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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 */ |
366d5052 | 67 | NFS_LAYOUT_RETURNED, /* layout has already been returned */ |
e5e94017 BH |
68 | }; |
69 | ||
8a1636c4 BH |
70 | enum layoutdriver_policy_flags { |
71 | /* Should the pNFS client commit and return the layout upon a setattr */ | |
72 | PNFS_LAYOUTRET_ON_SETATTR = 1 << 0, | |
fe0fe835 | 73 | PNFS_LAYOUTRET_ON_ERROR = 1 << 1, |
8a1636c4 BH |
74 | }; |
75 | ||
1775bc34 BH |
76 | struct nfs4_deviceid_node; |
77 | ||
85e174ba RL |
78 | /* Per-layout driver specific registration structure */ |
79 | struct pnfs_layoutdriver_type { | |
02c35fca FI |
80 | struct list_head pnfs_tblid; |
81 | const u32 id; | |
82 | const char *name; | |
83 | struct module *owner; | |
8a1636c4 | 84 | unsigned flags; |
636fb9c8 | 85 | |
738fd0f3 BH |
86 | int (*set_layoutdriver) (struct nfs_server *, const struct nfs_fh *); |
87 | int (*clear_layoutdriver) (struct nfs_server *); | |
88 | ||
636fb9c8 BH |
89 | struct pnfs_layout_hdr * (*alloc_layout_hdr) (struct inode *inode, gfp_t gfp_flags); |
90 | void (*free_layout_hdr) (struct pnfs_layout_hdr *); | |
91 | ||
a75b9df9 | 92 | struct pnfs_layout_segment * (*alloc_lseg) (struct pnfs_layout_hdr *layoutid, struct nfs4_layoutget_res *lgr, gfp_t gfp_flags); |
b1f69b75 | 93 | void (*free_lseg) (struct pnfs_layout_segment *lseg); |
94ad1c80 FI |
94 | |
95 | /* test for nfs page cache coalescing */ | |
1751c363 TM |
96 | const struct nfs_pageio_ops *pg_read_ops; |
97 | const struct nfs_pageio_ops *pg_write_ops; | |
64419a9b | 98 | |
ea2cf228 | 99 | struct pnfs_ds_commit_info *(*get_ds_info) (struct inode *inode); |
8dd37758 | 100 | void (*mark_request_commit) (struct nfs_page *req, |
ea2cf228 FI |
101 | struct pnfs_layout_segment *lseg, |
102 | struct nfs_commit_info *cinfo); | |
103 | void (*clear_request_commit) (struct nfs_page *req, | |
104 | struct nfs_commit_info *cinfo); | |
105 | int (*scan_commit_lists) (struct nfs_commit_info *cinfo, | |
106 | int max); | |
1763da12 FI |
107 | void (*recover_commit_reqs) (struct list_head *list, |
108 | struct nfs_commit_info *cinfo); | |
ea2cf228 FI |
109 | int (*commit_pagelist)(struct inode *inode, |
110 | struct list_head *mds_pages, | |
111 | int how, | |
112 | struct nfs_commit_info *cinfo); | |
a861a1e1 | 113 | |
64419a9b AA |
114 | /* |
115 | * Return PNFS_ATTEMPTED to indicate the layout code has attempted | |
116 | * I/O, else return PNFS_NOT_ATTEMPTED to fall back to normal NFS | |
117 | */ | |
118 | enum pnfs_try_status (*read_pagelist) (struct nfs_read_data *nfs_data); | |
0382b744 | 119 | enum pnfs_try_status (*write_pagelist) (struct nfs_write_data *nfs_data, int how); |
1775bc34 BH |
120 | |
121 | void (*free_deviceid_node) (struct nfs4_deviceid_node *); | |
04a55549 AA |
122 | |
123 | void (*encode_layoutreturn) (struct pnfs_layout_hdr *layoutid, | |
124 | struct xdr_stream *xdr, | |
125 | const struct nfs4_layoutreturn_args *args); | |
ac7db726 | 126 | |
db29c089 AA |
127 | void (*cleanup_layoutcommit) (struct nfs4_layoutcommit_data *data); |
128 | ||
ac7db726 BH |
129 | void (*encode_layoutcommit) (struct pnfs_layout_hdr *layoutid, |
130 | struct xdr_stream *xdr, | |
