callback_proc.c 15.7 KB
Newer Older
L
Linus Torvalds 已提交
1 2 3 4 5 6 7 8 9
/*
 * linux/fs/nfs/callback_proc.c
 *
 * Copyright (C) 2004 Trond Myklebust
 *
 * NFSv4 callback procedures
 */
#include <linux/nfs4.h>
#include <linux/nfs_fs.h>
10
#include <linux/slab.h>
11
#include <linux/rcupdate.h>
12
#include "nfs4_fs.h"
L
Linus Torvalds 已提交
13 14
#include "callback.h"
#include "delegation.h"
15
#include "internal.h"
F
Fred Isaman 已提交
16
#include "pnfs.h"
17
#include "nfs4session.h"
18
#include "nfs4trace.h"
L
Linus Torvalds 已提交
19 20

#define NFSDBG_FACILITY NFSDBG_CALLBACK
21 22 23 24

__be32 nfs4_callback_getattr(struct cb_getattrargs *args,
			     struct cb_getattrres *res,
			     struct cb_process_state *cps)
L
Linus Torvalds 已提交
25 26 27 28
{
	struct nfs_delegation *delegation;
	struct nfs_inode *nfsi;
	struct inode *inode;
29

30 31 32 33
	res->status = htonl(NFS4ERR_OP_NOT_IN_SESSION);
	if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */
		goto out;

L
Linus Torvalds 已提交
34 35
	res->bitmap[0] = res->bitmap[1] = 0;
	res->status = htonl(NFS4ERR_BADHANDLE);
36

37
	dprintk_rcu("NFS: GETATTR callback request from %s\n",
38
		rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR));
39

40
	inode = nfs_delegation_find_inode(cps->clp, &args->fh);
41
	if (inode == NULL) {
42
		trace_nfs4_cb_getattr(cps->clp, &args->fh, NULL,
43
				-ntohl(res->status));
44
		goto out;
45
	}
L
Linus Torvalds 已提交
46
	nfsi = NFS_I(inode);
47 48
	rcu_read_lock();
	delegation = rcu_dereference(nfsi->delegation);
L
Linus Torvalds 已提交
49 50 51
	if (delegation == NULL || (delegation->type & FMODE_WRITE) == 0)
		goto out_iput;
	res->size = i_size_read(inode);
52
	res->change_attr = delegation->change_attr;
53
	if (nfsi->nrequests != 0)
54
		res->change_attr++;
L
Linus Torvalds 已提交
55 56 57 58 59 60 61 62
	res->ctime = inode->i_ctime;
	res->mtime = inode->i_mtime;
	res->bitmap[0] = (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) &
		args->bitmap[0];
	res->bitmap[1] = (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) &
		args->bitmap[1];
	res->status = 0;
out_iput:
63
	rcu_read_unlock();
64
	trace_nfs4_cb_getattr(cps->clp, &args->fh, inode, -ntohl(res->status));
L
Linus Torvalds 已提交
65 66
	iput(inode);
out:
67
	dprintk("%s: exit with status = %d\n", __func__, ntohl(res->status));
L
Linus Torvalds 已提交
68 69 70
	return res->status;
}

71 72
__be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy,
			    struct cb_process_state *cps)
L
Linus Torvalds 已提交
73 74
{
	struct inode *inode;
75
	__be32 res;
L
Linus Torvalds 已提交
76
	
77 78
	res = htonl(NFS4ERR_OP_NOT_IN_SESSION);
	if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */
L
Linus Torvalds 已提交
79
		goto out;
80

