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 | |
6e7434ab | 38 | struct nfs4_exception; |
2409a976 FI |
39 | struct nfs4_opendata; |
40 | ||
4541d16c FI |
41 | enum { |
42 | NFS_LSEG_VALID = 0, /* cleared when lseg is recalled/returned */ | |
f7e8917a | 43 | NFS_LSEG_ROC, /* roc bit received from server */ |
a9bae566 | 44 | NFS_LSEG_LAYOUTCOMMIT, /* layoutcommit bit set for layoutcommit */ |
016256df | 45 | NFS_LSEG_LAYOUTRETURN, /* layoutreturn bit set for layoutreturn */ |
b3dce6a2 | 46 | NFS_LSEG_UNAVAILABLE, /* unavailable bit set for temporary problem */ |
4541d16c FI |
47 | }; |
48 | ||
875ae069 PT |
49 | /* Individual ip address */ |
50 | struct nfs4_pnfs_ds_addr { | |
51 | struct sockaddr_storage da_addr; | |
52 | size_t da_addrlen; | |
53 | struct list_head da_node; /* nfs4_pnfs_dev_hlist dev_dslist */ | |
54 | char *da_remotestr; /* human readable addr+port */ | |
4be78d26 TM |
55 | const char *da_netid; |
56 | int da_transport; | |
875ae069 PT |
57 | }; |
58 | ||
59 | struct nfs4_pnfs_ds { | |
60 | struct list_head ds_node; /* nfs4_pnfs_dev_hlist dev_dslist */ | |
61 | char *ds_remotestr; /* comma sep list of addrs */ | |
62 | struct list_head ds_addrs; | |
63 | struct nfs_client *ds_clp; | |
a2a5dea7 | 64 | refcount_t ds_count; |
875ae069 PT |
65 | unsigned long ds_state; |
66 | #define NFS4DS_CONNECTING 0 /* ds is establishing connection */ | |
4541d16c FI |
67 | }; |
68 | ||
974cec8c | 69 | struct pnfs_layout_segment { |
566052c5 | 70 | struct list_head pls_list; |
a9bae566 | 71 | struct list_head pls_lc_list; |
a9901899 | 72 | struct list_head pls_commits; |
566052c5 | 73 | struct pnfs_layout_range pls_range; |
eba6dd69 | 74 | refcount_t pls_refcount; |
66755283 | 75 | u32 pls_seq; |
4541d16c | 76 | unsigned long pls_flags; |
566052c5 | 77 | struct pnfs_layout_hdr *pls_layout; |
974cec8c AA |
78 | }; |
79 | ||
64419a9b AA |
80 | enum pnfs_try_status { |
81 | PNFS_ATTEMPTED = 0, | |
82 | PNFS_NOT_ATTEMPTED = 1, | |
ceb11e13 | 83 | PNFS_TRY_AGAIN = 2, |
64419a9b AA |
84 | }; |
85 | ||
85e174ba RL |
86 | #ifdef CONFIG_NFS_V4_1 |
87 | ||
88 | #define LAYOUT_NFSV4_1_MODULE_PREFIX "nfs-layouttype4" | |
89 | ||
39280a5a PT |
90 | /* |
91 | * Default data server connection timeout and retrans vaules. | |
92 | * Set by module parameters dataserver_timeo and dataserver_retrans. | |
93 | */ | |
94 | #define NFS4_DEF_DS_TIMEO 600 /* in tenths of a second */ | |
95 | #define NFS4_DEF_DS_RETRANS 5 | |
b3dce6a2 | 96 | #define PNFS_DEVICE_RETRY_TIMEOUT (120*HZ) |
39280a5a | 97 | |
e5e94017 BH |
98 | enum { |
99 | NFS_LAYOUT_RO_FAILED = 0, /* get ro layout failed stop trying */ | |
100 | NFS_LAYOUT_RW_FAILED, /* get rw layout failed stop trying */ | |
43f1b3da | 101 | NFS_LAYOUT_BULK_RECALL, /* bulk recall affecting layout */ |
2370abda | 102 | NFS_LAYOUT_RETURN, /* layoutreturn in progress */ |
6604b203 | 103 | NFS_LAYOUT_RETURN_LOCK, /* Serialise layoutreturn */ |
