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 | ||
a2a5dea7 | 33 | #include <linux/refcount.h> |
45df3c8b | 34 | #include <linux/nfs_fs.h> |
94ad1c80 | 35 | #include <linux/nfs_page.h> |
e6cf82d1 | 36 | #include <linux/workqueue.h> |
94ad1c80 | 37 | |
2409a976 FI |
38 | struct nfs4_opendata; |
39 | ||
4541d16c FI |
40 | enum { |
41 | NFS_LSEG_VALID = 0, /* cleared when lseg is recalled/returned */ | |
f7e8917a | 42 | NFS_LSEG_ROC, /* roc bit received from server */ |
a9bae566 | 43 | NFS_LSEG_LAYOUTCOMMIT, /* layoutcommit bit set for layoutcommit */ |
016256df | 44 | NFS_LSEG_LAYOUTRETURN, /* layoutreturn bit set for layoutreturn */ |
b3dce6a2 | 45 | NFS_LSEG_UNAVAILABLE, /* unavailable bit set for temporary problem */ |
4541d16c FI |
46 | }; |
47 | ||
875ae069 PT |
48 | /* Individual ip address */ |
49 | struct nfs4_pnfs_ds_addr { | |
50 | struct sockaddr_storage da_addr; | |
51 | size_t da_addrlen; | |
52 | struct list_head da_node; /* nfs4_pnfs_dev_hlist dev_dslist */ | |
53 | char *da_remotestr; /* human readable addr+port */ | |
4be78d26 TM |
54 | const char *da_netid; |
55 | int da_transport; | |
875ae069 PT |
56 | }; |
57 | ||
58 | struct nfs4_pnfs_ds { | |
59 | struct list_head ds_node; /* nfs4_pnfs_dev_hlist dev_dslist */ | |
60 | char *ds_remotestr; /* comma sep list of addrs */ | |
61 | struct list_head ds_addrs; | |
62 | struct nfs_client *ds_clp; | |
a2a5dea7 | 63 | refcount_t ds_count; |
875ae069 PT |
64 | unsigned long ds_state; |
65 | #define NFS4DS_CONNECTING 0 /* ds is establishing connection */ | |
4541d16c FI |
66 | }; |
67 | ||
974cec8c | 68 | struct pnfs_layout_segment { |
566052c5 | 69 | struct list_head pls_list; |
a9bae566 | 70 | struct list_head pls_lc_list; |
a9901899 | 71 | struct list_head pls_commits; |
566052c5 | 72 | struct pnfs_layout_range pls_range; |
eba6dd69 | 73 | refcount_t pls_refcount; |
66755283 | 74 | u32 pls_seq; |
4541d16c | 75 | unsigned long pls_flags; |
566052c5 | 76 | struct pnfs_layout_hdr *pls_layout; |
974cec8c AA |
77 | }; |
78 | ||
64419a9b AA |
79 | enum pnfs_try_status { |
80 | PNFS_ATTEMPTED = 0, | |
81 | PNFS_NOT_ATTEMPTED = 1, | |
ceb11e13 | 82 | PNFS_TRY_AGAIN = 2, |
64419a9b AA |
83 | }; |
84 | ||
85e174ba RL |
85 | #ifdef CONFIG_NFS_V4_1 |
86 | ||
87 | #define LAYOUT_NFSV4_1_MODULE_PREFIX "nfs-layouttype4" | |
88 | ||
39280a5a PT |
89 | /* |
90 | * Default data server connection timeout and retrans vaules. | |
91 | * Set by module parameters dataserver_timeo and dataserver_retrans. | |
92 | */ | |
93 | #define NFS4_DEF_DS_TIMEO 600 /* in tenths of a second */ | |
94 | #define NFS4_DEF_DS_RETRANS 5 | |
b3dce6a2 | 95 | #define PNFS_DEVICE_RETRY_TIMEOUT (120*HZ) |
39280a5a | 96 | |
e5e94017 BH |
97 | enum { |
98 | NFS_LAYOUT_RO_FAILED = 0, /* get ro layout failed stop trying */ | |
99 | NFS_LAYOUT_RW_FAILED, /* get rw layout failed stop trying */ | |
43f1b3da | 100 | NFS_LAYOUT_BULK_RECALL, /* bulk recall affecting layout */ |
2370abda | 101 | NFS_LAYOUT_RETURN, /* layoutreturn in progress */ |
6604b203 | 102 | NFS_LAYOUT_RETURN_LOCK, /* Serialise layoutreturn */ |
2370abda | 103 | NFS_LAYOUT_RETURN_REQUESTED, /* Return this layout ASAP */ |
47abadef | 104 | NFS_LAYOUT_INVALID_STID, /* layout stateid id is invalid */ |
9bf87482 | 105 | NFS_LAYOUT_FIRST_LAYOUTGET, /* Serialize first layoutget */ |
5085607d | 106 | NFS_LAYOUT_INODE_FREEING, /* The inode is being freed */ |
cf6605d1 | 107 | NFS_LAYOUT_HASHED, /* The layout visible */ |
880265c7 | 108 | NFS_LAYOUT_DRAIN, |
e5e94017 BH |
109 | }; |
110 | ||
8a1636c4 | 111 | enum layoutdriver_policy_flags { |
88ac815c PT |
112 | /* Should the pNFS client commit and return the layout upon truncate to |
113 | * a smaller size */ | |
8a1636c4 | 114 | PNFS_LAYOUTRET_ON_SETATTR = 1 << 0, |
fe0fe835 | 115 | PNFS_LAYOUTRET_ON_ERROR = 1 << 1, |
612aa983 | 116 | PNFS_READ_WHOLE_PAGE = 1 << 2, |
f86c3ac5 | 117 | PNFS_LAYOUTGET_ON_OPEN = 1 << 3, |
8a1636c4 BH |
118 | }; |
119 | ||
1775bc34 BH |
120 | struct nfs4_deviceid_node; |
121 | ||
85e174ba RL |
122 | /* Per-layout driver specific registration structure */ |
123 | struct pnfs_layoutdriver_type { | |
02c35fca FI |
124 | struct list_head pnfs_tblid; |
125 | const u32 id; | |
126 | const char *name; | |
127 | struct module *owner; | |
8a1636c4 | 128 | unsigned flags; |
661373b1 | 129 | unsigned max_deviceinfo_size; |
28ced9a8 | 130 | unsigned max_layoutget_response; |
636fb9c8 | 131 | |
738fd0f3 BH |
132 | int (*set_layoutdriver) (struct nfs_server *, const struct nfs_fh *); |
133 | int (*clear_layoutdriver) (struct nfs_server *); | |
134 | ||
636fb9c8 BH |
135 | struct pnfs_layout_hdr * (*alloc_layout_hdr) (struct inode *inode, gfp_t gfp_flags); |
136 | void (*free_layout_hdr) (struct pnfs_layout_hdr *); | |
