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 | 34 | #include <linux/nfs_page.h> |
e6cf82d1 | 35 | #include <linux/workqueue.h> |
94ad1c80 | 36 | |
4541d16c FI |
37 | enum { |
38 | NFS_LSEG_VALID = 0, /* cleared when lseg is recalled/returned */ | |
f7e8917a | 39 | NFS_LSEG_ROC, /* roc bit received from server */ |
a9bae566 | 40 | NFS_LSEG_LAYOUTCOMMIT, /* layoutcommit bit set for layoutcommit */ |
4541d16c FI |
41 | }; |
42 | ||
974cec8c | 43 | struct pnfs_layout_segment { |
566052c5 | 44 | struct list_head pls_list; |
a9bae566 | 45 | struct list_head pls_lc_list; |
566052c5 | 46 | struct pnfs_layout_range pls_range; |
4541d16c FI |
47 | atomic_t pls_refcount; |
48 | unsigned long pls_flags; | |
566052c5 | 49 | struct pnfs_layout_hdr *pls_layout; |
e6cf82d1 | 50 | struct work_struct pls_work; |
974cec8c AA |
51 | }; |
52 | ||
64419a9b AA |
53 | enum pnfs_try_status { |
54 | PNFS_ATTEMPTED = 0, | |
55 | PNFS_NOT_ATTEMPTED = 1, | |
56 | }; | |
57 | ||
85e174ba RL |
58 | #ifdef CONFIG_NFS_V4_1 |
59 | ||
60 | #define LAYOUT_NFSV4_1_MODULE_PREFIX "nfs-layouttype4" | |
61 | ||
e5e94017 BH |
62 | enum { |
63 | NFS_LAYOUT_RO_FAILED = 0, /* get ro layout failed stop trying */ | |
64 | NFS_LAYOUT_RW_FAILED, /* get rw layout failed stop trying */ | |
43f1b3da | 65 | NFS_LAYOUT_BULK_RECALL, /* bulk recall affecting layout */ |
f7e8917a | 66 | NFS_LAYOUT_ROC, /* some lseg had roc bit set */ |
d527e5c1 | 67 | NFS_LAYOUT_RETURN, /* Return this layout ASAP */ |
47abadef | 68 | NFS_LAYOUT_INVALID_STID, /* layout stateid id is invalid */ |
e5e94017 BH |
69 | }; |
70 | ||
8a1636c4 BH |
71 | enum layoutdriver_policy_flags { |
72 | /* Should the pNFS client commit and return the layout upon a setattr */ | |
73 | PNFS_LAYOUTRET_ON_SETATTR = 1 << 0, | |
fe0fe835 | 74 | PNFS_LAYOUTRET_ON_ERROR = 1 << 1, |
612aa983 | 75 | PNFS_READ_WHOLE_PAGE = 1 << 2, |
8a1636c4 BH |
76 | }; |
77 | ||
1775bc34 BH |
78 | struct nfs4_deviceid_node; |
79 | ||
85e174ba RL |
80 | /* Per-layout driver specific registration structure */ |
81 | struct pnfs_layoutdriver_type { | |
02c35fca FI |
82 | struct list_head pnfs_tblid; |
83 | const u32 id; | |
84 | const char *name; | |
85 | struct module *owner; | |
8a1636c4 | 86 | unsigned flags; |
661373b1 | 87 | unsigned max_deviceinfo_size; |
636fb9c8 | 88 | |
738fd0f3 BH |
89 | int (*set_layoutdriver) (struct nfs_server *, const struct nfs_fh *); |
90 | int (*clear_layoutdriver) (struct nfs_server *); | |
91 | ||
636fb9c8 BH |
92 | struct pnfs_layout_hdr * (*alloc_layout_hdr) (struct inode *inode, gfp_t gfp_flags); |
93 | void (*free_layout_hdr) (struct pnfs_layout_hdr *); | |
94 | ||
a75b9df9 | 95 | struct pnfs_layout_segment * (*alloc_lseg) (struct pnfs_layout_hdr *layoutid, struct nfs4_layoutget_res *lgr, gfp_t gfp_flags); |
b1f69b75 | 96 | void (*free_lseg) (struct pnfs_layout_segment *lseg); |
94ad1c80 | 97 | |
c88953d8 CH |
98 | void (*return_range) (struct pnfs_layout_hdr *lo, |
99 | struct pnfs_layout_range *range); | |
100 | ||
94ad1c80 | 101 | /* test for nfs page cache coalescing */ |
1751c363 TM |
102 | const struct nfs_pageio_ops *pg_read_ops; |
103 | const struct nfs_pageio_ops *pg_write_ops; | |
64419a9b | 104 | |
ea2cf228 | 105 | struct pnfs_ds_commit_info *(*get_ds_info) (struct inode *inode); |
