Commit | Line | Data |
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85e174ba RL |
1 | /* |
2 | * pNFS client data structures. | |
3 | * | |
4 | * Copyright (c) 2002 | |
5 | * The Regents of the University of Michigan | |
6 | * All Rights Reserved | |
7 | * | |
8 | * Dean Hildebrand <dhildebz@umich.edu> | |
9 | * | |
10 | * Permission is granted to use, copy, create derivative works, and | |
11 | * redistribute this software and such derivative works for any purpose, | |
12 | * so long as the name of the University of Michigan is not used in | |
13 | * any advertising or publicity pertaining to the use or distribution | |
14 | * of this software without specific, written prior authorization. If | |
15 | * the above copyright notice or any other identification of the | |
16 | * University of Michigan is included in any copy of any portion of | |
17 | * this software, then the disclaimer below must also be included. | |
18 | * | |
19 | * This software is provided as is, without representation or warranty | |
20 | * of any kind either express or implied, including without limitation | |
21 | * the implied warranties of merchantability, fitness for a particular | |
22 | * purpose, or noninfringement. The Regents of the University of | |
23 | * Michigan shall not be liable for any damages, including special, | |
24 | * indirect, incidental, or consequential damages, with respect to any | |
25 | * claim arising out of or in connection with the use of the software, | |
26 | * even if it has been or is hereafter advised of the possibility of | |
27 | * such damages. | |
28 | */ | |
29 | ||
30 | #ifndef FS_NFS_PNFS_H | |
31 | #define FS_NFS_PNFS_H | |
32 | ||
45df3c8b | 33 | #include <linux/nfs_fs.h> |
94ad1c80 FI |
34 | #include <linux/nfs_page.h> |
35 | ||
4541d16c FI |
36 | enum { |
37 | NFS_LSEG_VALID = 0, /* cleared when lseg is recalled/returned */ | |
f7e8917a | 38 | NFS_LSEG_ROC, /* roc bit received from server */ |
a9bae566 | 39 | NFS_LSEG_LAYOUTCOMMIT, /* layoutcommit bit set for layoutcommit */ |
4541d16c FI |
40 | }; |
41 | ||
974cec8c | 42 | struct pnfs_layout_segment { |
566052c5 | 43 | struct list_head pls_list; |
a9bae566 | 44 | struct list_head pls_lc_list; |
566052c5 | 45 | struct pnfs_layout_range pls_range; |
4541d16c FI |
46 | atomic_t pls_refcount; |
47 | unsigned long pls_flags; | |
566052c5 | 48 | struct pnfs_layout_hdr *pls_layout; |
974cec8c AA |
49 | }; |
50 | ||
64419a9b AA |
51 | enum pnfs_try_status { |
52 | PNFS_ATTEMPTED = 0, | |
53 | PNFS_NOT_ATTEMPTED = 1, | |
54 | }; | |
55 | ||
85e174ba RL |
56 | #ifdef CONFIG_NFS_V4_1 |
57 | ||
58 | #define LAYOUT_NFSV4_1_MODULE_PREFIX "nfs-layouttype4" | |
59 | ||
e5e94017 BH |
60 | enum { |
61 | NFS_LAYOUT_RO_FAILED = 0, /* get ro layout failed stop trying */ | |
62 | NFS_LAYOUT_RW_FAILED, /* get rw layout failed stop trying */ | |
43f1b3da | 63 | NFS_LAYOUT_BULK_RECALL, /* bulk recall affecting layout */ |
f7e8917a | 64 | NFS_LAYOUT_ROC, /* some lseg had roc bit set */ |
4541d16c | 65 | NFS_LAYOUT_DESTROYED, /* no new use of layout allowed */ |
041245c8 | 66 | NFS_LAYOUT_INVALID, /* layout is being destroyed */ |
e5e94017 BH |
67 | }; |
68 | ||
8a1636c4 BH |
69 | enum layoutdriver_policy_flags { |
70 | /* Should the pNFS client commit and return the layout upon a setattr */ | |
71 | PNFS_LAYOUTRET_ON_SETATTR = 1 << 0, | |
fe0fe835 | 72 | PNFS_LAYOUTRET_ON_ERROR = 1 << 1, |
8a1636c4 BH |
73 | }; |
74 | ||
1775bc34 BH |
75 | struct nfs4_deviceid_node; |
76 | ||
85e174ba RL |
77 | /* Per-layout driver specific registration structure */ |
78 | struct pnfs_layoutdriver_type { | |
