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authorTrond Myklebust <Trond.Myklebust@netapp.com>2009-12-13 13:56:27 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2009-12-13 13:56:27 -0500
commit52c9948b1fd80381ba5a9a87dcc4fbe3cf4979b8 (patch)
tree7bca6a20560f428442f18450df0948774f982df0 /fs
parentf40542532e96dda5506eb76badea322f2ae4731c (diff)
parent190f38e5cedc910940b1da9015f00458c18f97b4 (diff)
Merge branch 'nfs-for-2.6.33'
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/callback.c13
-rw-r--r--fs/nfs/callback.h16
-rw-r--r--fs/nfs/callback_proc.c64
-rw-r--r--fs/nfs/callback_xdr.c34
-rw-r--r--fs/nfs/client.c14
-rw-r--r--fs/nfs/delegation.c77
-rw-r--r--fs/nfs/delegation.h7
-rw-r--r--fs/nfs/dir.c67
-rw-r--r--fs/nfs/dns_resolve.c4
-rw-r--r--fs/nfs/internal.h54
-rw-r--r--fs/nfs/nfs4_fs.h12
-rw-r--r--fs/nfs/nfs4proc.c458
-rw-r--r--fs/nfs/nfs4state.c225
-rw-r--r--fs/nfs/nfs4xdr.c135
-rw-r--r--fs/nfs/read.c12
-rw-r--r--fs/nfs/super.c104
-rw-r--r--fs/nfs/unlink.c2
-rw-r--r--fs/nfs/write.c8
18 files changed, 898 insertions, 408 deletions
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index 293fa0528a6e..73ab220354df 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -78,11 +78,6 @@ nfs4_callback_svc(void *vrqstp)
78 78
79 set_freezable(); 79 set_freezable();
80 80
81 /*
82 * FIXME: do we really need to run this under the BKL? If so, please
83 * add a comment about what it's intended to protect.
84 */
85 lock_kernel();
86 while (!kthread_should_stop()) { 81 while (!kthread_should_stop()) {
87 /* 82 /*
88 * Listen for a request on the socket 83 * Listen for a request on the socket
@@ -104,7 +99,6 @@ nfs4_callback_svc(void *vrqstp)
104 preverr = err; 99 preverr = err;
105 svc_process(rqstp); 100 svc_process(rqstp);
106 } 101 }
107 unlock_kernel();
108 return 0; 102 return 0;
109} 103}
110 104
@@ -160,11 +154,6 @@ nfs41_callback_svc(void *vrqstp)
160 154
161 set_freezable(); 155 set_freezable();
162 156
163 /*
164 * FIXME: do we really need to run this under the BKL? If so, please
165 * add a comment about what it's intended to protect.
166 */
167 lock_kernel();
168 while (!kthread_should_stop()) { 157 while (!kthread_should_stop()) {
169 prepare_to_wait(&serv->sv_cb_waitq, &wq, TASK_INTERRUPTIBLE); 158 prepare_to_wait(&serv->sv_cb_waitq, &wq, TASK_INTERRUPTIBLE);
170 spin_lock_bh(&serv->sv_cb_lock); 159 spin_lock_bh(&serv->sv_cb_lock);
@@ -183,7 +172,6 @@ nfs41_callback_svc(void *vrqstp)
183 } 172 }
184 finish_wait(&serv->sv_cb_waitq, &wq); 173 finish_wait(&serv->sv_cb_waitq, &wq);
185 } 174 }
186 unlock_kernel();
187 return 0; 175 return 0;
188} 176}
189 177
@@ -397,6 +385,7 @@ static int nfs_callback_authenticate(struct svc_rqst *rqstp)
397 */ 385 */
398static struct svc_version *nfs4_callback_version[] = { 386static struct svc_version *nfs4_callback_version[] = {
399 [1] = &nfs4_callback_version1, 387 [1] = &nfs4_callback_version1,
388 [4] = &nfs4_callback_version4,
400}; 389};
401 390
402static struct svc_stat nfs4_callback_stats; 391static struct svc_stat nfs4_callback_stats;
diff --git a/fs/nfs/callback.h b/fs/nfs/callback.h
index 07baa8254ca1..d4036be0b589 100644
--- a/fs/nfs/callback.h
+++ b/fs/nfs/callback.h
@@ -106,6 +106,19 @@ struct cb_sequenceres {
106extern unsigned nfs4_callback_sequence(struct cb_sequenceargs *args, 106extern unsigned nfs4_callback_sequence(struct cb_sequenceargs *args,
107 struct cb_sequenceres *res); 107 struct cb_sequenceres *res);
108 108
109extern int nfs41_validate_delegation_stateid(struct nfs_delegation *delegation,
110 const nfs4_stateid *stateid);
111
112#define RCA4_TYPE_MASK_RDATA_DLG 0
113#define RCA4_TYPE_MASK_WDATA_DLG 1
114
115struct cb_recallanyargs {
116 struct sockaddr *craa_addr;
117 uint32_t craa_objs_to_keep;
118 uint32_t craa_type_mask;
119};
120
121extern unsigned nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy);
109#endif /* CONFIG_NFS_V4_1 */ 122#endif /* CONFIG_NFS_V4_1 */
110 123
111extern __be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res); 124extern __be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res);
@@ -114,8 +127,9 @@ extern __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy);
114#ifdef CONFIG_NFS_V4 127#ifdef CONFIG_NFS_V4
115extern int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt); 128extern int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt);
116extern void nfs_callback_down(int minorversion); 129extern void nfs_callback_down(int minorversion);
130extern int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation,
131 const nfs4_stateid *stateid);
117#endif /* CONFIG_NFS_V4 */ 132#endif /* CONFIG_NFS_V4 */
118
119/* 133/*
120 * nfs41: Callbacks are expected to not cause substantial latency, 134 * nfs41: Callbacks are expected to not cause substantial latency,
121 * so we limit their concurrency to 1 by setting up the maximum number 135 * so we limit their concurrency to 1 by setting up the maximum number
diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c
index b7da1f54da68..defa9b4c470e 100644
--- a/fs/nfs/callback_proc.c
+++ b/fs/nfs/callback_proc.c
@@ -61,6 +61,16 @@ out:
61 return res->status; 61 return res->status;
62} 62}
63 63
64static int (*nfs_validate_delegation_stateid(struct nfs_client *clp))(struct nfs_delegation *, const nfs4_stateid *)
65{
66#if defined(CONFIG_NFS_V4_1)
67 if (clp->cl_minorversion > 0)
68 return nfs41_validate_delegation_stateid;
69#endif
70 return nfs4_validate_delegation_stateid;
71}
72
73
64__be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy) 74__be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy)
65{ 75{
66 struct nfs_client *clp; 76 struct nfs_client *clp;
@@ -81,7 +91,8 @@ __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy)
81 inode = nfs_delegation_find_inode(clp, &args->fh); 91 inode = nfs_delegation_find_inode(clp, &args->fh);
82 if (inode != NULL) { 92 if (inode != NULL) {
83 /* Set up a helper thread to actually return the delegation */ 93 /* Set up a helper thread to actually return the delegation */
84 switch(nfs_async_inode_return_delegation(inode, &args->stateid)) { 94 switch (nfs_async_inode_return_delegation(inode, &args->stateid,
95 nfs_validate_delegation_stateid(clp))) {
85 case 0: 96 case 0:
86 res = 0; 97 res = 0;
87 break; 98 break;
@@ -102,8 +113,31 @@ out:
102 return res; 113 return res;
103} 114}
104 115
116int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid)
117{
118 if (delegation == NULL || memcmp(delegation->stateid.data, stateid->data,
119 sizeof(delegation->stateid.data)) != 0)
120 return 0;
121 return 1;
122}
123
105#if defined(CONFIG_NFS_V4_1) 124#if defined(CONFIG_NFS_V4_1)
106 125
126int nfs41_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid)
127{
128 if (delegation == NULL)
129 return 0;
130
131 /* seqid is 4-bytes long */
132 if (((u32 *) &stateid->data)[0] != 0)
133 return 0;
134 if (memcmp(&delegation->stateid.data[4], &stateid->data[4],
135 sizeof(stateid->data)-4))
136 return 0;
137
138 return 1;
139}
140
107/* 141/*
108 * Validate the sequenceID sent by the server. 142 * Validate the sequenceID sent by the server.
109 * Return success if the sequenceID is one more than what we last saw on 143 * Return success if the sequenceID is one more than what we last saw on
@@ -227,4 +261,32 @@ out:
227 return res->csr_status; 261 return res->csr_status;
228} 262}
229 263
264unsigned nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy)
265{
266 struct nfs_client *clp;
267 int status;
268 fmode_t flags = 0;
269
270 status = htonl(NFS4ERR_OP_NOT_IN_SESSION);
271 clp = nfs_find_client(args->craa_addr, 4);
272 if (clp == NULL)
273 goto out;
274
275 dprintk("NFS: RECALL_ANY callback request from %s\n",
276 rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR));
277
278 if (test_bit(RCA4_TYPE_MASK_RDATA_DLG, (const unsigned long *)
279 &args->craa_type_mask))
280 flags = FMODE_READ;
281 if (test_bit(RCA4_TYPE_MASK_WDATA_DLG, (const unsigned long *)
282 &args->craa_type_mask))
283 flags |= FMODE_WRITE;
284
285 if (flags)
286 nfs_expire_all_delegation_types(clp, flags);
287 status = htonl(NFS4_OK);
288out:
289 dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
290 return status;
291}
230#endif /* CONFIG_NFS_V4_1 */ 292#endif /* CONFIG_NFS_V4_1 */
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index 76b0aa0f73bf..8e1a2511c8be 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -23,6 +23,7 @@
23#if defined(CONFIG_NFS_V4_1) 23#if defined(CONFIG_NFS_V4_1)
24#define CB_OP_SEQUENCE_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \ 24#define CB_OP_SEQUENCE_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \
25 4 + 1 + 3) 25 4 + 1 + 3)
26#define CB_OP_RECALLANY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ)
26#endif /* CONFIG_NFS_V4_1 */ 27#endif /* CONFIG_NFS_V4_1 */
27 28
28#define NFSDBG_FACILITY NFSDBG_CALLBACK 29#define NFSDBG_FACILITY NFSDBG_CALLBACK
@@ -326,6 +327,25 @@ out_free:
326 goto out; 327 goto out;
327} 328}
328 329
330static unsigned decode_recallany_args(struct svc_rqst *rqstp,
331 struct xdr_stream *xdr,
332 struct cb_recallanyargs *args)
333{
334 uint32_t *p;
335
336 args->craa_addr = svc_addr(rqstp);
337 p = read_buf(xdr, 4);
338 if (unlikely(p == NULL))
339 return htonl(NFS4ERR_BADXDR);
340 args->craa_objs_to_keep = ntohl(*p++);
341 p = read_buf(xdr, 4);
342 if (unlikely(p == NULL))
343 return htonl(NFS4ERR_BADXDR);
344 args->craa_type_mask = ntohl(*p);
345
346 return 0;
347}
348
329#endif /* CONFIG_NFS_V4_1 */ 349#endif /* CONFIG_NFS_V4_1 */
330 350
331static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) 351static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
@@ -533,6 +553,7 @@ preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op)
533 case OP_CB_GETATTR: 553 case OP_CB_GETATTR:
534 case OP_CB_RECALL: 554 case OP_CB_RECALL:
535 case OP_CB_SEQUENCE: 555 case OP_CB_SEQUENCE:
556 case OP_CB_RECALL_ANY:
536 *op = &callback_ops[op_nr]; 557 *op = &callback_ops[op_nr];
537 break; 558 break;
538 559
@@ -540,7 +561,6 @@ preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op)
540 case OP_CB_NOTIFY_DEVICEID: 561 case OP_CB_NOTIFY_DEVICEID:
541 case OP_CB_NOTIFY: 562 case OP_CB_NOTIFY:
542 case OP_CB_PUSH_DELEG: 563 case OP_CB_PUSH_DELEG:
543 case OP_CB_RECALL_ANY:
544 case OP_CB_RECALLABLE_OBJ_AVAIL: 564 case OP_CB_RECALLABLE_OBJ_AVAIL:
545 case OP_CB_RECALL_SLOT: 565 case OP_CB_RECALL_SLOT:
546 case OP_CB_WANTS_CANCELLED: 566 case OP_CB_WANTS_CANCELLED:
@@ -688,6 +708,11 @@ static struct callback_op callback_ops[] = {
688 .encode_res = (callback_encode_res_t)encode_cb_sequence_res, 708 .encode_res = (callback_encode_res_t)encode_cb_sequence_res,
689 .res_maxsize = CB_OP_SEQUENCE_RES_MAXSZ, 709 .res_maxsize = CB_OP_SEQUENCE_RES_MAXSZ,
690 }, 710 },
711 [OP_CB_RECALL_ANY] = {
712 .process_op = (callback_process_op_t)nfs4_callback_recallany,
713 .decode_args = (callback_decode_arg_t)decode_recallany_args,
714 .res_maxsize = CB_OP_RECALLANY_RES_MAXSZ,
715 },
691#endif /* CONFIG_NFS_V4_1 */ 716#endif /* CONFIG_NFS_V4_1 */
692}; 717};
693 718
@@ -718,3 +743,10 @@ struct svc_version nfs4_callback_version1 = {
718 .vs_dispatch = NULL, 743 .vs_dispatch = NULL,
719}; 744};
720 745
746struct svc_version nfs4_callback_version4 = {
747 .vs_vers = 4,
748 .vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1),
749 .vs_proc = nfs4_callback_procedures1,
750 .vs_xdrsize = NFS4_CALLBACK_XDRSIZE,
751 .vs_dispatch = NULL,
752};
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 99ea196f071f..ee77713ce68b 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -1260,10 +1260,20 @@ error:
1260static void nfs4_session_set_rwsize(struct nfs_server *server) 1260static void nfs4_session_set_rwsize(struct nfs_server *server)
1261{ 1261{
1262#ifdef CONFIG_NFS_V4_1 1262#ifdef CONFIG_NFS_V4_1
1263 struct nfs4_session *sess;
1264 u32 server_resp_sz;
1265 u32 server_rqst_sz;
1266
1263 if (!nfs4_has_session(server->nfs_client)) 1267 if (!nfs4_has_session(server->nfs_client))
1264 return; 1268 return;
1265 server->rsize = server->nfs_client->cl_session->fc_attrs.max_resp_sz; 1269 sess = server->nfs_client->cl_session;
1266 server->wsize = server->nfs_client->cl_session->fc_attrs.max_rqst_sz; 1270 server_resp_sz = sess->fc_attrs.max_resp_sz - nfs41_maxread_overhead;
1271 server_rqst_sz = sess->fc_attrs.max_rqst_sz - nfs41_maxwrite_overhead;
1272
1273 if (server->rsize > server_resp_sz)
1274 server->rsize = server_resp_sz;
1275 if (server->wsize > server_rqst_sz)
1276 server->wsize = server_rqst_sz;
1267#endif /* CONFIG_NFS_V4_1 */ 1277#endif /* CONFIG_NFS_V4_1 */
1268} 1278}
1269 1279
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index 6dd48a4405b4..2563bebc4c67 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -92,7 +92,7 @@ out:
92 return status; 92 return status;
93} 93}
94 94
95static void nfs_delegation_claim_opens(struct inode *inode, const nfs4_stateid *stateid) 95static int nfs_delegation_claim_opens(struct inode *inode, const nfs4_stateid *stateid)
96{ 96{
97 struct nfs_inode *nfsi = NFS_I(inode); 97 struct nfs_inode *nfsi = NFS_I(inode);
98 struct nfs_open_context *ctx; 98 struct nfs_open_context *ctx;
@@ -116,10 +116,11 @@ again:
116 err = nfs_delegation_claim_locks(ctx, state); 116 err = nfs_delegation_claim_locks(ctx, state);
117 put_nfs_open_context(ctx); 117 put_nfs_open_context(ctx);
118 if (err != 0) 118 if (err != 0)
119 return; 119 return err;
120 goto again; 120 goto again;
121 } 121 }
122 spin_unlock(&inode->i_lock); 122 spin_unlock(&inode->i_lock);
123 return 0;
123} 124}
124 125
125/* 126/*
@@ -261,30 +262,34 @@ static void nfs_msync_inode(struct inode *inode)
261/* 262/*
262 * Basic procedure for returning a delegation to the server 263 * Basic procedure for returning a delegation to the server
263 */ 264 */
264static int __nfs_inode_return_delegation(struct inode *inode, struct nfs_delegation *delegation) 265static int __nfs_inode_return_delegation(struct inode *inode, struct nfs_delegation *delegation, int issync)
265{ 266{
266 struct nfs_inode *nfsi = NFS_I(inode); 267 struct nfs_inode *nfsi = NFS_I(inode);
268 int err;
267 269
268 nfs_msync_inode(inode);
269 /* 270 /*
270 * Guard against new delegated open/lock/unlock calls and against 271 * Guard against new delegated open/lock/unlock calls and against
271 * state recovery 272 * state recovery
272 */ 273 */
273 down_write(&nfsi->rwsem); 274 down_write(&nfsi->rwsem);
274 nfs_delegation_claim_opens(inode, &delegation->stateid); 275 err = nfs_delegation_claim_opens(inode, &delegation->stateid);
275 up_write(&nfsi->rwsem); 276 up_write(&nfsi->rwsem);
276 nfs_msync_inode(inode); 277 if (err)
278 goto out;
277 279
278 return nfs_do_return_delegation(inode, delegation, 1); 280 err = nfs_do_return_delegation(inode, delegation, issync);
281out:
282 return err;
279} 283}
280 284
281/* 285/*
282 * Return all delegations that have been marked for return 286 * Return all delegations that have been marked for return
283 */ 287 */
284void nfs_client_return_marked_delegations(struct nfs_client *clp) 288int nfs_client_return_marked_delegations(struct nfs_client *clp)
285{ 289{
286 struct nfs_delegation *delegation; 290 struct nfs_delegation *delegation;
287 struct inode *inode; 291 struct inode *inode;
292 int err = 0;
288 293
289restart: 294restart:
290 rcu_read_lock(); 295 rcu_read_lock();
@@ -298,12 +303,18 @@ restart:
298 delegation = nfs_detach_delegation_locked(NFS_I(inode), NULL); 303 delegation = nfs_detach_delegation_locked(NFS_I(inode), NULL);
299 spin_unlock(&clp->cl_lock); 304 spin_unlock(&clp->cl_lock);
300 rcu_read_unlock(); 305 rcu_read_unlock();
301 if (delegation != NULL) 306 if (delegation != NULL) {
302 __nfs_inode_return_delegation(inode, delegation); 307 filemap_flush(inode->i_mapping);
308 err = __nfs_inode_return_delegation(inode, delegation, 0);
309 }
303 iput(inode); 310 iput(inode);
304 goto restart; 311 if (!err)
312 goto restart;
313 set_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state);
314 return err;
305 } 315 }
306 rcu_read_unlock(); 316 rcu_read_unlock();
317 return 0;
307} 318}
308 319
309/* 320/*
@@ -338,8 +349,10 @@ int nfs_inode_return_delegation(struct inode *inode)
338 spin_lock(&clp->cl_lock); 349 spin_lock(&clp->cl_lock);
339 delegation = nfs_detach_delegation_locked(nfsi, NULL); 350 delegation = nfs_detach_delegation_locked(nfsi, NULL);
340 spin_unlock(&clp->cl_lock); 351 spin_unlock(&clp->cl_lock);
341 if (delegation != NULL) 352 if (delegation != NULL) {
342 err = __nfs_inode_return_delegation(inode, delegation); 353 nfs_msync_inode(inode);
354 err = __nfs_inode_return_delegation(inode, delegation, 1);
355 }
343 } 356 }
344 return err; 357 return err;
345} 358}
@@ -368,33 +381,47 @@ void nfs_super_return_all_delegations(struct super_block *sb)
368 spin_unlock(&delegation->lock); 381 spin_unlock(&delegation->lock);
369 } 382 }
370 rcu_read_unlock(); 383 rcu_read_unlock();
371 nfs_client_return_marked_delegations(clp); 384 if (nfs_client_return_marked_delegations(clp) != 0)
385 nfs4_schedule_state_manager(clp);
372} 386}
373 387
374static void nfs_client_mark_return_all_delegations(struct nfs_client *clp) 388static
389void nfs_client_mark_return_all_delegation_types(struct nfs_client *clp, fmode_t flags)
375{ 390{
376 struct nfs_delegation *delegation; 391 struct nfs_delegation *delegation;
377 392
378 rcu_read_lock(); 393 rcu_read_lock();
379 list_for_each_entry_rcu(delegation, &clp->cl_delegations, super_list) { 394 list_for_each_entry_rcu(delegation, &clp->cl_delegations, super_list) {
380 set_bit(NFS_DELEGATION_RETURN, &delegation->flags); 395 if ((delegation->type == (FMODE_READ|FMODE_WRITE)) && !(flags & FMODE_WRITE))
381 set_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state); 396 continue;
397 if (delegation->type & flags)
398 nfs_mark_return_delegation(clp, delegation);
382 } 399 }
383 rcu_read_unlock(); 400 rcu_read_unlock();
384} 401}
385 402
403static void nfs_client_mark_return_all_delegations(struct nfs_client *clp)
404{
405 nfs_client_mark_return_all_delegation_types(clp, FMODE_READ|FMODE_WRITE);
406}
407
386static void nfs_delegation_run_state_manager(struct nfs_client *clp) 408static void nfs_delegation_run_state_manager(struct nfs_client *clp)
387{ 409{
388 if (test_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state)) 410 if (test_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state))
389 nfs4_schedule_state_manager(clp); 411 nfs4_schedule_state_manager(clp);
390} 412}
391 413
392void nfs_expire_all_delegations(struct nfs_client *clp) 414void nfs_expire_all_delegation_types(struct nfs_client *clp, fmode_t flags)
393{ 415{
394 nfs_client_mark_return_all_delegations(clp); 416 nfs_client_mark_return_all_delegation_types(clp, flags);
395 nfs_delegation_run_state_manager(clp); 417 nfs_delegation_run_state_manager(clp);
396} 418}
397 419
420void nfs_expire_all_delegations(struct nfs_client *clp)
421{
422 nfs_expire_all_delegation_types(clp, FMODE_READ|FMODE_WRITE);
423}
424
398/* 425/*
399 * Return all delegations following an NFS4ERR_CB_PATH_DOWN error. 426 * Return all delegations following an NFS4ERR_CB_PATH_DOWN error.