81
	dprintk_rcu("NFS: RECALL callback request from %s\n",
82 83 84 85
		rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR));

	res = htonl(NFS4ERR_BADHANDLE);
	inode = nfs_delegation_find_inode(cps->clp, &args->fh);
86 87 88
	if (inode == NULL) {
		trace_nfs4_cb_recall(cps->clp, &args->fh, NULL,
				&args->stateid, -ntohl(res));
89
		goto out;
90
	}
91 92 93 94 95 96
	/* Set up a helper thread to actually return the delegation */
	switch (nfs_async_inode_return_delegation(inode, &args->stateid)) {
	case 0:
		res = 0;
		break;
	case -ENOENT:
97
		res = htonl(NFS4ERR_BAD_STATEID);
98 99 100 101
		break;
	default:
		res = htonl(NFS4ERR_RESOURCE);
	}
102 103
	trace_nfs4_cb_recall(cps->clp, &args->fh, inode,
			&args->stateid, -ntohl(res));
104
	iput(inode);
L
Linus Torvalds 已提交
105
out:
106
	dprintk("%s: exit with status = %d\n", __func__, ntohl(res));
L
Linus Torvalds 已提交
107 108
	return res;
}
109 110 111

#if defined(CONFIG_NFS_V4_1)

112 113 114 115 116 117 118 119 120
/*
 * Lookup a layout by filehandle.
 *
 * Note: gets a refcount on the layout hdr and on its respective inode.
 * Caller must put the layout hdr and the inode.
 *
 * TODO: keep track of all layouts (and delegations) in a hash table
 * hashed by filehandle.
 */
121 122
static struct pnfs_layout_hdr * get_layout_by_fh_locked(struct nfs_client *clp,
		struct nfs_fh *fh, nfs4_stateid *stateid)
F
Fred Isaman 已提交
123
{
124
	struct nfs_server *server;
F
Fred Isaman 已提交
125
	struct inode *ino;
126
	struct pnfs_layout_hdr *lo;
F
Fred Isaman 已提交
127

128 129
	list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
		list_for_each_entry(lo, &server->layouts, plh_layouts) {
130 131
			if (!nfs4_stateid_match_other(&lo->plh_stateid, stateid))
				continue;
132
			if (nfs_compare_fh(fh, &NFS_I(lo->plh_inode)->fh))
133 134 135
				continue;
			ino = igrab(lo->plh_inode);
			if (!ino)
136
				break;
137 138 139 140 141
			spin_lock(&ino->i_lock);
			/* Is this layout in the process of being freed? */
			if (NFS_I(ino)->layout != lo) {
				spin_unlock(&ino->i_lock);
				iput(ino);
142
				break;
143
			}
144
			pnfs_get_layout_hdr(lo);
145
			spin_unlock(&ino->i_lock);
146
			return lo;
147
		}
F
Fred Isaman 已提交
148
	}
149 150 151 152

	return NULL;
}

153 154
static struct pnfs_layout_hdr * get_layout_by_fh(struct nfs_client *clp,
		struct nfs_fh *fh, nfs4_stateid *stateid)
155 156 157 158 159
{
	struct pnfs_layout_hdr *lo;

	spin_lock(&clp->cl_lock);
	rcu_read_lock();
160
	lo = get_layout_by_fh_locked(clp, fh, stateid);
161
	rcu_read_unlock();
F
Fred Isaman 已提交
162
	spin_unlock(&clp->cl_lock);
163

164 165 166
	return lo;
}

167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182
/*
 * Enforce RFC5661 section 12.5.5.2.1. (Layout Recall and Return Sequencing)
 */
static bool pnfs_check_stateid_sequence(struct pnfs_layout_hdr *lo,
					const nfs4_stateid *new)
{
	u32 oldseq, newseq;

	oldseq = be32_to_cpu(lo->plh_stateid.seqid);
	newseq = be32_to_cpu(new->seqid);

	if (newseq > oldseq + 1)
		return false;
	return true;
}

183 184 185 186 187 188 189 190
static u32 initiate_file_draining(struct nfs_client *clp,
				  struct cb_layoutrecallargs *args)
{
	struct inode *ino;
	struct pnfs_layout_hdr *lo;
	u32 rv = NFS4ERR_NOMATCHING_LAYOUT;
	LIST_HEAD(free_me_list);

191
	lo = get_layout_by_fh(clp, &args->cbl_fh, &args->cbl_stateid);
192 193 194
	if (!lo) {
		trace_nfs4_cb_layoutrecall_file(clp, &args->cbl_fh, NULL,
				&args->cbl_stateid, -rv);
195
		goto out;
196
	}
F
Fred Isaman 已提交
197