2370abda | 104 | NFS_LAYOUT_RETURN_REQUESTED, /* Return this layout ASAP */ |
47abadef | 105 | NFS_LAYOUT_INVALID_STID, /* layout stateid id is invalid */ |
9bf87482 | 106 | NFS_LAYOUT_FIRST_LAYOUTGET, /* Serialize first layoutget */ |
5085607d | 107 | NFS_LAYOUT_INODE_FREEING, /* The inode is being freed */ |
cf6605d1 | 108 | NFS_LAYOUT_HASHED, /* The layout visible */ |
880265c7 | 109 | NFS_LAYOUT_DRAIN, |
e5e94017 BH |
110 | }; |
111 | ||
8a1636c4 | 112 | enum layoutdriver_policy_flags { |
88ac815c PT |
113 | /* Should the pNFS client commit and return the layout upon truncate to |
114 | * a smaller size */ | |
8a1636c4 | 115 | PNFS_LAYOUTRET_ON_SETATTR = 1 << 0, |
fe0fe835 | 116 | PNFS_LAYOUTRET_ON_ERROR = 1 << 1, |
612aa983 | 117 | PNFS_READ_WHOLE_PAGE = 1 << 2, |
f86c3ac5 | 118 | PNFS_LAYOUTGET_ON_OPEN = 1 << 3, |
8a1636c4 BH |
119 | }; |
120 | ||
8adc8302 TM |
121 | enum pnfs_layout_destroy_mode { |
122 | PNFS_LAYOUT_INVALIDATE = 0, | |
123 | PNFS_LAYOUT_BULK_RETURN, | |
41d0a8ea | 124 | PNFS_LAYOUT_FILE_BULK_RETURN, |
8adc8302 TM |
125 | }; |
126 | ||
1775bc34 BH |
127 | struct nfs4_deviceid_node; |
128 | ||
85e174ba RL |
129 | /* Per-layout driver specific registration structure */ |
130 | struct pnfs_layoutdriver_type { | |
02c35fca FI |
131 | struct list_head pnfs_tblid; |
132 | const u32 id; | |
133 | const char *name; | |
134 | struct module *owner; | |
8a1636c4 | 135 | unsigned flags; |
28ced9a8 | 136 | unsigned max_layoutget_response; |
636fb9c8 | 137 | |
738fd0f3 BH |
138 | int (*set_layoutdriver) (struct nfs_server *, const struct nfs_fh *); |
139 | int (*clear_layoutdriver) (struct nfs_server *); | |
140 | ||
636fb9c8 BH |
141 | struct pnfs_layout_hdr * (*alloc_layout_hdr) (struct inode *inode, gfp_t gfp_flags); |
142 | void (*free_layout_hdr) (struct pnfs_layout_hdr *); | |
143 | ||
a75b9df9 | 144 | struct pnfs_layout_segment * (*alloc_lseg) (struct pnfs_layout_hdr *layoutid, struct nfs4_layoutget_res *lgr, gfp_t gfp_flags); |
b1f69b75 | 145 | void (*free_lseg) (struct pnfs_layout_segment *lseg); |
03772d2f TM |
146 | void (*add_lseg) (struct pnfs_layout_hdr *layoutid, |
147 | struct pnfs_layout_segment *lseg, | |
148 | struct list_head *free_me); | |
94ad1c80 | 149 | |
c88953d8 CH |
150 | void (*return_range) (struct pnfs_layout_hdr *lo, |
151 | struct pnfs_layout_range *range); | |
152 | ||
94ad1c80 | 153 | /* test for nfs page cache coalescing */ |
1751c363 TM |
154 | const struct nfs_pageio_ops *pg_read_ops; |
155 | const struct nfs_pageio_ops *pg_write_ops; | |
64419a9b | 156 | |
ea2cf228 | 157 | struct pnfs_ds_commit_info *(*get_ds_info) (struct inode *inode); |
a861a1e1 | 158 | |
5bb89b47 TM |
159 | int (*sync)(struct inode *inode, bool datasync); |
160 | ||
64419a9b AA |
161 | /* |
162 | * Return PNFS_ATTEMPTED to indicate the layout code has attempted | |
163 | * I/O, else return PNFS_NOT_ATTEMPTED to fall back to normal NFS | |
164 | */ | |