131 | const struct nfs4_layoutcommit_args *args); | |
85e174ba RL |
132 | }; |
133 | ||
e5e94017 | 134 | struct pnfs_layout_hdr { |
cc6e5340 | 135 | atomic_t plh_refcount; |
b7edfaa1 | 136 | struct list_head plh_layouts; /* other client layouts */ |
43f1b3da | 137 | struct list_head plh_bulk_recall; /* clnt list of bulk recalls */ |
b7edfaa1 | 138 | struct list_head plh_segs; /* layout segments list */ |
b7edfaa1 | 139 | nfs4_stateid plh_stateid; |
cf7d63f1 | 140 | atomic_t plh_outstanding; /* number of RPCs out */ |
f7e8917a | 141 | unsigned long plh_block_lgets; /* block LAYOUTGET if >0 */ |
43f1b3da | 142 | u32 plh_barrier; /* ignore lower seqids */ |
25c75333 | 143 | unsigned long plh_retry_timestamp; |
566052c5 | 144 | unsigned long plh_flags; |
acff5880 | 145 | loff_t plh_lwb; /* last write byte for layoutcommit */ |
9fa40758 | 146 | struct rpc_cred *plh_lc_cred; /* layoutcommit cred */ |
b7edfaa1 | 147 | struct inode *plh_inode; |
e5e94017 BH |
148 | }; |
149 | ||
b1f69b75 AA |
150 | struct pnfs_device { |
151 | struct nfs4_deviceid dev_id; | |
152 | unsigned int layout_type; | |
153 | unsigned int mincount; | |
154 | struct page **pages; | |
b1f69b75 AA |
155 | unsigned int pgbase; |
156 | unsigned int pglen; | |
157 | }; | |
158 | ||
7f11d8d3 AA |
159 | #define NFS4_PNFS_GETDEVLIST_MAXNUM 16 |
160 | ||
161 | struct pnfs_devicelist { | |
162 | unsigned int eof; | |
163 | unsigned int num_devs; | |
164 | struct nfs4_deviceid dev_id[NFS4_PNFS_GETDEVLIST_MAXNUM]; | |
165 | }; | |
166 | ||
02c35fca FI |
167 | extern int pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *); |
168 | extern void pnfs_unregister_layoutdriver(struct pnfs_layoutdriver_type *); | |
169 | ||
b1f69b75 | 170 | /* nfs4proc.c */ |
7f11d8d3 AA |
171 | extern int nfs4_proc_getdevicelist(struct nfs_server *server, |
172 | const struct nfs_fh *fh, | |
173 | struct pnfs_devicelist *devlist); | |
b1f69b75 AA |
174 | extern int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
175 | struct pnfs_device *dev); | |
a0b0a6e3 | 176 | extern struct pnfs_layout_segment* nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags); |
cbe82603 | 177 | extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp); |
b1f69b75 AA |
178 | |
179 | /* pnfs.c */ | |
70c3bd2b | 180 | void pnfs_get_layout_hdr(struct pnfs_layout_hdr *lo); |
9369a431 | 181 | void pnfs_put_lseg(struct pnfs_layout_segment *lseg); |
1751c363 | 182 | |
1abb5088 | 183 | void pnfs_pageio_init_read(struct nfs_pageio_descriptor *, struct inode *, |
061ae2ed | 184 | const struct nfs_pgio_completion_ops *); |
57208fa7 | 185 | void pnfs_pageio_init_write(struct nfs_pageio_descriptor *, struct inode *, |
061ae2ed | 186 | int, const struct nfs_pgio_completion_ops *); |
1751c363 | 187 | |
738fd0f3 | 188 | void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, u32); |
85e174ba | 189 | void unset_pnfs_layoutdriver(struct nfs_server *); |
d8007d4d | 190 | void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *, struct nfs_page *); |
493292dd | 191 | int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc); |
d8007d4d | 192 | void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *, struct nfs_page *); |
dce81290 | 193 | int pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc); |