137 | ||
a75b9df9 | 138 | struct pnfs_layout_segment * (*alloc_lseg) (struct pnfs_layout_hdr *layoutid, struct nfs4_layoutget_res *lgr, gfp_t gfp_flags); |
b1f69b75 | 139 | void (*free_lseg) (struct pnfs_layout_segment *lseg); |
03772d2f TM |
140 | void (*add_lseg) (struct pnfs_layout_hdr *layoutid, |
141 | struct pnfs_layout_segment *lseg, | |
142 | struct list_head *free_me); | |
94ad1c80 | 143 | |
c88953d8 CH |
144 | void (*return_range) (struct pnfs_layout_hdr *lo, |
145 | struct pnfs_layout_range *range); | |
146 | ||
94ad1c80 | 147 | /* test for nfs page cache coalescing */ |
1751c363 TM |
148 | const struct nfs_pageio_ops *pg_read_ops; |
149 | const struct nfs_pageio_ops *pg_write_ops; | |
64419a9b | 150 | |
ea2cf228 | 151 | struct pnfs_ds_commit_info *(*get_ds_info) (struct inode *inode); |
a861a1e1 | 152 | |
5bb89b47 TM |
153 | int (*sync)(struct inode *inode, bool datasync); |
154 | ||
64419a9b AA |
155 | /* |
156 | * Return PNFS_ATTEMPTED to indicate the layout code has attempted | |
157 | * I/O, else return PNFS_NOT_ATTEMPTED to fall back to normal NFS | |
158 | */ | |
d45f60c6 WAA |
159 | enum pnfs_try_status (*read_pagelist)(struct nfs_pgio_header *); |
160 | enum pnfs_try_status (*write_pagelist)(struct nfs_pgio_header *, int); | |
1775bc34 BH |
161 | |
162 | void (*free_deviceid_node) (struct nfs4_deviceid_node *); | |
661373b1 CH |
163 | struct nfs4_deviceid_node * (*alloc_deviceid_node) |
164 | (struct nfs_server *server, struct pnfs_device *pdev, | |
165 | gfp_t gfp_flags); | |
04a55549 | 166 | |
287bd3e9 | 167 | int (*prepare_layoutreturn) (struct nfs4_layoutreturn_args *); |
ac7db726 | 168 | |
db29c089 | 169 | void (*cleanup_layoutcommit) (struct nfs4_layoutcommit_data *data); |
5f919c9f | 170 | int (*prepare_layoutcommit) (struct nfs4_layoutcommit_args *args); |
8733408d | 171 | int (*prepare_layoutstats) (struct nfs42_layoutstat_args *args); |
85e174ba RL |
172 | }; |
173 | ||
9c455a8c TM |
174 | struct pnfs_commit_ops { |
175 | void (*setup_ds_info)(struct pnfs_ds_commit_info *, | |
176 | struct pnfs_layout_segment *); | |
177 | void (*release_ds_info)(struct pnfs_ds_commit_info *, | |
178 | struct inode *inode); | |
179 | int (*commit_pagelist)(struct inode *inode, | |
180 | struct list_head *mds_pages, | |
181 | int how, | |
182 | struct nfs_commit_info *cinfo); | |
183 | void (*mark_request_commit) (struct nfs_page *req, | |
184 | struct pnfs_layout_segment *lseg, | |
185 | struct nfs_commit_info *cinfo, | |
186 | u32 ds_commit_idx); | |
187 | void (*clear_request_commit) (struct nfs_page *req, | |
188 | struct nfs_commit_info *cinfo); | |
189 | int (*scan_commit_lists) (struct nfs_commit_info *cinfo, | |
190 | int max); | |
191 | void (*recover_commit_reqs) (struct list_head *list, | |
192 | struct nfs_commit_info *cinfo); | |
193 | struct nfs_page * (*search_commit_reqs)(struct nfs_commit_info *cinfo, | |
194 | struct page *page); | |
195 | }; | |
196 | ||
e5e94017 | 197 | struct pnfs_layout_hdr { |
2b28a7be | 198 | refcount_t plh_refcount; |
82714bd1 | 199 | atomic_t plh_outstanding; /* number of RPCs out */ |
b7edfaa1 | 200 | struct list_head plh_layouts; /* other client layouts */ |
fd9a8d71 | 201 | struct list_head plh_bulk_destroy; |
b7edfaa1 | 202 | struct list_head plh_segs; /* layout segments list */ |
68f74479 | 203 | struct list_head plh_return_segs; /* invalid layout segments */ |
f7e8917a | 204 | unsigned long plh_block_lgets; /* block LAYOUTGET if >0 */ |
25c75333 | 205 | unsigned long plh_retry_timestamp; |
566052c5 | 206 | unsigned long plh_flags; |
82714bd1 TM |
207 | nfs4_stateid plh_stateid; |
208 | u32 plh_barrier; /* ignore lower seqids */ | |
3982a6a2 | 209 | u32 plh_return_seq; |
016256df | 210 | enum pnfs_iomode plh_return_iomode; |
acff5880 | 211 | loff_t plh_lwb; /* last write byte for layoutcommit */ |
a52458b4 | 212 | const struct cred *plh_lc_cred; /* layoutcommit cred */ |
b7edfaa1 | 213 | struct inode *plh_inode; |
cf6605d1 | 214 | struct rcu_head plh_rcu; |
e5e94017 BH |
215 | }; |
216 | ||
b1f69b75 AA |
217 | struct pnfs_device { |
218 | struct nfs4_deviceid dev_id; | |
219 | unsigned int layout_type; | |
220 | unsigned int mincount; | |
f1c097be | 221 | unsigned int maxcount; /* gdia_maxcount */ |
b1f69b75 | 222 | struct page **pages; |
b1f69b75 | 223 | unsigned int pgbase; |
f1c097be | 224 | unsigned int pglen; /* reply buffer length */ |
df52699e | 225 | unsigned char nocache : 1;/* May not be cached */ |
b1f69b75 AA |
226 | }; |
227 | ||
7f11d8d3 AA |
228 | #define NFS4_PNFS_GETDEVLIST_MAXNUM 16 |
229 | ||
230 | struct pnfs_devicelist { | |
231 | unsigned int eof; | |
232 | unsigned int num_devs; | |
233 | struct nfs4_deviceid dev_id[NFS4_PNFS_GETDEVLIST_MAXNUM]; | |
234 | }; | |
235 | ||
02c35fca FI |
