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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 | ||
875ae069 PT |
43 | /* Individual ip address */ |
44 | struct nfs4_pnfs_ds_addr { | |
45 | struct sockaddr_storage da_addr; | |
46 | size_t da_addrlen; | |
47 | struct list_head da_node; /* nfs4_pnfs_dev_hlist dev_dslist */ | |
48 | char *da_remotestr; /* human readable addr+port */ | |
49 | }; | |
50 | ||
51 | struct nfs4_pnfs_ds { | |
52 | struct list_head ds_node; /* nfs4_pnfs_dev_hlist dev_dslist */ | |
53 | char *ds_remotestr; /* comma sep list of addrs */ | |
54 | struct list_head ds_addrs; | |
55 | struct nfs_client *ds_clp; | |
56 | atomic_t ds_count; | |
57 | unsigned long ds_state; | |
58 | #define NFS4DS_CONNECTING 0 /* ds is establishing connection */ | |
59 | }; | |
60 | ||
974cec8c | 61 | struct pnfs_layout_segment { |
566052c5 | 62 | struct list_head pls_list; |
a9bae566 | 63 | struct list_head pls_lc_list; |
566052c5 | 64 | struct pnfs_layout_range pls_range; |
4541d16c FI |
65 | atomic_t pls_refcount; |
66 | unsigned long pls_flags; | |
566052c5 | 67 | struct pnfs_layout_hdr *pls_layout; |
e6cf82d1 | 68 | struct work_struct pls_work; |
974cec8c AA |
69 | }; |
70 | ||
64419a9b AA |
71 | enum pnfs_try_status { |
72 | PNFS_ATTEMPTED = 0, | |
73 | PNFS_NOT_ATTEMPTED = 1, | |
74 | }; | |
75 | ||
85e174ba RL |
76 | #ifdef CONFIG_NFS_V4_1 |
77 | ||
78 | #define LAYOUT_NFSV4_1_MODULE_PREFIX "nfs-layouttype4" | |
79 | ||
39280a5a PT |
80 | /* |
81 | * Default data server connection timeout and retrans vaules. | |
82 | * Set by module parameters dataserver_timeo and dataserver_retrans. | |
83 | */ | |
84 | #define NFS4_DEF_DS_TIMEO 600 /* in tenths of a second */ | |
85 | #define NFS4_DEF_DS_RETRANS 5 | |
86 | ||
87 | /* error codes for internal use */ | |
88 | #define NFS4ERR_RESET_TO_MDS 12001 | |
89 | #define NFS4ERR_RESET_TO_PNFS 12002 | |
90 | ||
e5e94017 BH |
91 | enum { |
92 | NFS_LAYOUT_RO_FAILED = 0, /* get ro layout failed stop trying */ | |
93 | NFS_LAYOUT_RW_FAILED, /* get rw layout failed stop trying */ | |
43f1b3da | 94 | NFS_LAYOUT_BULK_RECALL, /* bulk recall affecting layout */ |
f7e8917a | 95 | NFS_LAYOUT_ROC, /* some lseg had roc bit set */ |
d527e5c1 | 96 | NFS_LAYOUT_RETURN, /* Return this layout ASAP */ |
47abadef | 97 | NFS_LAYOUT_INVALID_STID, /* layout stateid id is invalid */ |
e5e94017 BH |
98 | }; |
99 | ||
8a1636c4 | 100 | enum layoutdriver_policy_flags { |
88ac815c PT |
101 | /* Should the pNFS client commit and return the layout upon truncate to |
102 | * a smaller size */ | |
8a1636c4 | 103 | PNFS_LAYOUTRET_ON_SETATTR = 1 << 0, |
fe0fe835 | 104 | PNFS_LAYOUTRET_ON_ERROR = 1 << 1, |
612aa983 | 105 | PNFS_READ_WHOLE_PAGE = 1 << 2, |
8a1636c4 BH |
106 | }; |
107 | ||
1775bc34 BH |
108 | struct nfs4_deviceid_node; |
109 | ||
85e174ba RL |
110 | /* Per-layout driver specific registration structure */ |
111 | struct pnfs_layoutdriver_type { | |
02c35fca FI |
112 | struct list_head pnfs_tblid; |
113 | const u32 id; | |
114 | const char *name; | |
115 | struct module *owner; | |
8a1636c4 | 116 | unsigned flags; |
661373b1 | 117 | unsigned max_deviceinfo_size; |
636fb9c8 | 118 | |
738fd0f3 BH |
119 | int (*set_layoutdriver) (struct nfs_server *, const struct nfs_fh *); |
120 | int (*clear_layoutdriver) (struct nfs_server *); | |
121 | ||
636fb9c8 BH |
122 | struct pnfs_layout_hdr * (*alloc_layout_hdr) (struct inode *inode, gfp_t gfp_flags); |
123 | void (*free_layout_hdr) (struct pnfs_layout_hdr *); | |