18ad0a9f | 194 | bool pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, struct nfs_page *req); |
1b0ae068 | 195 | void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg); |
a0b0a6e3 | 196 | struct pnfs_layout_segment *pnfs_layout_process(struct nfs4_layoutget *lgp); |
43f1b3da | 197 | void pnfs_free_lseg_list(struct list_head *tmp_list); |
e5e94017 | 198 | void pnfs_destroy_layout(struct nfs_inode *); |
974cec8c | 199 | void pnfs_destroy_all_layouts(struct nfs_client *); |
70c3bd2b | 200 | void pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo); |
43f1b3da FI |
201 | void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, |
202 | const nfs4_stateid *new, | |
203 | bool update_barrier); | |
fd6002e9 FI |
204 | int pnfs_choose_layoutget_stateid(nfs4_stateid *dst, |
205 | struct pnfs_layout_hdr *lo, | |
206 | struct nfs4_state *open_state); | |
49a85061 | 207 | int pnfs_mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo, |
43f1b3da | 208 | struct list_head *tmp_list, |
778b5502 | 209 | struct pnfs_layout_range *recall_range); |
f7e8917a FI |
210 | bool pnfs_roc(struct inode *ino); |
211 | void pnfs_roc_release(struct inode *ino); | |
212 | void pnfs_roc_set_barrier(struct inode *ino, u32 barrier); | |
213 | bool pnfs_roc_drain(struct inode *ino, u32 *barrier); | |
863a3c6c | 214 | void pnfs_set_layoutcommit(struct nfs_write_data *wdata); |
db29c089 | 215 | void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data); |
ef311537 | 216 | int pnfs_layoutcommit_inode(struct inode *inode, bool sync); |
cbe82603 | 217 | int _pnfs_return_layout(struct inode *); |
8ce160c5 | 218 | void pnfs_ld_write_done(struct nfs_write_data *); |
9b7eecdc | 219 | void pnfs_ld_read_done(struct nfs_read_data *); |
7c24d948 AA |
220 | struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino, |
221 | struct nfs_open_context *ctx, | |
222 | loff_t pos, | |
223 | u64 count, | |
224 | enum pnfs_iomode iomode, | |
225 | gfp_t gfp_flags); | |
e5e94017 | 226 | |
c47abcf8 | 227 | void nfs4_deviceid_mark_client_invalid(struct nfs_client *clp); |
e7dd79af AA |
228 | int pnfs_read_done_resend_to_mds(struct inode *inode, struct list_head *head, |
229 | const struct nfs_pgio_completion_ops *compl_ops); | |
230 | int pnfs_write_done_resend_to_mds(struct inode *inode, struct list_head *head, | |
231 | const struct nfs_pgio_completion_ops *compl_ops); | |
82be417a | 232 | struct nfs4_threshold *pnfs_mdsthreshold_alloc(void); |
c47abcf8 AA |
233 | |
234 | /* nfs4_deviceid_flags */ | |
235 | enum { | |
236 | NFS_DEVICEID_INVALID = 0, /* set when MDS clientid recalled */ | |
237 | }; | |
238 | ||
a1eaecbc BH |
239 | /* pnfs_dev.c */ |
240 | struct nfs4_deviceid_node { | |
241 | struct hlist_node node; | |
9e3bd4e2 | 242 | struct hlist_node tmpnode; |
1775bc34 | 243 | const struct pnfs_layoutdriver_type *ld; |
a1eaecbc | 244 | const struct nfs_client *nfs_client; |
c47abcf8 | 245 | unsigned long flags; |
a1eaecbc BH |
246 | struct nfs4_deviceid deviceid; |
247 | atomic_t ref; | |
248 | }; | |
249 | ||
35c8bb54 | 250 | struct nfs4_deviceid_node *nfs4_find_get_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *); |
35c8bb54 | 251 | void nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *); |
