1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (C) 1992, 1993, 1994 Rick Sladkey
7 * OS-independent nfs remote procedure call functions
9 * Tuned by Alan Cox <A.Cox@swansea.ac.uk> for >3K buffers
10 * so at last we can have decent(ish) throughput off a
13 * Coding optimized and cleaned up by Florian La Roche.
14 * Note: Error returns are optimized for NFS_OK, which isn't translated via
15 * nfs_stat_to_errno(), but happens to be already the right return code.
17 * Also, the code currently doesn't check the size of the packet, when
18 * it decodes the packet.
20 * Feel free to fix it and mail me the diffs if it worries you.
22 * Completely rewritten to support the new RPC call interface;
23 * rewrote and moved the entire XDR stuff to xdr.c
24 * --Olaf Kirch June 1996
26 * The code below initializes all auto variables explicitly, otherwise
27 * it will fail to work as a module (gcc generates a memset call for an
31 #include <linux/types.h>
32 #include <linux/param.h>
33 #include <linux/time.h>
35 #include <linux/errno.h>
36 #include <linux/string.h>
38 #include <linux/pagemap.h>
39 #include <linux/sunrpc/clnt.h>
40 #include <linux/nfs.h>
41 #include <linux/nfs2.h>
42 #include <linux/nfs_fs.h>
43 #include <linux/nfs_page.h>
44 #include <linux/lockd/bind.h>
45 #include <linux/freezer.h>
48 #define NFSDBG_FACILITY NFSDBG_PROC
51 * Bare-bones access to getattr: this is for nfs_read_super.
54 nfs_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
55 struct nfs_fsinfo
*info
)
57 struct nfs_fattr
*fattr
= info
->fattr
;
58 struct nfs2_fsstat fsinfo
;
59 struct rpc_message msg
= {
60 .rpc_proc
= &nfs_procedures
[NFSPROC_GETATTR
],
66 dprintk("%s: call getattr\n", __func__
);
67 nfs_fattr_init(fattr
);
68 status
= rpc_call_sync(server
->client
, &msg
, 0);
69 /* Retry with default authentication if different */
70 if (status
&& server
->nfs_client
->cl_rpcclient
!= server
->client
)
71 status
= rpc_call_sync(server
->nfs_client
->cl_rpcclient
, &msg
, 0);
72 dprintk("%s: reply getattr: %d\n", __func__
, status
);
75 dprintk("%s: call statfs\n", __func__
);
76 msg
.rpc_proc
= &nfs_procedures
[NFSPROC_STATFS
];
77 msg
.rpc_resp
= &fsinfo
;
78 status
= rpc_call_sync(server
->client
, &msg
, 0);
79 /* Retry with default authentication if different */
80 if (status
&& server
->nfs_client
->cl_rpcclient
!= server
->client
)
81 status
= rpc_call_sync(server
->nfs_client
->cl_rpcclient
, &msg
, 0);
82 dprintk("%s: reply statfs: %d\n", __func__
, status
);
85 info
->rtmax
= NFS_MAXDATA
;
86 info
->rtpref
= fsinfo
.tsize
;
87 info
->rtmult
= fsinfo
.bsize
;
88 info
->wtmax
= NFS_MAXDATA
;
89 info
->wtpref
= fsinfo
.tsize
;
90 info
->wtmult
= fsinfo
.bsize
;
91 info
->dtpref
= fsinfo
.tsize
;
92 info
->maxfilesize
= 0x7FFFFFFF;
94 info
->change_attr_type
= NFS4_CHANGE_TYPE_IS_TIME_METADATA
;
99 * One function for each procedure in the NFS protocol.