124 | ||
a75b9df9 | 125 | struct pnfs_layout_segment * (*alloc_lseg) (struct pnfs_layout_hdr *layoutid, struct nfs4_layoutget_res *lgr, gfp_t gfp_flags); |
b1f69b75 | 126 | void (*free_lseg) (struct pnfs_layout_segment *lseg); |
94ad1c80 | 127 | |
c88953d8 CH |
128 | void (*return_range) (struct pnfs_layout_hdr *lo, |
129 | struct pnfs_layout_range *range); | |
130 | ||
94ad1c80 | 131 | /* test for nfs page cache coalescing */ |
1751c363 TM |
132 | const struct nfs_pageio_ops *pg_read_ops; |
133 | const struct nfs_pageio_ops *pg_write_ops; | |
64419a9b | 134 | |
ea2cf228 | 135 | struct pnfs_ds_commit_info *(*get_ds_info) (struct inode *inode); |
8dd37758 | 136 | void (*mark_request_commit) (struct nfs_page *req, |
ea2cf228 FI |
137 | struct pnfs_layout_segment *lseg, |
138 | struct nfs_commit_info *cinfo); | |
139 | void (*clear_request_commit) (struct nfs_page *req, | |
140 | struct nfs_commit_info *cinfo); | |
141 | int (*scan_commit_lists) (struct nfs_commit_info *cinfo, | |
142 | int max); | |
1763da12 FI |
143 | void (*recover_commit_reqs) (struct list_head *list, |
144 | struct nfs_commit_info *cinfo); | |
02d1426c WAA |
145 | struct nfs_page * (*search_commit_reqs)(struct nfs_commit_info *cinfo, |
146 | struct page *page); | |
ea2cf228 FI |
147 | int (*commit_pagelist)(struct inode *inode, |
148 | struct list_head *mds_pages, | |
149 | int how, | |
150 | struct nfs_commit_info *cinfo); | |
a861a1e1 | 151 | |
64419a9b AA |
152 | /* |
153 | * Return PNFS_ATTEMPTED to indicate the layout code has attempted | |
154 | * I/O, else return PNFS_NOT_ATTEMPTED to fall back to normal NFS | |
155 | */ | |
d45f60c6 WAA |
156 | enum pnfs_try_status (*read_pagelist)(struct nfs_pgio_header *); |
157 | enum pnfs_try_status (*write_pagelist)(struct nfs_pgio_header *, int); | |
1775bc34 BH |
158 | |
159 | void (*free_deviceid_node) (struct nfs4_deviceid_node *); | |
661373b1 CH |
160 | struct nfs4_deviceid_node * (*alloc_deviceid_node) |
161 | (struct nfs_server *server, struct pnfs_device *pdev, | |
162 | gfp_t gfp_flags); | |
04a55549 AA |
163 | |
164 | void (*encode_layoutreturn) (struct pnfs_layout_hdr *layoutid, | |
165 | struct xdr_stream *xdr, | |
166 | const struct nfs4_layoutreturn_args *args); | |
ac7db726 | 167 | |
db29c089 | 168 | void (*cleanup_layoutcommit) (struct nfs4_layoutcommit_data *data); |
5f919c9f CH |
169 | int (*prepare_layoutcommit) (struct nfs4_layoutcommit_args *args); |
170 | void (*encode_layoutcommit) (struct pnfs_layout_hdr *lo, | |
ac7db726 BH |
171 | struct xdr_stream *xdr, |
172 | const struct nfs4_layoutcommit_args *args); | |
85e174ba RL |
173 | }; |
174 | ||
e5e94017 | 175 | struct pnfs_layout_hdr { |
cc6e5340 | 176 | atomic_t plh_refcount; |
b7edfaa1 | 177 | struct list_head plh_layouts; /* other client layouts */ |
fd9a8d71 | 178 | struct list_head plh_bulk_destroy; |
b7edfaa1 | 179 | struct list_head plh_segs; /* layout segments list */ |
b7edfaa1 | 180 | nfs4_stateid plh_stateid; |
cf7d63f1 | 181 | atomic_t plh_outstanding; /* number of RPCs out */ |
f7e8917a | 182 | unsigned long plh_block_lgets; /* block LAYOUTGET if >0 */ |
43f1b3da | 183 | u32 plh_barrier; /* ignore lower seqids */ |
25c75333 | 184 | unsigned long plh_retry_timestamp; |
566052c5 | 185 | unsigned long plh_flags; |
acff5880 | 186 | loff_t plh_lwb; /* last write byte for layoutcommit */ |
9fa40758 | 187 | struct rpc_cred *plh_lc_cred; /* layoutcommit cred */ |
b7edfaa1 | 188 | struct inode *plh_inode; |
e5e94017 BH |