02c35fca FI |
79 | struct list_head pnfs_tblid; |
80 | const u32 id; | |
81 | const char *name; | |
82 | struct module *owner; | |
8a1636c4 | 83 | unsigned flags; |
636fb9c8 | 84 | |
738fd0f3 BH |
85 | int (*set_layoutdriver) (struct nfs_server *, const struct nfs_fh *); |
86 | int (*clear_layoutdriver) (struct nfs_server *); | |
87 | ||
636fb9c8 BH |
88 | struct pnfs_layout_hdr * (*alloc_layout_hdr) (struct inode *inode, gfp_t gfp_flags); |
89 | void (*free_layout_hdr) (struct pnfs_layout_hdr *); | |
90 | ||
a75b9df9 | 91 | struct pnfs_layout_segment * (*alloc_lseg) (struct pnfs_layout_hdr *layoutid, struct nfs4_layoutget_res *lgr, gfp_t gfp_flags); |
b1f69b75 | 92 | void (*free_lseg) (struct pnfs_layout_segment *lseg); |
94ad1c80 FI |
93 | |
94 | /* test for nfs page cache coalescing */ | |
1751c363 TM |
95 | const struct nfs_pageio_ops *pg_read_ops; |
96 | const struct nfs_pageio_ops *pg_write_ops; | |
64419a9b | 97 | |
ea2cf228 | 98 | struct pnfs_ds_commit_info *(*get_ds_info) (struct inode *inode); |
8dd37758 | 99 | void (*mark_request_commit) (struct nfs_page *req, |
ea2cf228 FI |
100 | struct pnfs_layout_segment *lseg, |
101 | struct nfs_commit_info *cinfo); | |
102 | void (*clear_request_commit) (struct nfs_page *req, | |
103 | struct nfs_commit_info *cinfo); | |
104 | int (*scan_commit_lists) (struct nfs_commit_info *cinfo, | |
105 | int max); | |
1763da12 FI |
106 | void (*recover_commit_reqs) (struct list_head *list, |
107 | struct nfs_commit_info *cinfo); | |
ea2cf228 FI |
108 | int (*commit_pagelist)(struct inode *inode, |
109 | struct list_head *mds_pages, | |
110 | int how, | |
111 | struct nfs_commit_info *cinfo); | |
a861a1e1 | 112 | |
64419a9b AA |
113 | /* |
114 | * Return PNFS_ATTEMPTED to indicate the layout code has attempted | |
115 | * I/O, else return PNFS_NOT_ATTEMPTED to fall back to normal NFS | |
116 | */ | |
117 | enum pnfs_try_status (*read_pagelist) (struct nfs_read_data *nfs_data); | |
0382b744 | 118 | enum pnfs_try_status (*write_pagelist) (struct nfs_write_data *nfs_data, int how); |
1775bc34 BH |
119 | |
120 | void (*free_deviceid_node) (struct nfs4_deviceid_node *); | |
04a55549 AA |
121 | |
122 | void (*encode_layoutreturn) (struct pnfs_layout_hdr *layoutid, | |
123 | struct xdr_stream *xdr, | |
124 | const struct nfs4_layoutreturn_args *args); | |
ac7db726 | 125 | |
db29c089 AA |
126 | void (*cleanup_layoutcommit) (struct nfs4_layoutcommit_data *data); |
127 | ||
ac7db726 BH |
128 | void (*encode_layoutcommit) (struct pnfs_layout_hdr *layoutid, |
129 | struct xdr_stream *xdr, | |
130 | const struct nfs4_layoutcommit_args *args); | |
85e174ba RL |
131 | }; |
132 | ||
e5e94017 | 133 | struct pnfs_layout_hdr { |
cc6e5340 | 134 | atomic_t plh_refcount; |
b7edfaa1 | 135 | struct list_head plh_layouts; /* other client layouts */ |
43f1b3da | 136 | struct list_head plh_bulk_recall; /* clnt list of bulk recalls */ |
b7edfaa1 | 137 | struct list_head plh_segs; /* layout segments list */ |
b7edfaa1 | 138 | nfs4_stateid plh_stateid; |
cf7d63f1 | 139 | atomic_t plh_outstanding; /* number of RPCs out */ |
f7e8917a | 140 | unsigned long plh_block_lgets; /* block LAYOUTGET if >0 */ |
43f1b3da | 141 | u32 plh_barrier; /* ignore lower seqids */ |
566052c5 | 142 | unsigned long plh_flags; |
acff5880 | 143 | loff_t plh_lwb; /* last write byte for layoutcommit */ |
9fa40758 | 144 | struct rpc_cred *plh_lc_cred; /* layoutcommit cred */ |
b7edfaa1 | 145 | struct inode *plh_inode; |
e5e94017 BH |
146 | }; |
147 | ||
b1f69b75 AA |
148 | struct pnfs_device { |
149 | struct nfs4_deviceid dev_id; | |
150 | unsigned int layout_type; | |