198
	ino = lo->plh_inode;
199 200

	spin_lock(&ino->i_lock);
201 202 203 204
	if (!pnfs_check_stateid_sequence(lo, &args->cbl_stateid)) {
		rv = NFS4ERR_DELAY;
		goto unlock;
	}
205 206 207 208 209
	pnfs_set_layout_stateid(lo, &args->cbl_stateid, true);
	spin_unlock(&ino->i_lock);

	pnfs_layoutcommit_inode(ino, false);

F
Fred Isaman 已提交
210
	spin_lock(&ino->i_lock);
211 212 213 214 215 216 217 218 219
	/*
	 * Enforce RFC5661 Section 12.5.5.2.1.5 (Bulk Recall and Return)
	 */
	if (test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags)) {
		rv = NFS4ERR_DELAY;
		goto unlock;
	}

	if (pnfs_mark_matching_lsegs_invalid(lo, &free_me_list,
220
					&args->cbl_range)) {
221 222 223
		pnfs_mark_matching_lsegs_return(lo,
				&free_me_list,
				&args->cbl_range);
224
		rv = NFS4_OK;
225 226 227 228 229 230 231
		goto unlock;
	}

	if (NFS_SERVER(ino)->pnfs_curr_ld->return_range) {
		NFS_SERVER(ino)->pnfs_curr_ld->return_range(lo,
			&args->cbl_range);
	}
232
	pnfs_mark_layout_returned_if_empty(lo);
233
unlock:
F
Fred Isaman 已提交
234 235
	spin_unlock(&ino->i_lock);
	pnfs_free_lseg_list(&free_me_list);
236
	pnfs_put_layout_hdr(lo);
237 238
	trace_nfs4_cb_layoutrecall_file(clp, &args->cbl_fh, ino,
			&args->cbl_stateid, -rv);
F
Fred Isaman 已提交
239
	iput(ino);
240
out:
F
Fred Isaman 已提交
241 242 243 244 245 246
	return rv;
}

static u32 initiate_bulk_draining(struct nfs_client *clp,
				  struct cb_layoutrecallargs *args)
{
247
	int stat;
248

249 250 251 252 253 254 255
	if (args->cbl_recall_type == RETURN_FSID)
		stat = pnfs_destroy_layouts_byfsid(clp, &args->cbl_fsid, true);
	else
		stat = pnfs_destroy_layouts_byclid(clp, true);
	if (stat != 0)
		return NFS4ERR_DELAY;
	return NFS4ERR_NOMATCHING_LAYOUT;
F
Fred Isaman 已提交
256 257 258 259 260
}

static u32 do_callback_layoutrecall(struct nfs_client *clp,
				    struct cb_layoutrecallargs *args)
{
261
	u32 res;
F
Fred Isaman 已提交
262 263 264 265 266 267 268 269 270 271 272

	dprintk("%s enter, type=%i\n", __func__, args->cbl_recall_type);
	if (args->cbl_recall_type == RETURN_FILE)
		res = initiate_file_draining(clp, args);
	else
		res = initiate_bulk_draining(clp, args);
	dprintk("%s returning %i\n", __func__, res);
	return res;

}

F
Fred Isaman 已提交
273 274 275
__be32 nfs4_callback_layoutrecall(struct cb_layoutrecallargs *args,
				  void *dummy, struct cb_process_state *cps)
{
F
Fred Isaman 已提交
276 277 278 279 280 281 282 283 284 285 286
	u32 res;

	dprintk("%s: -->\n", __func__);

	if (cps->clp)
		res = do_callback_layoutrecall(cps->clp, args);
	else
		res = NFS4ERR_OP_NOT_IN_SESSION;

	dprintk("%s: exit with status = %d\n", __func__, res);
	return cpu_to_be32(res);
F
Fred Isaman 已提交
287 288
}

289 290 291 292 293 294 295 296 297 298 299
static void pnfs_recall_all_layouts(struct nfs_client *clp)
{
	struct cb_layoutrecallargs args;