189 | }; |
190 | ||
b1f69b75 AA |
191 | struct pnfs_device { |
192 | struct nfs4_deviceid dev_id; | |
193 | unsigned int layout_type; | |
194 | unsigned int mincount; | |
f1c097be | 195 | unsigned int maxcount; /* gdia_maxcount */ |
b1f69b75 | 196 | struct page **pages; |
b1f69b75 | 197 | unsigned int pgbase; |
f1c097be | 198 | unsigned int pglen; /* reply buffer length */ |
b1f69b75 AA |
199 | }; |
200 | ||
7f11d8d3 AA |
201 | #define NFS4_PNFS_GETDEVLIST_MAXNUM 16 |
202 | ||
203 | struct pnfs_devicelist { | |
204 | unsigned int eof; | |
205 | unsigned int num_devs; | |
206 | struct nfs4_deviceid dev_id[NFS4_PNFS_GETDEVLIST_MAXNUM]; | |
207 | }; | |
208 | ||
02c35fca FI |
209 | extern int pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *); |
210 | extern void pnfs_unregister_layoutdriver(struct pnfs_layoutdriver_type *); | |
211 | ||
b1f69b75 AA |
212 | /* nfs4proc.c */ |
213 | extern int nfs4_proc_getdeviceinfo(struct nfs_server *server, | |
cd5875fe TM |
214 | struct pnfs_device *dev, |
215 | struct rpc_cred *cred); | |
a0b0a6e3 | 216 | extern struct pnfs_layout_segment* nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags); |
cbe82603 | 217 | extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp); |
b1f69b75 AA |
218 | |
219 | /* pnfs.c */ | |
70c3bd2b | 220 | void pnfs_get_layout_hdr(struct pnfs_layout_hdr *lo); |
9369a431 | 221 | void pnfs_put_lseg(struct pnfs_layout_segment *lseg); |
6543f803 | 222 | void pnfs_put_lseg_locked(struct pnfs_layout_segment *lseg); |
1751c363 | 223 | |
738fd0f3 | 224 | void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, u32); |
85e174ba | 225 | void unset_pnfs_layoutdriver(struct nfs_server *); |
d8007d4d | 226 | void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *, struct nfs_page *); |
493292dd | 227 | int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc); |
6296556f PT |
228 | void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio, |
229 | struct nfs_page *req, u64 wb_size); | |
dce81290 | 230 | int pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc); |
b4fdac1a WAA |
231 | size_t pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, |
232 | struct nfs_page *prev, struct nfs_page *req); | |
1b0ae068 | 233 | void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg); |
a0b0a6e3 | 234 | struct pnfs_layout_segment *pnfs_layout_process(struct nfs4_layoutget *lgp); |
43f1b3da | 235 | void pnfs_free_lseg_list(struct list_head *tmp_list); |
e5e94017 | 236 | void pnfs_destroy_layout(struct nfs_inode *); |
974cec8c | 237 | void pnfs_destroy_all_layouts(struct nfs_client *); |
fd9a8d71 TM |
238 | int pnfs_destroy_layouts_byfsid(struct nfs_client *clp, |
239 | struct nfs_fsid *fsid, | |
240 | bool is_recall); | |
241 | int pnfs_destroy_layouts_byclid(struct nfs_client *clp, | |
242 | bool is_recall); | |
70c3bd2b | 243 | void pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo); |
43f1b3da FI |
244 | void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, |
245 | const nfs4_stateid *new, | |
246 | bool update_barrier); | |
fd6002e9 FI |
247 | int pnfs_choose_layoutget_stateid(nfs4_stateid *dst, |
248 | struct pnfs_layout_hdr *lo, | |
249 | struct nfs4_state *open_state); | |
49a85061 | 250 | int pnfs_mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo, |
43f1b3da | 251 | struct list_head *tmp_list, |
778b5502 | 252 | struct pnfs_layout_range *recall_range); |
f7e8917a FI |
253 | bool pnfs_roc(struct inode *ino); |