a1eaecbc | 252 | void nfs4_init_deviceid_node(struct nfs4_deviceid_node *, |
1775bc34 | 253 | const struct pnfs_layoutdriver_type *, |
a1eaecbc BH |
254 | const struct nfs_client *, |
255 | const struct nfs4_deviceid *); | |
256 | struct nfs4_deviceid_node *nfs4_insert_deviceid_node(struct nfs4_deviceid_node *); | |
257 | bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *); | |
1775bc34 | 258 | void nfs4_deviceid_purge_client(const struct nfs_client *); |
a1eaecbc | 259 | |
366d5052 AA |
260 | static inline void |
261 | pnfs_mark_layout_returned(struct pnfs_layout_hdr *lo) | |
262 | { | |
263 | set_bit(NFS_LAYOUT_RETURNED, &lo->plh_flags); | |
264 | } | |
265 | ||
266 | static inline void | |
267 | pnfs_clear_layout_returned(struct pnfs_layout_hdr *lo) | |
268 | { | |
269 | clear_bit(NFS_LAYOUT_RETURNED, &lo->plh_flags); | |
270 | } | |
271 | ||
272 | static inline bool | |
273 | pnfs_test_layout_returned(struct pnfs_layout_hdr *lo) | |
274 | { | |
275 | return test_bit(NFS_LAYOUT_RETURNED, &lo->plh_flags); | |
276 | } | |
277 | ||
d684d2ae | 278 | static inline struct pnfs_layout_segment * |
9369a431 | 279 | pnfs_get_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
280 | { |
281 | if (lseg) { | |
282 | atomic_inc(&lseg->pls_refcount); | |
283 | smp_mb__after_atomic_inc(); | |
284 | } | |
285 | return lseg; | |
286 | } | |
287 | ||
e5e94017 BH |
288 | /* Return true if a layout driver is being used for this mountpoint */ |
289 | static inline int pnfs_enabled_sb(struct nfs_server *nfss) | |
290 | { | |
291 | return nfss->pnfs_curr_ld != NULL; | |
292 | } | |
85e174ba | 293 | |
a861a1e1 | 294 | static inline int |
ea2cf228 FI |
295 | pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, |
296 | struct nfs_commit_info *cinfo) | |
a861a1e1 | 297 | { |
ea2cf228 | 298 | if (cinfo->ds == NULL || cinfo->ds->ncommitting == 0) |
a861a1e1 | 299 | return PNFS_NOT_ATTEMPTED; |
ea2cf228 FI |
300 | return NFS_SERVER(inode)->pnfs_curr_ld->commit_pagelist(inode, mds_pages, how, cinfo); |
301 | } | |
302 | ||
303 | static inline struct pnfs_ds_commit_info * | |
304 | pnfs_get_ds_info(struct inode *inode) | |
305 | { | |
306 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; | |
307 | ||
308 | if (ld == NULL || ld->get_ds_info == NULL) | |
309 | return NULL; | |
310 | return ld->get_ds_info(inode); | |
a861a1e1 FI |
311 | } |
312 | ||
8dd37758 | 313 | static inline bool |
ea2cf228 FI |
314 | pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, |
315 | struct nfs_commit_info *cinfo) | |
a861a1e1 | 316 | { |
d6d6dc7c | 317 | struct inode *inode = req->wb_context->dentry->d_inode; |
8dd37758 | 318 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; |
a861a1e1 | 319 | |
8dd37758 TM |
320 | if (lseg == NULL || ld->mark_request_commit == NULL) |
321 | return false; | |
ea2cf228 | 322 | ld->mark_request_commit(req, lseg, cinfo); |
8dd37758 | 323 | return true; |
a861a1e1 FI |
324 | } |
325 | ||
8dd37758 | 326 | static inline bool |
ea2cf228 | 327 | pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) |
a861a1e1 | 328 | { |
d6d6dc7c | 329 | struct inode *inode = req->wb_context->dentry->d_inode; |
8dd37758 | 330 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; |