102 nfs_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
103 struct nfs_fattr
*fattr
, struct nfs4_label
*label
,
106 struct rpc_message msg
= {
107 .rpc_proc
= &nfs_procedures
[NFSPROC_GETATTR
],
112 unsigned short task_flags
= 0;
114 /* Is this is an attribute revalidation, subject to softreval? */
115 if (inode
&& (server
->flags
& NFS_MOUNT_SOFTREVAL
))
116 task_flags
|= RPC_TASK_TIMEOUT
;
118 dprintk("NFS call getattr\n");
119 nfs_fattr_init(fattr
);
120 status
= rpc_call_sync(server
->client
, &msg
, task_flags
);
121 dprintk("NFS reply getattr: %d\n", status
);
126 nfs_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
129 struct inode
*inode
= d_inode(dentry
);
130 struct nfs_sattrargs arg
= {
134 struct rpc_message msg
= {
135 .rpc_proc
= &nfs_procedures
[NFSPROC_SETATTR
],
141 /* Mask out the non-modebit related stuff from attr->ia_mode */
142 sattr
->ia_mode
&= S_IALLUGO
;
144 dprintk("NFS call setattr\n");
145 if (sattr
->ia_valid
& ATTR_FILE
)
146 msg
.rpc_cred
= nfs_file_cred(sattr
->ia_file
);
147 nfs_fattr_init(fattr
);
148 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
150 nfs_setattr_update_inode(inode
, sattr
, fattr
);
151 dprintk("NFS reply setattr: %d\n", status
);
156 nfs_proc_lookup(struct inode
*dir
, struct dentry
*dentry
,
157 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
158 struct nfs4_label
*label
)
160 struct nfs_diropargs arg
= {
162 .name
= dentry
->d_name
.name
,
163 .len
= dentry
->d_name
.len
165 struct nfs_diropok res
= {
169 struct rpc_message msg
= {
170 .rpc_proc
= &nfs_procedures
[NFSPROC_LOOKUP
],
175 unsigned short task_flags
= 0;
177 /* Is this is an attribute revalidation, subject to softreval? */
178 if (nfs_lookup_is_soft_revalidate(dentry
))
179 task_flags
|= RPC_TASK_TIMEOUT
;
181 dprintk("NFS call lookup %pd2\n", dentry
);
182 nfs_fattr_init(fattr
);
183 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, task_flags
);
184 dprintk("NFS reply lookup: %d\n", status
);
188 static int nfs_proc_readlink(struct inode
*inode
, struct page
*page
,
189 unsigned int pgbase
, unsigned int pglen
)
191 struct nfs_readlinkargs args
= {
197 struct rpc_message msg
= {
198 .rpc_proc
= &nfs_procedures
[NFSPROC_READLINK
],
203 dprintk("NFS call readlink\n");
204 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
205 dprintk("NFS reply readlink: %d\n", status
);
209 struct nfs_createdata
{
210 struct nfs_createargs arg
;
211 struct nfs_diropok res
;
212 struct nfs_fh fhandle
;
213 struct nfs_fattr fattr
;
216 static struct nfs_createdata
*nfs_alloc_createdata(struct inode
*dir
,
217 struct dentry
*dentry
, struct iattr
*sattr
)
219 struct nfs_createdata
*data
;
221 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
224 data
->arg
.fh
= NFS_FH(dir
);
225 data
->arg
.name
= dentry
->d_name
.name
;
226 data
->arg
.len
= dentry
->d_name
.len
;
227 data
->arg
.sattr
= sattr
;
228 nfs_fattr_init(&data
->fattr
);
229 data
->fhandle
.size
= 0;
230 data
->res
.fh
= &data
->fhandle
;
231 data
->res
.fattr
= &data
->fattr
;
236 static void nfs_free_createdata(const struct nfs_createdata
*data
)
242 nfs_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
245 struct nfs_createdata
*data
;
246 struct rpc_message msg
= {
247 .rpc_proc
= &nfs_procedures
[NFSPROC_CREATE
],
249 int status
= -ENOMEM
;
251 dprintk("NFS call create %pd\n", dentry
);
252 data
= nfs_alloc_createdata(dir
, dentry
, sattr
);
255 msg
.rpc_argp
= &data
->arg
;
256 msg
.rpc_resp
= &data
->res
;
257 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
258 nfs_mark_for_revalidate(dir
);
260 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, NULL
);
261 nfs_free_createdata(data
);
263 dprintk("NFS reply create: %d\n", status
);
268 * In NFSv2, mknod is grafted onto the create call.