d45f60c6 WAA |
165 | enum pnfs_try_status (*read_pagelist)(struct nfs_pgio_header *); |
166 | enum pnfs_try_status (*write_pagelist)(struct nfs_pgio_header *, int); | |
1775bc34 BH |
167 | |
168 | void (*free_deviceid_node) (struct nfs4_deviceid_node *); | |
661373b1 CH |
169 | struct nfs4_deviceid_node * (*alloc_deviceid_node) |
170 | (struct nfs_server *server, struct pnfs_device *pdev, | |
171 | gfp_t gfp_flags); | |
04a55549 | 172 | |
287bd3e9 | 173 | int (*prepare_layoutreturn) (struct nfs4_layoutreturn_args *); |
ac7db726 | 174 | |
db29c089 | 175 | void (*cleanup_layoutcommit) (struct nfs4_layoutcommit_data *data); |
5f919c9f | 176 | int (*prepare_layoutcommit) (struct nfs4_layoutcommit_args *args); |
8733408d | 177 | int (*prepare_layoutstats) (struct nfs42_layoutstat_args *args); |
b739a5bd TM |
178 | |
179 | void (*cancel_io)(struct pnfs_layout_segment *lseg); | |
85e174ba RL |
180 | }; |
181 | ||
9c455a8c TM |
182 | struct pnfs_commit_ops { |
183 | void (*setup_ds_info)(struct pnfs_ds_commit_info *, | |
184 | struct pnfs_layout_segment *); | |
185 | void (*release_ds_info)(struct pnfs_ds_commit_info *, | |
186 | struct inode *inode); | |
187 | int (*commit_pagelist)(struct inode *inode, | |
188 | struct list_head *mds_pages, | |
189 | int how, | |
190 | struct nfs_commit_info *cinfo); | |
191 | void (*mark_request_commit) (struct nfs_page *req, | |
192 | struct pnfs_layout_segment *lseg, | |
193 | struct nfs_commit_info *cinfo, | |
194 | u32 ds_commit_idx); | |
195 | void (*clear_request_commit) (struct nfs_page *req, | |
196 | struct nfs_commit_info *cinfo); | |
197 | int (*scan_commit_lists) (struct nfs_commit_info *cinfo, | |
198 | int max); | |
199 | void (*recover_commit_reqs) (struct list_head *list, | |
200 | struct nfs_commit_info *cinfo); | |
9c455a8c TM |
201 | }; |
202 | ||
e5e94017 | 203 | struct pnfs_layout_hdr { |
2b28a7be | 204 | refcount_t plh_refcount; |
82714bd1 | 205 | atomic_t plh_outstanding; /* number of RPCs out */ |
b7edfaa1 | 206 | struct list_head plh_layouts; /* other client layouts */ |
fd9a8d71 | 207 | struct list_head plh_bulk_destroy; |
b7edfaa1 | 208 | struct list_head plh_segs; /* layout segments list */ |
68f74479 | 209 | struct list_head plh_return_segs; /* invalid layout segments */ |
f7e8917a | 210 | unsigned long plh_block_lgets; /* block LAYOUTGET if >0 */ |
25c75333 | 211 | unsigned long plh_retry_timestamp; |
566052c5 | 212 | unsigned long plh_flags; |
82714bd1 TM |
213 | nfs4_stateid plh_stateid; |
214 | u32 plh_barrier; /* ignore lower seqids */ | |
3982a6a2 | 215 | u32 plh_return_seq; |
016256df | 216 | enum pnfs_iomode plh_return_iomode; |
acff5880 | 217 | loff_t plh_lwb; /* last write byte for layoutcommit */ |
a52458b4 | 218 | const struct cred *plh_lc_cred; /* layoutcommit cred */ |
b7edfaa1 | 219 | struct inode *plh_inode; |
cf6605d1 | 220 | struct rcu_head plh_rcu; |
e5e94017 BH |
221 | }; |
222 | ||
b1f69b75 AA |