8dd37758 | 106 | void (*mark_request_commit) (struct nfs_page *req, |
ea2cf228 FI |
107 | struct pnfs_layout_segment *lseg, |
108 | struct nfs_commit_info *cinfo); | |
109 | void (*clear_request_commit) (struct nfs_page *req, | |
110 | struct nfs_commit_info *cinfo); | |
111 | int (*scan_commit_lists) (struct nfs_commit_info *cinfo, | |
112 | int max); | |
1763da12 FI |
113 | void (*recover_commit_reqs) (struct list_head *list, |
114 | struct nfs_commit_info *cinfo); | |
02d1426c WAA |
115 | struct nfs_page * (*search_commit_reqs)(struct nfs_commit_info *cinfo, |
116 | struct page *page); | |
ea2cf228 FI |
117 | int (*commit_pagelist)(struct inode *inode, |
118 | struct list_head *mds_pages, | |
119 | int how, | |
120 | struct nfs_commit_info *cinfo); | |
a861a1e1 | 121 | |
64419a9b AA |
122 | /* |
123 | * Return PNFS_ATTEMPTED to indicate the layout code has attempted | |
124 | * I/O, else return PNFS_NOT_ATTEMPTED to fall back to normal NFS | |
125 | */ | |
d45f60c6 WAA |
126 | enum pnfs_try_status (*read_pagelist)(struct nfs_pgio_header *); |
127 | enum pnfs_try_status (*write_pagelist)(struct nfs_pgio_header *, int); | |
1775bc34 BH |
128 | |
129 | void (*free_deviceid_node) (struct nfs4_deviceid_node *); | |
661373b1 CH |
130 | struct nfs4_deviceid_node * (*alloc_deviceid_node) |
131 | (struct nfs_server *server, struct pnfs_device *pdev, | |
132 | gfp_t gfp_flags); | |
04a55549 AA |
133 | |
134 | void (*encode_layoutreturn) (struct pnfs_layout_hdr *layoutid, | |
135 | struct xdr_stream *xdr, | |
136 | const struct nfs4_layoutreturn_args *args); | |
ac7db726 | 137 | |
db29c089 | 138 | void (*cleanup_layoutcommit) (struct nfs4_layoutcommit_data *data); |
5f919c9f CH |
139 | int (*prepare_layoutcommit) (struct nfs4_layoutcommit_args *args); |
140 | void (*encode_layoutcommit) (struct pnfs_layout_hdr *lo, | |
ac7db726 BH |
141 | struct xdr_stream *xdr, |
142 | const struct nfs4_layoutcommit_args *args); | |
85e174ba RL |
143 | }; |
144 | ||
e5e94017 | 145 | struct pnfs_layout_hdr { |
cc6e5340 | 146 | atomic_t plh_refcount; |
b7edfaa1 | 147 | struct list_head plh_layouts; /* other client layouts */ |
fd9a8d71 | 148 | struct list_head plh_bulk_destroy; |
b7edfaa1 | 149 | struct list_head plh_segs; /* layout segments list */ |
b7edfaa1 | 150 | nfs4_stateid plh_stateid; |
cf7d63f1 | 151 | atomic_t plh_outstanding; /* number of RPCs out */ |
f7e8917a | 152 | unsigned long plh_block_lgets; /* block LAYOUTGET if >0 */ |
43f1b3da | 153 | u32 plh_barrier; /* ignore lower seqids */ |
25c75333 | 154 | unsigned long plh_retry_timestamp; |
566052c5 | 155 | unsigned long plh_flags; |
acff5880 | 156 | loff_t plh_lwb; /* last write byte for layoutcommit */ |
9fa40758 | 157 | struct rpc_cred *plh_lc_cred; /* layoutcommit cred */ |
b7edfaa1 | 158 | struct inode *plh_inode; |
e5e94017 BH |
159 | }; |
160 | ||
b1f69b75 AA |
161 | struct pnfs_device { |
162 | struct nfs4_deviceid dev_id; | |
163 | unsigned int layout_type; | |
164 | unsigned int mincount; | |
f1c097be | 165 | unsigned int maxcount; /* gdia_maxcount */ |
b1f69b75 | 166 | struct page **pages; |
b1f69b75 | 167 | unsigned int pgbase; |
f1c097be | 168 | unsigned int pglen; /* reply buffer length */ |
b1f69b75 AA |