254 | void pnfs_roc_release(struct inode *ino); | |
255 | void pnfs_roc_set_barrier(struct inode *ino, u32 barrier); | |
7fdab069 | 256 | bool pnfs_roc_drain(struct inode *ino, u32 *barrier, struct rpc_task *task); |
d45f60c6 | 257 | void pnfs_set_layoutcommit(struct nfs_pgio_header *); |
378520b8 | 258 | void pnfs_commit_set_layoutcommit(struct nfs_commit_data *data); |
db29c089 | 259 | void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data); |
ef311537 | 260 | int pnfs_layoutcommit_inode(struct inode *inode, bool sync); |
cbe82603 | 261 | int _pnfs_return_layout(struct inode *); |
24028672 | 262 | int pnfs_commit_and_return_layout(struct inode *); |
d45f60c6 WAA |
263 | void pnfs_ld_write_done(struct nfs_pgio_header *); |
264 | void pnfs_ld_read_done(struct nfs_pgio_header *); | |
7c24d948 AA |
265 | struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino, |
266 | struct nfs_open_context *ctx, | |
267 | loff_t pos, | |
268 | u64 count, | |
269 | enum pnfs_iomode iomode, | |
270 | gfp_t gfp_flags); | |
e5e94017 | 271 | |
c47abcf8 | 272 | void nfs4_deviceid_mark_client_invalid(struct nfs_client *clp); |
53113ad3 WAA |
273 | int pnfs_read_done_resend_to_mds(struct nfs_pgio_header *); |
274 | int pnfs_write_done_resend_to_mds(struct nfs_pgio_header *); | |
82be417a | 275 | struct nfs4_threshold *pnfs_mdsthreshold_alloc(void); |
c47abcf8 AA |
276 | |
277 | /* nfs4_deviceid_flags */ | |
278 | enum { | |
279 | NFS_DEVICEID_INVALID = 0, /* set when MDS clientid recalled */ | |
1dfed273 | 280 | NFS_DEVICEID_UNAVAILABLE, /* device temporarily unavailable */ |
c47abcf8 AA |
281 | }; |
282 | ||
a1eaecbc BH |
283 | /* pnfs_dev.c */ |
284 | struct nfs4_deviceid_node { | |
285 | struct hlist_node node; | |
9e3bd4e2 | 286 | struct hlist_node tmpnode; |
1775bc34 | 287 | const struct pnfs_layoutdriver_type *ld; |
a1eaecbc | 288 | const struct nfs_client *nfs_client; |
c47abcf8 | 289 | unsigned long flags; |
1dfed273 | 290 | unsigned long timestamp_unavailable; |
a1eaecbc BH |
291 | struct nfs4_deviceid deviceid; |
292 | atomic_t ref; | |
293 | }; | |
294 | ||
661373b1 CH |
295 | struct nfs4_deviceid_node * |
296 | nfs4_find_get_deviceid(struct nfs_server *server, | |
297 | const struct nfs4_deviceid *id, struct rpc_cred *cred, | |
298 | gfp_t gfp_mask); | |
35c8bb54 | 299 | void nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *); |
661373b1 | 300 | void nfs4_init_deviceid_node(struct nfs4_deviceid_node *, struct nfs_server *, |
a1eaecbc | 301 | const struct nfs4_deviceid *); |
a1eaecbc | 302 | bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *); |
1dfed273 TM |
303 | void nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node); |
304 | bool nfs4_test_deviceid_unavailable(struct nfs4_deviceid_node *node); | |
1775bc34 | 305 | void nfs4_deviceid_purge_client(const struct nfs_client *); |
a1eaecbc | 306 | |
f54bcf2e TH |
307 | /* pnfs_nfs.c */ |
308 | void pnfs_generic_clear_request_commit(struct nfs_page *req, | |
309 | struct nfs_commit_info *cinfo); | |
310 | void pnfs_generic_commit_release(void *calldata); | |
311 | void pnfs_generic_prepare_to_resend_writes(struct nfs_commit_data *data); | |
312 | void pnfs_generic_rw_release(void *data); | |
313 | void pnfs_generic_recover_commit_reqs(struct list_head *dst, | |
314 | struct nfs_commit_info *cinfo); | |
315 | int pnfs_generic_commit_pagelist(struct inode *inode, | |
316 | struct list_head *mds_pages, | |
317 | int how, | |
318 | struct nfs_commit_info *cinfo, | |