223 | struct pnfs_device { |
224 | struct nfs4_deviceid dev_id; | |
225 | unsigned int layout_type; | |
226 | unsigned int mincount; | |
f1c097be | 227 | unsigned int maxcount; /* gdia_maxcount */ |
b1f69b75 | 228 | struct page **pages; |
b1f69b75 | 229 | unsigned int pgbase; |
f1c097be | 230 | unsigned int pglen; /* reply buffer length */ |
df52699e | 231 | unsigned char nocache : 1;/* May not be cached */ |
b1f69b75 AA |
232 | }; |
233 | ||
7f11d8d3 AA |
234 | #define NFS4_PNFS_GETDEVLIST_MAXNUM 16 |
235 | ||
236 | struct pnfs_devicelist { | |
237 | unsigned int eof; | |
238 | unsigned int num_devs; | |
239 | struct nfs4_deviceid dev_id[NFS4_PNFS_GETDEVLIST_MAXNUM]; | |
240 | }; | |
241 | ||
02c35fca FI |
242 | extern int pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *); |
243 | extern void pnfs_unregister_layoutdriver(struct pnfs_layoutdriver_type *); | |
7c9d845f TM |
244 | extern const struct pnfs_layoutdriver_type *pnfs_find_layoutdriver(u32 id); |
245 | extern void pnfs_put_layoutdriver(const struct pnfs_layoutdriver_type *ld); | |
02c35fca | 246 | |
b1f69b75 | 247 | /* nfs4proc.c */ |
42375c2b TM |
248 | #define PNFS_FL_LAYOUTRETURN_ASYNC (1U << 0) |
249 | #define PNFS_FL_LAYOUTRETURN_PRIVILEGED (1U << 1) | |
250 | ||
dacb452d | 251 | extern size_t max_response_pages(struct nfs_server *server); |
b1f69b75 | 252 | extern int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
cd5875fe | 253 | struct pnfs_device *dev, |
a52458b4 | 254 | const struct cred *cred); |
6e7434ab TM |
255 | extern struct pnfs_layout_segment * |
256 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, | |
257 | struct nfs4_exception *exception); | |
42375c2b TM |
258 | extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, |
259 | unsigned int flags); | |
b1f69b75 AA |
260 | |
261 | /* pnfs.c */ | |
70c3bd2b | 262 | void pnfs_get_layout_hdr(struct pnfs_layout_hdr *lo); |
9369a431 | 263 | void pnfs_put_lseg(struct pnfs_layout_segment *lseg); |
1751c363 | 264 | |
ca440c38 | 265 | void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, struct nfs_fsinfo *); |
85e174ba | 266 | void unset_pnfs_layoutdriver(struct nfs_server *); |
a01b077a | 267 | void pnfs_generic_pg_check_layout(struct nfs_pageio_descriptor *pgio, struct nfs_page *req); |
d8007d4d | 268 | void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *, struct nfs_page *); |
493292dd | 269 | int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc); |
6296556f PT |
270 | void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio, |
271 | struct nfs_page *req, u64 wb_size); | |
180bb5ec | 272 | void pnfs_generic_pg_cleanup(struct nfs_pageio_descriptor *); |
dce81290 | 273 | int pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc); |
b4fdac1a WAA |
274 | size_t pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, |
275 | struct nfs_page *prev, struct nfs_page *req); | |
1b0ae068 | 276 | void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg); |