169 | }; |
170 | ||
7f11d8d3 AA |
171 | #define NFS4_PNFS_GETDEVLIST_MAXNUM 16 |
172 | ||
173 | struct pnfs_devicelist { | |
174 | unsigned int eof; | |
175 | unsigned int num_devs; | |
176 | struct nfs4_deviceid dev_id[NFS4_PNFS_GETDEVLIST_MAXNUM]; | |
177 | }; | |
178 | ||
02c35fca FI |
179 | extern int pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *); |
180 | extern void pnfs_unregister_layoutdriver(struct pnfs_layoutdriver_type *); | |
181 | ||
b1f69b75 | 182 | /* nfs4proc.c */ |
7f11d8d3 AA |
183 | extern int nfs4_proc_getdevicelist(struct nfs_server *server, |
184 | const struct nfs_fh *fh, | |
185 | struct pnfs_devicelist *devlist); | |
b1f69b75 | 186 | extern int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
cd5875fe TM |
187 | struct pnfs_device *dev, |
188 | struct rpc_cred *cred); | |
a0b0a6e3 | 189 | extern struct pnfs_layout_segment* nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags); |
cbe82603 | 190 | extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp); |
b1f69b75 AA |
191 | |
192 | /* pnfs.c */ | |
70c3bd2b | 193 | void pnfs_get_layout_hdr(struct pnfs_layout_hdr *lo); |
9369a431 | 194 | void pnfs_put_lseg(struct pnfs_layout_segment *lseg); |
e6cf82d1 | 195 | void pnfs_put_lseg_async(struct pnfs_layout_segment *lseg); |
1751c363 | 196 | |
738fd0f3 | 197 | void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, u32); |
85e174ba | 198 | void unset_pnfs_layoutdriver(struct nfs_server *); |
d8007d4d | 199 | void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *, struct nfs_page *); |
493292dd | 200 | int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc); |
6296556f PT |
201 | void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio, |
202 | struct nfs_page *req, u64 wb_size); | |
dce81290 | 203 | int pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc); |
b4fdac1a WAA |
204 | size_t pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, |
205 | struct nfs_page *prev, struct nfs_page *req); | |
1b0ae068 | 206 | void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg); |
a0b0a6e3 | 207 | struct pnfs_layout_segment *pnfs_layout_process(struct nfs4_layoutget *lgp); |
43f1b3da | 208 | void pnfs_free_lseg_list(struct list_head *tmp_list); |
e5e94017 | 209 | void pnfs_destroy_layout(struct nfs_inode *); |
974cec8c | 210 | void pnfs_destroy_all_layouts(struct nfs_client *); |
fd9a8d71 TM |
211 | int pnfs_destroy_layouts_byfsid(struct nfs_client *clp, |
212 | struct nfs_fsid *fsid, | |
213 | bool is_recall); | |
214 | int pnfs_destroy_layouts_byclid(struct nfs_client *clp, | |
215 | bool is_recall); | |
70c3bd2b | 216 | void pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo); |
43f1b3da FI |
217 | void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, |
218 | const nfs4_stateid *new, | |
219 | bool update_barrier); | |
fd6002e9 FI |
220 | int pnfs_choose_layoutget_stateid(nfs4_stateid *dst, |
221 | struct pnfs_layout_hdr *lo, | |
222 | struct nfs4_state *open_state); | |
49a85061 | 223 | int pnfs_mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo, |
43f1b3da | 224 | struct list_head *tmp_list, |
778b5502 | 225 | struct pnfs_layout_range *recall_range); |
f7e8917a FI |
226 | bool pnfs_roc(struct inode *ino); |