271 nfs_proc_mknod(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
274 struct nfs_createdata
*data
;
275 struct rpc_message msg
= {
276 .rpc_proc
= &nfs_procedures
[NFSPROC_CREATE
],
279 int status
= -ENOMEM
;
281 dprintk("NFS call mknod %pd\n", dentry
);
283 mode
= sattr
->ia_mode
;
284 if (S_ISFIFO(mode
)) {
285 sattr
->ia_mode
= (mode
& ~S_IFMT
) | S_IFCHR
;
286 sattr
->ia_valid
&= ~ATTR_SIZE
;
287 } else if (S_ISCHR(mode
) || S_ISBLK(mode
)) {
288 sattr
->ia_valid
|= ATTR_SIZE
;
289 sattr
->ia_size
= new_encode_dev(rdev
);/* get out your barf bag */
292 data
= nfs_alloc_createdata(dir
, dentry
, sattr
);
295 msg
.rpc_argp
= &data
->arg
;
296 msg
.rpc_resp
= &data
->res
;
298 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
299 nfs_mark_for_revalidate(dir
);
301 if (status
== -EINVAL
&& S_ISFIFO(mode
)) {
302 sattr
->ia_mode
= mode
;
303 nfs_fattr_init(data
->res
.fattr
);
304 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
307 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, NULL
);
308 nfs_free_createdata(data
);
310 dprintk("NFS reply mknod: %d\n", status
);
315 nfs_proc_remove(struct inode
*dir
, struct dentry
*dentry
)
317 struct nfs_removeargs arg
= {
319 .name
= dentry
->d_name
,
321 struct rpc_message msg
= {
322 .rpc_proc
= &nfs_procedures
[NFSPROC_REMOVE
],
327 dprintk("NFS call remove %pd2\n",dentry
);
328 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
329 nfs_mark_for_revalidate(dir
);
331 dprintk("NFS reply remove: %d\n", status
);
336 nfs_proc_unlink_setup(struct rpc_message
*msg
,
337 struct dentry
*dentry
,
340 msg
->rpc_proc
= &nfs_procedures
[NFSPROC_REMOVE
];
343 static void nfs_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
345 rpc_call_start(task
);
348 static int nfs_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
350 nfs_mark_for_revalidate(dir
);
355 nfs_proc_rename_setup(struct rpc_message
*msg
,
356 struct dentry
*old_dentry
,
357 struct dentry
*new_dentry
)
359 msg
->rpc_proc
= &nfs_procedures
[NFSPROC_RENAME
];
362 static void nfs_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
364 rpc_call_start(task
);
368 nfs_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
369 struct inode
*new_dir
)
371 nfs_mark_for_revalidate(old_dir
);
372 nfs_mark_for_revalidate(new_dir
);
377 nfs_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
379 struct nfs_linkargs arg
= {
380 .fromfh
= NFS_FH(inode
),
382 .toname
= name
->name
,
385 struct rpc_message msg
= {
386 .rpc_proc
= &nfs_procedures
[NFSPROC_LINK
],
391 dprintk("NFS call link %s\n", name
->name
);
392 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
393 nfs_mark_for_revalidate(inode
);
394 nfs_mark_for_revalidate(dir
);
395 dprintk("NFS reply link: %d\n", status
);
400 nfs_proc_symlink(struct inode
*dir
, struct dentry
*dentry
, struct page
*page
,
401 unsigned int len
, struct iattr
*sattr
)
404 struct nfs_fattr
*fattr
;
405 struct nfs_symlinkargs arg
= {
406 .fromfh
= NFS_FH(dir
),
407 .fromname
= dentry
->d_name
.name
,
408 .fromlen
= dentry
->d_name
.len
,
413 struct rpc_message msg
= {
414 .rpc_proc
= &nfs_procedures
[NFSPROC_SYMLINK
],
417 int status
= -ENAMETOOLONG
;
419 dprintk("NFS call symlink %pd\n", dentry
);
421 if (len
> NFS2_MAXPATHLEN
)
424 fh
= nfs_alloc_fhandle();
425 fattr
= nfs_alloc_fattr();
427 if (fh
== NULL
|| fattr
== NULL
)
430 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
431 nfs_mark_for_revalidate(dir
);
434 * V2 SYMLINK requests don't return any attributes. Setting the
435 * filehandle size to zero indicates to nfs_instantiate that it
436 * should fill in the data with a LOOKUP call on the wire.
439 status
= nfs_instantiate(dentry
, fh
, fattr
, NULL
);
442 nfs_free_fattr(fattr
);
443 nfs_free_fhandle(fh
);
445 dprintk("NFS reply symlink: %d\n", status
);
450 nfs_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
)
452 struct nfs_createdata
*data
;
453 struct rpc_message msg
= {
454 .rpc_proc
= &nfs_procedures
[NFSPROC_MKDIR
],
456 int status
= -ENOMEM
;
458 dprintk("NFS call mkdir %pd\n", dentry
);
459 data
= nfs_alloc_createdata(dir
, dentry
, sattr
);
462 msg
.rpc_argp
= &data
->arg
;
463 msg
.rpc_resp
= &data
->res
;
465 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
466 nfs_mark_for_revalidate(dir
);
468 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, NULL
);
469 nfs_free_createdata(data
);
471 dprintk("NFS reply mkdir: %d\n", status
);
476 nfs_proc_rmdir(struct inode
*dir
, const struct qstr
*name
)
478 struct nfs_diropargs arg
= {
483 struct rpc_message msg
= {
484 .rpc_proc
= &nfs_procedures
[NFSPROC_RMDIR
],
489 dprintk("NFS call rmdir %s\n", name
->name
);
490 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
491 nfs_mark_for_revalidate(dir
);
492 dprintk("NFS reply rmdir: %d\n", status
);
497 * The READDIR implementation is somewhat hackish - we pass a temporary
498 * buffer to the encode function, which installs it in the receive
499 * the receive iovec. The decode function just parses the reply to make
500 * sure it is syntactically correct; the entries itself are decoded
501 * from nfs_readdir by calling the decode_entry function directly.