319 | int (*initiate_commit)(struct nfs_commit_data *data, | |
320 | int how)); | |
321 | int pnfs_generic_scan_commit_lists(struct nfs_commit_info *cinfo, int max); | |
322 | void pnfs_generic_write_commit_done(struct rpc_task *task, void *data); | |
875ae069 PT |
323 | void nfs4_pnfs_ds_put(struct nfs4_pnfs_ds *ds); |
324 | struct nfs4_pnfs_ds *nfs4_pnfs_ds_add(struct list_head *dsaddrs, | |
325 | gfp_t gfp_flags); | |
7405f9e1 PT |
326 | void nfs4_pnfs_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds, |
327 | struct nfs4_deviceid_node *devid, unsigned int timeo, | |
064172f3 | 328 | unsigned int retrans, rpc_authflavor_t au_flavor); |
6b7f3cf9 PT |
329 | struct nfs4_pnfs_ds_addr *nfs4_decode_mp_ds_addr(struct net *net, |
330 | struct xdr_stream *xdr, | |
331 | gfp_t gfp_flags); | |
f54bcf2e | 332 | |
30ff0603 CH |
333 | static inline struct nfs4_deviceid_node * |
334 | nfs4_get_deviceid(struct nfs4_deviceid_node *d) | |
335 | { | |
336 | atomic_inc(&d->ref); | |
337 | return d; | |
338 | } | |
339 | ||
d684d2ae | 340 | static inline struct pnfs_layout_segment * |
9369a431 | 341 | pnfs_get_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
342 | { |
343 | if (lseg) { | |
344 | atomic_inc(&lseg->pls_refcount); | |
4e857c58 | 345 | smp_mb__after_atomic(); |
d684d2ae FI |
346 | } |
347 | return lseg; | |
348 | } | |
349 | ||
e5e94017 BH |
350 | /* Return true if a layout driver is being used for this mountpoint */ |
351 | static inline int pnfs_enabled_sb(struct nfs_server *nfss) | |
352 | { | |
353 | return nfss->pnfs_curr_ld != NULL; | |
354 | } | |
85e174ba | 355 | |
a861a1e1 | 356 | static inline int |
ea2cf228 FI |
357 | pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, |
358 | struct nfs_commit_info *cinfo) | |
a861a1e1 | 359 | { |
ea2cf228 | 360 | if (cinfo->ds == NULL || cinfo->ds->ncommitting == 0) |
a861a1e1 | 361 | return PNFS_NOT_ATTEMPTED; |
ea2cf228 FI |
362 | return NFS_SERVER(inode)->pnfs_curr_ld->commit_pagelist(inode, mds_pages, how, cinfo); |
363 | } | |
364 | ||
365 | static inline struct pnfs_ds_commit_info * | |
366 | pnfs_get_ds_info(struct inode *inode) | |
367 | { | |
368 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; | |
369 | ||
370 | if (ld == NULL || ld->get_ds_info == NULL) | |
371 | return NULL; | |
372 | return ld->get_ds_info(inode); | |
a861a1e1 FI |
373 | } |
374 | ||
f54bcf2e TH |
375 | static inline void |
376 | pnfs_generic_mark_devid_invalid(struct nfs4_deviceid_node *node) | |
377 | { | |
378 | set_bit(NFS_DEVICEID_INVALID, &node->flags); | |
379 | } | |
380 | ||
8dd37758 | 381 | static inline bool |
ea2cf228 FI |
382 | pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, |
383 | struct nfs_commit_info *cinfo) | |
a861a1e1 | 384 | { |
d6d6dc7c | 385 | struct inode *inode = req->wb_context->dentry->d_inode; |
8dd37758 | 386 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; |
a861a1e1 | 387 | |
8dd37758 TM |
388 | if (lseg == NULL || ld->mark_request_commit == NULL) |
389 | return false; | |
ea2cf228 | 390 | ld->mark_request_commit(req, lseg, cinfo); |
8dd37758 | 391 | return true; |
a861a1e1 FI |
392 | } |
393 | ||
8dd37758 | 394 | static inline bool |
ea2cf228 | 395 | pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) |
a861a1e1 | 396 | { |
d6d6dc7c | 397 | struct inode *inode = req->wb_context->dentry->d_inode; |
8dd37758 | 398 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; |
d6d6dc7c | 399 | |
8dd37758 TM |
400 | if (ld == NULL || ld->clear_request_commit == NULL) |