227 | void pnfs_roc_release(struct inode *ino); | |
228 | void pnfs_roc_set_barrier(struct inode *ino, u32 barrier); | |
7fdab069 | 229 | bool pnfs_roc_drain(struct inode *ino, u32 *barrier, struct rpc_task *task); |
d45f60c6 | 230 | void pnfs_set_layoutcommit(struct nfs_pgio_header *); |
378520b8 | 231 | void pnfs_commit_set_layoutcommit(struct nfs_commit_data *data); |
db29c089 | 232 | void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data); |
ef311537 | 233 | int pnfs_layoutcommit_inode(struct inode *inode, bool sync); |
cbe82603 | 234 | int _pnfs_return_layout(struct inode *); |
24028672 | 235 | int pnfs_commit_and_return_layout(struct inode *); |
d45f60c6 WAA |
236 | void pnfs_ld_write_done(struct nfs_pgio_header *); |
237 | void pnfs_ld_read_done(struct nfs_pgio_header *); | |
7c24d948 AA |
238 | struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino, |
239 | struct nfs_open_context *ctx, | |
240 | loff_t pos, | |
241 | u64 count, | |
242 | enum pnfs_iomode iomode, | |
243 | gfp_t gfp_flags); | |
e5e94017 | 244 | |
c47abcf8 | 245 | void nfs4_deviceid_mark_client_invalid(struct nfs_client *clp); |
53113ad3 WAA |
246 | int pnfs_read_done_resend_to_mds(struct nfs_pgio_header *); |
247 | int pnfs_write_done_resend_to_mds(struct nfs_pgio_header *); | |
82be417a | 248 | struct nfs4_threshold *pnfs_mdsthreshold_alloc(void); |
c47abcf8 AA |
249 | |
250 | /* nfs4_deviceid_flags */ | |
251 | enum { | |
252 | NFS_DEVICEID_INVALID = 0, /* set when MDS clientid recalled */ | |
1dfed273 | 253 | NFS_DEVICEID_UNAVAILABLE, /* device temporarily unavailable */ |
c47abcf8 AA |
254 | }; |
255 | ||
a1eaecbc BH |
256 | /* pnfs_dev.c */ |
257 | struct nfs4_deviceid_node { | |
258 | struct hlist_node node; | |
9e3bd4e2 | 259 | struct hlist_node tmpnode; |
1775bc34 | 260 | const struct pnfs_layoutdriver_type *ld; |
a1eaecbc | 261 | const struct nfs_client *nfs_client; |
c47abcf8 | 262 | unsigned long flags; |
1dfed273 | 263 | unsigned long timestamp_unavailable; |
a1eaecbc BH |
264 | struct nfs4_deviceid deviceid; |
265 | atomic_t ref; | |
266 | }; | |
267 | ||
661373b1 CH |
268 | struct nfs4_deviceid_node * |
269 | nfs4_find_get_deviceid(struct nfs_server *server, | |
270 | const struct nfs4_deviceid *id, struct rpc_cred *cred, | |
271 | gfp_t gfp_mask); | |
35c8bb54 | 272 | void nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *); |
661373b1 | 273 | void nfs4_init_deviceid_node(struct nfs4_deviceid_node *, struct nfs_server *, |
a1eaecbc BH |
274 | const struct nfs4_deviceid *); |
275 | struct nfs4_deviceid_node *nfs4_insert_deviceid_node(struct nfs4_deviceid_node *); | |
276 | bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *); | |
1dfed273 TM |
277 | void nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node); |
278 | bool nfs4_test_deviceid_unavailable(struct nfs4_deviceid_node *node); | |
1775bc34 | 279 | void nfs4_deviceid_purge_client(const struct nfs_client *); |
9dd2fcd3 CH |
280 | int nfs4_deviceid_getdevicelist(struct nfs_server *server, |
281 | const struct nfs_fh *fh); | |
a1eaecbc | 282 | |
d684d2ae | 283 | static inline struct pnfs_layout_segment * |
9369a431 | 284 | pnfs_get_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
285 | { |
286 | if (lseg) { | |