503 static int nfs_proc_readdir(struct nfs_readdir_arg
*nr_arg
,
504 struct nfs_readdir_res
*nr_res
)
506 struct inode
*dir
= d_inode(nr_arg
->dentry
);
507 struct nfs_readdirargs arg
= {
509 .cookie
= nr_arg
->cookie
,
510 .count
= nr_arg
->page_len
,
511 .pages
= nr_arg
->pages
,
513 struct rpc_message msg
= {
514 .rpc_proc
= &nfs_procedures
[NFSPROC_READDIR
],
516 .rpc_cred
= nr_arg
->cred
,
520 dprintk("NFS call readdir %llu\n", (unsigned long long)nr_arg
->cookie
);
521 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
522 nr_res
->verf
[0] = nr_res
->verf
[1] = 0;
524 nfs_invalidate_atime(dir
);
526 dprintk("NFS reply readdir: %d\n", status
);
531 nfs_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
532 struct nfs_fsstat
*stat
)
534 struct nfs2_fsstat fsinfo
;
535 struct rpc_message msg
= {
536 .rpc_proc
= &nfs_procedures
[NFSPROC_STATFS
],
542 dprintk("NFS call statfs\n");
543 nfs_fattr_init(stat
->fattr
);
544 status
= rpc_call_sync(server
->client
, &msg
, 0);
545 dprintk("NFS reply statfs: %d\n", status
);
548 stat
->tbytes
= (u64
)fsinfo
.blocks
* fsinfo
.bsize
;
549 stat
->fbytes
= (u64
)fsinfo
.bfree
* fsinfo
.bsize
;
550 stat
->abytes
= (u64
)fsinfo
.bavail
* fsinfo
.bsize
;
559 nfs_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
560 struct nfs_fsinfo
*info
)
562 struct nfs2_fsstat fsinfo
;
563 struct rpc_message msg
= {
564 .rpc_proc
= &nfs_procedures
[NFSPROC_STATFS
],
570 dprintk("NFS call fsinfo\n");
571 nfs_fattr_init(info
->fattr
);
572 status
= rpc_call_sync(server
->client
, &msg
, 0);
573 dprintk("NFS reply fsinfo: %d\n", status
);
576 info
->rtmax
= NFS_MAXDATA
;
577 info
->rtpref
= fsinfo
.tsize
;
578 info
->rtmult
= fsinfo
.bsize
;
579 info
->wtmax
= NFS_MAXDATA
;
580 info
->wtpref
= fsinfo
.tsize
;
581 info
->wtmult
= fsinfo
.bsize
;
582 info
->dtpref
= fsinfo
.tsize
;
583 info
->maxfilesize
= 0x7FFFFFFF;
584 info
->lease_time
= 0;
590 nfs_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
591 struct nfs_pathconf
*info
)
594 info
->max_namelen
= NFS2_MAXNAMLEN
;
598 static int nfs_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
600 struct inode
*inode
= hdr
->inode
;
602 nfs_invalidate_atime(inode
);
603 if (task
->tk_status
>= 0) {
604 nfs_refresh_inode(inode
, hdr
->res
.fattr
);
605 /* Emulate the eof flag, which isn't normally needed in NFSv2
606 * as it is guaranteed to always return the file attributes
608 if ((hdr
->res
.count
== 0 && hdr
->args
.count
> 0) ||
609 hdr
->args
.offset
+ hdr
->res
.count
>= hdr
->res
.fattr
->size
)
615 static void nfs_proc_read_setup(struct nfs_pgio_header
*hdr
,
616 struct rpc_message
*msg
)
618 msg
->rpc_proc
= &nfs_procedures
[NFSPROC_READ
];
621 static int nfs_proc_pgio_rpc_prepare(struct rpc_task
*task
,
622 struct nfs_pgio_header
*hdr
)
624 rpc_call_start(task
);
628 static int nfs_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
630 if (task
->tk_status
>= 0) {
631 hdr
->res
.count
= hdr
->args
.count
;
632 nfs_writeback_update_inode(hdr
);
637 static void nfs_proc_write_setup(struct nfs_pgio_header
*hdr
,
638 struct rpc_message
*msg
,
639 struct rpc_clnt
**clnt
)
641 /* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */
642 hdr
->args
.stable
= NFS_FILE_SYNC
;
643 msg
->rpc_proc