151 | unsigned int mincount; | |
152 | struct page **pages; | |
b1f69b75 AA |
153 | unsigned int pgbase; |
154 | unsigned int pglen; | |
155 | }; | |
156 | ||
7f11d8d3 AA |
157 | #define NFS4_PNFS_GETDEVLIST_MAXNUM 16 |
158 | ||
159 | struct pnfs_devicelist { | |
160 | unsigned int eof; | |
161 | unsigned int num_devs; | |
162 | struct nfs4_deviceid dev_id[NFS4_PNFS_GETDEVLIST_MAXNUM]; | |
163 | }; | |
164 | ||
02c35fca FI |
165 | extern int pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *); |
166 | extern void pnfs_unregister_layoutdriver(struct pnfs_layoutdriver_type *); | |
167 | ||
b1f69b75 | 168 | /* nfs4proc.c */ |
7f11d8d3 AA |
169 | extern int nfs4_proc_getdevicelist(struct nfs_server *server, |
170 | const struct nfs_fh *fh, | |
171 | struct pnfs_devicelist *devlist); | |
b1f69b75 AA |
172 | extern int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
173 | struct pnfs_device *dev); | |
174 | extern int nfs4_proc_layoutget(struct nfs4_layoutget *lgp); | |
cbe82603 | 175 | extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp); |
b1f69b75 AA |
176 | |
177 | /* pnfs.c */ | |
43f1b3da | 178 | void get_layout_hdr(struct pnfs_layout_hdr *lo); |
bae724ef | 179 | void put_lseg(struct pnfs_layout_segment *lseg); |
1751c363 | 180 | |
061ae2ed FI |
181 | bool pnfs_pageio_init_read(struct nfs_pageio_descriptor *, struct inode *, |
182 | const struct nfs_pgio_completion_ops *); | |
183 | bool pnfs_pageio_init_write(struct nfs_pageio_descriptor *, struct inode *, | |
184 | int, const struct nfs_pgio_completion_ops *); | |
1751c363 | 185 | |
738fd0f3 | 186 | void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, u32); |
85e174ba | 187 | void unset_pnfs_layoutdriver(struct nfs_server *); |
d8007d4d | 188 | void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *, struct nfs_page *); |
493292dd | 189 | int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc); |
d8007d4d | 190 | void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *, struct nfs_page *); |
dce81290 | 191 | int pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc); |
18ad0a9f | 192 | bool pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, struct nfs_page *req); |
1b0ae068 | 193 | void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg); |
b1f69b75 | 194 | int pnfs_layout_process(struct nfs4_layoutget *lgp); |
43f1b3da | 195 | void pnfs_free_lseg_list(struct list_head *tmp_list); |
e5e94017 | 196 | void pnfs_destroy_layout(struct nfs_inode *); |
974cec8c | 197 | void pnfs_destroy_all_layouts(struct nfs_client *); |
cc6e5340 | 198 | void put_layout_hdr(struct pnfs_layout_hdr *lo); |
43f1b3da FI |
199 | void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, |
200 | const nfs4_stateid *new, | |
201 | bool update_barrier); | |
fd6002e9 FI |
202 | int pnfs_choose_layoutget_stateid(nfs4_stateid *dst, |
203 | struct pnfs_layout_hdr *lo, | |
204 | struct nfs4_state *open_state); | |
43f1b3da FI |
205 | int mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo, |
206 | struct list_head *tmp_list, | |
778b5502 | 207 | struct pnfs_layout_range *recall_range); |
f7e8917a FI |
208 | bool pnfs_roc(struct inode *ino); |
209 | void pnfs_roc_release(struct inode *ino); | |
210 | void pnfs_roc_set_barrier(struct inode *ino, u32 barrier); | |
211 | bool pnfs_roc_drain(struct inode *ino, u32 *barrier); | |
863a3c6c | 212 | void pnfs_set_layoutcommit(struct nfs_write_data *wdata); |
db29c089 | 213 | void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data); |
ef311537 | 214 | int pnfs_layoutcommit_inode(struct inode *inode, bool sync); |