236 | extern int pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *); |
237 | extern void pnfs_unregister_layoutdriver(struct pnfs_layoutdriver_type *); | |
7c9d845f TM |
238 | extern const struct pnfs_layoutdriver_type *pnfs_find_layoutdriver(u32 id); |
239 | extern void pnfs_put_layoutdriver(const struct pnfs_layoutdriver_type *ld); | |
02c35fca | 240 | |
b1f69b75 | 241 | /* nfs4proc.c */ |
dacb452d | 242 | extern size_t max_response_pages(struct nfs_server *server); |
b1f69b75 | 243 | extern int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
cd5875fe | 244 | struct pnfs_device *dev, |
a52458b4 | 245 | const struct cred *cred); |
dacb452d | 246 | extern struct pnfs_layout_segment* nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout); |
6c16605d | 247 | extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync); |
b1f69b75 AA |
248 | |
249 | /* pnfs.c */ | |
70c3bd2b | 250 | void pnfs_get_layout_hdr(struct pnfs_layout_hdr *lo); |
9369a431 | 251 | void pnfs_put_lseg(struct pnfs_layout_segment *lseg); |
1751c363 | 252 | |
ca440c38 | 253 | void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, struct nfs_fsinfo *); |
85e174ba | 254 | void unset_pnfs_layoutdriver(struct nfs_server *); |
b3230e80 | 255 | void pnfs_generic_pg_check_layout(struct nfs_pageio_descriptor *pgio); |
e1e54ab7 | 256 | void pnfs_generic_pg_check_range(struct nfs_pageio_descriptor *pgio, struct nfs_page *req); |
d8007d4d | 257 | void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *, struct nfs_page *); |
493292dd | 258 | int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc); |
6296556f PT |
259 | void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio, |
260 | struct nfs_page *req, u64 wb_size); | |
180bb5ec | 261 | void pnfs_generic_pg_cleanup(struct nfs_pageio_descriptor *); |
dce81290 | 262 | int pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc); |
b4fdac1a WAA |
263 | size_t pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, |
264 | struct nfs_page *prev, struct nfs_page *req); | |
1b0ae068 | 265 | void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg); |
a0b0a6e3 | 266 | struct pnfs_layout_segment *pnfs_layout_process(struct nfs4_layoutget *lgp); |
29a8bfe5 | 267 | void pnfs_layoutget_free(struct nfs4_layoutget *lgp); |
43f1b3da | 268 | void pnfs_free_lseg_list(struct list_head *tmp_list); |
e5e94017 | 269 | void pnfs_destroy_layout(struct nfs_inode *); |
b6d49ecd | 270 | void pnfs_destroy_layout_final(struct nfs_inode *); |
974cec8c | 271 | void pnfs_destroy_all_layouts(struct nfs_client *); |
fd9a8d71 TM |
272 | int pnfs_destroy_layouts_byfsid(struct nfs_client *clp, |
273 | struct nfs_fsid *fsid, | |
274 | bool is_recall); | |
275 | int pnfs_destroy_layouts_byclid(struct nfs_client *clp, | |
276 | bool is_recall); | |
30cb3ee2 | 277 | bool nfs4_layout_refresh_old_stateid(nfs4_stateid *dst, |
ecf84026 TM |
278 | struct pnfs_layout_range *dst_range, |
279 | struct inode *inode); | |
70c3bd2b | 280 | void pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo); |
43f1b3da FI |
281 | void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, |
282 | const nfs4_stateid *new, | |
59b56394 | 283 | const struct cred *cred, |
43f1b3da | 284 | bool update_barrier); |
49a85061 | 285 | int pnfs_mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo, |
43f1b3da | 286 | struct list_head *tmp_list, |
6d597e17 JL |
287 | const struct pnfs_layout_range *recall_range, |
288 | u32 seq); | |
10335556 | 289 | int pnfs_mark_matching_lsegs_return(struct pnfs_layout_hdr *lo, |
fc7ff367 | 290 | struct list_head *tmp_list, |
6d597e17 JL |
291 | const struct pnfs_layout_range *recall_range, |
292 | u32 seq); | |
5f46be04 TM |
293 | int pnfs_mark_layout_stateid_invalid(struct pnfs_layout_hdr *lo, |
294 | struct list_head *lseg_list); | |
1c5bd76d TM |
295 | bool pnfs_roc(struct inode *ino, |
296 | struct nfs4_layoutreturn_args *args, | |
297 | struct nfs4_layoutreturn_res *res, | |
a52458b4 | 298 | const struct cred *cred); |
078000d0 TM |
299 | int pnfs_roc_done(struct rpc_task *task, struct nfs4_layoutreturn_args **argpp, |
300 | struct nfs4_layoutreturn_res **respp, int *ret); | |
1c5bd76d TM |
301 | void pnfs_roc_release(struct nfs4_layoutreturn_args *args, |
302 | struct nfs4_layoutreturn_res *res, | |
303 | int ret); | |
500d701f | 304 | bool pnfs_wait_on_layoutreturn(struct inode *ino, struct rpc_task *task); |
67af7611 | 305 | void pnfs_set_layoutcommit(struct inode *, struct pnfs_layout_segment *, loff_t); |
db29c089 | 306 | void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data); |
ef311537 | 307 | int pnfs_layoutcommit_inode(struct inode *inode, bool sync); |
5bb89b47 TM |
308 | int pnfs_generic_sync(struct inode *inode, bool datasync); |