400 */ 427 */
@@ -413,8 +440,7 @@ static void nfs_client_mark_return_unreferenced_delegations(struct nfs_client *c
413 list_for_each_entry_rcu(delegation, &clp->cl_delegations, super_list) { 440 list_for_each_entry_rcu(delegation, &clp->cl_delegations, super_list) {
414 if (test_and_clear_bit(NFS_DELEGATION_REFERENCED, &delegation->flags)) 441 if (test_and_clear_bit(NFS_DELEGATION_REFERENCED, &delegation->flags))
415 continue; 442 continue;
416 set_bit(NFS_DELEGATION_RETURN, &delegation->flags); 443 nfs_mark_return_delegation(clp, delegation);
417 set_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state);
418 } 444 }
419 rcu_read_unlock(); 445 rcu_read_unlock();
420} 446}
@@ -428,18 +454,21 @@ void nfs_expire_unreferenced_delegations(struct nfs_client *clp)
428/* 454/*
429 * Asynchronous delegation recall! 455 * Asynchronous delegation recall!
430 */ 456 */
431int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid) 457int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid,
458 int (*validate_stateid)(struct nfs_delegation *delegation,
459 const nfs4_stateid *stateid))
432{ 460{
433 struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; 461 struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
434 struct nfs_delegation *delegation; 462 struct nfs_delegation *delegation;
435 463
436 rcu_read_lock(); 464 rcu_read_lock();
437 delegation = rcu_dereference(NFS_I(inode)->delegation); 465 delegation = rcu_dereference(NFS_I(inode)->delegation);
438 if (delegation == NULL || memcmp(delegation->stateid.data, stateid->data, 466
439 sizeof(delegation->stateid.data)) != 0) { 467 if (!validate_stateid(delegation, stateid)) {
440 rcu_read_unlock(); 468 rcu_read_unlock();
441 return -ENOENT; 469 return -ENOENT;
442 } 470 }
471
443 nfs_mark_return_delegation(clp, delegation); 472 nfs_mark_return_delegation(clp, delegation);
444 rcu_read_unlock(); 473 rcu_read_unlock();
445 nfs_delegation_run_state_manager(clp); 474 nfs_delegation_run_state_manager(clp);
diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h
index 09f383795174..944b627ec6e1 100644
--- a/fs/nfs/delegation.h
+++ b/fs/nfs/delegation.h
@@ -34,15 +34,18 @@ enum {
34int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res); 34int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res);
35void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res); 35void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res);
36int nfs_inode_return_delegation(struct inode *inode); 36int nfs_inode_return_delegation(struct inode *inode);
37int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid); 37int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid,
38 int (*validate_stateid)(struct nfs_delegation *delegation,
39 const nfs4_stateid *stateid));
38void nfs_inode_return_delegation_noreclaim(struct inode *inode); 40void nfs_inode_return_delegation_noreclaim(struct inode *inode);
39 41
40struct inode *nfs_delegation_find_inode(struct nfs_client *clp, const struct nfs_fh *fhandle); 42struct inode *nfs_delegation_find_inode(struct nfs_client *clp, const struct nfs_fh *fhandle);
41void nfs_super_return_all_delegations(struct super_block *sb); 43void nfs_super_return_all_delegations(struct super_block *sb);
42void nfs_expire_all_delegations(struct nfs_client *clp); 44void nfs_expire_all_delegations(struct nfs_client *clp);
45void nfs_expire_all_delegation_types(struct nfs_client *clp, fmode_t flags);
43void nfs_expire_unreferenced_delegations(struct nfs_client *clp); 46void nfs_expire_unreferenced_delegations(struct nfs_client *clp);
44void nfs_handle_cb_pathdown(struct nfs_client *clp); 47void nfs_handle_cb_pathdown(struct nfs_client *clp);
45void nfs_client_return_marked_delegations(struct nfs_client *clp); 48int nfs_client_return_marked_delegations(struct nfs_client *clp);
46 49
47void nfs_delegation_mark_reclaim(struct nfs_client *clp); 50void nfs_delegation_mark_reclaim(struct nfs_client *clp);
48void nfs_delegation_reap_unclaimed(struct nfs_client *clp); 51void nfs_delegation_reap_unclaimed(struct nfs_client *clp);
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 7cb298525eef..2c5ace4f00a7 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1579,55 +1579,46 @@ static int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
1579 struct dentry *dentry = NULL, *rehash = NULL; 1579 struct dentry *dentry = NULL, *rehash = NULL;
1580 int error = -EBUSY; 1580 int error = -EBUSY;
1581 1581
1582 /*
1583 * To prevent any new references to the target during the rename,
1584 * we unhash the dentry and free the inode in advance.
1585 */
1586 if (!d_unhashed(new_dentry)) {
1587 d_drop(new_dentry);
1588 rehash = new_dentry;
1589 }
1590
1591 dfprintk(VFS, "NFS: rename(%s/%s -> %s/%s, ct=%d)\n", 1582 dfprintk(VFS, "NFS: rename(%s/%s -> %s/%s, ct=%d)\n",
1592 old_dentry->d_parent->d_name.name, old_dentry->d_name.name, 1583 old_dentry->d_parent->d_name.name, old_dentry->d_name.name,
1593 new_dentry->d_parent->d_name.name, new_dentry->d_name.name, 1584 new_dentry->d_parent->d_name.name, new_dentry->d_name.name,
1594 atomic_read(&new_dentry->d_count)); 1585 atomic_read(&new_dentry->d_count));
1595 1586
1596 /* 1587 /*
1597 * First check whether the target is busy ... we can't 1588 * For non-directories, check whether the target is busy and if so,
1598 * safely do _any_ rename if the target is in use. 1589 * make a copy of the dentry and then do a silly-rename. If the
1599 * 1590 * silly-rename succeeds, the copied dentry is hashed and becomes
1600 * For files, make a copy of the dentry and then do a 1591 * the new target.
1601 * silly-rename. If the silly-rename succeeds, the
1602 * copied dentry is hashed and becomes the new target.
1603 */ 1592 */
1604 if (!new_inode) 1593 if (new_inode && !S_ISDIR(new_inode->i_mode)) {
1605 goto go_ahead; 1594 /*
1606 if (S_ISDIR(new_inode->i_mode)) { 1595 * To prevent any new references to the target during the
1607 error = -EISDIR; 1596 * rename, we unhash the dentry in advance.
1608 if (!S_ISDIR(old_inode->i_mode)) 1597 */
1609 goto out; 1598 if (!d_unhashed(new_dentry)) {
1610 } else if (atomic_read(&new_dentry->d_count) > 2) { 1599 d_drop(new_dentry);
1611 int err; 1600 rehash = new_dentry;
1612 /* copy the target dentry's name */ 1601 }
1613 dentry = d_alloc(new_dentry->d_parent, 1602
1614 &new_dentry->d_name); 1603 if (atomic_read(&new_dentry->d_count) > 2) {
1615 if (!dentry) 1604 int err;
1616 goto out; 1605
1606 /* copy the target dentry's name */
1607 dentry = d_alloc(new_dentry->d_parent,
1608 &new_dentry->d_name);
1609 if (!dentry)
1610 goto out;
1617 1611
1618 /* silly-rename the existing target ... */ 1612 /* silly-rename the existing target ... */
1619 err = nfs_sillyrename(new_dir, new_dentry); 1613 err = nfs_sillyrename(new_dir, new_dentry);
1620 if (!err) { 1614 if (err)
1621 new_dentry = rehash = dentry; 1615 goto out;
1616
1617 new_dentry = dentry;
1622 new_inode = NULL; 1618 new_inode = NULL;
1623 /* instantiate the replacement target */ 1619 }
1624 d_instantiate(new_dentry, NULL);
1625 } else if (atomic_read(&new_dentry->d_count) > 1)
1626 /* dentry still busy? */
1627 goto out;
1628 } 1620 }
1629 1621
1630go_ahead:
1631 /* 1622 /*
1632 * ... prune child dentries and writebacks if needed. 1623 * ... prune child dentries and writebacks if needed.
1633 */ 1624 */
diff --git a/fs/nfs/dns_resolve.c b/fs/nfs/dns_resolve.c
index f4d54ba97cc6..95e1ca765d47 100644
--- a/fs/nfs/dns_resolve.c
+++ b/fs/nfs/dns_resolve.c
@@ -146,7 +146,7 @@ static int nfs_dns_show(struct seq_file *m, struct cache_detail *cd,
146 return 0; 146 return 0;
147} 147}
148 148
149struct nfs_dns_ent *nfs_dns_lookup(struct cache_detail *cd, 149static struct nfs_dns_ent *nfs_dns_lookup(struct cache_detail *cd,
150 struct nfs_dns_ent *key) 150 struct nfs_dns_ent *key)
151{ 151{
152 struct cache_head *ch; 152 struct cache_head *ch;
@@ -159,7 +159,7 @@ struct nfs_dns_ent *nfs_dns_lookup(struct cache_detail *cd,
159 return container_of(ch, struct nfs_dns_ent, h); 159 return container_of(ch, struct nfs_dns_ent, h);
160} 160}
161 161
162struct nfs_dns_ent *nfs_dns_update(struct cache_detail *cd, 162static struct nfs_dns_ent *nfs_dns_update(struct cache_detail *cd,
163 struct nfs_dns_ent *new, 163 struct nfs_dns_ent *new,
164 struct nfs_dns_ent *key) 164 struct nfs_dns_ent *key)
165{ 165{
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index e21b1bb9972f..29e464d23b32 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -30,6 +30,15 @@ static inline int nfs4_has_session(const struct nfs_client *clp)
30 return 0; 30 return 0;
31} 31}
32 32
33static inline int nfs4_has_persistent_session(const struct nfs_client *clp)
34{
35#ifdef CONFIG_NFS_V4_1
36 if (nfs4_has_session(clp))
37 return (clp->cl_session->flags & SESSION4_PERSIST);
38#endif /* CONFIG_NFS_V4_1 */
39 return 0;
40}
41
33struct nfs_clone_mount { 42struct nfs_clone_mount {
34 const struct super_block *sb; 43 const struct super_block *sb;
35 const struct dentry *dentry; 44 const struct dentry *dentry;
@@ -156,6 +165,7 @@ struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent, struct dentr
156 165
157/* callback_xdr.c */ 166/* callback_xdr.c */
158extern struct svc_version nfs4_callback_version1; 167extern struct svc_version nfs4_callback_version1;
168extern struct svc_version nfs4_callback_version4;
159 169
160/* pagelist.c */ 170/* pagelist.c */
161extern int __init nfs_init_nfspagecache(void); 171extern int __init nfs_init_nfspagecache(void);
@@ -177,24 +187,14 @@ extern __be32 * nfs_decode_dirent(__be32 *, struct nfs_entry *, int);
177extern struct rpc_procinfo nfs3_procedures[]; 187extern struct rpc_procinfo nfs3_procedures[];
178extern __be32 *nfs3_decode_dirent(__be32 *, struct nfs_entry *, int); 188extern __be32 *nfs3_decode_dirent(__be32 *, struct nfs_entry *, int);
179 189
180/* nfs4proc.c */
181static inline void nfs4_restart_rpc(struct rpc_task *task,
182 const struct nfs_client *clp)
183{
184#ifdef CONFIG_NFS_V4_1
185 if (nfs4_has_session(clp) &&
186 test_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state)) {
187 rpc_restart_call_prepare(task);
188 return;
189 }
190#endif /* CONFIG_NFS_V4_1 */
191 rpc_restart_call(task);
192}
193
194/* nfs4xdr.c */ 190/* nfs4xdr.c */
195#ifdef CONFIG_NFS_V4 191#ifdef CONFIG_NFS_V4
196extern __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus); 192extern __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus);
197#endif 193#endif
194#ifdef CONFIG_NFS_V4_1
195extern const u32 nfs41_maxread_overhead;
196extern const u32 nfs41_maxwrite_overhead;
197#endif
198 198
199/* nfs4proc.c */ 199/* nfs4proc.c */
200#ifdef CONFIG_NFS_V4 200#ifdef CONFIG_NFS_V4
@@ -273,20 +273,6 @@ extern int _nfs4_call_sync_session(struct nfs_server *server,
273 struct nfs4_sequence_res *res, 273 struct nfs4_sequence_res *res,
274 int cache_reply); 274 int cache_reply);
275 275
276#ifdef CONFIG_NFS_V4_1
277extern void nfs41_sequence_free_slot(const struct nfs_client *,
278 struct nfs4_sequence_res *res);
279#endif /* CONFIG_NFS_V4_1 */
280
281static inline void nfs4_sequence_free_slot(const struct nfs_client *clp,
282 struct nfs4_sequence_res *res)
283{
284#ifdef CONFIG_NFS_V4_1
285 if (nfs4_has_session(clp))
286 nfs41_sequence_free_slot(clp, res);
287#endif /* CONFIG_NFS_V4_1 */
288}
289
290/* 276/*
291 * Determine the device name as a string 277 * Determine the device name as a string
292 */ 278 */
@@ -380,3 +366,15 @@ unsigned int nfs_page_array_len(unsigned int base, size_t len)
380 return ((unsigned long)len + (unsigned long)base + 366 return ((unsigned long)len + (unsigned long)base +
381 PAGE_SIZE - 1) >> PAGE_SHIFT; 367 PAGE_SIZE - 1) >> PAGE_SHIFT;
382} 368}
369
370/*
371 * Helper for restarting RPC calls in the possible presence of NFSv4.1
372 * sessions.