cbe82603 | 215 | int _pnfs_return_layout(struct inode *); |
8ce160c5 | 216 | void pnfs_ld_write_done(struct nfs_write_data *); |
9b7eecdc | 217 | void pnfs_ld_read_done(struct nfs_read_data *); |
7c24d948 AA |
218 | struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino, |
219 | struct nfs_open_context *ctx, | |
220 | loff_t pos, | |
221 | u64 count, | |
222 | enum pnfs_iomode iomode, | |
223 | gfp_t gfp_flags); | |
e5e94017 | 224 | |
c47abcf8 | 225 | void nfs4_deviceid_mark_client_invalid(struct nfs_client *clp); |
e7dd79af AA |
226 | int pnfs_read_done_resend_to_mds(struct inode *inode, struct list_head *head, |
227 | const struct nfs_pgio_completion_ops *compl_ops); | |
228 | int pnfs_write_done_resend_to_mds(struct inode *inode, struct list_head *head, | |
229 | const struct nfs_pgio_completion_ops *compl_ops); | |
82be417a | 230 | struct nfs4_threshold *pnfs_mdsthreshold_alloc(void); |
c47abcf8 AA |
231 | |
232 | /* nfs4_deviceid_flags */ | |
233 | enum { | |
234 | NFS_DEVICEID_INVALID = 0, /* set when MDS clientid recalled */ | |
235 | }; | |
236 | ||
a1eaecbc BH |
237 | /* pnfs_dev.c */ |
238 | struct nfs4_deviceid_node { | |
239 | struct hlist_node node; | |
9e3bd4e2 | 240 | struct hlist_node tmpnode; |
1775bc34 | 241 | const struct pnfs_layoutdriver_type *ld; |
a1eaecbc | 242 | const struct nfs_client *nfs_client; |
c47abcf8 | 243 | unsigned long flags; |
a1eaecbc BH |
244 | struct nfs4_deviceid deviceid; |
245 | atomic_t ref; | |
246 | }; | |
247 | ||
35c8bb54 | 248 | struct nfs4_deviceid_node *nfs4_find_get_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *); |
35c8bb54 | 249 | void nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *); |
a1eaecbc | 250 | void nfs4_init_deviceid_node(struct nfs4_deviceid_node *, |
1775bc34 | 251 | const struct pnfs_layoutdriver_type *, |
a1eaecbc BH |
252 | const struct nfs_client *, |
253 | const struct nfs4_deviceid *); | |
254 | struct nfs4_deviceid_node *nfs4_insert_deviceid_node(struct nfs4_deviceid_node *); | |
255 | bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *); | |
1775bc34 | 256 | void nfs4_deviceid_purge_client(const struct nfs_client *); |
a1eaecbc | 257 | |
e5e94017 BH |
258 | static inline int lo_fail_bit(u32 iomode) |
259 | { | |
260 | return iomode == IOMODE_RW ? | |
261 | NFS_LAYOUT_RW_FAILED : NFS_LAYOUT_RO_FAILED; | |
262 | } | |
263 | ||
d684d2ae FI |
264 | static inline struct pnfs_layout_segment * |
265 | get_lseg(struct pnfs_layout_segment *lseg) | |
266 | { | |
267 | if (lseg) { | |
268 | atomic_inc(&lseg->pls_refcount); | |
269 | smp_mb__after_atomic_inc(); | |
270 | } | |
271 | return lseg; | |
272 | } | |
273 | ||
e5e94017 BH |
274 | /* Return true if a layout driver is being used for this mountpoint */ |
275 | static inline int pnfs_enabled_sb(struct nfs_server *nfss) | |
276 | { | |
277 | return nfss->pnfs_curr_ld != NULL; | |
278 | } | |
85e174ba | 279 | |
a861a1e1 | 280 | static inline int |
ea2cf228 FI |
281 | pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, |
282 | struct nfs_commit_info *cinfo) | |
a861a1e1 | 283 | { |
ea2cf228 | 284 | if (cinfo->ds == NULL || cinfo->ds->ncommitting == 0) |
a861a1e1 | 285 | return PNFS_NOT_ATTEMPTED; |
ea2cf228 FI |
286 | return NFS_SERVER(inode)->pnfs_curr_ld->commit_pagelist(inode, mds_pages, how, cinfo); |
287 | } | |
288 | ||
289 | static inline struct pnfs_ds_commit_info * | |
290 | pnfs_get_ds_info(struct inode *inode) | |
291 | { | |
292 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; | |
293 | ||
294 | if (ld == NULL || ld->get_ds_info == NULL) | |
295 | return NULL; | |
296 | return ld->get_ds_info(inode); | |