a0b0a6e3 | 277 | struct pnfs_layout_segment *pnfs_layout_process(struct nfs4_layoutget *lgp); |
29a8bfe5 | 278 | void pnfs_layoutget_free(struct nfs4_layoutget *lgp); |
43f1b3da | 279 | void pnfs_free_lseg_list(struct list_head *tmp_list); |
e5e94017 | 280 | void pnfs_destroy_layout(struct nfs_inode *); |
b6d49ecd | 281 | void pnfs_destroy_layout_final(struct nfs_inode *); |
974cec8c | 282 | void pnfs_destroy_all_layouts(struct nfs_client *); |
8adc8302 TM |
283 | int pnfs_layout_destroy_byfsid(struct nfs_client *clp, struct nfs_fsid *fsid, |
284 | enum pnfs_layout_destroy_mode mode); | |
285 | int pnfs_layout_destroy_byclid(struct nfs_client *clp, | |
286 | enum pnfs_layout_destroy_mode mode); | |
30cb3ee2 | 287 | bool nfs4_layout_refresh_old_stateid(nfs4_stateid *dst, |
ecf84026 TM |
288 | struct pnfs_layout_range *dst_range, |
289 | struct inode *inode); | |
70c3bd2b | 290 | void pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo); |
43f1b3da FI |
291 | void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, |
292 | const nfs4_stateid *new, | |
59b56394 | 293 | const struct cred *cred, |
43f1b3da | 294 | bool update_barrier); |
49a85061 | 295 | int pnfs_mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo, |
43f1b3da | 296 | struct list_head *tmp_list, |
6d597e17 JL |
297 | const struct pnfs_layout_range *recall_range, |
298 | u32 seq); | |
10335556 | 299 | int pnfs_mark_matching_lsegs_return(struct pnfs_layout_hdr *lo, |
fc7ff367 | 300 | struct list_head *tmp_list, |
6d597e17 JL |
301 | const struct pnfs_layout_range *recall_range, |
302 | u32 seq); | |
5f46be04 TM |
303 | int pnfs_mark_layout_stateid_invalid(struct pnfs_layout_hdr *lo, |
304 | struct list_head *lseg_list); | |
1c5bd76d TM |
305 | bool pnfs_roc(struct inode *ino, |
306 | struct nfs4_layoutreturn_args *args, | |
307 | struct nfs4_layoutreturn_res *res, | |
a52458b4 | 308 | const struct cred *cred); |
078000d0 TM |
309 | int pnfs_roc_done(struct rpc_task *task, struct nfs4_layoutreturn_args **argpp, |
310 | struct nfs4_layoutreturn_res **respp, int *ret); | |
1c5bd76d TM |
311 | void pnfs_roc_release(struct nfs4_layoutreturn_args *args, |
312 | struct nfs4_layoutreturn_res *res, | |
313 | int ret); | |
500d701f | 314 | bool pnfs_wait_on_layoutreturn(struct inode *ino, struct rpc_task *task); |
67af7611 | 315 | void pnfs_set_layoutcommit(struct inode *, struct pnfs_layout_segment *, loff_t); |
db29c089 | 316 | void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data); |
ef311537 | 317 | int pnfs_layoutcommit_inode(struct inode *inode, bool sync); |
5bb89b47 TM |
318 | int pnfs_generic_sync(struct inode *inode, bool datasync); |
319 | int pnfs_nfs_generic_sync(struct inode *inode, bool datasync); | |
cbe82603 | 320 | int _pnfs_return_layout(struct inode *); |
24028672 | 321 | int pnfs_commit_and_return_layout(struct inode *); |
d45f60c6 WAA |