373 */
374static inline void nfs_restart_rpc(struct rpc_task *task, const struct nfs_client *clp)
375{
376 if (nfs4_has_session(clp))
377 rpc_restart_call_prepare(task);
378 else
379 rpc_restart_call(task);
380}
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 6ea07a3c75d4..7e57b04e4014 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -44,7 +44,8 @@ enum nfs4_client_state {
44 NFS4CLNT_RECLAIM_REBOOT, 44 NFS4CLNT_RECLAIM_REBOOT,
45 NFS4CLNT_RECLAIM_NOGRACE, 45 NFS4CLNT_RECLAIM_NOGRACE,
46 NFS4CLNT_DELEGRETURN, 46 NFS4CLNT_DELEGRETURN,
47 NFS4CLNT_SESSION_SETUP, 47 NFS4CLNT_SESSION_RESET,
48 NFS4CLNT_SESSION_DRAINING,
48}; 49};
49 50
50/* 51/*
@@ -180,6 +181,7 @@ struct nfs4_state_recovery_ops {
180 int (*recover_lock)(struct nfs4_state *, struct file_lock *); 181 int (*recover_lock)(struct nfs4_state *, struct file_lock *);
181 int (*establish_clid)(struct nfs_client *, struct rpc_cred *); 182 int (*establish_clid)(struct nfs_client *, struct rpc_cred *);
182 struct rpc_cred * (*get_clid_cred)(struct nfs_client *); 183 struct rpc_cred * (*get_clid_cred)(struct nfs_client *);
184 int (*reclaim_complete)(struct nfs_client *);
183}; 185};
184 186
185struct nfs4_state_maintenance_ops { 187struct nfs4_state_maintenance_ops {
@@ -200,9 +202,11 @@ extern ssize_t nfs4_listxattr(struct dentry *, char *, size_t);
200/* nfs4proc.c */ 202/* nfs4proc.c */
201extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *); 203extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *);
202extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct rpc_cred *); 204extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct rpc_cred *);
205extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred);
203extern int nfs4_proc_async_renew(struct nfs_client *, struct rpc_cred *); 206extern int nfs4_proc_async_renew(struct nfs_client *, struct rpc_cred *);
204extern int nfs4_proc_renew(struct nfs_client *, struct rpc_cred *); 207extern int nfs4_proc_renew(struct nfs_client *, struct rpc_cred *);
205extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *); 208extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *);
209extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *);
206extern int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait); 210extern int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait);
207extern struct dentry *nfs4_atomic_open(struct inode *, struct dentry *, struct nameidata *); 211extern struct dentry *nfs4_atomic_open(struct inode *, struct dentry *, struct nameidata *);
208extern int nfs4_open_revalidate(struct inode *, struct dentry *, int, struct nameidata *); 212extern int nfs4_open_revalidate(struct inode *, struct dentry *, int, struct nameidata *);
@@ -218,9 +222,11 @@ extern int nfs4_setup_sequence(struct nfs_client *clp,
218 int cache_reply, struct rpc_task *task); 222 int cache_reply, struct rpc_task *task);
219extern void nfs4_destroy_session(struct nfs4_session *session); 223extern void nfs4_destroy_session(struct nfs4_session *session);
220extern struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp); 224extern struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp);
221extern int nfs4_proc_create_session(struct nfs_client *, int reset); 225extern int nfs4_proc_create_session(struct nfs_client *);
222extern int nfs4_proc_destroy_session(struct nfs4_session *); 226extern int nfs4_proc_destroy_session(struct nfs4_session *);
223extern int nfs4_init_session(struct nfs_server *server); 227extern int nfs4_init_session(struct nfs_server *server);
228extern int nfs4_proc_get_lease_time(struct nfs_client *clp,
229 struct nfs_fsinfo *fsinfo);
224#else /* CONFIG_NFS_v4_1 */ 230#else /* CONFIG_NFS_v4_1 */
225static inline int nfs4_setup_sequence(struct nfs_client *clp, 231static inline int nfs4_setup_sequence(struct nfs_client *clp,
226 struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, 232 struct nfs4_sequence_args *args, struct nfs4_sequence_res *res,
@@ -267,6 +273,7 @@ extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t);
267extern void nfs4_schedule_state_recovery(struct nfs_client *); 273extern void nfs4_schedule_state_recovery(struct nfs_client *);
268extern void nfs4_schedule_state_manager(struct nfs_client *); 274extern void nfs4_schedule_state_manager(struct nfs_client *);
269extern int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state); 275extern int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state);
276extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags);
270extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); 277extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp);
271extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl); 278extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl);
272extern void nfs4_copy_stateid(nfs4_stateid *, struct nfs4_state *, fl_owner_t); 279extern void nfs4_copy_stateid(nfs4_stateid *, struct nfs4_state *, fl_owner_t);
@@ -287,6 +294,7 @@ struct nfs4_mount_data;
287 294
288/* callback_xdr.c */ 295/* callback_xdr.c */
289extern struct svc_version nfs4_callback_version1; 296extern struct svc_version nfs4_callback_version1;
297extern struct svc_version nfs4_callback_version4;
290 298
291#else 299#else
292 300
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 741a562177fc..9f5f11ecfd93 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -270,11 +270,18 @@ static int nfs4_handle_exception(const struct nfs_server *server, int errorcode,
270 case -NFS4ERR_SEQ_MISORDERED: 270 case -NFS4ERR_SEQ_MISORDERED:
271 dprintk("%s ERROR: %d Reset session\n", __func__, 271 dprintk("%s ERROR: %d Reset session\n", __func__,
272 errorcode); 272 errorcode);
273 set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state); 273 nfs4_schedule_state_recovery(clp);
274 exception->retry = 1; 274 exception->retry = 1;
275 /* FALLTHROUGH */ 275 break;
276#endif /* !defined(CONFIG_NFS_V4_1) */ 276#endif /* !defined(CONFIG_NFS_V4_1) */
277 case -NFS4ERR_FILE_OPEN: 277 case -NFS4ERR_FILE_OPEN:
278 if (exception->timeout > HZ) {
279 /* We have retried a decent amount, time to
280 * fail
281 */
282 ret = -EBUSY;
283 break;
284 }
278 case -NFS4ERR_GRACE: 285 case -NFS4ERR_GRACE:
279 case -NFS4ERR_DELAY: 286 case -NFS4ERR_DELAY:
280 ret = nfs4_delay(server->client, &exception->timeout); 287 ret = nfs4_delay(server->client, &exception->timeout);
@@ -311,48 +318,54 @@ static void renew_lease(const struct nfs_server *server, unsigned long timestamp
311 * so we need to scan down from highest_used_slotid to 0 looking for the now 318 * so we need to scan down from highest_used_slotid to 0 looking for the now
312 * highest slotid in use. 319 * highest slotid in use.
313 * If none found, highest_used_slotid is set to -1. 320 * If none found, highest_used_slotid is set to -1.
321 *
322 * Must be called while holding tbl->slot_tbl_lock
314 */ 323 */
315static void 324static void
316nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid) 325nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid)
317{ 326{
318 int slotid = free_slotid; 327 int slotid = free_slotid;
319 328
320 spin_lock(&tbl->slot_tbl_lock);
321 /* clear used bit in bitmap */ 329 /* clear used bit in bitmap */
322 __clear_bit(slotid, tbl->used_slots); 330 __clear_bit(slotid, tbl->used_slots);
323 331
324 /* update highest_used_slotid when it is freed */ 332 /* update highest_used_slotid when it is freed */
325 if (slotid == tbl->highest_used_slotid) { 333 if (slotid == tbl->highest_used_slotid) {
326 slotid = find_last_bit(tbl->used_slots, tbl->max_slots); 334 slotid = find_last_bit(tbl->used_slots, tbl->max_slots);
327 if (slotid >= 0 && slotid < tbl->max_slots) 335 if (slotid < tbl->max_slots)
328 tbl->highest_used_slotid = slotid; 336 tbl->highest_used_slotid = slotid;
329 else 337 else
330 tbl->highest_used_slotid = -1; 338 tbl->highest_used_slotid = -1;
331 } 339 }
332 rpc_wake_up_next(&tbl->slot_tbl_waitq);
333 spin_unlock(&tbl->slot_tbl_lock);
334 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, 340 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__,
335 free_slotid, tbl->highest_used_slotid); 341 free_slotid, tbl->highest_used_slotid);
336} 342}
337 343
338void nfs41_sequence_free_slot(const struct nfs_client *clp, 344static void nfs41_sequence_free_slot(const struct nfs_client *clp,
339 struct nfs4_sequence_res *res) 345 struct nfs4_sequence_res *res)
340{ 346{
341 struct nfs4_slot_table *tbl; 347 struct nfs4_slot_table *tbl;
342 348
343 if (!nfs4_has_session(clp)) {
344 dprintk("%s: No session\n", __func__);
345 return;
346 }
347 tbl = &clp->cl_session->fc_slot_table; 349 tbl = &clp->cl_session->fc_slot_table;
348 if (res->sr_slotid == NFS4_MAX_SLOT_TABLE) { 350 if (res->sr_slotid == NFS4_MAX_SLOT_TABLE) {
349 dprintk("%s: No slot\n", __func__);
350 /* just wake up the next guy waiting since 351 /* just wake up the next guy waiting since
351 * we may have not consumed a slot after all */ 352 * we may have not consumed a slot after all */
352 rpc_wake_up_next(&tbl->slot_tbl_waitq); 353 dprintk("%s: No slot\n", __func__);
353 return; 354 return;
354 } 355 }
356
357 spin_lock(&tbl->slot_tbl_lock);
355 nfs4_free_slot(tbl, res->sr_slotid); 358 nfs4_free_slot(tbl, res->sr_slotid);
359
360 /* Signal state manager thread if session is drained */
361 if (test_bit(NFS4CLNT_SESSION_DRAINING, &clp->cl_state)) {
362 if (tbl->highest_used_slotid == -1) {
363 dprintk("%s COMPLETE: Session Drained\n", __func__);
364 complete(&clp->cl_session->complete);
365 }
366 } else
367 rpc_wake_up_next(&tbl->slot_tbl_waitq);
368 spin_unlock(&tbl->slot_tbl_lock);
356 res->sr_slotid = NFS4_MAX_SLOT_TABLE; 369 res->sr_slotid = NFS4_MAX_SLOT_TABLE;
357} 370}
358 371
@@ -377,10 +390,10 @@ static void nfs41_sequence_done(struct nfs_client *clp,
377 if (res->sr_slotid == NFS4_MAX_SLOT_TABLE) 390 if (res->sr_slotid == NFS4_MAX_SLOT_TABLE)
378 goto out; 391 goto out;
379 392
380 tbl = &clp->cl_session->fc_slot_table; 393 /* Check the SEQUENCE operation status */
381 slot = tbl->slots + res->sr_slotid;
382
383 if (res->sr_status == 0) { 394 if (res->sr_status == 0) {
395 tbl = &clp->cl_session->fc_slot_table;
396 slot = tbl->slots + res->sr_slotid;
384 /* Update the slot's sequence and clientid lease timer */ 397 /* Update the slot's sequence and clientid lease timer */
385 ++slot->seq_nr; 398 ++slot->seq_nr;
386 timestamp = res->sr_renewal_time; 399 timestamp = res->sr_renewal_time;
@@ -388,7 +401,8 @@ static void nfs41_sequence_done(struct nfs_client *clp,
388 if (time_before(clp->cl_last_renewal, timestamp)) 401 if (time_before(clp->cl_last_renewal, timestamp))
389 clp->cl_last_renewal = timestamp; 402 clp->cl_last_renewal = timestamp;
390 spin_unlock(&clp->cl_lock); 403 spin_unlock(&clp->cl_lock);
391 return; 404 /* Check sequence flags */
405 nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
392 } 406 }
393out: 407out:
394 /* The session may be reset by one of the error handlers. */ 408 /* The session may be reset by one of the error handlers. */
@@ -429,24 +443,6 @@ out:
429 return ret_id; 443 return ret_id;
430} 444}
431 445
432static int nfs4_recover_session(struct nfs4_session *session)
433{
434 struct nfs_client *clp = session->clp;
435 unsigned int loop;
436 int ret;
437
438 for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {
439 ret = nfs4_wait_clnt_recover(clp);
440 if (ret != 0)
441 break;
442 if (!test_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state))
443 break;
444 nfs4_schedule_state_manager(clp);
445 ret = -EIO;
446 }
447 return ret;
448}
449
450static int nfs41_setup_sequence(struct nfs4_session *session, 446static int nfs41_setup_sequence(struct nfs4_session *session,
451 struct nfs4_sequence_args *args, 447 struct nfs4_sequence_args *args,
452 struct nfs4_sequence_res *res, 448 struct nfs4_sequence_res *res,
@@ -455,7 +451,6 @@ static int nfs41_setup_sequence(struct nfs4_session *session,
455{ 451{
456 struct nfs4_slot *slot; 452 struct nfs4_slot *slot;
457 struct nfs4_slot_table *tbl; 453 struct nfs4_slot_table *tbl;
458 int status = 0;
459 u8 slotid; 454 u8 slotid;
460 455
461 dprintk("--> %s\n", __func__); 456 dprintk("--> %s\n", __func__);
@@ -468,21 +463,15 @@ static int nfs41_setup_sequence(struct nfs4_session *session,
468 tbl = &session->fc_slot_table; 463 tbl = &session->fc_slot_table;
469 464
470 spin_lock(&tbl->slot_tbl_lock); 465 spin_lock(&tbl->slot_tbl_lock);
471 if (test_bit(NFS4CLNT_SESSION_SETUP, &session->clp->cl_state)) { 466 if (test_bit(NFS4CLNT_SESSION_DRAINING, &session->clp->cl_state)) {
472 if (tbl->highest_used_slotid != -1) { 467 /*
473 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); 468 * The state manager will wait until the slot table is empty.