309 | int pnfs_nfs_generic_sync(struct inode *inode, bool datasync); | |
cbe82603 | 310 | int _pnfs_return_layout(struct inode *); |
24028672 | 311 | int pnfs_commit_and_return_layout(struct inode *); |
d45f60c6 WAA |
312 | void pnfs_ld_write_done(struct nfs_pgio_header *); |
313 | void pnfs_ld_read_done(struct nfs_pgio_header *); | |
563c53e7 | 314 | void pnfs_read_resend_pnfs(struct nfs_pgio_header *, unsigned int mirror_idx); |
7c24d948 AA |
315 | struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino, |
316 | struct nfs_open_context *ctx, | |
317 | loff_t pos, | |
318 | u64 count, | |
319 | enum pnfs_iomode iomode, | |
c7d73af2 | 320 | bool strict_iomode, |
7c24d948 | 321 | gfp_t gfp_flags); |
68f74479 | 322 | void pnfs_layoutreturn_free_lsegs(struct pnfs_layout_hdr *lo, |
2a974425 | 323 | const nfs4_stateid *arg_stateid, |
68f74479 | 324 | const struct pnfs_layout_range *range, |
68f74479 | 325 | const nfs4_stateid *stateid); |
e5e94017 | 326 | |
03772d2f TM |
327 | void pnfs_generic_layout_insert_lseg(struct pnfs_layout_hdr *lo, |
328 | struct pnfs_layout_segment *lseg, | |
329 | bool (*is_after)(const struct pnfs_layout_range *lseg_range, | |
330 | const struct pnfs_layout_range *old), | |
331 | bool (*do_merge)(struct pnfs_layout_segment *lseg, | |
332 | struct pnfs_layout_segment *old), | |
333 | struct list_head *free_me); | |
334 | ||
c47abcf8 | 335 | void nfs4_deviceid_mark_client_invalid(struct nfs_client *clp); |
53113ad3 WAA |
336 | int pnfs_read_done_resend_to_mds(struct nfs_pgio_header *); |
337 | int pnfs_write_done_resend_to_mds(struct nfs_pgio_header *); | |
82be417a | 338 | struct nfs4_threshold *pnfs_mdsthreshold_alloc(void); |
016256df PT |
339 | void pnfs_error_mark_layout_for_return(struct inode *inode, |
340 | struct pnfs_layout_segment *lseg); | |
b5fdf841 TM |
341 | void pnfs_layout_return_unused_byclid(struct nfs_client *clp, |
342 | enum pnfs_iomode iomode); | |
343 | ||
c47abcf8 AA |
344 | /* nfs4_deviceid_flags */ |
345 | enum { | |
346 | NFS_DEVICEID_INVALID = 0, /* set when MDS clientid recalled */ | |
1dfed273 | 347 | NFS_DEVICEID_UNAVAILABLE, /* device temporarily unavailable */ |
df52699e | 348 | NFS_DEVICEID_NOCACHE, /* device may not be cached */ |
c47abcf8 AA |
349 | }; |
350 | ||
a1eaecbc BH |
351 | /* pnfs_dev.c */ |
352 | struct nfs4_deviceid_node { | |
353 | struct hlist_node node; | |
9e3bd4e2 | 354 | struct hlist_node tmpnode; |
1775bc34 | 355 | const struct pnfs_layoutdriver_type *ld; |
a1eaecbc | 356 | const struct nfs_client *nfs_client; |
c47abcf8 | 357 | unsigned long flags; |
1dfed273 | 358 | unsigned long timestamp_unavailable; |
a1eaecbc | 359 | struct nfs4_deviceid deviceid; |
84a80f62 | 360 | struct rcu_head rcu; |
a1eaecbc BH |
361 | atomic_t ref; |
362 | }; | |
363 | ||
661373b1 CH |
364 | struct nfs4_deviceid_node * |
365 | nfs4_find_get_deviceid(struct nfs_server *server, | |
a52458b4 | 366 | const struct nfs4_deviceid *id, const struct cred *cred, |
661373b1 | 367 | gfp_t gfp_mask); |
35c8bb54 | 368 | void nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *); |
661373b1 | 369 | void nfs4_init_deviceid_node(struct nfs4_deviceid_node *, struct nfs_server *, |
a1eaecbc | 370 | const struct nfs4_deviceid *); |
a1eaecbc | 371 | bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *); |
76c66905 | 372 | void nfs4_mark_deviceid_available(struct nfs4_deviceid_node *node); |
1dfed273 TM |
373 | void nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node); |
374 | bool nfs4_test_deviceid_unavailable(struct nfs4_deviceid_node *node); | |
1775bc34 | 375 | void nfs4_deviceid_purge_client(const struct nfs_client *); |
a1eaecbc | 376 | |
f54bcf2e | 377 | /* pnfs_nfs.c */ |
d7242c46 TM |
378 | struct pnfs_commit_array *pnfs_alloc_commit_array(size_t n, gfp_t gfp_flags); |
379 | void pnfs_free_commit_array(struct pnfs_commit_array *p); | |
ba827c9a TM |
380 | struct pnfs_commit_array *pnfs_add_commit_array(struct pnfs_ds_commit_info *, |
381 | struct pnfs_commit_array *, | |
382 | struct pnfs_layout_segment *); | |
383 | ||
a9901899 TM |
384 | void pnfs_generic_ds_cinfo_release_lseg(struct pnfs_ds_commit_info *fl_cinfo, |
385 | struct pnfs_layout_segment *lseg); | |
386 | void pnfs_generic_ds_cinfo_destroy(struct pnfs_ds_commit_info *fl_cinfo); | |
d7242c46 | 387 | |
f54bcf2e TH |
388 | void pnfs_generic_clear_request_commit(struct nfs_page *req, |
389 | struct nfs_commit_info *cinfo); | |
390 | void pnfs_generic_commit_release(void *calldata); | |
391 | void pnfs_generic_prepare_to_resend_writes(struct nfs_commit_data *data); | |
392 | void pnfs_generic_rw_release(void *data); | |
393 | void pnfs_generic_recover_commit_reqs(struct list_head *dst, | |
394 | struct nfs_commit_info *cinfo); | |
fb6b53ba TM |