287 | atomic_inc(&lseg->pls_refcount); | |
4e857c58 | 288 | smp_mb__after_atomic(); |
d684d2ae FI |
289 | } |
290 | return lseg; | |
291 | } | |
292 | ||
e5e94017 BH |
293 | /* Return true if a layout driver is being used for this mountpoint */ |
294 | static inline int pnfs_enabled_sb(struct nfs_server *nfss) | |
295 | { | |
296 | return nfss->pnfs_curr_ld != NULL; | |
297 | } | |
85e174ba | 298 | |
a861a1e1 | 299 | static inline int |
ea2cf228 FI |
300 | pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, |
301 | struct nfs_commit_info *cinfo) | |
a861a1e1 | 302 | { |
ea2cf228 | 303 | if (cinfo->ds == NULL || cinfo->ds->ncommitting == 0) |
a861a1e1 | 304 | return PNFS_NOT_ATTEMPTED; |
ea2cf228 FI |
305 | return NFS_SERVER(inode)->pnfs_curr_ld->commit_pagelist(inode, mds_pages, how, cinfo); |
306 | } | |
307 | ||
308 | static inline struct pnfs_ds_commit_info * | |
309 | pnfs_get_ds_info(struct inode *inode) | |
310 | { | |
311 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; | |
312 | ||
313 | if (ld == NULL || ld->get_ds_info == NULL) | |
314 | return NULL; | |
315 | return ld->get_ds_info(inode); | |
a861a1e1 FI |
316 | } |
317 | ||
8dd37758 | 318 | static inline bool |
ea2cf228 FI |
319 | pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, |
320 | struct nfs_commit_info *cinfo) | |
a861a1e1 | 321 | { |
d6d6dc7c | 322 | struct inode *inode = req->wb_context->dentry->d_inode; |
8dd37758 | 323 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; |
a861a1e1 | 324 | |
8dd37758 TM |
325 | if (lseg == NULL || ld->mark_request_commit == NULL) |
326 | return false; | |
ea2cf228 | 327 | ld->mark_request_commit(req, lseg, cinfo); |
8dd37758 | 328 | return true; |
a861a1e1 FI |
329 | } |
330 | ||
8dd37758 | 331 | static inline bool |
ea2cf228 | 332 | pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) |
a861a1e1 | 333 | { |
d6d6dc7c | 334 | struct inode *inode = req->wb_context->dentry->d_inode; |
8dd37758 | 335 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; |
d6d6dc7c | 336 | |
8dd37758 TM |
337 | if (ld == NULL || ld->clear_request_commit == NULL) |
338 | return false; | |
ea2cf228 | 339 | ld->clear_request_commit(req, cinfo); |
8dd37758 | 340 | return true; |
d6d6dc7c FI |
341 | } |
342 | ||
343 | static inline int | |
ea2cf228 FI |
344 | pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, |
345 | int max) | |
d6d6dc7c | 346 | { |
ea2cf228 | 347 | if (cinfo->ds == NULL || cinfo->ds->nwritten == 0) |
d6d6dc7c | 348 | return 0; |
ea2cf228 FI |
349 | else |
350 | return NFS_SERVER(inode)->pnfs_curr_ld->scan_commit_lists(cinfo, max); | |
a861a1e1 FI |
351 | } |
352 | ||
1763da12 FI |
353 | static inline void |
354 | pnfs_recover_commit_reqs(struct inode *inode, struct list_head *list, | |
355 | struct nfs_commit_info *cinfo) | |
356 | { | |
357 | if (cinfo->ds == NULL || cinfo->ds->nwritten == 0) | |
358 | return; | |
359 | NFS_SERVER(inode)->pnfs_curr_ld->recover_commit_reqs(list, cinfo); | |
360 | } | |
361 | ||
02d1426c WAA |
362 | static inline struct nfs_page * |
363 | pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo, | |
364 | struct page *page) | |
365 | { | |
366 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; | |
367 | ||
368 | if (ld == NULL || ld->search_commit_reqs == NULL) | |
