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