395 | struct nfs_page *pnfs_generic_search_commit_reqs(struct nfs_commit_info *cinfo, |
396 | struct page *page); | |
f54bcf2e TH |
397 | int pnfs_generic_commit_pagelist(struct inode *inode, |
398 | struct list_head *mds_pages, | |
399 | int how, | |
400 | struct nfs_commit_info *cinfo, | |
401 | int (*initiate_commit)(struct nfs_commit_data *data, | |
402 | int how)); | |
403 | int pnfs_generic_scan_commit_lists(struct nfs_commit_info *cinfo, int max); | |
404 | void pnfs_generic_write_commit_done(struct rpc_task *task, void *data); | |
875ae069 PT |
405 | void nfs4_pnfs_ds_put(struct nfs4_pnfs_ds *ds); |
406 | struct nfs4_pnfs_ds *nfs4_pnfs_ds_add(struct list_head *dsaddrs, | |
407 | gfp_t gfp_flags); | |
5f01d953 | 408 | void nfs4_pnfs_v3_ds_connect_unload(void); |
a33e4b03 | 409 | int nfs4_pnfs_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds, |
7405f9e1 | 410 | struct nfs4_deviceid_node *devid, unsigned int timeo, |
7d38de3f | 411 | unsigned int retrans, u32 version, u32 minor_version); |
6b7f3cf9 PT |
412 | struct nfs4_pnfs_ds_addr *nfs4_decode_mp_ds_addr(struct net *net, |
413 | struct xdr_stream *xdr, | |
414 | gfp_t gfp_flags); | |
338d00cf TH |
415 | void pnfs_layout_mark_request_commit(struct nfs_page *req, |
416 | struct pnfs_layout_segment *lseg, | |
417 | struct nfs_commit_info *cinfo, | |
418 | u32 ds_commit_idx); | |
2409a976 FI |
419 | void pnfs_lgopen_prepare(struct nfs4_opendata *data, |
420 | struct nfs_open_context *ctx); | |
421 | void pnfs_parse_lgopen(struct inode *ino, struct nfs4_layoutget *lgp, | |
422 | struct nfs_open_context *ctx); | |
30ae2412 | 423 | void nfs4_lgopen_release(struct nfs4_layoutget *lgp); |
f54bcf2e | 424 | |
40dd4b7a TM |
425 | static inline bool nfs_have_layout(struct inode *inode) |
426 | { | |
427 | return NFS_I(inode)->layout != NULL; | |
428 | } | |
429 | ||
45fcc7bc TM |
430 | static inline bool pnfs_layout_is_valid(const struct pnfs_layout_hdr *lo) |
431 | { | |
432 | return test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags) == 0; | |
433 | } | |
434 | ||
30ff0603 CH |
435 | static inline struct nfs4_deviceid_node * |
436 | nfs4_get_deviceid(struct nfs4_deviceid_node *d) | |
437 | { | |
438 | atomic_inc(&d->ref); | |
439 | return d; | |
440 | } | |
441 | ||
d684d2ae | 442 | static inline struct pnfs_layout_segment * |
9369a431 | 443 | pnfs_get_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
444 | { |
445 | if (lseg) { | |
eba6dd69 | 446 | refcount_inc(&lseg->pls_refcount); |
4e857c58 | 447 | smp_mb__after_atomic(); |
d684d2ae FI |
448 | } |
449 | return lseg; | |
450 | } | |
451 | ||
b20135d0 TM |
452 | static inline bool |
453 | pnfs_is_valid_lseg(struct pnfs_layout_segment *lseg) | |
454 | { | |
455 | return test_bit(NFS_LSEG_VALID, &lseg->pls_flags) != 0; | |
456 | } | |
457 | ||
e5e94017 BH |
458 | /* Return true if a layout driver is being used for this mountpoint */ |
459 | static inline int pnfs_enabled_sb(struct nfs_server *nfss) | |
460 | { | |
461 | return nfss->pnfs_curr_ld != NULL; | |
462 | } | |
85e174ba | 463 | |
a861a1e1 | 464 | static inline int |
ea2cf228 FI |
465 | pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, |
466 | struct nfs_commit_info *cinfo) | |
a861a1e1 | 467 | { |
9c455a8c TM |
468 | struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds; |
469 | ||
470 | if (fl_cinfo == NULL || fl_cinfo->ncommitting == 0) | |
a861a1e1 | 471 | return PNFS_NOT_ATTEMPTED; |
9c455a8c | 472 | return fl_cinfo->ops->commit_pagelist(inode, mds_pages, how, cinfo); |
ea2cf228 FI |
473 | } |
474 | ||
475 | static inline struct pnfs_ds_commit_info * | |
476 | pnfs_get_ds_info(struct inode *inode) | |
477 | { | |
478 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; | |
479 | ||
480 | if (ld == NULL || ld->get_ds_info == NULL) | |
481 | return NULL; | |
482 | return ld->get_ds_info(inode); | |
a861a1e1 FI |
483 | } |
484 | ||
9c455a8c TM |
485 | static inline void |
486 | pnfs_init_ds_commit_info_ops(struct pnfs_ds_commit_info *fl_cinfo, struct inode *inode) | |
487 | { | |
488 | struct pnfs_ds_commit_info *inode_cinfo = pnfs_get_ds_info(inode); | |
489 | if (inode_cinfo != NULL) | |
490 | fl_cinfo->ops = inode_cinfo->ops; | |
491 | } | |
492 | ||
c21e7168 TM |
493 | static inline void |
494 | pnfs_init_ds_commit_info(struct pnfs_ds_commit_info *fl_cinfo) | |
495 | { | |
496 | INIT_LIST_HEAD(&fl_cinfo->commits); | |
9c455a8c | 497 | fl_cinfo->ops = NULL; |
c21e7168 TM |
498 | } |
499 | ||
18f41296 TM |
500 | static inline void |
501 | pnfs_release_ds_info(struct pnfs_ds_commit_info *fl_cinfo, struct inode *inode) | |
502 | { | |
9c455a8c TM |
503 | if (fl_cinfo->ops != NULL && fl_cinfo->ops->release_ds_info != NULL) |
504 | fl_cinfo->ops->release_ds_info(fl_cinfo, inode); | |