474 spin_unlock(&tbl->slot_tbl_lock); 469 * Schedule the reset thread
475 dprintk("<-- %s: Session reset: draining\n", __func__); 470 */
476 return -EAGAIN; 471 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
477 }
478
479 /* The slot table is empty; start the reset thread */
480 dprintk("%s Session Reset\n", __func__);
481 spin_unlock(&tbl->slot_tbl_lock); 472 spin_unlock(&tbl->slot_tbl_lock);
482 status = nfs4_recover_session(session); 473 dprintk("%s Schedule Session Reset\n", __func__);
483 if (status) 474 return -EAGAIN;
484 return status;
485 spin_lock(&tbl->slot_tbl_lock);
486 } 475 }
487 476
488 slotid = nfs4_find_slot(tbl, task); 477 slotid = nfs4_find_slot(tbl, task);
@@ -527,7 +516,7 @@ int nfs4_setup_sequence(struct nfs_client *clp,
527 goto out; 516 goto out;
528 ret = nfs41_setup_sequence(clp->cl_session, args, res, cache_reply, 517 ret = nfs41_setup_sequence(clp->cl_session, args, res, cache_reply,
529 task); 518 task);
530 if (ret != -EAGAIN) { 519 if (ret && ret != -EAGAIN) {
531 /* terminate rpc task */ 520 /* terminate rpc task */
532 task->tk_status = ret; 521 task->tk_status = ret;
533 task->tk_action = NULL; 522 task->tk_action = NULL;
@@ -561,7 +550,6 @@ static void nfs41_call_sync_done(struct rpc_task *task, void *calldata)
561 struct nfs41_call_sync_data *data = calldata; 550 struct nfs41_call_sync_data *data = calldata;
562 551
563 nfs41_sequence_done(data->clp, data->seq_res, task->tk_status); 552 nfs41_sequence_done(data->clp, data->seq_res, task->tk_status);
564 nfs41_sequence_free_slot(data->clp, data->seq_res);
565} 553}
566 554
567struct rpc_call_ops nfs41_call_sync_ops = { 555struct rpc_call_ops nfs41_call_sync_ops = {
@@ -637,15 +625,6 @@ static void nfs4_sequence_done(const struct nfs_server *server,
637#endif /* CONFIG_NFS_V4_1 */ 625#endif /* CONFIG_NFS_V4_1 */
638} 626}
639 627
640/* no restart, therefore free slot here */
641static void nfs4_sequence_done_free_slot(const struct nfs_server *server,
642 struct nfs4_sequence_res *res,
643 int rpc_status)
644{
645 nfs4_sequence_done(server, res, rpc_status);
646 nfs4_sequence_free_slot(server->nfs_client, res);
647}
648
649static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) 628static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
650{ 629{
651 struct nfs_inode *nfsi = NFS_I(dir); 630 struct nfs_inode *nfsi = NFS_I(dir);
@@ -720,9 +699,15 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
720 p->o_arg.bitmask = server->attr_bitmask; 699 p->o_arg.bitmask = server->attr_bitmask;
721 p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; 700 p->o_arg.claim = NFS4_OPEN_CLAIM_NULL;
722 if (flags & O_EXCL) { 701 if (flags & O_EXCL) {
723 u32 *s = (u32 *) p->o_arg.u.verifier.data; 702 if (nfs4_has_persistent_session(server->nfs_client)) {
724 s[0] = jiffies; 703 /* GUARDED */
725 s[1] = current->pid; 704 p->o_arg.u.attrs = &p->attrs;
705 memcpy(&p->attrs, attrs, sizeof(p->attrs));
706 } else { /* EXCLUSIVE4_1 */
707 u32 *s = (u32 *) p->o_arg.u.verifier.data;
708 s[0] = jiffies;
709 s[1] = current->pid;
710 }
726 } else if (flags & O_CREAT) { 711 } else if (flags & O_CREAT) {
727 p->o_arg.u.attrs = &p->attrs; 712 p->o_arg.u.attrs = &p->attrs;
728 memcpy(&p->attrs, attrs, sizeof(p->attrs)); 713 memcpy(&p->attrs, attrs, sizeof(p->attrs));
@@ -776,13 +761,16 @@ static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode
776 goto out; 761 goto out;
777 switch (mode & (FMODE_READ|FMODE_WRITE)) { 762 switch (mode & (FMODE_READ|FMODE_WRITE)) {
778 case FMODE_READ: 763 case FMODE_READ:
779 ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0; 764 ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0
765 && state->n_rdonly != 0;
780 break; 766 break;
781 case FMODE_WRITE: 767 case FMODE_WRITE:
782 ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0; 768 ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0
769 && state->n_wronly != 0;
783 break; 770 break;
784 case FMODE_READ|FMODE_WRITE: 771 case FMODE_READ|FMODE_WRITE:
785 ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0; 772 ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0
773 && state->n_rdwr != 0;
786 } 774 }
787out: 775out:
788 return ret; 776 return ret;
@@ -1183,6 +1171,14 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state
1183 case -ENOENT: 1171 case -ENOENT:
1184 case -ESTALE: 1172 case -ESTALE:
1185 goto out; 1173 goto out;
1174 case -NFS4ERR_BADSESSION:
1175 case -NFS4ERR_BADSLOT:
1176 case -NFS4ERR_BAD_HIGH_SLOT:
1177 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
1178 case -NFS4ERR_DEADSESSION:
1179 nfs4_schedule_state_recovery(
1180 server->nfs_client);
1181 goto out;
1186 case -NFS4ERR_STALE_CLIENTID: 1182 case -NFS4ERR_STALE_CLIENTID:
1187 case -NFS4ERR_STALE_STATEID: 1183 case -NFS4ERR_STALE_STATEID:
1188 case -NFS4ERR_EXPIRED: 1184 case -NFS4ERR_EXPIRED:
@@ -1336,8 +1332,8 @@ static void nfs4_open_done(struct rpc_task *task, void *calldata)
1336 1332
1337 data->rpc_status = task->tk_status; 1333 data->rpc_status = task->tk_status;
1338 1334
1339 nfs4_sequence_done_free_slot(data->o_arg.server, &data->o_res.seq_res, 1335 nfs4_sequence_done(data->o_arg.server, &data->o_res.seq_res,
1340 task->tk_status); 1336 task->tk_status);
1341 1337
1342 if (RPC_ASSASSINATED(task)) 1338 if (RPC_ASSASSINATED(task))
1343 return; 1339 return;
@@ -1488,7 +1484,7 @@ static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *s
1488 return ret; 1484 return ret;
1489} 1485}
1490 1486
1491static inline int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) 1487static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
1492{ 1488{
1493 struct nfs_server *server = NFS_SERVER(state->inode); 1489 struct nfs_server *server = NFS_SERVER(state->inode);
1494 struct nfs4_exception exception = { }; 1490 struct nfs4_exception exception = { };
@@ -1496,10 +1492,16 @@ static inline int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4
1496 1492
1497 do { 1493 do {
1498 err = _nfs4_open_expired(ctx, state); 1494 err = _nfs4_open_expired(ctx, state);
1499 if (err != -NFS4ERR_DELAY) 1495 switch (err) {
1500 break; 1496 default:
1501 nfs4_handle_exception(server, err, &exception); 1497 goto out;
1498 case -NFS4ERR_GRACE:
1499 case -NFS4ERR_DELAY:
1500 nfs4_handle_exception(server, err, &exception);
1501 err = 0;
1502 }
1502 } while (exception.retry); 1503 } while (exception.retry);
1504out:
1503 return err; 1505 return err;
1504} 1506}
1505 1507
@@ -1712,6 +1714,18 @@ static void nfs4_free_closedata(void *data)
1712 kfree(calldata); 1714 kfree(calldata);
1713} 1715}
1714 1716
1717static void nfs4_close_clear_stateid_flags(struct nfs4_state *state,
1718 fmode_t fmode)
1719{
1720 spin_lock(&state->owner->so_lock);
1721 if (!(fmode & FMODE_READ))
1722 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
1723 if (!(fmode & FMODE_WRITE))
1724 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
1725 clear_bit(NFS_O_RDWR_STATE, &state->flags);
1726 spin_unlock(&state->owner->so_lock);
1727}
1728
1715static void nfs4_close_done(struct rpc_task *task, void *data) 1729static void nfs4_close_done(struct rpc_task *task, void *data)
1716{ 1730{
1717 struct nfs4_closedata *calldata = data; 1731 struct nfs4_closedata *calldata = data;
@@ -1728,6 +1742,8 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
1728 case 0: 1742 case 0:
1729 nfs_set_open_stateid(state, &calldata->res.stateid, 0); 1743 nfs_set_open_stateid(state, &calldata->res.stateid, 0);
1730 renew_lease(server, calldata->timestamp); 1744 renew_lease(server, calldata->timestamp);
1745 nfs4_close_clear_stateid_flags(state,
1746 calldata->arg.fmode);
1731 break; 1747 break;
1732 case -NFS4ERR_STALE_STATEID: 1748 case -NFS4ERR_STALE_STATEID:
1733 case -NFS4ERR_OLD_STATEID: 1749 case -NFS4ERR_OLD_STATEID:
@@ -1737,11 +1753,10 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
1737 break; 1753 break;
1738 default: 1754 default:
1739 if (nfs4_async_handle_error(task, server, state) == -EAGAIN) { 1755 if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
1740 nfs4_restart_rpc(task, server->nfs_client); 1756 nfs_restart_rpc(task, server->nfs_client);
1741 return; 1757 return;
1742 } 1758 }
1743 } 1759 }
1744 nfs4_sequence_free_slot(server->nfs_client, &calldata->res.seq_res);
1745 nfs_refresh_inode(calldata->inode, calldata->res.fattr); 1760 nfs_refresh_inode(calldata->inode, calldata->res.fattr);
1746} 1761}
1747 1762
@@ -1749,38 +1764,39 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
1749{ 1764{
1750 struct nfs4_closedata *calldata = data; 1765 struct nfs4_closedata *calldata = data;
1751 struct nfs4_state *state = calldata->state; 1766 struct nfs4_state *state = calldata->state;
1752 int clear_rd, clear_wr, clear_rdwr; 1767 int call_close = 0;
1753 1768
1754 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) 1769 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
1755 return; 1770 return;
1756 1771
1757 clear_rd = clear_wr = clear_rdwr = 0; 1772 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
1773 calldata->arg.fmode = FMODE_READ|FMODE_WRITE;
1758 spin_lock(&state->owner->so_lock); 1774 spin_lock(&state->owner->so_lock);
1759 /* Calculate the change in open mode */ 1775 /* Calculate the change in open mode */
1760 if (state->n_rdwr == 0) { 1776 if (state->n_rdwr == 0) {
1761 if (state->n_rdonly == 0) { 1777 if (state->n_rdonly == 0) {
1762 clear_rd |= test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags); 1778 call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags);
1763 clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); 1779 call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
1780 calldata->arg.fmode &= ~FMODE_READ;
1764 } 1781 }
1765 if (state->n_wronly == 0) { 1782 if (state->n_wronly == 0) {
1766 clear_wr |= test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags); 1783 call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags);
1767 clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); 1784 call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
1785 calldata->arg.fmode &= ~FMODE_WRITE;
1768 } 1786 }
1769 } 1787 }
1770 spin_unlock(&state->owner->so_lock); 1788 spin_unlock(&state->owner->so_lock);
1771 if (!clear_rd && !clear_wr && !clear_rdwr) { 1789
1790 if (!call_close) {
1772 /* Note: exit _without_ calling nfs4_close_done */ 1791 /* Note: exit _without_ calling nfs4_close_done */
1773 task->tk_action = NULL; 1792 task->tk_action = NULL;
1774 return; 1793 return;
1775 } 1794 }
1795
1796 if (calldata->arg.fmode == 0)
1797 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE];
1798
1776 nfs_fattr_init(calldata->res.fattr); 1799 nfs_fattr_init(calldata->res.fattr);
1777 if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
1778 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
1779 calldata->arg.fmode = FMODE_READ;
1780 } else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
1781 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
1782 calldata->arg.fmode = FMODE_WRITE;
1783 }
1784 calldata->timestamp = jiffies; 1800 calldata->timestamp = jiffies;
1785 if (nfs4_setup_sequence((NFS_SERVER(calldata->inode))->nfs_client, 1801 if (nfs4_setup_sequence((NFS_SERVER(calldata->inode))->nfs_client,
1786 &calldata->arg.seq_args, &calldata->res.seq_res, 1802 &calldata->arg.seq_args, &calldata->res.seq_res,
@@ -1981,7 +1997,7 @@ out_drop:
1981 return 0; 1997 return 0;
1982} 1998}
1983 1999
1984void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) 2000static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
1985{ 2001{
1986 if (ctx->state == NULL) 2002 if (ctx->state == NULL)
1987 return; 2003 return;
@@ -2532,7 +2548,6 @@ static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
2532 nfs4_sequence_done(res->server, &res->seq_res, task->tk_status); 2548 nfs4_sequence_done(res->server, &res->seq_res, task->tk_status);
2533 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) 2549 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
2534 return 0; 2550 return 0;
2535 nfs4_sequence_free_slot(res->server->nfs_client, &res->seq_res);
2536 update_changeattr(dir, &res->cinfo); 2551 update_changeattr(dir, &res->cinfo);
2537 nfs_post_op_update_inode(dir, &res->dir_attr); 2552 nfs_post_op_update_inode(dir, &res->dir_attr);
2538 return 1; 2553 return 1;
@@ -2971,11 +2986,10 @@ static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
2971 2986
2972 dprintk("--> %s\n", __func__); 2987 dprintk("--> %s\n", __func__);
2973 2988
2974 /* nfs4_sequence_free_slot called in the read rpc_call_done */
2975 nfs4_sequence_done(server, &data->res.seq_res, task->tk_status); 2989 nfs4_sequence_done(server, &data->res.seq_res, task->tk_status);
2976 2990
2977 if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { 2991 if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) {
2978 nfs4_restart_rpc(task, server->nfs_client); 2992 nfs_restart_rpc(task, server->nfs_client);
2979 return -EAGAIN; 2993 return -EAGAIN;
2980 } 2994 }
2981 2995
@@ -2995,12 +3009,11 @@ static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
2995{ 3009{
2996 struct inode *inode = data->inode; 3010 struct inode *inode = data->inode;
2997 3011
2998 /* slot is freed in nfs_writeback_done */
2999 nfs4_sequence_done(NFS_SERVER(inode), &data->res.seq_res, 3012 nfs4_sequence_done(NFS_SERVER(inode), &data->res.seq_res,
3000 task->tk_status); 3013 task->tk_status);
3001 3014
3002 if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { 3015 if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) {
3003 nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client); 3016 nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
3004 return -EAGAIN; 3017 return -EAGAIN;
3005 } 3018 }
3006 if (task->tk_status >= 0) { 3019 if (task->tk_status >= 0) {
@@ -3028,11 +3041,9 @@ static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
3028 nfs4_sequence_done(NFS_SERVER(inode), &data->res.seq_res, 3041 nfs4_sequence_done(NFS_SERVER(inode), &data->res.seq_res,
3029 task->tk_status); 3042 task->tk_status);
3030 if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { 3043 if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) {
3031 nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client); 3044 nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
3032 return -EAGAIN; 3045 return -EAGAIN;
3033 } 3046 }
3034 nfs4_sequence_free_slot(NFS_SERVER(inode)->nfs_client,
3035 &data->res.seq_res);
3036 nfs_refresh_inode(inode, data->res.fattr); 3047 nfs_refresh_inode(inode, data->res.fattr);
3037 return 0; 3048 return 0;
3038} 3049}
@@ -3350,7 +3361,7 @@ _nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server,
3350 case -NFS4ERR_SEQ_MISORDERED: 3361 case -NFS4ERR_SEQ_MISORDERED:
3351 dprintk("%s ERROR %d, Reset session\n", __func__, 3362 dprintk("%s ERROR %d, Reset session\n", __func__,
3352 task->tk_status); 3363 task->tk_status);
3353 set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state); 3364 nfs4_schedule_state_recovery(clp);
3354 task->tk_status = 0; 3365 task->tk_status = 0;
3355 return -EAGAIN; 3366 return -EAGAIN;
3356#endif /* CONFIG_NFS_V4_1 */ 3367#endif /* CONFIG_NFS_V4_1 */
@@ -3483,12 +3494,23 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
3483{ 3494{
3484 struct nfs4_delegreturndata *data = calldata; 3495 struct nfs4_delegreturndata *data = calldata;
3485 3496
3486 nfs4_sequence_done_free_slot(data->res.server, &data->res.seq_res, 3497 nfs4_sequence_done(data->res.server, &data->res.seq_res,
3487 task->tk_status); 3498 task->tk_status);
3488 3499
3489 data->rpc_status = task->tk_status; 3500 switch (task->tk_status) {
3490 if (data->rpc_status == 0) 3501 case -NFS4ERR_STALE_STATEID:
3502 case -NFS4ERR_EXPIRED:
3503 case 0:
3491 renew_lease(data->res.server, data->timestamp); 3504 renew_lease(data->res.server, data->timestamp);
3505 break;
3506 default:
3507 if (nfs4_async_handle_error(task, data->res.server, NULL) ==
3508 -EAGAIN) {
3509 nfs_restart_rpc(task, data->res.server->nfs_client);
3510 return;
3511 }
3512 }
3513 data->rpc_status = task->tk_status;
3492} 3514}
3493 3515
3494static void nfs4_delegreturn_release(void *calldata) 3516static void nfs4_delegreturn_release(void *calldata)
@@ -3741,11 +3763,9 @@ static void nfs4_locku_done(struct rpc_task *task, void *data)
3741 break; 3763 break;
3742 default: 3764 default:
3743 if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) 3765 if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN)
3744 nfs4_restart_rpc(task, 3766 nfs_restart_rpc(task,
3745 calldata->server->nfs_client); 3767 calldata->server->nfs_client);
3746 } 3768 }
3747 nfs4_sequence_free_slot(calldata->server->nfs_client,
3748 &calldata->res.seq_res);
3749} 3769}
3750 3770
3751static void nfs4_locku_prepare(struct rpc_task *task, void *data) 3771static void nfs4_locku_prepare(struct rpc_task *task, void *data)
@@ -3927,8 +3947,8 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata)
3927 3947
3928 dprintk("%s: begin!\n", __func__); 3948 dprintk("%s: begin!\n", __func__);
3929 3949
3930 nfs4_sequence_done_free_slot(data->server, &data->res.seq_res, 3950 nfs4_sequence_done(data->server, &data->res.seq_res,
3931 task->tk_status); 3951 task->tk_status);
3932 3952
3933 data->rpc_status = task->tk_status; 3953 data->rpc_status = task->tk_status;
3934 if (RPC_ASSASSINATED(task)) 3954 if (RPC_ASSASSINATED(task))
@@ -4049,10 +4069,16 @@ static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request
4049 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) 4069 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
4050 return 0; 4070 return 0;
4051 err = _nfs4_do_setlk(state, F_SETLK, request, 0); 4071 err = _nfs4_do_setlk(state, F_SETLK, request, 0);
4052 if (err != -NFS4ERR_DELAY) 4072 switch (err) {
4053 break; 4073 default:
4054 nfs4_handle_exception(server, err, &exception); 4074 goto out;
4075 case -NFS4ERR_GRACE:
4076 case -NFS4ERR_DELAY:
4077 nfs4_handle_exception(server, err, &exception);
4078 err = 0;
4079 }
4055 } while (exception.retry); 4080 } while (exception.retry);
4081out:
4056 return err; 4082 return err;
4057} 4083}
4058 4084
@@ -4172,6 +4198,11 @@ int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl)
4172 case -NFS4ERR_EXPIRED: 4198 case -NFS4ERR_EXPIRED:
4173 case -NFS4ERR_STALE_CLIENTID: 4199 case -NFS4ERR_STALE_CLIENTID:
4174 case -NFS4ERR_STALE_STATEID: 4200 case -NFS4ERR_STALE_STATEID:
4201 case -NFS4ERR_BADSESSION:
4202 case -NFS4ERR_BADSLOT:
4203 case -NFS4ERR_BAD_HIGH_SLOT:
4204 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
4205 case -NFS4ERR_DEADSESSION:
4175 nfs4_schedule_state_recovery(server->nfs_client); 4206 nfs4_schedule_state_recovery(server->nfs_client);
4176 goto out; 4207 goto out;
4177 case -ERESTARTSYS: 4208 case -ERESTARTSYS:
@@ -4296,7 +4327,7 @@ int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
4296 * NFS4ERR_BADSESSION in the sequence operation, and will therefore 4327 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4297 * be in some phase of session reset. 4328 * be in some phase of session reset.