369 | return NULL; | |
370 | return ld->search_commit_reqs(cinfo, page); | |
371 | } | |
372 | ||
8a1636c4 BH |
373 | /* Should the pNFS client commit and return the layout upon a setattr */ |
374 | static inline bool | |
375 | pnfs_ld_layoutret_on_setattr(struct inode *inode) | |
376 | { | |
377 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) | |
378 | return false; | |
379 | return NFS_SERVER(inode)->pnfs_curr_ld->flags & | |
380 | PNFS_LAYOUTRET_ON_SETATTR; | |
381 | } | |
382 | ||
612aa983 CH |
383 | static inline bool |
384 | pnfs_ld_read_whole_page(struct inode *inode) | |
385 | { | |
386 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) | |
387 | return false; | |
388 | return NFS_SERVER(inode)->pnfs_curr_ld->flags & PNFS_READ_WHOLE_PAGE; | |
389 | } | |
390 | ||
d8c951c3 TM |
391 | static inline bool |
392 | pnfs_layoutcommit_outstanding(struct inode *inode) | |
393 | { | |
394 | struct nfs_inode *nfsi = NFS_I(inode); | |
395 | ||
396 | return test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags) != 0 || | |
397 | test_bit(NFS_INO_LAYOUTCOMMITTING, &nfsi->flags) != 0; | |
398 | } | |
399 | ||
cbe82603 BH |
400 | static inline int pnfs_return_layout(struct inode *ino) |
401 | { | |
402 | struct nfs_inode *nfsi = NFS_I(ino); | |
403 | struct nfs_server *nfss = NFS_SERVER(ino); | |
404 | ||
405 | if (pnfs_enabled_sb(nfss) && nfsi->layout) | |
406 | return _pnfs_return_layout(ino); | |
407 | ||
408 | return 0; | |
409 | } | |
410 | ||
82be417a AA |
411 | static inline bool |
412 | pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, | |
413 | struct nfs_server *nfss) | |
414 | { | |
fb47ddc9 | 415 | return (dst && src && src->bm != 0 && nfss->pnfs_curr_ld && |
82be417a AA |
416 | nfss->pnfs_curr_ld->id == src->l_type); |
417 | } | |
418 | ||
6f00866d TM |
419 | #ifdef NFS_DEBUG |
420 | void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id); | |
421 | #else | |
422 | static inline void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id) | |
423 | { | |
424 | } | |
425 | #endif /* NFS_DEBUG */ | |
85e174ba RL |
426 | #else /* CONFIG_NFS_V4_1 */ |
427 | ||
974cec8c AA |
428 | static inline void pnfs_destroy_all_layouts(struct nfs_client *clp) |
429 | { | |
430 | } | |
431 | ||
e5e94017 BH |
432 | static inline void pnfs_destroy_layout(struct nfs_inode *nfsi) |
433 | { | |
434 | } | |
435 | ||
d684d2ae | 436 | static inline struct pnfs_layout_segment * |
9369a431 | 437 | pnfs_get_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
438 | { |
439 | return NULL; | |
440 | } | |
441 | ||
9369a431 | 442 | static inline void pnfs_put_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
443 | { |
444 | } | |
445 | ||
e6cf82d1 WAA |
446 | static inline void pnfs_put_lseg_async(struct pnfs_layout_segment *lseg) |
447 | { | |
448 | } | |
449 | ||
cbe82603 BH |
450 | static inline int pnfs_return_layout(struct inode *ino) |
451 | { | |
452 | return 0; | |
453 | } | |
454 | ||
24028672 TM |
455 | static inline int pnfs_commit_and_return_layout(struct inode *inode) |
456 | { | |
457 | return 0; | |
458 | } | |
459 | ||
8a1636c4 BH |
460 | static inline bool |
461 | pnfs_ld_layoutret_on_setattr(struct inode *inode) | |
462 | { | |
463 | return false; | |