d6d6dc7c | 331 | |
8dd37758 TM |
332 | if (ld == NULL || ld->clear_request_commit == NULL) |
333 | return false; | |
ea2cf228 | 334 | ld->clear_request_commit(req, cinfo); |
8dd37758 | 335 | return true; |
d6d6dc7c FI |
336 | } |
337 | ||
338 | static inline int | |
ea2cf228 FI |
339 | pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, |
340 | int max) | |
d6d6dc7c | 341 | { |
ea2cf228 | 342 | if (cinfo->ds == NULL || cinfo->ds->nwritten == 0) |
d6d6dc7c | 343 | return 0; |
ea2cf228 FI |
344 | else |
345 | return NFS_SERVER(inode)->pnfs_curr_ld->scan_commit_lists(cinfo, max); | |
a861a1e1 FI |
346 | } |
347 | ||
1763da12 FI |
348 | static inline void |
349 | pnfs_recover_commit_reqs(struct inode *inode, struct list_head *list, | |
350 | struct nfs_commit_info *cinfo) | |
351 | { | |
352 | if (cinfo->ds == NULL || cinfo->ds->nwritten == 0) | |
353 | return; | |
354 | NFS_SERVER(inode)->pnfs_curr_ld->recover_commit_reqs(list, cinfo); | |
355 | } | |
356 | ||
8a1636c4 BH |
357 | /* Should the pNFS client commit and return the layout upon a setattr */ |
358 | static inline bool | |
359 | pnfs_ld_layoutret_on_setattr(struct inode *inode) | |
360 | { | |
361 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) | |
362 | return false; | |
363 | return NFS_SERVER(inode)->pnfs_curr_ld->flags & | |
364 | PNFS_LAYOUTRET_ON_SETATTR; | |
365 | } | |
366 | ||
cbe82603 BH |
367 | static inline int pnfs_return_layout(struct inode *ino) |
368 | { | |
369 | struct nfs_inode *nfsi = NFS_I(ino); | |
370 | struct nfs_server *nfss = NFS_SERVER(ino); | |
371 | ||
372 | if (pnfs_enabled_sb(nfss) && nfsi->layout) | |
373 | return _pnfs_return_layout(ino); | |
374 | ||
375 | return 0; | |
376 | } | |
377 | ||
82be417a AA |
378 | static inline bool |
379 | pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, | |
380 | struct nfs_server *nfss) | |
381 | { | |
fb47ddc9 | 382 | return (dst && src && src->bm != 0 && nfss->pnfs_curr_ld && |
82be417a AA |
383 | nfss->pnfs_curr_ld->id == src->l_type); |
384 | } | |
385 | ||
6f00866d TM |
386 | #ifdef NFS_DEBUG |
387 | void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id); | |
388 | #else | |
389 | static inline void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id) | |
390 | { | |
391 | } | |
392 | #endif /* NFS_DEBUG */ | |
85e174ba RL |
393 | #else /* CONFIG_NFS_V4_1 */ |
394 | ||
974cec8c AA |
395 | static inline void pnfs_destroy_all_layouts(struct nfs_client *clp) |
396 | { | |
397 | } | |
398 | ||
e5e94017 BH |
399 | static inline void pnfs_destroy_layout(struct nfs_inode *nfsi) |
400 | { | |
401 | } | |
402 | ||
d684d2ae | 403 | static inline struct pnfs_layout_segment * |
9369a431 | 404 | pnfs_get_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
405 | { |
406 | return NULL; | |
407 | } | |
408 | ||
9369a431 | 409 | static inline void pnfs_put_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
410 | { |
411 | } | |
412 | ||
cbe82603 BH |
413 | static inline int pnfs_return_layout(struct inode *ino) |
414 | { | |
415 | return 0; | |
416 | } | |
417 | ||
8a1636c4 BH |
418 | static inline bool |
419 | pnfs_ld_layoutret_on_setattr(struct inode *inode) | |
420 | { | |
421 | return false; | |
422 | } | |
423 | ||
f7e8917a FI |