4298 */ 4329 */
4299static int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) 4330int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
4300{ 4331{
4301 nfs4_verifier verifier; 4332 nfs4_verifier verifier;
4302 struct nfs41_exchange_id_args args = { 4333 struct nfs41_exchange_id_args args = {
@@ -4318,6 +4349,9 @@ static int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
4318 dprintk("--> %s\n", __func__); 4349 dprintk("--> %s\n", __func__);
4319 BUG_ON(clp == NULL); 4350 BUG_ON(clp == NULL);
4320 4351
4352 /* Remove server-only flags */
4353 args.flags &= ~EXCHGID4_FLAG_CONFIRMED_R;
4354
4321 p = (u32 *)verifier.data; 4355 p = (u32 *)verifier.data;
4322 *p++ = htonl((u32)clp->cl_boot_time.tv_sec); 4356 *p++ = htonl((u32)clp->cl_boot_time.tv_sec);
4323 *p = htonl((u32)clp->cl_boot_time.tv_nsec); 4357 *p = htonl((u32)clp->cl_boot_time.tv_nsec);
@@ -4389,10 +4423,9 @@ static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata)
4389 dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); 4423 dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status);
4390 rpc_delay(task, NFS4_POLL_RETRY_MIN); 4424 rpc_delay(task, NFS4_POLL_RETRY_MIN);
4391 task->tk_status = 0; 4425 task->tk_status = 0;
4392 nfs4_restart_rpc(task, data->clp); 4426 nfs_restart_rpc(task, data->clp);
4393 return; 4427 return;
4394 } 4428 }
4395 nfs41_sequence_free_slot(data->clp, &data->res->lr_seq_res);
4396 dprintk("<-- %s\n", __func__); 4429 dprintk("<-- %s\n", __func__);
4397} 4430}
4398 4431
@@ -4465,7 +4498,6 @@ static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, int max_slots,
4465 spin_lock(&tbl->slot_tbl_lock); 4498 spin_lock(&tbl->slot_tbl_lock);
4466 for (i = 0; i < max_slots; ++i) 4499 for (i = 0; i < max_slots; ++i)
4467 tbl->slots[i].seq_nr = ivalue; 4500 tbl->slots[i].seq_nr = ivalue;
4468 tbl->highest_used_slotid = -1;
4469 spin_unlock(&tbl->slot_tbl_lock); 4501 spin_unlock(&tbl->slot_tbl_lock);
4470 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, 4502 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__,
4471 tbl, tbl->slots, tbl->max_slots); 4503 tbl, tbl->slots, tbl->max_slots);
@@ -4515,7 +4547,6 @@ static void nfs4_destroy_slot_tables(struct nfs4_session *session)
4515static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, 4547static int nfs4_init_slot_table(struct nfs4_slot_table *tbl,
4516 int max_slots, int ivalue) 4548 int max_slots, int ivalue)
4517{ 4549{
4518 int i;
4519 struct nfs4_slot *slot; 4550 struct nfs4_slot *slot;
4520 int ret = -ENOMEM; 4551 int ret = -ENOMEM;
4521 4552
@@ -4526,18 +4557,9 @@ static int nfs4_init_slot_table(struct nfs4_slot_table *tbl,
4526 slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_KERNEL); 4557 slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_KERNEL);
4527 if (!slot) 4558 if (!slot)
4528 goto out; 4559 goto out;
4529 for (i = 0; i < max_slots; ++i)
4530 slot[i].seq_nr = ivalue;
4531 ret = 0; 4560 ret = 0;
4532 4561
4533 spin_lock(&tbl->slot_tbl_lock); 4562 spin_lock(&tbl->slot_tbl_lock);
4534 if (tbl->slots != NULL) {
4535 spin_unlock(&tbl->slot_tbl_lock);
4536 dprintk("%s: slot table already initialized. tbl=%p slots=%p\n",
4537 __func__, tbl, tbl->slots);
4538 WARN_ON(1);
4539 goto out_free;
4540 }
4541 tbl->max_slots = max_slots; 4563 tbl->max_slots = max_slots;
4542 tbl->slots = slot; 4564 tbl->slots = slot;
4543 tbl->highest_used_slotid = -1; /* no slot is currently used */ 4565 tbl->highest_used_slotid = -1; /* no slot is currently used */
@@ -4547,10 +4569,6 @@ static int nfs4_init_slot_table(struct nfs4_slot_table *tbl,
4547out: 4569out:
4548 dprintk("<-- %s: return %d\n", __func__, ret); 4570 dprintk("<-- %s: return %d\n", __func__, ret);
4549 return ret; 4571 return ret;
4550
4551out_free:
4552 kfree(slot);
4553 goto out;
4554} 4572}
4555 4573
4556/* 4574/*
@@ -4558,17 +4576,24 @@ out_free:
4558 */ 4576 */
4559static int nfs4_init_slot_tables(struct nfs4_session *session) 4577static int nfs4_init_slot_tables(struct nfs4_session *session)
4560{ 4578{
4561 int status; 4579 struct nfs4_slot_table *tbl;
4580 int status = 0;
4562 4581
4563 status = nfs4_init_slot_table(&session->fc_slot_table, 4582 tbl = &session->fc_slot_table;
4564 session->fc_attrs.max_reqs, 1); 4583 if (tbl->slots == NULL) {
4565 if (status) 4584 status = nfs4_init_slot_table(tbl,
4566 return status; 4585 session->fc_attrs.max_reqs, 1);
4586 if (status)
4587 return status;
4588 }
4567 4589
4568 status = nfs4_init_slot_table(&session->bc_slot_table, 4590 tbl = &session->bc_slot_table;
4569 session->bc_attrs.max_reqs, 0); 4591 if (tbl->slots == NULL) {
4570 if (status) 4592 status = nfs4_init_slot_table(tbl,
4571 nfs4_destroy_slot_tables(session); 4593 session->bc_attrs.max_reqs, 0);
4594 if (status)
4595 nfs4_destroy_slot_tables(session);
4596 }
4572 4597
4573 return status; 4598 return status;
4574} 4599}
@@ -4582,7 +4607,6 @@ struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp)
4582 if (!session) 4607 if (!session)
4583 return NULL; 4608 return NULL;
4584 4609
4585 set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state);
4586 /* 4610 /*
4587 * The create session reply races with the server back 4611 * The create session reply races with the server back
4588 * channel probe. Mark the client NFS_CS_SESSION_INITING 4612 * channel probe. Mark the client NFS_CS_SESSION_INITING
@@ -4590,12 +4614,15 @@ struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp)
4590 * nfs_client struct 4614 * nfs_client struct
4591 */ 4615 */
4592 clp->cl_cons_state = NFS_CS_SESSION_INITING; 4616 clp->cl_cons_state = NFS_CS_SESSION_INITING;
4617 init_completion(&session->complete);
4593 4618
4594 tbl = &session->fc_slot_table; 4619 tbl = &session->fc_slot_table;
4620 tbl->highest_used_slotid = -1;
4595 spin_lock_init(&tbl->slot_tbl_lock); 4621 spin_lock_init(&tbl->slot_tbl_lock);
4596 rpc_init_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); 4622 rpc_init_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table");
4597 4623
4598 tbl = &session->bc_slot_table; 4624 tbl = &session->bc_slot_table;
4625 tbl->highest_used_slotid = -1;
4599 spin_lock_init(&tbl->slot_tbl_lock); 4626 spin_lock_init(&tbl->slot_tbl_lock);
4600 rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); 4627 rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table");
4601 4628
@@ -4747,11 +4774,10 @@ static int _nfs4_proc_create_session(struct nfs_client *clp)
4747 * It is the responsibility of the caller to verify the session is 4774 * It is the responsibility of the caller to verify the session is
4748 * expired before calling this routine. 4775 * expired before calling this routine.
4749 */ 4776 */
4750int nfs4_proc_create_session(struct nfs_client *clp, int reset) 4777int nfs4_proc_create_session(struct nfs_client *clp)
4751{ 4778{
4752 int status; 4779 int status;
4753 unsigned *ptr; 4780 unsigned *ptr;
4754 struct nfs_fsinfo fsinfo;
4755 struct nfs4_session *session = clp->cl_session; 4781 struct nfs4_session *session = clp->cl_session;
4756 4782
4757 dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); 4783 dprintk("--> %s clp=%p session=%p\n", __func__, clp, session);
@@ -4760,35 +4786,19 @@ int nfs4_proc_create_session(struct nfs_client *clp, int reset)
4760 if (status) 4786 if (status)
4761 goto out; 4787 goto out;
4762 4788
4763 /* Init or reset the fore channel */ 4789 /* Init and reset the fore channel */
4764 if (reset) 4790 status = nfs4_init_slot_tables(session);
4765 status = nfs4_reset_slot_tables(session); 4791 dprintk("slot table initialization returned %d\n", status);
4766 else 4792 if (status)
4767 status = nfs4_init_slot_tables(session); 4793 goto out;
4768 dprintk("fore channel slot table initialization returned %d\n", status); 4794 status = nfs4_reset_slot_tables(session);
4795 dprintk("slot table reset returned %d\n", status);
4769 if (status) 4796 if (status)
4770 goto out; 4797 goto out;
4771 4798
4772 ptr = (unsigned *)&session->sess_id.data[0]; 4799 ptr = (unsigned *)&session->sess_id.data[0];
4773 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, 4800 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__,
4774 clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); 4801 clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]);
4775
4776 if (reset)
4777 /* Lease time is aleady set */
4778 goto out;
4779
4780 /* Get the lease time */
4781 status = nfs4_proc_get_lease_time(clp, &fsinfo);
4782 if (status == 0) {
4783 /* Update lease time and schedule renewal */
4784 spin_lock(&clp->cl_lock);
4785 clp->cl_lease_time = fsinfo.lease_time * HZ;
4786 clp->cl_last_renewal = jiffies;
4787 clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
4788 spin_unlock(&clp->cl_lock);
4789
4790 nfs4_schedule_state_renewal(clp);
4791 }
4792out: 4802out:
4793 dprintk("<-- %s\n", __func__); 4803 dprintk("<-- %s\n", __func__);
4794 return status; 4804 return status;
@@ -4827,13 +4837,16 @@ int nfs4_proc_destroy_session(struct nfs4_session *session)
4827int nfs4_init_session(struct nfs_server *server) 4837int nfs4_init_session(struct nfs_server *server)
4828{ 4838{
4829 struct nfs_client *clp = server->nfs_client; 4839 struct nfs_client *clp = server->nfs_client;
4840 struct nfs4_session *session;
4830 int ret; 4841 int ret;
4831 4842
4832 if (!nfs4_has_session(clp)) 4843 if (!nfs4_has_session(clp))
4833 return 0; 4844 return 0;
4834 4845
4835 clp->cl_session->fc_attrs.max_rqst_sz = server->wsize; 4846 session = clp->cl_session;
4836 clp->cl_session->fc_attrs.max_resp_sz = server->rsize; 4847 session->fc_attrs.max_rqst_sz = server->wsize + nfs41_maxwrite_overhead;
4848 session->fc_attrs.max_resp_sz = server->rsize + nfs41_maxread_overhead;
4849
4837 ret = nfs4_recover_expired_lease(server); 4850 ret = nfs4_recover_expired_lease(server);
4838 if (!ret) 4851 if (!ret)
4839 ret = nfs4_check_client_ready(clp); 4852 ret = nfs4_check_client_ready(clp);
@@ -4872,11 +4885,10 @@ void nfs41_sequence_call_done(struct rpc_task *task, void *data)
4872 4885
4873 if (_nfs4_async_handle_error(task, NULL, clp, NULL) 4886 if (_nfs4_async_handle_error(task, NULL, clp, NULL)
4874 == -EAGAIN) { 4887 == -EAGAIN) {
4875 nfs4_restart_rpc(task, clp); 4888 nfs_restart_rpc(task, clp);
4876 return; 4889 return;
4877 } 4890 }
4878 } 4891 }
4879 nfs41_sequence_free_slot(clp, task->tk_msg.rpc_resp);
4880 dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); 4892 dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
4881 4893
4882 kfree(task->tk_msg.rpc_argp); 4894 kfree(task->tk_msg.rpc_argp);
@@ -4931,6 +4943,109 @@ static int nfs41_proc_async_sequence(struct nfs_client *clp,
4931 &nfs41_sequence_ops, (void *)clp); 4943 &nfs41_sequence_ops, (void *)clp);
4932} 4944}
4933 4945
4946struct nfs4_reclaim_complete_data {
4947 struct nfs_client *clp;
4948 struct nfs41_reclaim_complete_args arg;
4949 struct nfs41_reclaim_complete_res res;
4950};
4951
4952static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data)
4953{
4954 struct nfs4_reclaim_complete_data *calldata = data;
4955
4956 if (nfs4_setup_sequence(calldata->clp, &calldata->arg.seq_args,
4957 &calldata->res.seq_res, 0, task))
4958 return;
4959
4960 rpc_call_start(task);
4961}
4962
4963static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data)
4964{
4965 struct nfs4_reclaim_complete_data *calldata = data;
4966 struct nfs_client *clp = calldata->clp;
4967 struct nfs4_sequence_res *res = &calldata->res.seq_res;
4968
4969 dprintk("--> %s\n", __func__);
4970 nfs41_sequence_done(clp, res, task->tk_status);
4971 switch (task->tk_status) {
4972 case 0:
4973 case -NFS4ERR_COMPLETE_ALREADY:
4974 break;
4975 case -NFS4ERR_BADSESSION:
4976 case -NFS4ERR_DEADSESSION:
4977 /*
4978 * Handle the session error, but do not retry the operation, as
4979 * we have no way of telling whether the clientid had to be
4980 * reset before we got our reply. If reset, a new wave of
4981 * reclaim operations will follow, containing their own reclaim
4982 * complete. We don't want our retry to get on the way of
4983 * recovery by incorrectly indicating to the server that we're
4984 * done reclaiming state since the process had to be restarted.
4985 */
4986 _nfs4_async_handle_error(task, NULL, clp, NULL);
4987 break;
4988 default:
4989 if (_nfs4_async_handle_error(
4990 task, NULL, clp, NULL) == -EAGAIN) {
4991 rpc_restart_call_prepare(task);
4992 return;
4993 }
4994 }
4995
4996 dprintk("<-- %s\n", __func__);
4997}
4998
4999static void nfs4_free_reclaim_complete_data(void *data)
5000{
5001 struct nfs4_reclaim_complete_data *calldata = data;
5002
5003 kfree(calldata);
5004}
5005
5006static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = {
5007 .rpc_call_prepare = nfs4_reclaim_complete_prepare,
5008 .rpc_call_done = nfs4_reclaim_complete_done,
5009 .rpc_release = nfs4_free_reclaim_complete_data,
5010};
5011
5012/*
5013 * Issue a global reclaim complete.