18f41296 TM |
505 | } |
506 | ||
f54bcf2e TH |
507 | static inline void |
508 | pnfs_generic_mark_devid_invalid(struct nfs4_deviceid_node *node) | |
509 | { | |
510 | set_bit(NFS_DEVICEID_INVALID, &node->flags); | |
511 | } | |
512 | ||
8dd37758 | 513 | static inline bool |
ea2cf228 | 514 | pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, |
b57ff130 | 515 | struct nfs_commit_info *cinfo, u32 ds_commit_idx) |
a861a1e1 | 516 | { |
9c455a8c | 517 | struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds; |
a861a1e1 | 518 | |
f0caea88 | 519 | if (!lseg || !fl_cinfo->ops || !fl_cinfo->ops->mark_request_commit) |
8dd37758 | 520 | return false; |
9c455a8c | 521 | fl_cinfo->ops->mark_request_commit(req, lseg, cinfo, ds_commit_idx); |
8dd37758 | 522 | return true; |
a861a1e1 FI |
523 | } |
524 | ||
8dd37758 | 525 | static inline bool |
ea2cf228 | 526 | pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) |
a861a1e1 | 527 | { |
9c455a8c | 528 | struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds; |
d6d6dc7c | 529 | |
9c455a8c | 530 | if (!fl_cinfo || !fl_cinfo->ops || !fl_cinfo->ops->clear_request_commit) |
8dd37758 | 531 | return false; |
9c455a8c | 532 | fl_cinfo->ops->clear_request_commit(req, cinfo); |
8dd37758 | 533 | return true; |
d6d6dc7c FI |
534 | } |
535 | ||
536 | static inline int | |
ea2cf228 FI |
537 | pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, |
538 | int max) | |
d6d6dc7c | 539 | { |
9c455a8c TM |
540 | struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds; |
541 | ||
542 | if (!fl_cinfo || fl_cinfo->nwritten == 0) | |
d6d6dc7c | 543 | return 0; |
9c455a8c TM |
544 | return fl_cinfo->ops->scan_commit_lists(cinfo, max); |
545 | } | |
546 | ||
547 | static inline void | |
548 | pnfs_recover_commit_reqs(struct list_head *head, struct nfs_commit_info *cinfo) | |
549 | { | |
550 | struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds; | |
551 | ||
552 | if (fl_cinfo && fl_cinfo->nwritten != 0) | |
553 | fl_cinfo->ops->recover_commit_reqs(head, cinfo); | |
a861a1e1 FI |
554 | } |
555 | ||
02d1426c WAA |
556 | static inline struct nfs_page * |
557 | pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo, | |
558 | struct page *page) | |
559 | { | |
9c455a8c | 560 | struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds; |
02d1426c | 561 | |
9c455a8c | 562 | if (!fl_cinfo->ops || !fl_cinfo->ops->search_commit_reqs) |
02d1426c | 563 | return NULL; |
9c455a8c | 564 | return fl_cinfo->ops->search_commit_reqs(cinfo, page); |
02d1426c WAA |
565 | } |
566 | ||
8a1636c4 BH |
567 | /* Should the pNFS client commit and return the layout upon a setattr */ |
568 | static inline bool | |
569 | pnfs_ld_layoutret_on_setattr(struct inode *inode) | |
570 | { | |
571 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) | |
572 | return false; | |
573 | return NFS_SERVER(inode)->pnfs_curr_ld->flags & | |
574 | PNFS_LAYOUTRET_ON_SETATTR; | |
575 | } | |
576 | ||
612aa983 CH |
577 | static inline bool |
578 | pnfs_ld_read_whole_page(struct inode *inode) | |
579 | { | |
580 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) | |
581 | return false; | |
582 | return NFS_SERVER(inode)->pnfs_curr_ld->flags & PNFS_READ_WHOLE_PAGE; | |
583 | } | |
584 | ||
5bb89b47 TM |
585 | static inline int |
586 | pnfs_sync_inode(struct inode *inode, bool datasync) | |
587 | { | |
588 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) | |
589 | return 0; | |
590 | return NFS_SERVER(inode)->pnfs_curr_ld->sync(inode, datasync); | |
591 | } | |
592 | ||
d8c951c3 TM |
593 | static inline bool |
594 | pnfs_layoutcommit_outstanding(struct inode *inode) | |
595 | { | |
596 | struct nfs_inode *nfsi = NFS_I(inode); | |
597 | ||
598 | return test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags) != 0 || | |
599 | test_bit(NFS_INO_LAYOUTCOMMITTING, &nfsi->flags) != 0; | |
600 | } | |
601 | ||
cbe82603 BH |
602 | static inline int pnfs_return_layout(struct inode *ino) |
603 | { | |
604 | struct nfs_inode *nfsi = NFS_I(ino); | |
605 | struct nfs_server *nfss = NFS_SERVER(ino); | |
606 | ||
d78471d3 BC |
607 | if (pnfs_enabled_sb(nfss) && nfsi->layout) { |
608 | set_bit(NFS_LAYOUT_RETURN_REQUESTED, &nfsi->layout->plh_flags); | |
cbe82603 | 609 | return _pnfs_return_layout(ino); |
d78471d3 | 610 | } |
cbe82603 BH |
611 | |
612 | return 0; | |
613 | } | |
614 | ||
82be417a AA |
615 | static inline bool |
616 | pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, | |
617 | struct nfs_server *nfss) | |
618 | { | |
fb47ddc9 | 619 | return (dst && src && src->bm != 0 && nfss->pnfs_curr_ld && |
82be417a AA |
620 | nfss->pnfs_curr_ld->id == src->l_type); |
621 | } | |
622 | ||
0762ed2c TM |
623 | static inline u64 |