	/* Pretend we got a CB_LAYOUTRECALL(ALL) */
	memset(&args, 0, sizeof(args));
	args.cbl_recall_type = RETURN_ALL;
	/* FIXME we ignore errors, what should we do? */
	do_callback_layoutrecall(clp, &args);
}

M
Marc Eshel 已提交
300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333
__be32 nfs4_callback_devicenotify(struct cb_devicenotifyargs *args,
				  void *dummy, struct cb_process_state *cps)
{
	int i;
	__be32 res = 0;
	struct nfs_client *clp = cps->clp;
	struct nfs_server *server = NULL;

	dprintk("%s: -->\n", __func__);

	if (!clp) {
		res = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION);
		goto out;
	}

	for (i = 0; i < args->ndevs; i++) {
		struct cb_devicenotifyitem *dev = &args->devs[i];

		if (!server ||
		    server->pnfs_curr_ld->id != dev->cbd_layout_type) {
			rcu_read_lock();
			list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link)
				if (server->pnfs_curr_ld &&
				    server->pnfs_curr_ld->id == dev->cbd_layout_type) {
					rcu_read_unlock();
					goto found;
				}
			rcu_read_unlock();
			dprintk("%s: layout type %u not found\n",
				__func__, dev->cbd_layout_type);
			continue;
		}

	found:
334
		nfs4_delete_deviceid(server->pnfs_curr_ld, clp, &dev->cbd_dev_id);
M
Marc Eshel 已提交
335 336 337 338 339 340 341 342 343
	}

out:
	kfree(args->devs);
	dprintk("%s: exit with status = %u\n",
		__func__, be32_to_cpu(res));
	return res;
}

344 345 346 347 348
/*
 * Validate the sequenceID sent by the server.
 * Return success if the sequenceID is one more than what we last saw on
 * this slot, accounting for wraparound.  Increments the slot's sequence.
 *
349 350
 * We don't yet implement a duplicate request cache, instead we set the
 * back channel ca_maxresponsesize_cached to zero. This is OK for now
351 352 353 354 355 356
 * since we only currently implement idempotent callbacks anyway.
 *
 * We have a single slot backchannel at this time, so we don't bother
 * checking the used_slots bit array on the table.  The lower layer guarantees
 * a single outstanding callback request at a time.
 */
357
static __be32
358
validate_seqid(struct nfs4_slot_table *tbl, struct cb_sequenceargs * args)
359 360 361
{
	struct nfs4_slot *slot;

362
	dprintk("%s enter. slotid %u seqid %u\n",
363
		__func__, args->csa_slotid, args->csa_sequenceid);
364

365
	if (args->csa_slotid >= NFS41_BC_MAX_CALLBACKS)
366 367
		return htonl(NFS4ERR_BADSLOT);

368
	slot = tbl->slots + args->csa_slotid;
369
	dprintk("%s slot table seqid: %u\n", __func__, slot->seq_nr);
370 371

	/* Normal */
372
	if (likely(args->csa_sequenceid == slot->seq_nr + 1))
373
		goto out_ok;
374 375

	/* Replay */
376
	if (args->csa_sequenceid == slot->seq_nr) {
377
		dprintk("%s seqid %u is a replay\n",
378
			__func__, args->csa_sequenceid);
379 380 381 382 383 384 385
		/* Signal process_op to set this error on next op */
		if (args->csa_cachethis == 0)
			return htonl(NFS4ERR_RETRY_UNCACHED_REP);

		/* The ca_maxresponsesize_cached is 0 with no DRC */
		else if (args->csa_cachethis == 1)
			return htonl(NFS4ERR_REP_TOO_BIG_TO_CACHE);
386 387 388
	}

	/* Wraparound */
389
	if (args->csa_sequenceid == 1 && (slot->seq_nr + 1) == 0) {
390
		slot->seq_nr = 1;
391
		goto out_ok;
392 393 394 395
	}

	/* Misordered request */
	return htonl(NFS4ERR_SEQ_MISORDERED);
396 397 398
out_ok:
	tbl->highest_used_slotid = args->csa_slotid;
	return htonl(NFS4_OK);
399 400
}