5014 */
5015static int nfs41_proc_reclaim_complete(struct nfs_client *clp)
5016{
5017 struct nfs4_reclaim_complete_data *calldata;
5018 struct rpc_task *task;
5019 struct rpc_message msg = {
5020 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE],
5021 };
5022 struct rpc_task_setup task_setup_data = {
5023 .rpc_client = clp->cl_rpcclient,
5024 .rpc_message = &msg,
5025 .callback_ops = &nfs4_reclaim_complete_call_ops,
5026 .flags = RPC_TASK_ASYNC,
5027 };
5028 int status = -ENOMEM;
5029
5030 dprintk("--> %s\n", __func__);
5031 calldata = kzalloc(sizeof(*calldata), GFP_KERNEL);
5032 if (calldata == NULL)
5033 goto out;
5034 calldata->clp = clp;
5035 calldata->arg.one_fs = 0;
5036 calldata->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
5037
5038 msg.rpc_argp = &calldata->arg;
5039 msg.rpc_resp = &calldata->res;
5040 task_setup_data.callback_data = calldata;
5041 task = rpc_run_task(&task_setup_data);
5042 if (IS_ERR(task))
5043 status = PTR_ERR(task);
5044 rpc_put_task(task);
5045out:
5046 dprintk("<-- %s status=%d\n", __func__, status);
5047 return status;
5048}
4934#endif /* CONFIG_NFS_V4_1 */ 5049#endif /* CONFIG_NFS_V4_1 */
4935 5050
4936struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { 5051struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {
@@ -4948,8 +5063,9 @@ struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = {
4948 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, 5063 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
4949 .recover_open = nfs4_open_reclaim, 5064 .recover_open = nfs4_open_reclaim,
4950 .recover_lock = nfs4_lock_reclaim, 5065 .recover_lock = nfs4_lock_reclaim,
4951 .establish_clid = nfs4_proc_exchange_id, 5066 .establish_clid = nfs41_init_clientid,
4952 .get_clid_cred = nfs4_get_exchange_id_cred, 5067 .get_clid_cred = nfs4_get_exchange_id_cred,
5068 .reclaim_complete = nfs41_proc_reclaim_complete,
4953}; 5069};
4954#endif /* CONFIG_NFS_V4_1 */ 5070#endif /* CONFIG_NFS_V4_1 */
4955 5071
@@ -4968,7 +5084,7 @@ struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = {
4968 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, 5084 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
4969 .recover_open = nfs4_open_expired, 5085 .recover_open = nfs4_open_expired,
4970 .recover_lock = nfs4_lock_expired, 5086 .recover_lock = nfs4_lock_expired,
4971 .establish_clid = nfs4_proc_exchange_id, 5087 .establish_clid = nfs41_init_clientid,
4972 .get_clid_cred = nfs4_get_exchange_id_cred, 5088 .get_clid_cred = nfs4_get_exchange_id_cred,
4973}; 5089};
4974#endif /* CONFIG_NFS_V4_1 */ 5090#endif /* CONFIG_NFS_V4_1 */
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 2ef4fecf3984..e76427e6346f 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -116,6 +116,68 @@ struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp)
116 116
117#if defined(CONFIG_NFS_V4_1) 117#if defined(CONFIG_NFS_V4_1)
118 118
119static int nfs41_setup_state_renewal(struct nfs_client *clp)
120{
121 int status;
122 struct nfs_fsinfo fsinfo;
123
124 status = nfs4_proc_get_lease_time(clp, &fsinfo);
125 if (status == 0) {
126 /* Update lease time and schedule renewal */
127 spin_lock(&clp->cl_lock);
128 clp->cl_lease_time = fsinfo.lease_time * HZ;
129 clp->cl_last_renewal = jiffies;
130 spin_unlock(&clp->cl_lock);
131
132 nfs4_schedule_state_renewal(clp);
133 }
134
135 return status;
136}
137
138static void nfs41_end_drain_session(struct nfs_client *clp,
139 struct nfs4_session *ses)
140{
141 if (test_and_clear_bit(NFS4CLNT_SESSION_DRAINING, &clp->cl_state))
142 rpc_wake_up(&ses->fc_slot_table.slot_tbl_waitq);
143}
144
145static int nfs41_begin_drain_session(struct nfs_client *clp,
146 struct nfs4_session *ses)
147{
148 struct nfs4_slot_table *tbl = &ses->fc_slot_table;
149
150 spin_lock(&tbl->slot_tbl_lock);
151 set_bit(NFS4CLNT_SESSION_DRAINING, &clp->cl_state);
152 if (tbl->highest_used_slotid != -1) {
153 INIT_COMPLETION(ses->complete);
154 spin_unlock(&tbl->slot_tbl_lock);
155 return wait_for_completion_interruptible(&ses->complete);
156 }
157 spin_unlock(&tbl->slot_tbl_lock);
158 return 0;
159}
160
161int nfs41_init_clientid(struct nfs_client *clp, struct rpc_cred *cred)
162{
163 int status;
164
165 status = nfs41_begin_drain_session(clp, clp->cl_session);
166 if (status != 0)
167 goto out;
168 status = nfs4_proc_exchange_id(clp, cred);
169 if (status != 0)
170 goto out;
171 status = nfs4_proc_create_session(clp);
172 if (status != 0)
173 goto out;
174 nfs41_end_drain_session(clp, clp->cl_session);
175 nfs41_setup_state_renewal(clp);
176 nfs_mark_client_ready(clp, NFS_CS_READY);
177out:
178 return status;
179}
180
119struct rpc_cred *nfs4_get_exchange_id_cred(struct nfs_client *clp) 181struct rpc_cred *nfs4_get_exchange_id_cred(struct nfs_client *clp)
120{ 182{
121 struct rpc_cred *cred; 183 struct rpc_cred *cred;
@@ -877,6 +939,10 @@ static int nfs4_reclaim_locks(struct nfs4_state *state, const struct nfs4_state_
877 case -NFS4ERR_EXPIRED: 939 case -NFS4ERR_EXPIRED:
878 case -NFS4ERR_NO_GRACE: 940 case -NFS4ERR_NO_GRACE:
879 case -NFS4ERR_STALE_CLIENTID: 941 case -NFS4ERR_STALE_CLIENTID:
942 case -NFS4ERR_BADSESSION:
943 case -NFS4ERR_BADSLOT:
944 case -NFS4ERR_BAD_HIGH_SLOT:
945 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
880 goto out; 946 goto out;
881 default: 947 default:
882 printk(KERN_ERR "%s: unhandled error %d. Zeroing state\n", 948 printk(KERN_ERR "%s: unhandled error %d. Zeroing state\n",
@@ -959,6 +1025,10 @@ restart:
959 case -NFS4ERR_NO_GRACE: 1025 case -NFS4ERR_NO_GRACE:
960 nfs4_state_mark_reclaim_nograce(sp->so_client, state); 1026 nfs4_state_mark_reclaim_nograce(sp->so_client, state);
961 case -NFS4ERR_STALE_CLIENTID: 1027 case -NFS4ERR_STALE_CLIENTID:
1028 case -NFS4ERR_BADSESSION:
1029 case -NFS4ERR_BADSLOT:
1030 case -NFS4ERR_BAD_HIGH_SLOT:
1031 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
962 goto out_err; 1032 goto out_err;
963 } 1033 }
964 nfs4_put_open_state(state); 1034 nfs4_put_open_state(state);
@@ -1011,6 +1081,14 @@ static void nfs4_state_start_reclaim_reboot(struct nfs_client *clp)
1011 nfs4_state_mark_reclaim_helper(clp, nfs4_state_mark_reclaim_reboot); 1081 nfs4_state_mark_reclaim_helper(clp, nfs4_state_mark_reclaim_reboot);
1012} 1082}
1013 1083
1084static void nfs4_reclaim_complete(struct nfs_client *clp,
1085 const struct nfs4_state_recovery_ops *ops)
1086{
1087 /* Notify the server we're done reclaiming our state */
1088 if (ops->reclaim_complete)
1089 (void)ops->reclaim_complete(clp);
1090}
1091
1014static void nfs4_state_end_reclaim_reboot(struct nfs_client *clp) 1092static void nfs4_state_end_reclaim_reboot(struct nfs_client *clp)
1015{ 1093{
1016 struct nfs4_state_owner *sp; 1094 struct nfs4_state_owner *sp;
@@ -1020,6 +1098,9 @@ static void nfs4_state_end_reclaim_reboot(struct nfs_client *clp)
1020 if (!test_and_clear_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state)) 1098 if (!test_and_clear_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state))
1021 return; 1099 return;
1022 1100
1101 nfs4_reclaim_complete(clp,
1102 nfs4_reboot_recovery_ops[clp->cl_minorversion]);
1103
1023 for (pos = rb_first(&clp->cl_state_owners); pos != NULL; pos = rb_next(pos)) { 1104 for (pos = rb_first(&clp->cl_state_owners); pos != NULL; pos = rb_next(pos)) {
1024 sp = rb_entry(pos, struct nfs4_state_owner, so_client_node); 1105 sp = rb_entry(pos, struct nfs4_state_owner, so_client_node);
1025 spin_lock(&sp->so_lock); 1106 spin_lock(&sp->so_lock);
@@ -1046,25 +1127,25 @@ static void nfs4_state_start_reclaim_nograce(struct nfs_client *clp)
1046 nfs4_state_mark_reclaim_helper(clp, nfs4_state_mark_reclaim_nograce); 1127 nfs4_state_mark_reclaim_helper(clp, nfs4_state_mark_reclaim_nograce);
1047} 1128}
1048 1129
1049static void nfs4_state_end_reclaim_nograce(struct nfs_client *clp) 1130static int nfs4_recovery_handle_error(struct nfs_client *clp, int error)
1050{
1051 clear_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state);
1052}
1053
1054static void nfs4_recovery_handle_error(struct nfs_client *clp, int error)
1055{ 1131{
1056 switch (error) { 1132 switch (error) {
1057 case -NFS4ERR_CB_PATH_DOWN: 1133 case -NFS4ERR_CB_PATH_DOWN:
1058 nfs_handle_cb_pathdown(clp); 1134 nfs_handle_cb_pathdown(clp);
1059 break; 1135 return 0;
1136 case -NFS4ERR_NO_GRACE:
1137 nfs4_state_end_reclaim_reboot(clp);
1138 return 0;
1060 case -NFS4ERR_STALE_CLIENTID: 1139 case -NFS4ERR_STALE_CLIENTID:
1061 case -NFS4ERR_LEASE_MOVED: 1140 case -NFS4ERR_LEASE_MOVED:
1062 set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); 1141 set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
1142 nfs4_state_end_reclaim_reboot(clp);
1063 nfs4_state_start_reclaim_reboot(clp); 1143 nfs4_state_start_reclaim_reboot(clp);
1064 break; 1144 break;
1065 case -NFS4ERR_EXPIRED: 1145 case -NFS4ERR_EXPIRED:
1066 set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); 1146 set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
1067 nfs4_state_start_reclaim_nograce(clp); 1147 nfs4_state_start_reclaim_nograce(clp);
1148 break;
1068 case -NFS4ERR_BADSESSION: 1149 case -NFS4ERR_BADSESSION:
1069 case -NFS4ERR_BADSLOT: 1150 case -NFS4ERR_BADSLOT:
1070 case -NFS4ERR_BAD_HIGH_SLOT: 1151 case -NFS4ERR_BAD_HIGH_SLOT:
@@ -1072,8 +1153,11 @@ static void nfs4_recovery_handle_error(struct nfs_client *clp, int error)
1072 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: 1153 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
1073 case -NFS4ERR_SEQ_FALSE_RETRY: 1154 case -NFS4ERR_SEQ_FALSE_RETRY:
1074 case -NFS4ERR_SEQ_MISORDERED: 1155 case -NFS4ERR_SEQ_MISORDERED:
1075 set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state); 1156 set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state);
1157 /* Zero session reset errors */
1158 return 0;
1076 } 1159 }
1160 return error;
1077} 1161}
1078 1162
1079static int nfs4_do_reclaim(struct nfs_client *clp, const struct nfs4_state_recovery_ops *ops) 1163static int nfs4_do_reclaim(struct nfs_client *clp, const struct nfs4_state_recovery_ops *ops)
@@ -1093,8 +1177,7 @@ restart:
1093 if (status < 0) { 1177 if (status < 0) {
1094 set_bit(ops->owner_flag_bit, &sp->so_flags); 1178 set_bit(ops->owner_flag_bit, &sp->so_flags);
1095 nfs4_put_state_owner(sp); 1179 nfs4_put_state_owner(sp);
1096 nfs4_recovery_handle_error(clp, status); 1180 return nfs4_recovery_handle_error(clp, status);
1097 return status;
1098 } 1181 }
1099 nfs4_put_state_owner(sp); 1182 nfs4_put_state_owner(sp);
1100 goto restart; 1183 goto restart;
@@ -1124,8 +1207,7 @@ static int nfs4_check_lease(struct nfs_client *clp)
1124 status = ops->renew_lease(clp, cred); 1207 status = ops->renew_lease(clp, cred);
1125 put_rpccred(cred); 1208 put_rpccred(cred);
1126out: 1209out:
1127 nfs4_recovery_handle_error(clp, status); 1210 return nfs4_recovery_handle_error(clp, status);
1128 return status;
1129} 1211}
1130 1212
1131static int nfs4_reclaim_lease(struct nfs_client *clp) 1213static int nfs4_reclaim_lease(struct nfs_client *clp)
@@ -1151,55 +1233,65 @@ static int nfs4_reclaim_lease(struct nfs_client *clp)
1151} 1233}
1152 1234
1153#ifdef CONFIG_NFS_V4_1 1235#ifdef CONFIG_NFS_V4_1
1154static void nfs4_session_recovery_handle_error(struct nfs_client *clp, int err) 1236void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags)
1155{ 1237{
1156 switch (err) { 1238 if (!flags)
1157 case -NFS4ERR_STALE_CLIENTID: 1239 return;
1240 else if (flags & SEQ4_STATUS_RESTART_RECLAIM_NEEDED) {
1158 set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); 1241 set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
1159 set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state); 1242 nfs4_state_start_reclaim_reboot(clp);
1160 } 1243 nfs4_schedule_state_recovery(clp);
1244 } else if (flags & (SEQ4_STATUS_EXPIRED_ALL_STATE_REVOKED |
1245 SEQ4_STATUS_EXPIRED_SOME_STATE_REVOKED |
1246 SEQ4_STATUS_ADMIN_STATE_REVOKED |
1247 SEQ4_STATUS_RECALLABLE_STATE_REVOKED |
1248 SEQ4_STATUS_LEASE_MOVED)) {
1249 set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
1250 nfs4_state_start_reclaim_nograce(clp);
1251 nfs4_schedule_state_recovery(clp);
1252 } else if (flags & (SEQ4_STATUS_CB_PATH_DOWN |
1253 SEQ4_STATUS_BACKCHANNEL_FAULT |
1254 SEQ4_STATUS_CB_PATH_DOWN_SESSION))
1255 nfs_expire_all_delegations(clp);
1161} 1256}
1162 1257
1163static int nfs4_reset_session(struct nfs_client *clp) 1258static int nfs4_reset_session(struct nfs_client *clp)
1164{ 1259{
1260 struct nfs4_session *ses = clp->cl_session;
1165 int status; 1261 int status;
1166 1262
1263 status = nfs41_begin_drain_session(clp, ses);
1264 if (status != 0)
1265 return status;
1266
1167 status = nfs4_proc_destroy_session(clp->cl_session); 1267 status = nfs4_proc_destroy_session(clp->cl_session);
1168 if (status && status != -NFS4ERR_BADSESSION && 1268 if (status && status != -NFS4ERR_BADSESSION &&
1169 status != -NFS4ERR_DEADSESSION) { 1269 status != -NFS4ERR_DEADSESSION) {
1170 nfs4_session_recovery_handle_error(clp, status); 1270 status = nfs4_recovery_handle_error(clp, status);
1171 goto out; 1271 goto out;
1172 } 1272 }
1173 1273
1174 memset(clp->cl_session->sess_id.data, 0, NFS4_MAX_SESSIONID_LEN); 1274 memset(clp->cl_session->sess_id.data, 0, NFS4_MAX_SESSIONID_LEN);
1175 status = nfs4_proc_create_session(clp, 1); 1275 status = nfs4_proc_create_session(clp);
1176 if (status) 1276 if (status)
1177 nfs4_session_recovery_handle_error(clp, status); 1277 status = nfs4_recovery_handle_error(clp, status);
1178 /* fall through*/
1179out:
1180 /* Wake up the next rpc task even on error */
1181 rpc_wake_up_next(&clp->cl_session->fc_slot_table.slot_tbl_waitq);
1182 return status;
1183}
1184
1185static int nfs4_initialize_session(struct nfs_client *clp)
1186{
1187 int status;
1188 1278
1189 status = nfs4_proc_create_session(clp, 0); 1279out:
1190 if (!status) { 1280 /*
1191 nfs_mark_client_ready(clp, NFS_CS_READY); 1281 * Let the state manager reestablish state
1192 } else if (status == -NFS4ERR_STALE_CLIENTID) { 1282 * without waking other tasks yet.