401 | return false; | |
ea2cf228 | 402 | ld->clear_request_commit(req, cinfo); |
8dd37758 | 403 | return true; |
d6d6dc7c FI |
404 | } |
405 | ||
406 | static inline int | |
ea2cf228 FI |
407 | pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, |
408 | int max) | |
d6d6dc7c | 409 | { |
ea2cf228 | 410 | if (cinfo->ds == NULL || cinfo->ds->nwritten == 0) |
d6d6dc7c | 411 | return 0; |
ea2cf228 FI |
412 | else |
413 | return NFS_SERVER(inode)->pnfs_curr_ld->scan_commit_lists(cinfo, max); | |
a861a1e1 FI |
414 | } |
415 | ||
02d1426c WAA |
416 | static inline struct nfs_page * |
417 | pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo, | |
418 | struct page *page) | |
419 | { | |
420 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; | |
421 | ||
422 | if (ld == NULL || ld->search_commit_reqs == NULL) | |
423 | return NULL; | |
424 | return ld->search_commit_reqs(cinfo, page); | |
425 | } | |
426 | ||
8a1636c4 BH |
427 | /* Should the pNFS client commit and return the layout upon a setattr */ |
428 | static inline bool | |
429 | pnfs_ld_layoutret_on_setattr(struct inode *inode) | |
430 | { | |
431 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) | |
432 | return false; | |
433 | return NFS_SERVER(inode)->pnfs_curr_ld->flags & | |
434 | PNFS_LAYOUTRET_ON_SETATTR; | |
435 | } | |
436 | ||
612aa983 CH |
437 | static inline bool |
438 | pnfs_ld_read_whole_page(struct inode *inode) | |
439 | { | |
440 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) | |
441 | return false; | |
442 | return NFS_SERVER(inode)->pnfs_curr_ld->flags & PNFS_READ_WHOLE_PAGE; | |
443 | } | |
444 | ||
d8c951c3 TM |
445 | static inline bool |
446 | pnfs_layoutcommit_outstanding(struct inode *inode) | |
447 | { | |
448 | struct nfs_inode *nfsi = NFS_I(inode); | |
449 | ||
450 | return test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags) != 0 || | |
451 | test_bit(NFS_INO_LAYOUTCOMMITTING, &nfsi->flags) != 0; | |
452 | } | |
453 | ||
cbe82603 BH |
454 | static inline int pnfs_return_layout(struct inode *ino) |
455 | { | |
456 | struct nfs_inode *nfsi = NFS_I(ino); | |
457 | struct nfs_server *nfss = NFS_SERVER(ino); | |
458 | ||
459 | if (pnfs_enabled_sb(nfss) && nfsi->layout) | |
460 | return _pnfs_return_layout(ino); | |
461 | ||
462 | return 0; | |
463 | } | |
464 | ||
82be417a AA |
465 | static inline bool |
466 | pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, | |
467 | struct nfs_server *nfss) | |
468 | { | |
fb47ddc9 | 469 | return (dst && src && src->bm != 0 && nfss->pnfs_curr_ld && |
82be417a AA |
470 | nfss->pnfs_curr_ld->id == src->l_type); |
471 | } | |
472 | ||
6f00866d TM |
473 | #ifdef NFS_DEBUG |
474 | void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id); | |
475 | #else | |
476 | static inline void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id) | |
477 | { | |
478 | } | |
479 | #endif /* NFS_DEBUG */ | |
85e174ba RL |
480 | #else /* CONFIG_NFS_V4_1 */ |
481 | ||
974cec8c AA |
482 | static inline void pnfs_destroy_all_layouts(struct nfs_client *clp) |
483 | { | |
484 | } | |
485 | ||
e5e94017 BH |
486 | static inline void pnfs_destroy_layout(struct nfs_inode *nfsi) |
487 | { | |
488 | } | |
489 | ||
d684d2ae | 490 | static inline struct pnfs_layout_segment * |
9369a431 | 491 | pnfs_get_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
492 | { |
493 | return NULL; | |
494 | } | |
495 | ||
9369a431 | 496 | static inline void pnfs_put_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