= &nfs_procedures
[NFSPROC_WRITE
];
646 static void nfs_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
652 nfs_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
,
653 struct rpc_clnt
**clnt
)
659 nfs_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*fl
)
661 struct inode
*inode
= file_inode(filp
);
663 return nlmclnt_proc(NFS_SERVER(inode
)->nlm_host
, cmd
, fl
, NULL
);
666 /* Helper functions for NFS lock bounds checking */
667 #define NFS_LOCK32_OFFSET_MAX ((__s32)0x7fffffffUL)
668 static int nfs_lock_check_bounds(const struct file_lock
*fl
)
672 start
= (__s32
)fl
->fl_start
;
673 if ((loff_t
)start
!= fl
->fl_start
)
676 if (fl
->fl_end
!= OFFSET_MAX
) {
677 end
= (__s32
)fl
->fl_end
;
678 if ((loff_t
)end
!= fl
->fl_end
)
681 end
= NFS_LOCK32_OFFSET_MAX
;
683 if (start
< 0 || start
> end
)
690 static int nfs_have_delegation(struct inode
*inode
, fmode_t flags
)
695 static const struct inode_operations nfs_dir_inode_operations
= {
696 .create
= nfs_create
,
697 .lookup
= nfs_lookup
,
699 .unlink
= nfs_unlink
,
700 .symlink
= nfs_symlink
,
704 .rename
= nfs_rename
,
705 .permission
= nfs_permission
,
706 .getattr
= nfs_getattr
,
707 .setattr
= nfs_setattr
,
710 static const struct inode_operations nfs_file_inode_operations
= {
711 .permission
= nfs_permission
,
712 .getattr
= nfs_getattr
,
713 .setattr
= nfs_setattr
,
716 const struct nfs_rpc_ops nfs_v2_clientops
= {
717 .version
= 2, /* protocol version */
718 .dentry_ops
= &nfs_dentry_operations
,
719 .dir_inode_ops
= &nfs_dir_inode_operations
,
720 .file_inode_ops
= &nfs_file_inode_operations
,
721 .file_ops
= &nfs_file_operations
,
722 .getroot
= nfs_proc_get_root
,
723 .submount
= nfs_submount
,
724 .try_get_tree
= nfs_try_get_tree
,
725 .getattr
= nfs_proc_getattr
,
726 .setattr
= nfs_proc_setattr
,
727 .lookup
= nfs_proc_lookup
,
728 .access
= NULL
, /* access */
729 .readlink
= nfs_proc_readlink
,
730 .create
= nfs_proc_create
,
731 .remove
= nfs_proc_remove
,
732 .unlink_setup
= nfs_proc_unlink_setup
,
733 .unlink_rpc_prepare
= nfs_proc_unlink_rpc_prepare
,
734 .unlink_done
= nfs_proc_unlink_done
,
735 .rename_setup
= nfs_proc_rename_setup
,
736 .rename_rpc_prepare
= nfs_proc_rename_rpc_prepare
,
737 .rename_done
= nfs_proc_rename_done
,
738 .link
= nfs_proc_link
,
739 .symlink
= nfs_proc_symlink
,
740 .mkdir
= nfs_proc_mkdir
,
741 .rmdir
= nfs_proc_rmdir
,
742 .readdir
= nfs_proc_readdir
,
743 .mknod
= nfs_proc_mknod
,
744 .statfs
= nfs_proc_statfs
,
745 .fsinfo
= nfs_proc_fsinfo
,
746 .pathconf
= nfs_proc_pathconf
,
747 .decode_dirent
= nfs2_decode_dirent
,
748 .pgio_rpc_prepare
= nfs_proc_pgio_rpc_prepare
,
749 .read_setup
= nfs_proc_read_setup
,
750 .read_done
= nfs_read_done
,
751 .write_setup
= nfs_proc_write_setup
,
752 .write_done
= nfs_write_done
,
753 .commit_setup
= nfs_proc_commit_setup
,
754 .commit_rpc_prepare
= nfs_proc_commit_rpc_prepare
,
755 .lock
= nfs_proc_lock
,
756 .lock_check_bounds
= nfs_lock_check_bounds
,
757 .close_context
= nfs_close_context
,
758 .have_delegation
= nfs_have_delegation
,
759 .alloc_client
= nfs_alloc_client
,
760 .init_client
= nfs_init_client
,
761 .free_client
= nfs_free_client
,
762 .create_server
= nfs_create_server
,
763 .clone_server
= nfs_clone_server
,