1193 set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); 1283 */
1194 set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state); 1284 if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) {
1195 } else { 1285 /* Wake up the next rpc task */
1196 nfs_mark_client_ready(clp, status); 1286 nfs41_end_drain_session(clp, ses);
1287 if (status == 0)
1288 nfs41_setup_state_renewal(clp);
1197 } 1289 }
1198 return status; 1290 return status;
1199} 1291}
1292
1200#else /* CONFIG_NFS_V4_1 */ 1293#else /* CONFIG_NFS_V4_1 */
1201static int nfs4_reset_session(struct nfs_client *clp) { return 0; } 1294static int nfs4_reset_session(struct nfs_client *clp) { return 0; }
1202static int nfs4_initialize_session(struct nfs_client *clp) { return 0; }
1203#endif /* CONFIG_NFS_V4_1 */ 1295#endif /* CONFIG_NFS_V4_1 */
1204 1296
1205/* Set NFS4CLNT_LEASE_EXPIRED for all v4.0 errors and for recoverable errors 1297/* Set NFS4CLNT_LEASE_EXPIRED for all v4.0 errors and for recoverable errors
@@ -1234,7 +1326,8 @@ static void nfs4_state_manager(struct nfs_client *clp)
1234 status = nfs4_reclaim_lease(clp); 1326 status = nfs4_reclaim_lease(clp);
1235 if (status) { 1327 if (status) {
1236 nfs4_set_lease_expired(clp, status); 1328 nfs4_set_lease_expired(clp, status);
1237 if (status == -EAGAIN) 1329 if (test_bit(NFS4CLNT_LEASE_EXPIRED,
1330 &clp->cl_state))
1238 continue; 1331 continue;
1239 if (clp->cl_cons_state == 1332 if (clp->cl_cons_state ==
1240 NFS_CS_SESSION_INITING) 1333 NFS_CS_SESSION_INITING)
@@ -1242,55 +1335,51 @@ static void nfs4_state_manager(struct nfs_client *clp)
1242 goto out_error; 1335 goto out_error;
1243 } 1336 }
1244 clear_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state); 1337 clear_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state);
1338 set_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state);
1245 } 1339 }
1246 1340
1247 if (test_and_clear_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state)) { 1341 if (test_and_clear_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state)) {
1248 status = nfs4_check_lease(clp); 1342 status = nfs4_check_lease(clp);
1249 if (status != 0) 1343 if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state))
1250 continue; 1344 continue;
1345 if (status < 0 && status != -NFS4ERR_CB_PATH_DOWN)
1346 goto out_error;
1251 } 1347 }
1348
1252 /* Initialize or reset the session */ 1349 /* Initialize or reset the session */
1253 if (test_and_clear_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state) 1350 if (test_and_clear_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state)
1254 && nfs4_has_session(clp)) { 1351 && nfs4_has_session(clp)) {
1255 if (clp->cl_cons_state == NFS_CS_SESSION_INITING) 1352 status = nfs4_reset_session(clp);
1256 status = nfs4_initialize_session(clp); 1353 if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state))
1257 else 1354 continue;
1258 status = nfs4_reset_session(clp); 1355 if (status < 0)
1259 if (status) {
1260 if (status == -NFS4ERR_STALE_CLIENTID)
1261 continue;
1262 goto out_error; 1356 goto out_error;
1263 }
1264 } 1357 }
1358
1265 /* First recover reboot state... */ 1359 /* First recover reboot state... */
1266 if (test_and_clear_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state)) { 1360 if (test_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state)) {
1267 status = nfs4_do_reclaim(clp, 1361 status = nfs4_do_reclaim(clp,
1268 nfs4_reboot_recovery_ops[clp->cl_minorversion]); 1362 nfs4_reboot_recovery_ops[clp->cl_minorversion]);
1269 if (status == -NFS4ERR_STALE_CLIENTID) 1363 if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) ||
1270 continue; 1364 test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state))
1271 if (test_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state))
1272 continue; 1365 continue;
1273 nfs4_state_end_reclaim_reboot(clp); 1366 nfs4_state_end_reclaim_reboot(clp);
1274 continue; 1367 if (test_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state))
1368 continue;
1369 if (status < 0)
1370 goto out_error;
1275 } 1371 }
1276 1372
1277 /* Now recover expired state... */ 1373 /* Now recover expired state... */
1278 if (test_and_clear_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state)) { 1374 if (test_and_clear_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state)) {
1279 status = nfs4_do_reclaim(clp, 1375 status = nfs4_do_reclaim(clp,
1280 nfs4_nograce_recovery_ops[clp->cl_minorversion]); 1376 nfs4_nograce_recovery_ops[clp->cl_minorversion]);
1281 if (status < 0) { 1377 if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) ||
1282 set_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state); 1378 test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state) ||
1283 if (status == -NFS4ERR_STALE_CLIENTID) 1379 test_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state))
1284 continue; 1380 continue;
1285 if (status == -NFS4ERR_EXPIRED) 1381 if (status < 0)
1286 continue;
1287 if (test_bit(NFS4CLNT_SESSION_SETUP,
1288 &clp->cl_state))
1289 continue;
1290 goto out_error; 1382 goto out_error;
1291 } else
1292 nfs4_state_end_reclaim_nograce(clp);
1293 continue;
1294 } 1383 }
1295 1384
1296 if (test_and_clear_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state)) { 1385 if (test_and_clear_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state)) {
@@ -1309,8 +1398,6 @@ static void nfs4_state_manager(struct nfs_client *clp)
1309out_error: 1398out_error:
1310 printk(KERN_WARNING "Error: state manager failed on NFSv4 server %s" 1399 printk(KERN_WARNING "Error: state manager failed on NFSv4 server %s"
1311 " with error %d\n", clp->cl_hostname, -status); 1400 " with error %d\n", clp->cl_hostname, -status);
1312 if (test_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state))
1313 nfs4_state_end_reclaim_reboot(clp);
1314 nfs4_clear_state_manager_bit(clp); 1401 nfs4_clear_state_manager_bit(clp);
1315} 1402}
1316 1403
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 20b4e30e6c82..e437fd6a819f 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -46,11 +46,13 @@
46#include <linux/proc_fs.h> 46#include <linux/proc_fs.h>
47#include <linux/kdev_t.h> 47#include <linux/kdev_t.h>
48#include <linux/sunrpc/clnt.h> 48#include <linux/sunrpc/clnt.h>
49#include <linux/sunrpc/msg_prot.h>
49#include <linux/nfs.h> 50#include <linux/nfs.h>
50#include <linux/nfs4.h> 51#include <linux/nfs4.h>
51#include <linux/nfs_fs.h> 52#include <linux/nfs_fs.h>
52#include <linux/nfs_idmap.h> 53#include <linux/nfs_idmap.h>
53#include "nfs4_fs.h" 54#include "nfs4_fs.h"
55#include "internal.h"
54 56
55#define NFSDBG_FACILITY NFSDBG_XDR 57#define NFSDBG_FACILITY NFSDBG_XDR
56 58
@@ -134,7 +136,7 @@ static int nfs4_stat_to_errno(int);
134#define decode_lookup_maxsz (op_decode_hdr_maxsz) 136#define decode_lookup_maxsz (op_decode_hdr_maxsz)
135#define encode_share_access_maxsz \ 137#define encode_share_access_maxsz \
136 (2) 138 (2)
137#define encode_createmode_maxsz (1 + encode_attrs_maxsz) 139#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
138#define encode_opentype_maxsz (1 + encode_createmode_maxsz) 140#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
139#define encode_claim_null_maxsz (1 + nfs4_name_maxsz) 141#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
140#define encode_open_maxsz (op_encode_hdr_maxsz + \ 142#define encode_open_maxsz (op_encode_hdr_maxsz + \
@@ -299,6 +301,8 @@ static int nfs4_stat_to_errno(int);
299 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4) 301 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
300#define decode_sequence_maxsz (op_decode_hdr_maxsz + \ 302#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
301 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) 303 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
304#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
305#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
302#else /* CONFIG_NFS_V4_1 */ 306#else /* CONFIG_NFS_V4_1 */
303#define encode_sequence_maxsz 0 307#define encode_sequence_maxsz 0
304#define decode_sequence_maxsz 0 308#define decode_sequence_maxsz 0
@@ -676,6 +680,25 @@ static int nfs4_stat_to_errno(int);
676 decode_sequence_maxsz + \ 680 decode_sequence_maxsz + \
677 decode_putrootfh_maxsz + \ 681 decode_putrootfh_maxsz + \
678 decode_fsinfo_maxsz) 682 decode_fsinfo_maxsz)
683#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
684 encode_sequence_maxsz + \
685 encode_reclaim_complete_maxsz)
686#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
687 decode_sequence_maxsz + \
688 decode_reclaim_complete_maxsz)
689
690const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
691 compound_encode_hdr_maxsz +
692 encode_sequence_maxsz +
693 encode_putfh_maxsz +
694 encode_getattr_maxsz) *
695 XDR_UNIT);
696
697const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
698 compound_decode_hdr_maxsz +
699 decode_sequence_maxsz +
700 decode_putfh_maxsz) *
701 XDR_UNIT);
679#endif /* CONFIG_NFS_V4_1 */ 702#endif /* CONFIG_NFS_V4_1 */
680 703
681static const umode_t nfs_type2fmt[] = { 704static const umode_t nfs_type2fmt[] = {
@@ -1140,6 +1163,7 @@ static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_opena
1140static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1163static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1141{ 1164{
1142 __be32 *p; 1165 __be32 *p;
1166 struct nfs_client *clp;
1143 1167
1144 p = reserve_space(xdr, 4); 1168 p = reserve_space(xdr, 4);
1145 switch(arg->open_flags & O_EXCL) { 1169 switch(arg->open_flags & O_EXCL) {
@@ -1148,8 +1172,23 @@ static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_op
1148 encode_attrs(xdr, arg->u.attrs, arg->server); 1172 encode_attrs(xdr, arg->u.attrs, arg->server);
1149 break; 1173 break;
1150 default: 1174 default:
1151 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE); 1175 clp = arg->server->nfs_client;
1152 encode_nfs4_verifier(xdr, &arg->u.verifier); 1176 if (clp->cl_minorversion > 0) {
1177 if (nfs4_has_persistent_session(clp)) {
1178 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1179 encode_attrs(xdr, arg->u.attrs, arg->server);
1180 } else {
1181 struct iattr dummy;
1182
1183 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1184 encode_nfs4_verifier(xdr, &arg->u.verifier);
1185 dummy.ia_valid = 0;
1186 encode_attrs(xdr, &dummy, arg->server);
1187 }
1188 } else {
1189 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1190 encode_nfs4_verifier(xdr, &arg->u.verifier);
1191 }
1153 } 1192 }
1154} 1193}
1155 1194
@@ -1592,6 +1631,19 @@ static void encode_destroy_session(struct xdr_stream *xdr,
1592 hdr->nops++; 1631 hdr->nops++;
1593 hdr->replen += decode_destroy_session_maxsz; 1632 hdr->replen += decode_destroy_session_maxsz;
1594} 1633}
1634
1635static void encode_reclaim_complete(struct xdr_stream *xdr,
1636 struct nfs41_reclaim_complete_args *args,
1637 struct compound_hdr *hdr)
1638{
1639 __be32 *p;
1640
1641 p = reserve_space(xdr, 8);
1642 *p++ = cpu_to_be32(OP_RECLAIM_COMPLETE);
1643 *p++ = cpu_to_be32(args->one_fs);
1644 hdr->nops++;
1645 hdr->replen += decode_reclaim_complete_maxsz;
1646}
1595#endif /* CONFIG_NFS_V4_1 */ 1647#endif /* CONFIG_NFS_V4_1 */
1596 1648
1597static void encode_sequence(struct xdr_stream *xdr, 1649static void encode_sequence(struct xdr_stream *xdr,
@@ -2096,7 +2148,7 @@ nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
2096 encode_compound_hdr(&xdr, req, &hdr); 2148 encode_compound_hdr(&xdr, req, &hdr);
2097 encode_sequence(&xdr, &args->seq_args, &hdr); 2149 encode_sequence(&xdr, &args->seq_args, &hdr);
2098 encode_putfh(&xdr, args->fh, &hdr); 2150 encode_putfh(&xdr, args->fh, &hdr);
2099 replen = hdr.replen + nfs4_fattr_bitmap_maxsz + 1; 2151 replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1;
2100 encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr); 2152 encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr);
2101 2153
2102 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, 2154 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
@@ -2420,6 +2472,26 @@ static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p,
2420 encode_nops(&hdr); 2472 encode_nops(&hdr);
2421 return 0; 2473 return 0;
2422} 2474}
2475
2476/*
2477 * a RECLAIM_COMPLETE request
2478 */
2479static int nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, uint32_t *p,
2480 struct nfs41_reclaim_complete_args *args)
2481{
2482 struct xdr_stream xdr;
2483 struct compound_hdr hdr = {
2484 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2485 };
2486
2487 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2488 encode_compound_hdr(&xdr, req, &hdr);
2489 encode_sequence(&xdr, &args->seq_args, &hdr);
2490 encode_reclaim_complete(&xdr, args, &hdr);
2491 encode_nops(&hdr);
2492 return 0;
2493}
2494
2423#endif /* CONFIG_NFS_V4_1 */ 2495#endif /* CONFIG_NFS_V4_1 */
2424 2496
2425static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) 2497static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
@@ -4528,6 +4600,11 @@ static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
4528{ 4600{
4529 return decode_op_hdr(xdr, OP_DESTROY_SESSION); 4601 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
4530} 4602}
4603
4604static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
4605{
4606 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
4607}
4531#endif /* CONFIG_NFS_V4_1 */ 4608#endif /* CONFIG_NFS_V4_1 */
4532 4609
4533static int decode_sequence(struct xdr_stream *xdr, 4610static int decode_sequence(struct xdr_stream *xdr,
@@ -4583,8 +4660,8 @@ static int decode_sequence(struct xdr_stream *xdr,
4583 dummy = be32_to_cpup(p++); 4660 dummy = be32_to_cpup(p++);
4584 /* target highest slot id - currently not processed */ 4661 /* target highest slot id - currently not processed */
4585 dummy = be32_to_cpup(p++); 4662 dummy = be32_to_cpup(p++);
4586 /* result flags - currently not processed */ 4663 /* result flags */
4587 dummy = be32_to_cpup(p); 4664 res->sr_status_flags = be32_to_cpup(p);
4588 status = 0; 4665 status = 0;
4589out_err: 4666out_err:
4590 res->sr_status = status; 4667 res->sr_status = status;
@@ -5309,7 +5386,7 @@ out:
5309} 5386}
5310 5387
5311/* 5388/*
5312 * FSINFO request 5389 * Decode FSINFO response
5313 */ 5390 */
5314static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p, 5391static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p,
5315 struct nfs4_fsinfo_res *res) 5392 struct nfs4_fsinfo_res *res)
@@ -5330,7 +5407,7 @@ static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p,
5330} 5407}
5331 5408
5332/* 5409/*
5333 * PATHCONF request 5410 * Decode PATHCONF response
5334 */ 5411 */
5335static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p, 5412static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p,
5336 struct nfs4_pathconf_res *res) 5413 struct nfs4_pathconf_res *res)
@@ -5351,7 +5428,7 @@ static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p,
5351} 5428}
5352 5429
5353/* 5430/*
5354 * STATFS request 5431 * Decode STATFS response
5355 */ 5432 */
5356static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p, 5433static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p,
5357 struct nfs4_statfs_res *res) 5434 struct nfs4_statfs_res *res)
@@ -5372,7 +5449,7 @@ static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p,
5372} 5449}
5373 5450
5374/* 5451/*
5375 * GETATTR_BITMAP request 5452 * Decode GETATTR_BITMAP response
5376 */ 5453 */
5377static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res) 5454static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
5378{ 5455{
@@ -5411,7 +5488,7 @@ static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
5411} 5488}
5412 5489
5413/* 5490/*
5414 * a SETCLIENTID request 5491 * Decode SETCLIENTID response
5415 */ 5492 */
5416static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p, 5493static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
5417 struct nfs_client *clp) 5494 struct nfs_client *clp)
@@ -5428,7 +5505,7 @@ static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
5428} 5505}
5429 5506
5430/* 5507/*
5431 * a SETCLIENTID_CONFIRM request 5508 * Decode SETCLIENTID_CONFIRM response
5432 */ 5509 */
5433static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo) 5510static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
5434{ 5511{
@@ -5448,7 +5525,7 @@ static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, str
5448} 5525}
5449 5526
5450/* 5527/*
5451 * DELEGRETURN request 5528 * Decode DELEGRETURN response
5452 */ 5529 */
5453static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res) 5530static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
5454{ 5531{
@@ -5474,7 +5551,7 @@ out:
5474} 5551}
5475 5552
5476/* 5553/*
5477 * FS_LOCATIONS request 5554 * Decode FS_LOCATIONS response
5478 */ 5555 */