624 | pnfs_calc_offset_end(u64 offset, u64 len) | |
625 | { | |
626 | if (len == NFS4_MAX_UINT64 || len >= NFS4_MAX_UINT64 - offset) | |
627 | return NFS4_MAX_UINT64; | |
628 | return offset + len - 1; | |
629 | } | |
630 | ||
631 | static inline u64 | |
632 | pnfs_calc_offset_length(u64 offset, u64 end) | |
633 | { | |
634 | if (end == NFS4_MAX_UINT64 || end <= offset) | |
635 | return NFS4_MAX_UINT64; | |
636 | return 1 + end - offset; | |
637 | } | |
638 | ||
e144e539 TM |
639 | static inline void |
640 | pnfs_copy_range(struct pnfs_layout_range *dst, | |
641 | const struct pnfs_layout_range *src) | |
642 | { | |
643 | memcpy(dst, src, sizeof(*dst)); | |
644 | } | |
645 | ||
17822b20 TM |
646 | static inline u64 |
647 | pnfs_end_offset(u64 start, u64 len) | |
648 | { | |
649 | if (NFS4_MAX_UINT64 - start <= len) | |
650 | return NFS4_MAX_UINT64; | |
651 | return start + len; | |
652 | } | |
653 | ||
654 | /* | |
655 | * Are 2 ranges intersecting? | |
656 | * start1 end1 | |
657 | * [----------------------------------) | |
658 | * start2 end2 | |
659 | * [----------------) | |
660 | */ | |
661 | static inline bool | |
662 | pnfs_is_range_intersecting(u64 start1, u64 end1, u64 start2, u64 end2) | |
663 | { | |
664 | return (end1 == NFS4_MAX_UINT64 || start2 < end1) && | |
665 | (end2 == NFS4_MAX_UINT64 || start1 < end2); | |
666 | } | |
667 | ||
668 | static inline bool | |
669 | pnfs_lseg_range_intersecting(const struct pnfs_layout_range *l1, | |
670 | const struct pnfs_layout_range *l2) | |
671 | { | |
672 | u64 end1 = pnfs_end_offset(l1->offset, l1->length); | |
673 | u64 end2 = pnfs_end_offset(l2->offset, l2->length); | |
674 | ||
675 | return pnfs_is_range_intersecting(l1->offset, end1, l2->offset, end2); | |
676 | } | |
677 | ||
08cb5b0f BC |
678 | static inline bool |
679 | pnfs_lseg_request_intersecting(struct pnfs_layout_segment *lseg, struct nfs_page *req) | |
680 | { | |
681 | u64 seg_last = pnfs_end_offset(lseg->pls_range.offset, lseg->pls_range.length); | |
682 | u64 req_last = req_offset(req) + req->wb_bytes; | |
683 | ||
684 | return pnfs_is_range_intersecting(lseg->pls_range.offset, seg_last, | |
685 | req_offset(req), req_last); | |
686 | } | |
687 | ||
bbf58bf3 TM |
688 | extern unsigned int layoutstats_timer; |
689 | ||
6f00866d TM |
690 | #ifdef NFS_DEBUG |
691 | void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id); | |
692 | #else | |
693 | static inline void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id) | |
694 | { | |
695 | } | |
bbf58bf3 | 696 | |
6f00866d | 697 | #endif /* NFS_DEBUG */ |
85e174ba RL |
698 | #else /* CONFIG_NFS_V4_1 */ |
699 | ||
40dd4b7a TM |
700 | static inline bool nfs_have_layout(struct inode *inode) |
701 | { | |
702 | return false; | |
703 | } | |
704 | ||
974cec8c AA |
705 | static inline void pnfs_destroy_all_layouts(struct nfs_client *clp) |
706 | { | |
707 | } | |
708 | ||
e5e94017 BH |
709 | static inline void pnfs_destroy_layout(struct nfs_inode *nfsi) |
710 | { | |
711 | } | |
712 | ||
b6d49ecd TM |
713 | static inline void pnfs_destroy_layout_final(struct nfs_inode *nfsi) |
714 | { | |
715 | } | |
716 | ||
d684d2ae | 717 | static inline struct pnfs_layout_segment * |
9369a431 | 718 | pnfs_get_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
719 | { |
720 | return NULL; | |
721 | } | |
722 | ||
9369a431 | 723 | static inline void pnfs_put_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
724 | { |
725 | } | |
726 | ||
cbe82603 BH |
727 | static inline int pnfs_return_layout(struct inode *ino) |
728 | { | |
729 | return 0; | |
730 | } | |
731 | ||
24028672 TM |
732 | static inline int pnfs_commit_and_return_layout(struct inode *inode) |
733 | { | |
734 | return 0; | |
735 | } | |
736 | ||
8a1636c4 BH |
737 | static inline bool |
738 | pnfs_ld_layoutret_on_setattr(struct inode *inode) | |
739 | { | |
740 | return false; | |
741 | } | |
742 | ||
612aa983 CH |
743 | static inline bool |
744 | pnfs_ld_read_whole_page(struct inode *inode) | |
745 | { | |
746 | return false; | |
747 | } | |
748 | ||
5bb89b47 TM |
749 | static inline int |
750 | pnfs_sync_inode(struct inode *inode, bool datasync) | |
751 | { | |
752 | return 0; | |
753 | } | |
754 | ||
10b7e9ad TM |
755 | static inline bool |
756 | pnfs_layoutcommit_outstanding(struct inode *inode) | |
757 | { | |
758 | return false; | |
759 | } | |
760 | ||
761 | ||
f7e8917a | 762 | static inline bool |
1c5bd76d TM |
763 | pnfs_roc(struct inode *ino, |
764 | struct nfs4_layoutreturn_args *args, | |
765 | struct nfs4_layoutreturn_res *res, | |
a52458b4 | 766 | const struct cred *cred) |
f7e8917a FI |
767 | { |
768 | return false; | |
769 | } | |
770 | ||
287a9c55 | 771 | static inline int |
078000d0 | 772 | pnfs_roc_done(struct rpc_task *task, |
287a9c55 TM |