497 | { |
498 | } | |
499 | ||
cbe82603 BH |
500 | static inline int pnfs_return_layout(struct inode *ino) |
501 | { | |
502 | return 0; | |
503 | } | |
504 | ||
24028672 TM |
505 | static inline int pnfs_commit_and_return_layout(struct inode *inode) |
506 | { | |
507 | return 0; | |
508 | } | |
509 | ||
8a1636c4 BH |
510 | static inline bool |
511 | pnfs_ld_layoutret_on_setattr(struct inode *inode) | |
512 | { | |
513 | return false; | |
514 | } | |
515 | ||
612aa983 CH |
516 | static inline bool |
517 | pnfs_ld_read_whole_page(struct inode *inode) | |
518 | { | |
519 | return false; | |
520 | } | |
521 | ||
f7e8917a FI |
522 | static inline bool |
523 | pnfs_roc(struct inode *ino) | |
524 | { | |
525 | return false; | |
526 | } | |
527 | ||
528 | static inline void | |
529 | pnfs_roc_release(struct inode *ino) | |
530 | { | |
531 | } | |
532 | ||
533 | static inline void | |
534 | pnfs_roc_set_barrier(struct inode *ino, u32 barrier) | |
535 | { | |
536 | } | |
537 | ||
538 | static inline bool | |
7fdab069 | 539 | pnfs_roc_drain(struct inode *ino, u32 *barrier, struct rpc_task *task) |
f7e8917a FI |
540 | { |
541 | return false; | |
542 | } | |
543 | ||
738fd0f3 | 544 | static inline void set_pnfs_layoutdriver(struct nfs_server *s, |
a00ed25c | 545 | const struct nfs_fh *mntfh, u32 id) |
85e174ba RL |
546 | { |
547 | } | |
548 | ||
549 | static inline void unset_pnfs_layoutdriver(struct nfs_server *s) | |
550 | { | |
551 | } | |
552 | ||
a861a1e1 | 553 | static inline int |
ea2cf228 FI |
554 | pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, |
555 | struct nfs_commit_info *cinfo) | |
a861a1e1 FI |
556 | { |
557 | return PNFS_NOT_ATTEMPTED; | |
558 | } | |
559 | ||
ea2cf228 FI |
560 | static inline struct pnfs_ds_commit_info * |
561 | pnfs_get_ds_info(struct inode *inode) | |
562 | { | |
563 | return NULL; | |
564 | } | |
565 | ||
8dd37758 | 566 | static inline bool |
ea2cf228 FI |
567 | pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, |
568 | struct nfs_commit_info *cinfo) | |
a861a1e1 | 569 | { |
8dd37758 | 570 | return false; |
a861a1e1 FI |
571 | } |
572 | ||
8dd37758 | 573 | static inline bool |
ea2cf228 | 574 | pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) |
a861a1e1 | 575 | { |
8dd37758 | 576 | return false; |
d6d6dc7c FI |
577 | } |
578 | ||
579 | static inline int | |
ea2cf228 FI |
580 | pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, |
581 | int max) | |
d6d6dc7c FI |
582 | { |
583 | return 0; | |
a861a1e1 FI |
584 | } |
585 | ||
02d1426c WAA |
586 | static inline struct nfs_page * |
587 | pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo, | |
588 | struct page *page) | |
589 | { | |
590 | return NULL; | |
591 | } | |
592 | ||
ef311537 | 593 | static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync) |
863a3c6c AA |
594 | { |
595 | return 0; | |
596 | } | |
1775bc34 | 597 | |
82be417a AA |
598 | static inline bool |
599 | pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, | |
600 | struct nfs_server *nfss) | |
601 | { | |
602 | return false; | |
603 | } | |
604 | ||
d8c951c3 TM |
605 | static inline bool |
606 | pnfs_layoutcommit_outstanding(struct inode *inode) | |
607 | { | |
608 | return false; | |
609 | } | |
610 | ||
611 | ||
82be417a AA |
612 | static inline struct nfs4_threshold *pnfs_mdsthreshold_alloc(void) |
613 | { | |
614 | return NULL; | |
615 | } | |
616 | ||
85e174ba RL |
617 | #endif /* CONFIG_NFS_V4_1 */ |
618 | ||
619 | #endif /* FS_NFS_PNFS_H */ |