5479static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p, 5556static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p,
5480 struct nfs4_fs_locations_res *res) 5557 struct nfs4_fs_locations_res *res)
@@ -5504,7 +5581,7 @@ out:
5504 5581
5505#if defined(CONFIG_NFS_V4_1) 5582#if defined(CONFIG_NFS_V4_1)
5506/* 5583/*
5507 * EXCHANGE_ID request 5584 * Decode EXCHANGE_ID response
5508 */ 5585 */
5509static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p, 5586static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p,
5510 void *res) 5587 void *res)
@@ -5521,7 +5598,7 @@ static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p,
5521} 5598}
5522 5599
5523/* 5600/*
5524 * a CREATE_SESSION request 5601 * Decode CREATE_SESSION response
5525 */ 5602 */
5526static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p, 5603static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p,
5527 struct nfs41_create_session_res *res) 5604 struct nfs41_create_session_res *res)
@@ -5538,7 +5615,7 @@ static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p,
5538} 5615}
5539 5616
5540/* 5617/*
5541 * a DESTROY_SESSION request 5618 * Decode DESTROY_SESSION response
5542 */ 5619 */
5543static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p, 5620static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p,
5544 void *dummy) 5621 void *dummy)
@@ -5555,7 +5632,7 @@ static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p,
5555} 5632}
5556 5633
5557/* 5634/*
5558 * a SEQUENCE request 5635 * Decode SEQUENCE response
5559 */ 5636 */
5560static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p, 5637static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p,
5561 struct nfs4_sequence_res *res) 5638 struct nfs4_sequence_res *res)
@@ -5572,7 +5649,7 @@ static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p,
5572} 5649}
5573 5650
5574/* 5651/*
5575 * a GET_LEASE_TIME request 5652 * Decode GET_LEASE_TIME response
5576 */ 5653 */
5577static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p, 5654static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p,
5578 struct nfs4_get_lease_time_res *res) 5655 struct nfs4_get_lease_time_res *res)
@@ -5591,6 +5668,25 @@ static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p,
5591 status = decode_fsinfo(&xdr, res->lr_fsinfo); 5668 status = decode_fsinfo(&xdr, res->lr_fsinfo);
5592 return status; 5669 return status;
5593} 5670}
5671
5672/*
5673 * Decode RECLAIM_COMPLETE response
5674 */
5675static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, uint32_t *p,
5676 struct nfs41_reclaim_complete_res *res)
5677{
5678 struct xdr_stream xdr;
5679 struct compound_hdr hdr;
5680 int status;
5681
5682 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5683 status = decode_compound_hdr(&xdr, &hdr);
5684 if (!status)
5685 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5686 if (!status)
5687 status = decode_reclaim_complete(&xdr, (void *)NULL);
5688 return status;
5689}
5594#endif /* CONFIG_NFS_V4_1 */ 5690#endif /* CONFIG_NFS_V4_1 */
5595 5691
5596__be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus) 5692__be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus)
@@ -5767,6 +5863,7 @@ struct rpc_procinfo nfs4_procedures[] = {
5767 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), 5863 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
5768 PROC(SEQUENCE, enc_sequence, dec_sequence), 5864 PROC(SEQUENCE, enc_sequence, dec_sequence),
5769 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), 5865 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
5866 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
5770#endif /* CONFIG_NFS_V4_1 */ 5867#endif /* CONFIG_NFS_V4_1 */
5771}; 5868};
5772 5869
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 12c9e66d3f1d..db9b360ae19d 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -356,25 +356,19 @@ static void nfs_readpage_retry(struct rpc_task *task, struct nfs_read_data *data
356 struct nfs_readres *resp = &data->res; 356 struct nfs_readres *resp = &data->res;
357 357
358 if (resp->eof || resp->count == argp->count) 358 if (resp->eof || resp->count == argp->count)
359 goto out; 359 return;
360 360
361 /* This is a short read! */ 361 /* This is a short read! */
362 nfs_inc_stats(data->inode, NFSIOS_SHORTREAD); 362 nfs_inc_stats(data->inode, NFSIOS_SHORTREAD);
363 /* Has the server at least made some progress? */ 363 /* Has the server at least made some progress? */
364 if (resp->count == 0) 364 if (resp->count == 0)
365 goto out; 365 return;
366 366
367 /* Yes, so retry the read at the end of the data */ 367 /* Yes, so retry the read at the end of the data */
368 argp->offset += resp->count; 368 argp->offset += resp->count;
369 argp->pgbase += resp->count; 369 argp->pgbase += resp->count;
370 argp->count -= resp->count; 370 argp->count -= resp->count;
371 nfs4_restart_rpc(task, NFS_SERVER(data->inode)->nfs_client); 371 nfs_restart_rpc(task, NFS_SERVER(data->inode)->nfs_client);
372 return;
373out:
374 nfs4_sequence_free_slot(NFS_SERVER(data->inode)->nfs_client,
375 &data->res.seq_res);
376 return;
377
378} 372}
379 373
380/* 374/*
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 90be551b80c1..ce907efc5508 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -175,14 +175,16 @@ static const match_table_t nfs_mount_option_tokens = {
175}; 175};
176 176
177enum { 177enum {
178 Opt_xprt_udp, Opt_xprt_tcp, Opt_xprt_rdma, 178 Opt_xprt_udp, Opt_xprt_udp6, Opt_xprt_tcp, Opt_xprt_tcp6, Opt_xprt_rdma,
179 179
180 Opt_xprt_err 180 Opt_xprt_err
181}; 181};
182 182
183static const match_table_t nfs_xprt_protocol_tokens = { 183static const match_table_t nfs_xprt_protocol_tokens = {
184 { Opt_xprt_udp, "udp" }, 184 { Opt_xprt_udp, "udp" },
185 { Opt_xprt_udp6, "udp6" },
185 { Opt_xprt_tcp, "tcp" }, 186 { Opt_xprt_tcp, "tcp" },
187 { Opt_xprt_tcp6, "tcp6" },
186 { Opt_xprt_rdma, "rdma" }, 188 { Opt_xprt_rdma, "rdma" },
187 189
188 { Opt_xprt_err, NULL } 190 { Opt_xprt_err, NULL }
@@ -492,6 +494,45 @@ static const char *nfs_pseudoflavour_to_name(rpc_authflavor_t flavour)
492 return sec_flavours[i].str; 494 return sec_flavours[i].str;
493} 495}
494 496
497static void nfs_show_mountd_netid(struct seq_file *m, struct nfs_server *nfss,
498 int showdefaults)
499{
500 struct sockaddr *sap = (struct sockaddr *) &nfss->mountd_address;
501
502 seq_printf(m, ",mountproto=");
503 switch (sap->sa_family) {
504 case AF_INET:
505 switch (nfss->mountd_protocol) {
506 case IPPROTO_UDP:
507 seq_printf(m, RPCBIND_NETID_UDP);
508 break;
509 case IPPROTO_TCP:
510 seq_printf(m, RPCBIND_NETID_TCP);
511 break;
512 default:
513 if (showdefaults)
514 seq_printf(m, "auto");
515 }
516 break;
517 case AF_INET6:
518 switch (nfss->mountd_protocol) {
519 case IPPROTO_UDP:
520 seq_printf(m, RPCBIND_NETID_UDP6);
521 break;
522 case IPPROTO_TCP:
523 seq_printf(m, RPCBIND_NETID_TCP6);
524 break;
525 default:
526 if (showdefaults)
527 seq_printf(m, "auto");
528 }
529 break;
530 default:
531 if (showdefaults)
532 seq_printf(m, "auto");
533 }
534}
535
495static void nfs_show_mountd_options(struct seq_file *m, struct nfs_server *nfss, 536static void nfs_show_mountd_options(struct seq_file *m, struct nfs_server *nfss,
496 int showdefaults) 537 int showdefaults)
497{ 538{
@@ -505,7 +546,7 @@ static void nfs_show_mountd_options(struct seq_file *m, struct nfs_server *nfss,
505 } 546 }
506 case AF_INET6: { 547 case AF_INET6: {
507 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap; 548 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
508 seq_printf(m, ",mountaddr=%pI6", &sin6->sin6_addr); 549 seq_printf(m, ",mountaddr=%pI6c", &sin6->sin6_addr);
509 break; 550 break;
510 } 551 }
511 default: 552 default:
@@ -518,17 +559,7 @@ static void nfs_show_mountd_options(struct seq_file *m, struct nfs_server *nfss,
518 if (nfss->mountd_port || showdefaults) 559 if (nfss->mountd_port || showdefaults)
519 seq_printf(m, ",mountport=%u", nfss->mountd_port); 560 seq_printf(m, ",mountport=%u", nfss->mountd_port);
520 561
521 switch (nfss->mountd_protocol) { 562 nfs_show_mountd_netid(m, nfss, showdefaults);
522 case IPPROTO_UDP:
523 seq_printf(m, ",mountproto=udp");
524 break;
525 case IPPROTO_TCP:
526 seq_printf(m, ",mountproto=tcp");
527 break;
528 default:
529 if (showdefaults)
530 seq_printf(m, ",mountproto=auto");
531 }
532} 563}
533 564
534/* 565/*
@@ -578,7 +609,7 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
578 seq_puts(m, nfs_infop->nostr); 609 seq_puts(m, nfs_infop->nostr);
579 } 610 }
580 seq_printf(m, ",proto=%s", 611 seq_printf(m, ",proto=%s",
581 rpc_peeraddr2str(nfss->client, RPC_DISPLAY_PROTO)); 612 rpc_peeraddr2str(nfss->client, RPC_DISPLAY_NETID));
582 if (version == 4) { 613 if (version == 4) {
583 if (nfss->port != NFS_PORT) 614 if (nfss->port != NFS_PORT)
584 seq_printf(m, ",port=%u", nfss->port); 615 seq_printf(m, ",port=%u", nfss->port);
@@ -714,8 +745,6 @@ static void nfs_umount_begin(struct super_block *sb)
714 struct nfs_server *server; 745 struct nfs_server *server;
715 struct rpc_clnt *rpc; 746 struct rpc_clnt *rpc;
716 747
717 lock_kernel();
718
719 server = NFS_SB(sb); 748 server = NFS_SB(sb);
720 /* -EIO all pending I/O */ 749 /* -EIO all pending I/O */
721 rpc = server->client_acl; 750 rpc = server->client_acl;
@@ -724,8 +753,6 @@ static void nfs_umount_begin(struct super_block *sb)
724 rpc = server->client; 753 rpc = server->client;
725 if (!IS_ERR(rpc)) 754 if (!IS_ERR(rpc))
726 rpc_killall_tasks(rpc); 755 rpc_killall_tasks(rpc);
727
728 unlock_kernel();
729} 756}
730 757
731static struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(unsigned int version) 758static struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(unsigned int version)
@@ -734,8 +761,6 @@ static struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(unsigned int ve
734 761
735 data = kzalloc(sizeof(*data), GFP_KERNEL); 762 data = kzalloc(sizeof(*data), GFP_KERNEL);
736 if (data) { 763 if (data) {
737 data->rsize = NFS_MAX_FILE_IO_SIZE;
738 data->wsize = NFS_MAX_FILE_IO_SIZE;
739 data->acregmin = NFS_DEF_ACREGMIN; 764 data->acregmin = NFS_DEF_ACREGMIN;
740 data->acregmax = NFS_DEF_ACREGMAX; 765 data->acregmax = NFS_DEF_ACREGMAX;
741 data->acdirmin = NFS_DEF_ACDIRMIN; 766 data->acdirmin = NFS_DEF_ACDIRMIN;
@@ -887,6 +912,8 @@ static int nfs_parse_mount_options(char *raw,
887{ 912{
888 char *p, *string, *secdata; 913 char *p, *string, *secdata;
889 int rc, sloppy = 0, invalid_option = 0; 914 int rc, sloppy = 0, invalid_option = 0;
915 unsigned short protofamily = AF_UNSPEC;
916 unsigned short mountfamily = AF_UNSPEC;
890 917
891 if (!raw) { 918 if (!raw) {
892 dfprintk(MOUNT, "NFS: mount options string was NULL.\n"); 919 dfprintk(MOUNT, "NFS: mount options string was NULL.\n");
@@ -1232,12 +1259,17 @@ static int nfs_parse_mount_options(char *raw,
1232 token = match_token(string, 1259 token = match_token(string,
1233 nfs_xprt_protocol_tokens, args); 1260 nfs_xprt_protocol_tokens, args);
1234 1261
1262 protofamily = AF_INET;
1235 switch (token) { 1263 switch (token) {
1264 case Opt_xprt_udp6:
1265 protofamily = AF_INET6;
1236 case Opt_xprt_udp: 1266 case Opt_xprt_udp:
1237 mnt->flags &= ~NFS_MOUNT_TCP; 1267 mnt->flags &= ~NFS_MOUNT_TCP;
1238 mnt->nfs_server.protocol = XPRT_TRANSPORT_UDP; 1268 mnt->nfs_server.protocol = XPRT_TRANSPORT_UDP;
1239 kfree(string); 1269 kfree(string);
1240 break; 1270 break;
1271 case Opt_xprt_tcp6:
1272 protofamily = AF_INET6;
1241 case Opt_xprt_tcp: 1273 case Opt_xprt_tcp:
1242 mnt->flags |= NFS_MOUNT_TCP; 1274 mnt->flags |= NFS_MOUNT_TCP;
1243 mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP; 1275 mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP;
@@ -1265,10 +1297,15 @@ static int nfs_parse_mount_options(char *raw,
1265 nfs_xprt_protocol_tokens, args); 1297 nfs_xprt_protocol_tokens, args);
1266 kfree(string); 1298 kfree(string);
1267 1299
1300 mountfamily = AF_INET;
1268 switch (token) { 1301 switch (token) {
1302 case Opt_xprt_udp6:
1303 mountfamily = AF_INET6;
1269 case Opt_xprt_udp: 1304 case Opt_xprt_udp:
1270 mnt->mount_server.protocol = XPRT_TRANSPORT_UDP; 1305 mnt->mount_server.protocol = XPRT_TRANSPORT_UDP;
1271 break; 1306 break;
1307 case Opt_xprt_tcp6:
1308 mountfamily = AF_INET6;
1272 case Opt_xprt_tcp: 1309 case Opt_xprt_tcp:
1273 mnt->mount_server.protocol = XPRT_TRANSPORT_TCP; 1310 mnt->mount_server.protocol = XPRT_TRANSPORT_TCP;
1274 break; 1311 break;
@@ -1367,8 +1404,33 @@ static int nfs_parse_mount_options(char *raw,
1367 if (!sloppy && invalid_option) 1404 if (!sloppy && invalid_option)
1368 return 0; 1405 return 0;
1369 1406
1407 /*
1408 * verify that any proto=/mountproto= options match the address
1409 * familiies in the addr=/mountaddr= options.
1410 */
1411 if (protofamily != AF_UNSPEC &&
1412 protofamily != mnt->nfs_server.address.ss_family)
1413 goto out_proto_mismatch;
1414
1415 if (mountfamily != AF_UNSPEC) {
1416 if (mnt->mount_server.addrlen) {
1417 if (mountfamily != mnt->mount_server.address.ss_family)
1418 goto out_mountproto_mismatch;
1419 } else {
1420 if (mountfamily != mnt->nfs_server.address.ss_family)
1421 goto out_mountproto_mismatch;
1422 }
1423 }
1424
1370 return 1; 1425 return 1;
1371 1426
1427out_mountproto_mismatch:
1428 printk(KERN_INFO "NFS: mount server address does not match mountproto= "
1429 "option\n");
1430 return 0;
1431out_proto_mismatch:
1432 printk(KERN_INFO "NFS: server address does not match proto= option\n");
1433 return 0;
1372out_invalid_address: 1434out_invalid_address:
1373 printk(KERN_INFO "NFS: bad IP address specified: %s\n", p); 1435 printk(KERN_INFO "NFS: bad IP address specified: %s\n", p);
1374 return 0; 1436 return 0;
@@ -1881,7 +1943,6 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
1881 if (data == NULL) 1943 if (data == NULL)
1882 return -ENOMEM; 1944 return -ENOMEM;
1883 1945
1884 lock_kernel();
1885 /* fill out struct with values from existing mount */ 1946 /* fill out struct with values from existing mount */
1886 data->flags = nfss->flags; 1947 data->flags = nfss->flags;
1887 data->rsize = nfss->rsize; 1948 data->rsize = nfss->rsize;
@@ -1907,7 +1968,6 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
1907 error = nfs_compare_remount_data(nfss, data); 1968 error = nfs_compare_remount_data(nfss, data);
1908out: 1969out:
1909 kfree(data); 1970 kfree(data);
1910 unlock_kernel();
1911 return error; 1971 return error;
1912} 1972}
1913 1973
diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c
index 1064c91ae810..6da3d3ff6edd 100644
--- a/fs/nfs/unlink.c
+++ b/fs/nfs/unlink.c
@@ -83,7 +83,7 @@ static void nfs_async_unlink_done(struct rpc_task *task, void *calldata)
83 struct inode *dir = data->dir; 83 struct inode *dir = data->dir;
84 84
85 if (!NFS_PROTO(dir)->unlink_done(task, dir)) 85 if (!NFS_PROTO(dir)->unlink_done(task, dir))
86 nfs4_restart_rpc(task, NFS_SERVER(dir)->nfs_client); 86 nfs_restart_rpc(task, NFS_SERVER(dir)->nfs_client);
87} 87}
88 88
89/** 89/**
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index b1ce2ea9b93b..d171696017f4 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1216,7 +1216,7 @@ int nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
1216 */ 1216 */
1217 argp->stable = NFS_FILE_SYNC; 1217 argp->stable = NFS_FILE_SYNC;
1218 } 1218 }
1219 nfs4_restart_rpc(task, server->nfs_client); 1219 nfs_restart_rpc(task, server->nfs_client);
1220 return -EAGAIN; 1220 return -EAGAIN;
1221 } 1221 }
1222 if (time_before(complain, jiffies)) { 1222 if (time_before(complain, jiffies)) {
@@ -1228,7 +1228,6 @@ int nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
1228 /* Can't do anything about it except throw an error. */ 1228 /* Can't do anything about it except throw an error. */
1229 task->tk_status = -EIO; 1229 task->tk_status = -EIO;
1230 } 1230 }
1231 nfs4_sequence_free_slot(server->nfs_client, &data->res.seq_res);
1232 return 0; 1231 return 0;
1233} 1232}
1234 1233
@@ -1612,15 +1611,16 @@ int nfs_migrate_page(struct address_space *mapping, struct page *newpage,
1612 if (ret) 1611 if (ret)
1613 goto out_unlock; 1612 goto out_unlock;
1614 page_cache_get(newpage); 1613 page_cache_get(newpage);
1614 spin_lock(&mapping->host->i_lock);
1615 req->wb_page = newpage; 1615 req->wb_page = newpage;
1616 SetPagePrivate(newpage); 1616 SetPagePrivate(newpage);
1617 set_page_private(newpage, page_private(page)); 1617 set_page_private(newpage, (unsigned long)req);
1618 ClearPagePrivate(page); 1618 ClearPagePrivate(page);
1619 set_page_private(page, 0); 1619 set_page_private(page, 0);
1620 spin_unlock(&mapping->host->i_lock);
1620 page_cache_release(page); 1621 page_cache_release(page);
1621out_unlock: 1622out_unlock:
1622 nfs_clear_page_tag_locked(req); 1623 nfs_clear_page_tag_locked(req);
1623 nfs_release_request(req);
1624out: 1624out:
1625 return ret; 1625 return ret;
1626} 1626}
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-26 17:03:16 -0500