401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455
/*
 * For each referring call triple, check the session's slot table for
 * a match.  If the slot is in use and the sequence numbers match, the
 * client is still waiting for a response to the original request.
 */
static bool referring_call_exists(struct nfs_client *clp,
				  uint32_t nrclists,
				  struct referring_call_list *rclists)
{
	bool status = 0;
	int i, j;
	struct nfs4_session *session;
	struct nfs4_slot_table *tbl;
	struct referring_call_list *rclist;
	struct referring_call *ref;

	/*
	 * XXX When client trunking is implemented, this becomes
	 * a session lookup from within the loop
	 */
	session = clp->cl_session;
	tbl = &session->fc_slot_table;

	for (i = 0; i < nrclists; i++) {
		rclist = &rclists[i];
		if (memcmp(session->sess_id.data,
			   rclist->rcl_sessionid.data,
			   NFS4_MAX_SESSIONID_LEN) != 0)
			continue;

		for (j = 0; j < rclist->rcl_nrefcalls; j++) {
			ref = &rclist->rcl_refcalls[j];

			dprintk("%s: sessionid %x:%x:%x:%x sequenceid %u "
				"slotid %u\n", __func__,
				((u32 *)&rclist->rcl_sessionid.data)[0],
				((u32 *)&rclist->rcl_sessionid.data)[1],
				((u32 *)&rclist->rcl_sessionid.data)[2],
				((u32 *)&rclist->rcl_sessionid.data)[3],
				ref->rc_sequenceid, ref->rc_slotid);

			spin_lock(&tbl->slot_tbl_lock);
			status = (test_bit(ref->rc_slotid, tbl->used_slots) &&
				  tbl->slots[ref->rc_slotid].seq_nr ==
					ref->rc_sequenceid);
			spin_unlock(&tbl->slot_tbl_lock);
			if (status)
				goto out;
		}
	}

out:
	return status;
}

456
__be32 nfs4_callback_sequence(struct cb_sequenceargs *args,
457 458
			      struct cb_sequenceres *res,
			      struct cb_process_state *cps)
459
{
460
	struct nfs4_slot_table *tbl;
461
	struct nfs4_slot *slot;
462
	struct nfs_client *clp;
463
	int i;
464
	__be32 status = htonl(NFS4ERR_BADSESSION);
465

466 467
	clp = nfs4_find_client_sessionid(cps->net, args->csa_addr,
					 &args->csa_sessionid, cps->minorversion);
468 469 470
	if (clp == NULL)
		goto out;

471 472
	if (!(clp->cl_session->flags & SESSION4_BACK_CHAN))
		goto out;
473

474
	tbl = &clp->cl_session->bc_slot_table;
475
	slot = tbl->slots + args->csa_slotid;
476 477

	spin_lock(&tbl->slot_tbl_lock);
478
	/* state manager is resetting the session */
479
	if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state)) {
480
		status = htonl(NFS4ERR_DELAY);
481 482 483 484 485
		/* Return NFS4ERR_BADSESSION if we're draining the session
		 * in order to reset it.
		 */
		if (test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state))
			status = htonl(NFS4ERR_BADSESSION);
486
		goto out_unlock;
487 488
	}

489 490 491 492 493 494 495
	memcpy(&res->csr_sessionid, &args->csa_sessionid,
	       sizeof(res->csr_sessionid));
	res->csr_sequenceid = args->csa_sequenceid;
	res->csr_slotid = args->csa_slotid;
	res->csr_highestslotid = NFS41_BC_MAX_CALLBACKS - 1;
	res->csr_target_highestslotid = NFS41_BC_MAX_CALLBACKS - 1;

496
	status = validate_seqid(tbl, args);
497
	if (status)
498
		goto out_unlock;
499

500 501
	cps->slotid = args->csa_slotid;

502 503 504 505 506 507 508
	/*
	 * Check for pending referring calls.  If a match is found, a
	 * related callback was received before the response to the original
	 * call.
	 */
	if (referring_call_exists(clp, args->csa_nrclists, args->csa_rclists)) {
		status = htonl(NFS4ERR_DELAY);
509
		goto out_unlock;
510 511
	}