a861a1e1 FI |
297 | } |
298 | ||
8dd37758 | 299 | static inline bool |
ea2cf228 FI |
300 | pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, |
301 | struct nfs_commit_info *cinfo) | |
a861a1e1 | 302 | { |
d6d6dc7c | 303 | struct inode *inode = req->wb_context->dentry->d_inode; |
8dd37758 | 304 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; |
a861a1e1 | 305 | |
8dd37758 TM |
306 | if (lseg == NULL || ld->mark_request_commit == NULL) |
307 | return false; | |
ea2cf228 | 308 | ld->mark_request_commit(req, lseg, cinfo); |
8dd37758 | 309 | return true; |
a861a1e1 FI |
310 | } |
311 | ||
8dd37758 | 312 | static inline bool |
ea2cf228 | 313 | pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) |
a861a1e1 | 314 | { |
d6d6dc7c | 315 | struct inode *inode = req->wb_context->dentry->d_inode; |
8dd37758 | 316 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; |
d6d6dc7c | 317 | |
8dd37758 TM |
318 | if (ld == NULL || ld->clear_request_commit == NULL) |
319 | return false; | |
ea2cf228 | 320 | ld->clear_request_commit(req, cinfo); |
8dd37758 | 321 | return true; |
d6d6dc7c FI |
322 | } |
323 | ||
324 | static inline int | |
ea2cf228 FI |
325 | pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, |
326 | int max) | |
d6d6dc7c | 327 | { |
ea2cf228 | 328 | if (cinfo->ds == NULL || cinfo->ds->nwritten == 0) |
d6d6dc7c | 329 | return 0; |
ea2cf228 FI |
330 | else |
331 | return NFS_SERVER(inode)->pnfs_curr_ld->scan_commit_lists(cinfo, max); | |
a861a1e1 FI |
332 | } |
333 | ||
1763da12 FI |
334 | static inline void |
335 | pnfs_recover_commit_reqs(struct inode *inode, struct list_head *list, | |
336 | struct nfs_commit_info *cinfo) | |
337 | { | |
338 | if (cinfo->ds == NULL || cinfo->ds->nwritten == 0) | |
339 | return; | |
340 | NFS_SERVER(inode)->pnfs_curr_ld->recover_commit_reqs(list, cinfo); | |
341 | } | |
342 | ||
8a1636c4 BH |
343 | /* Should the pNFS client commit and return the layout upon a setattr */ |
344 | static inline bool | |
345 | pnfs_ld_layoutret_on_setattr(struct inode *inode) | |
346 | { | |
347 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) | |
348 | return false; | |
349 | return NFS_SERVER(inode)->pnfs_curr_ld->flags & | |
350 | PNFS_LAYOUTRET_ON_SETATTR; | |
351 | } | |
352 | ||
cbe82603 BH |
353 | static inline int pnfs_return_layout(struct inode *ino) |
354 | { | |
355 | struct nfs_inode *nfsi = NFS_I(ino); | |
356 | struct nfs_server *nfss = NFS_SERVER(ino); | |
357 | ||
358 | if (pnfs_enabled_sb(nfss) && nfsi->layout) | |
359 | return _pnfs_return_layout(ino); | |
360 | ||
361 | return 0; | |
362 | } | |
363 | ||
82be417a AA |
364 | static inline bool |
365 | pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, | |
366 | struct nfs_server *nfss) | |
367 | { | |
fb47ddc9 | 368 | return (dst && src && src->bm != 0 && nfss->pnfs_curr_ld && |
82be417a AA |
369 | nfss->pnfs_curr_ld->id == src->l_type); |
370 | } | |
371 | ||
6f00866d TM |
372 | #ifdef NFS_DEBUG |
373 | void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id); | |
374 | #else | |
375 | static inline void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id) | |
376 | { | |
377 | } | |
378 | #endif /* NFS_DEBUG */ | |
85e174ba RL |
379 | #else /* CONFIG_NFS_V4_1 */ |
380 | ||
974cec8c AA |
381 | static inline void pnfs_destroy_all_layouts(struct nfs_client *clp) |
382 | { | |
383 | } | |
384 | ||
e5e94017 BH |
385 | static inline void pnfs_destroy_layout(struct nfs_inode *nfsi) |
386 | { | |
387 | } | |
388 | ||
d684d2ae FI |
389 | static inline struct pnfs_layout_segment * |
390 | get_lseg(struct pnfs_layout_segment *lseg) | |