464 | } | |
465 | ||
612aa983 CH |
466 | static inline bool |
467 | pnfs_ld_read_whole_page(struct inode *inode) | |
468 | { | |
469 | return false; | |
470 | } | |
471 | ||
f7e8917a FI |
472 | static inline bool |
473 | pnfs_roc(struct inode *ino) | |
474 | { | |
475 | return false; | |
476 | } | |
477 | ||
478 | static inline void | |
479 | pnfs_roc_release(struct inode *ino) | |
480 | { | |
481 | } | |
482 | ||
483 | static inline void | |
484 | pnfs_roc_set_barrier(struct inode *ino, u32 barrier) | |
485 | { | |
486 | } | |
487 | ||
488 | static inline bool | |
7fdab069 | 489 | pnfs_roc_drain(struct inode *ino, u32 *barrier, struct rpc_task *task) |
f7e8917a FI |
490 | { |
491 | return false; | |
492 | } | |
493 | ||
738fd0f3 | 494 | static inline void set_pnfs_layoutdriver(struct nfs_server *s, |
a00ed25c | 495 | const struct nfs_fh *mntfh, u32 id) |
85e174ba RL |
496 | { |
497 | } | |
498 | ||
499 | static inline void unset_pnfs_layoutdriver(struct nfs_server *s) | |
500 | { | |
501 | } | |
502 | ||
a861a1e1 | 503 | static inline int |
ea2cf228 FI |
504 | pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, |
505 | struct nfs_commit_info *cinfo) | |
a861a1e1 FI |
506 | { |
507 | return PNFS_NOT_ATTEMPTED; | |
508 | } | |
509 | ||
ea2cf228 FI |
510 | static inline struct pnfs_ds_commit_info * |
511 | pnfs_get_ds_info(struct inode *inode) | |
512 | { | |
513 | return NULL; | |
514 | } | |
515 | ||
8dd37758 | 516 | static inline bool |
ea2cf228 FI |
517 | pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, |
518 | struct nfs_commit_info *cinfo) | |
a861a1e1 | 519 | { |
8dd37758 | 520 | return false; |
a861a1e1 FI |
521 | } |
522 | ||
8dd37758 | 523 | static inline bool |
ea2cf228 | 524 | pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) |
a861a1e1 | 525 | { |
8dd37758 | 526 | return false; |
d6d6dc7c FI |
527 | } |
528 | ||
529 | static inline int | |
ea2cf228 FI |
530 | pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, |
531 | int max) | |
d6d6dc7c FI |
532 | { |
533 | return 0; | |
a861a1e1 FI |
534 | } |
535 | ||
1763da12 FI |
536 | static inline void |
537 | pnfs_recover_commit_reqs(struct inode *inode, struct list_head *list, | |
538 | struct nfs_commit_info *cinfo) | |
539 | { | |
540 | } | |
541 | ||
02d1426c WAA |
542 | static inline struct nfs_page * |
543 | pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo, | |
544 | struct page *page) | |
545 | { | |
546 | return NULL; | |
547 | } | |
548 | ||
ef311537 | 549 | static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync) |
863a3c6c AA |
550 | { |
551 | return 0; | |
552 | } | |
1775bc34 | 553 | |
82be417a AA |
554 | static inline bool |
555 | pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, | |
556 | struct nfs_server *nfss) | |
557 | { | |
558 | return false; | |
559 | } | |
560 | ||
d8c951c3 TM |
561 | static inline bool |
562 | pnfs_layoutcommit_outstanding(struct inode *inode) | |
563 | { | |
564 | return false; | |
565 | } | |
566 | ||
567 | ||
82be417a AA |
568 | static inline struct nfs4_threshold *pnfs_mdsthreshold_alloc(void) |
569 | { | |
570 | return NULL; | |
571 | } | |
572 | ||
85e174ba RL |
573 | #endif /* CONFIG_NFS_V4_1 */ |
574 | ||
575 | #endif /* FS_NFS_PNFS_H */ |