424 | static inline bool |
425 | pnfs_roc(struct inode *ino) | |
426 | { | |
427 | return false; | |
428 | } | |
429 | ||
430 | static inline void | |
431 | pnfs_roc_release(struct inode *ino) | |
432 | { | |
433 | } | |
434 | ||
435 | static inline void | |
436 | pnfs_roc_set_barrier(struct inode *ino, u32 barrier) | |
437 | { | |
438 | } | |
439 | ||
440 | static inline bool | |
441 | pnfs_roc_drain(struct inode *ino, u32 *barrier) | |
442 | { | |
443 | return false; | |
444 | } | |
445 | ||
738fd0f3 | 446 | static inline void set_pnfs_layoutdriver(struct nfs_server *s, |
a00ed25c | 447 | const struct nfs_fh *mntfh, u32 id) |
85e174ba RL |
448 | { |
449 | } | |
450 | ||
451 | static inline void unset_pnfs_layoutdriver(struct nfs_server *s) | |
452 | { | |
453 | } | |
454 | ||
1abb5088 | 455 | static inline void pnfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, struct inode *inode, |
b58fee21 | 456 | const struct nfs_pgio_completion_ops *compl_ops) |
44b83799 | 457 | { |
1abb5088 | 458 | nfs_pageio_init_read(pgio, inode, compl_ops); |
1751c363 TM |
459 | } |
460 | ||
57208fa7 | 461 | static inline void pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode, int ioflags, |
b58fee21 | 462 | const struct nfs_pgio_completion_ops *compl_ops) |
1751c363 | 463 | { |
57208fa7 | 464 | nfs_pageio_init_write(pgio, inode, ioflags, compl_ops); |
44b83799 FI |
465 | } |
466 | ||
a861a1e1 | 467 | static inline int |
ea2cf228 FI |
468 | pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, |
469 | struct nfs_commit_info *cinfo) | |
a861a1e1 FI |
470 | { |
471 | return PNFS_NOT_ATTEMPTED; | |
472 | } | |
473 | ||
ea2cf228 FI |
474 | static inline struct pnfs_ds_commit_info * |
475 | pnfs_get_ds_info(struct inode *inode) | |
476 | { | |
477 | return NULL; | |
478 | } | |
479 | ||
8dd37758 | 480 | static inline bool |
ea2cf228 FI |
481 | pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, |
482 | struct nfs_commit_info *cinfo) | |
a861a1e1 | 483 | { |
8dd37758 | 484 | return false; |
a861a1e1 FI |
485 | } |
486 | ||
8dd37758 | 487 | static inline bool |
ea2cf228 | 488 | pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) |
a861a1e1 | 489 | { |
8dd37758 | 490 | return false; |
d6d6dc7c FI |
491 | } |
492 | ||
493 | static inline int | |
ea2cf228 FI |
494 | pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, |
495 | int max) | |
d6d6dc7c FI |
496 | { |
497 | return 0; | |
a861a1e1 FI |
498 | } |
499 | ||
1763da12 FI |
500 | static inline void |
501 | pnfs_recover_commit_reqs(struct inode *inode, struct list_head *list, | |
502 | struct nfs_commit_info *cinfo) | |
503 | { | |
504 | } | |
505 | ||
ef311537 | 506 | static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync) |
863a3c6c AA |
507 | { |
508 | return 0; | |
509 | } | |
1775bc34 | 510 | |
82be417a AA |
511 | static inline bool |
512 | pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, | |
513 | struct nfs_server *nfss) | |
514 | { | |
515 | return false; | |
516 | } | |
517 | ||
518 | static inline struct nfs4_threshold *pnfs_mdsthreshold_alloc(void) | |
519 | { | |
520 | return NULL; | |
521 | } | |
522 | ||
85e174ba RL |
523 | #endif /* CONFIG_NFS_V4_1 */ |
524 | ||
525 | #endif /* FS_NFS_PNFS_H */ |