391 | { | |
392 | return NULL; | |
393 | } | |
394 | ||
395 | static inline void put_lseg(struct pnfs_layout_segment *lseg) | |
396 | { | |
397 | } | |
398 | ||
cbe82603 BH |
399 | static inline int pnfs_return_layout(struct inode *ino) |
400 | { | |
401 | return 0; | |
402 | } | |
403 | ||
8a1636c4 BH |
404 | static inline bool |
405 | pnfs_ld_layoutret_on_setattr(struct inode *inode) | |
406 | { | |
407 | return false; | |
408 | } | |
409 | ||
f7e8917a FI |
410 | static inline bool |
411 | pnfs_roc(struct inode *ino) | |
412 | { | |
413 | return false; | |
414 | } | |
415 | ||
416 | static inline void | |
417 | pnfs_roc_release(struct inode *ino) | |
418 | { | |
419 | } | |
420 | ||
421 | static inline void | |
422 | pnfs_roc_set_barrier(struct inode *ino, u32 barrier) | |
423 | { | |
424 | } | |
425 | ||
426 | static inline bool | |
427 | pnfs_roc_drain(struct inode *ino, u32 *barrier) | |
428 | { | |
429 | return false; | |
430 | } | |
431 | ||
738fd0f3 | 432 | static inline void set_pnfs_layoutdriver(struct nfs_server *s, |
a00ed25c | 433 | const struct nfs_fh *mntfh, u32 id) |
85e174ba RL |
434 | { |
435 | } | |
436 | ||
437 | static inline void unset_pnfs_layoutdriver(struct nfs_server *s) | |
438 | { | |
439 | } | |
440 | ||
b58fee21 BS |
441 | static inline bool pnfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, struct inode *inode, |
442 | const struct nfs_pgio_completion_ops *compl_ops) | |
44b83799 | 443 | { |
1751c363 TM |
444 | return false; |
445 | } | |
446 | ||
b58fee21 BS |
447 | static inline bool pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode, int ioflags, |
448 | const struct nfs_pgio_completion_ops *compl_ops) | |
1751c363 TM |
449 | { |
450 | return false; | |
44b83799 FI |
451 | } |
452 | ||
a861a1e1 | 453 | static inline int |
ea2cf228 FI |
454 | pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, |
455 | struct nfs_commit_info *cinfo) | |
a861a1e1 FI |
456 | { |
457 | return PNFS_NOT_ATTEMPTED; | |
458 | } | |
459 | ||
ea2cf228 FI |
460 | static inline struct pnfs_ds_commit_info * |
461 | pnfs_get_ds_info(struct inode *inode) | |
462 | { | |
463 | return NULL; | |
464 | } | |
465 | ||
8dd37758 | 466 | static inline bool |
ea2cf228 FI |
467 | pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, |
468 | struct nfs_commit_info *cinfo) | |
a861a1e1 | 469 | { |
8dd37758 | 470 | return false; |
a861a1e1 FI |
471 | } |
472 | ||
8dd37758 | 473 | static inline bool |
ea2cf228 | 474 | pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) |
a861a1e1 | 475 | { |
8dd37758 | 476 | return false; |
d6d6dc7c FI |
477 | } |
478 | ||
479 | static inline int | |
ea2cf228 FI |
480 | pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, |
481 | int max) | |
d6d6dc7c FI |
482 | { |
483 | return 0; | |
a861a1e1 FI |
484 | } |
485 | ||
1763da12 FI |
486 | static inline void |
487 | pnfs_recover_commit_reqs(struct inode *inode, struct list_head *list, | |
488 | struct nfs_commit_info *cinfo) | |
489 | { | |
490 | } | |
491 | ||
ef311537 | 492 | static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync) |
863a3c6c AA |
493 | { |
494 | return 0; | |
495 | } | |
1775bc34 | 496 | |
82be417a AA |
497 | static inline bool |
498 | pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, | |
499 | struct nfs_server *nfss) | |
500 | { | |
501 | return false; | |
502 | } | |
503 | ||
504 | static inline struct nfs4_threshold *pnfs_mdsthreshold_alloc(void) | |
505 | { | |
506 | return NULL; | |
507 | } | |
508 | ||
85e174ba RL |
509 | #endif /* CONFIG_NFS_V4_1 */ |
510 | ||
511 | #endif /* FS_NFS_PNFS_H */ |