512 513 514 515 516 517
	/*
	 * RFC5661 20.9.3
	 * If CB_SEQUENCE returns an error, then the state of the slot
	 * (sequence ID, cached reply) MUST NOT change.
	 */
	slot->seq_nr++;
518 519
out_unlock:
	spin_unlock(&tbl->slot_tbl_lock);
520

521
out:
522
	cps->clp = clp; /* put in nfs4_callback_compound */
523 524 525 526
	for (i = 0; i < args->csa_nrclists; i++)
		kfree(args->csa_rclists[i].rcl_refcalls);
	kfree(args->csa_rclists);

527 528 529 530
	if (status == htonl(NFS4ERR_RETRY_UNCACHED_REP)) {
		cps->drc_status = status;
		status = 0;
	} else
531
		res->csr_status = status;
532

533
	trace_nfs4_cb_sequence(args, res, status);
534 535 536
	dprintk("%s: exit with status = %d res->csr_status %d\n", __func__,
		ntohl(status), ntohl(res->csr_status));
	return status;
537 538
}

539 540 541 542 543 544
static bool
validate_bitmap_values(unsigned long mask)
{
	return (mask & ~RCA4_TYPE_MASK_ALL) == 0;
}

545 546
__be32 nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy,
			       struct cb_process_state *cps)
547
{
548
	__be32 status;
549 550
	fmode_t flags = 0;

551
	status = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION);
552
	if (!cps->clp) /* set in cb_sequence */
553 554
		goto out;

555
	dprintk_rcu("NFS: RECALL_ANY callback request from %s\n",
556
		rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR));
557

558 559 560 561 562
	status = cpu_to_be32(NFS4ERR_INVAL);
	if (!validate_bitmap_values(args->craa_type_mask))
		goto out;

	status = cpu_to_be32(NFS4_OK);
563 564 565 566 567 568
	if (test_bit(RCA4_TYPE_MASK_RDATA_DLG, (const unsigned long *)
		     &args->craa_type_mask))
		flags = FMODE_READ;
	if (test_bit(RCA4_TYPE_MASK_WDATA_DLG, (const unsigned long *)
		     &args->craa_type_mask))
		flags |= FMODE_WRITE;
569 570 571
	if (test_bit(RCA4_TYPE_MASK_FILE_LAYOUT, (const unsigned long *)
		     &args->craa_type_mask))
		pnfs_recall_all_layouts(cps->clp);
572
	if (flags)
573
		nfs_expire_unused_delegation_types(cps->clp, flags);
574 575 576 577
out:
	dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
	return status;
}
A
Andy Adamson 已提交
578 579

/* Reduce the fore channel's max_slots to the target value */
580 581
__be32 nfs4_callback_recallslot(struct cb_recallslotargs *args, void *dummy,
				struct cb_process_state *cps)
A
Andy Adamson 已提交
582 583
{
	struct nfs4_slot_table *fc_tbl;
584
	__be32 status;
A
Andy Adamson 已提交
585 586

	status = htonl(NFS4ERR_OP_NOT_IN_SESSION);
587
	if (!cps->clp) /* set in cb_sequence */
A
Andy Adamson 已提交
588 589
		goto out;

590
	dprintk_rcu("NFS: CB_RECALL_SLOT request from %s target highest slotid %u\n",
591
		rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR),
592
		args->crsa_target_highest_slotid);
A
Andy Adamson 已提交
593

594
	fc_tbl = &cps->clp->cl_session->fc_slot_table;
A
Andy Adamson 已提交
595

596
	status = htonl(NFS4_OK);
A
Andy Adamson 已提交
597

598
	nfs41_set_target_slotid(fc_tbl, args->crsa_target_highest_slotid);
599
	nfs41_notify_server(cps->clp);
A
Andy Adamson 已提交
600 601 602 603
out:
	dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
	return status;
}
604
#endif /* CONFIG_NFS_V4_1 */