callback(struct nfs4_client *clp) { - set_bit(NFSD4_CLIENT_KILL, &clp->cl_cb_flags); + set_bit(NFSD4_CLIENT_CB_KILL, &clp->cl_flags); /* * Note this won't actually result in a null callback; * instead, nfsd4_do_callback_rpc() will detect the killed @@ -966,15 +966,15 @@ static void nfsd4_process_cb_update(struct nfsd4_callback *cb) svc_xprt_put(clp->cl_cb_conn.cb_xprt); clp->cl_cb_conn.cb_xprt = NULL; } - if (test_bit(NFSD4_CLIENT_KILL, &clp->cl_cb_flags)) + if (test_bit(NFSD4_CLIENT_CB_KILL, &clp->cl_flags)) return; spin_lock(&clp->cl_lock); /* * Only serialized callback code is allowed to clear these * flags; main nfsd code can only set them: */ - BUG_ON(!clp->cl_cb_flags); - clear_bit(NFSD4_CLIENT_CB_UPDATE, &clp->cl_cb_flags); + BUG_ON(!(clp->cl_flags & NFSD4_CLIENT_CB_FLAG_MASK)); + clear_bit(NFSD4_CLIENT_CB_UPDATE, &clp->cl_flags); memcpy(&conn, &cb->cb_clp->cl_cb_conn, sizeof(struct nfs4_cb_conn)); c = __nfsd4_find_backchannel(clp); if (c) { @@ -1000,7 +1000,7 @@ void nfsd4_do_callback_rpc(struct work_struct *w) struct nfs4_client *clp = cb->cb_clp; struct rpc_clnt *clnt; - if (clp->cl_cb_flags) + if (clp->cl_flags & NFSD4_CLIENT_CB_FLAG_MASK) nfsd4_process_cb_update(cb); clnt = clp->cl_cb_client; diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index 2a9036670b8f..2ed14dfd00a2 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -319,7 +319,8 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, * Before RECLAIM_COMPLETE done, server should deny new lock */ if (nfsd4_has_session(cstate) && - !cstate->session->se_client->cl_firststate && + !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE, + &cstate->session->se_client->cl_flags) && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) return nfserr_grace; diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c index 0b3e875d1abd..6523809839c3 100644 --- a/fs/nfsd/nfs4recover.c +++ b/fs/nfsd/nfs4recover.c @@ -126,9 +126,8 @@ void nfsd4_create_clid_dir(struct nfs4_client *clp) dprintk("NFSD: nfsd4_create_clid_dir for \"%s\"\n", dname); - if (clp->cl_firststate) + if (test_and_set_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags)) return; - clp->cl_firststate = 1; if (!rec_file) return; status = nfs4_save_creds(&original_cred); @@ -271,13 +270,13 @@ nfsd4_remove_clid_dir(struct nfs4_client *clp) const struct cred *original_cred; int status; - if (!rec_file || !clp->cl_firststate) + if (!rec_file || !test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags)) return; status = mnt_want_write_file(rec_file); if (status) goto out; - clp->cl_firststate = 0; + clear_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags); status = nfs4_save_creds(&original_cred); if (status < 0) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index a0a2b535b0e0..8be612abd0d7 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -2069,7 +2069,8 @@ nfsd4_reclaim_complete(struct svc_rqst *rqstp, struct nfsd4_compound_state *csta nfs4_lock_state(); status = nfserr_complete_already; - if (cstate->session->se_client->cl_firststate) + if (test_and_set_bit(NFSD4_CLIENT_RECLAIM_COMPLETE, + &cstate->session->se_client->cl_flags)) goto out; status = nfserr_stale_clientid; @@ -2816,12 +2817,6 @@ static void nfs4_set_claim_prev(struct nfsd4_open *open, bool has_session) { open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED; - /* - * On a 4.1+ client, we don't create a state record for a client - * until it performs RECLAIM_COMPLETE: - */ - if (!has_session) - open->op_openowner->oo_owner.so_client->cl_firststate = 1; } /* Should we give out recallable state?: */ @@ -4462,7 +4457,7 @@ nfs4_has_reclaimed_state(const char *name, bool use_exchange_id) clp = find_confirmed_client_by_str(name, strhashval); if (!clp) return 0; - return clp->cl_firststate; + return test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags); } /* @@ -4507,18 +4502,11 @@ nfs4_release_reclaim(void) /* * called from OPEN, CLAIM_PREVIOUS with a new clientid. */ static struct nfs4_client_reclaim * -nfs4_find_reclaim_client(clientid_t *clid) +nfsd4_find_reclaim_client(struct nfs4_client *clp) { unsigned int strhashval; - struct nfs4_client *clp; struct nfs4_client_reclaim *crp = NULL; - - /* find clientid in conf_id_hashtbl */ - clp = find_confirmed_client(clid); - if (clp == NULL) - return NULL; - dprintk("NFSD: nfs4_find_reclaim_client for %.*s with recdir %s\n", clp->cl_name.len, clp->cl_name.data, clp->cl_recdir); @@ -4533,13 +4521,36 @@ nfs4_find_reclaim_client(clientid_t *clid) return NULL; } +static int +nfsd4_client_record_check(struct nfs4_client *clp) +{ + /* did we already find that this client is stable? */ + if (test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags)) + return 0; + + /* look for it in the reclaim hashtable otherwise */ + if (nfsd4_find_reclaim_client(clp)) { + set_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags); + return 0; + } + + return -ENOENT; +} + /* * Called from OPEN. Look for clientid in reclaim list. */ __be32 nfs4_check_open_reclaim(clientid_t *clid) { - return nfs4_find_reclaim_client(clid) ? nfs_ok : nfserr_reclaim_bad; + struct nfs4_client *clp; + + /* find clientid in conf_id_hashtbl */ + clp = find_confirmed_client(clid); + if (clp == NULL) + return nfserr_reclaim_bad; + + return nfsd4_client_record_check(clp) ? nfserr_reclaim_bad : nfs_ok; } #ifdef CONFIG_NFSD_FAULT_INJECTION diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h index 1e2b582bc9dc..115215723f76 100644 --- a/fs/nfsd/state.h +++ b/fs/nfsd/state.h @@ -236,14 +236,17 @@ struct nfs4_client { struct svc_cred cl_cred; /* setclientid principal */ clientid_t cl_clientid; /* generated by server */ nfs4_verifier cl_confirm; /* generated by server */ - u32 cl_firststate; /* recovery dir creation */ u32 cl_minorversion; /* for v4.0 and v4.1 callbacks: */ struct nfs4_cb_conn cl_cb_conn; -#define NFSD4_CLIENT_CB_UPDATE 1 -#define NFSD4_CLIENT_KILL 2 - unsigned long cl_cb_flags; +#define NFSD4_CLIENT_CB_UPDATE (0) +#define NFSD4_CLIENT_CB_KILL (1) +#define NFSD4_CLIENT_STABLE (2) /* client on stable storage */ +#define NFSD4_CLIENT_RECLAIM_COMPLETE (3) /* reclaim_complete done */ +#define NFSD4_CLIENT_CB_FLAG_MASK (1 << NFSD4_CLIENT_CB_UPDATE | \ + 1 << NFSD4_CLIENT_CB_KILL) + unsigned long cl_flags; struct rpc_clnt *cl_cb_client; u32 cl_cb_ident; #define NFSD4_CB_UP 0 |