773 | struct nfs4_layoutreturn_args **argpp, |
774 | struct nfs4_layoutreturn_res **respp, | |
775 | int *ret) | |
776 | { | |
777 | return 0; | |
778 | } | |
779 | ||
f7e8917a | 780 | static inline void |
1c5bd76d TM |
781 | pnfs_roc_release(struct nfs4_layoutreturn_args *args, |
782 | struct nfs4_layoutreturn_res *res, | |
783 | int ret) | |
f7e8917a | 784 | { |
f7e8917a FI |
785 | } |
786 | ||
500d701f PT |
787 | static inline bool |
788 | pnfs_wait_on_layoutreturn(struct inode *ino, struct rpc_task *task) | |
789 | { | |
790 | return false; | |
791 | } | |
792 | ||
738fd0f3 | 793 | static inline void set_pnfs_layoutdriver(struct nfs_server *s, |
ca440c38 JL |
794 | const struct nfs_fh *mntfh, |
795 | struct nfs_fsinfo *fsinfo) | |
85e174ba RL |
796 | { |
797 | } | |
798 | ||
799 | static inline void unset_pnfs_layoutdriver(struct nfs_server *s) | |
800 | { | |
801 | } | |
802 | ||
a861a1e1 | 803 | static inline int |
ea2cf228 FI |
804 | pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, |
805 | struct nfs_commit_info *cinfo) | |
a861a1e1 FI |
806 | { |
807 | return PNFS_NOT_ATTEMPTED; | |
808 | } | |
809 | ||
ea2cf228 FI |
810 | static inline struct pnfs_ds_commit_info * |
811 | pnfs_get_ds_info(struct inode *inode) | |
812 | { | |
813 | return NULL; | |
814 | } | |
815 | ||
9c455a8c TM |
816 | static inline void |
817 | pnfs_init_ds_commit_info_ops(struct pnfs_ds_commit_info *fl_cinfo, struct inode *inode) | |
818 | { | |
819 | } | |
820 | ||
c21e7168 TM |
821 | static inline void |
822 | pnfs_init_ds_commit_info(struct pnfs_ds_commit_info *fl_cinfo) | |
823 | { | |
824 | } | |
825 | ||
18f41296 TM |
826 | static inline void |
827 | pnfs_release_ds_info(struct pnfs_ds_commit_info *fl_cinfo, struct inode *inode) | |
828 | { | |
829 | } | |
830 | ||
8dd37758 | 831 | static inline bool |
ea2cf228 | 832 | pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, |
b57ff130 | 833 | struct nfs_commit_info *cinfo, u32 ds_commit_idx) |
a861a1e1 | 834 | { |
8dd37758 | 835 | return false; |
a861a1e1 FI |
836 | } |
837 | ||
8dd37758 | 838 | static inline bool |
ea2cf228 | 839 | pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) |
a861a1e1 | 840 | { |
8dd37758 | 841 | return false; |
d6d6dc7c FI |
842 | } |
843 | ||
844 | static inline int | |
ea2cf228 FI |
845 | pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, |
846 | int max) | |
d6d6dc7c FI |
847 | { |
848 | return 0; | |
a861a1e1 FI |
849 | } |
850 | ||
9c455a8c TM |
851 | static inline void |
852 | pnfs_recover_commit_reqs(struct list_head *head, struct nfs_commit_info *cinfo) | |
853 | { | |
854 | } | |
855 | ||
02d1426c WAA |
856 | static inline struct nfs_page * |
857 | pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo, | |
858 | struct page *page) | |
859 | { | |
860 | return NULL; | |
861 | } | |
862 | ||
ef311537 | 863 | static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync) |
863a3c6c AA |
864 | { |
865 | return 0; | |
866 | } | |
1775bc34 | 867 | |
82be417a AA |
868 | static inline bool |
869 | pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, | |
870 | struct nfs_server *nfss) | |
871 | { | |
872 | return false; | |
873 | } | |
874 | ||
875 | static inline struct nfs4_threshold *pnfs_mdsthreshold_alloc(void) | |
876 | { | |
877 | return NULL; | |
878 | } | |
879 | ||
5f01d953 PT |
880 | static inline void nfs4_pnfs_v3_ds_connect_unload(void) |
881 | { | |
882 | } | |
883 | ||
30cb3ee2 | 884 | static inline bool nfs4_layout_refresh_old_stateid(nfs4_stateid *dst, |
ecf84026 | 885 | struct pnfs_layout_range *dst_range, |
7380020e TM |
886 | struct inode *inode) |
887 | { | |
888 | return false; | |
889 | } | |
2409a976 FI |
890 | |
891 | static inline void pnfs_lgopen_prepare(struct nfs4_opendata *data, | |
892 | struct nfs_open_context *ctx) | |
893 | { | |
894 | } | |
895 | ||
896 | static inline void pnfs_parse_lgopen(struct inode *ino, | |
897 | struct nfs4_layoutget *lgp, | |
898 | struct nfs_open_context *ctx) | |
899 | { | |
900 | } | |
30ae2412 FI |
901 | |
902 | static inline void nfs4_lgopen_release(struct nfs4_layoutget *lgp) | |
903 | { | |
904 | } | |
905 | ||
c8bf7073 TM |
906 | static inline bool pnfs_layout_is_valid(const struct pnfs_layout_hdr *lo) |
907 | { | |
908 | return false; | |
909 | } | |
910 | ||
85e174ba RL |
911 | #endif /* CONFIG_NFS_V4_1 */ |
912 | ||
865a7ecb | 913 | #if IS_ENABLED(CONFIG_NFS_V4_2) |
c8ad8894 | 914 | int pnfs_report_layoutstat(struct inode *inode, gfp_t gfp_flags); |
865a7ecb PT |
915 | #else |
916 | static inline int | |
c8ad8894 | 917 | pnfs_report_layoutstat(struct inode *inode, gfp_t gfp_flags) |
865a7ecb PT |
918 | { |
919 | return 0; | |
920 | } | |
921 | #endif | |
922 | ||
85e174ba | 923 | #endif /* FS_NFS_PNFS_H */ |