322 | void pnfs_ld_write_done(struct nfs_pgio_header *); |
323 | void pnfs_ld_read_done(struct nfs_pgio_header *); | |
563c53e7 | 324 | void pnfs_read_resend_pnfs(struct nfs_pgio_header *, unsigned int mirror_idx); |
7c24d948 AA |
325 | struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino, |
326 | struct nfs_open_context *ctx, | |
327 | loff_t pos, | |
328 | u64 count, | |
329 | enum pnfs_iomode iomode, | |
c7d73af2 | 330 | bool strict_iomode, |
7c24d948 | 331 | gfp_t gfp_flags); |
bbbff6d5 TM |
332 | void pnfs_layoutreturn_retry_later(struct pnfs_layout_hdr *lo, |
333 | const nfs4_stateid *arg_stateid, | |
334 | const struct pnfs_layout_range *range); | |
68f74479 | 335 | void pnfs_layoutreturn_free_lsegs(struct pnfs_layout_hdr *lo, |
2a974425 | 336 | const nfs4_stateid *arg_stateid, |
68f74479 | 337 | const struct pnfs_layout_range *range, |
68f74479 | 338 | const nfs4_stateid *stateid); |
e5e94017 | 339 | |
03772d2f TM |
340 | void pnfs_generic_layout_insert_lseg(struct pnfs_layout_hdr *lo, |
341 | struct pnfs_layout_segment *lseg, | |
342 | bool (*is_after)(const struct pnfs_layout_range *lseg_range, | |
343 | const struct pnfs_layout_range *old), | |
344 | bool (*do_merge)(struct pnfs_layout_segment *lseg, | |
345 | struct pnfs_layout_segment *old), | |
346 | struct list_head *free_me); | |
347 | ||
c47abcf8 | 348 | void nfs4_deviceid_mark_client_invalid(struct nfs_client *clp); |
53113ad3 WAA |
349 | int pnfs_read_done_resend_to_mds(struct nfs_pgio_header *); |
350 | int pnfs_write_done_resend_to_mds(struct nfs_pgio_header *); | |
82be417a | 351 | struct nfs4_threshold *pnfs_mdsthreshold_alloc(void); |
016256df PT |
352 | void pnfs_error_mark_layout_for_return(struct inode *inode, |
353 | struct pnfs_layout_segment *lseg); | |
b5fdf841 TM |
354 | void pnfs_layout_return_unused_byclid(struct nfs_client *clp, |
355 | enum pnfs_iomode iomode); | |
5468fc82 | 356 | int pnfs_layout_handle_reboot(struct nfs_client *clp); |
b5fdf841 | 357 | |
c47abcf8 AA |
358 | /* nfs4_deviceid_flags */ |
359 | enum { | |
360 | NFS_DEVICEID_INVALID = 0, /* set when MDS clientid recalled */ | |
1dfed273 | 361 | NFS_DEVICEID_UNAVAILABLE, /* device temporarily unavailable */ |
df52699e | 362 | NFS_DEVICEID_NOCACHE, /* device may not be cached */ |
c47abcf8 AA |
363 | }; |
364 | ||
a1eaecbc BH |
365 | /* pnfs_dev.c */ |
366 | struct nfs4_deviceid_node { | |
367 | struct hlist_node node; | |
9e3bd4e2 | 368 | struct hlist_node tmpnode; |
1775bc34 | 369 | const struct pnfs_layoutdriver_type *ld; |
a1eaecbc | 370 | const struct nfs_client *nfs_client; |
c47abcf8 | 371 | unsigned long flags; |
1dfed273 | 372 | unsigned long timestamp_unavailable; |
a1eaecbc | 373 | struct nfs4_deviceid deviceid; |
84a80f62 | 374 | struct rcu_head rcu; |
a1eaecbc BH |
375 | atomic_t ref; |
376 | }; | |
377 | ||
661373b1 CH |
378 | struct nfs4_deviceid_node * |
379 | nfs4_find_get_deviceid(struct nfs_server *server, | |
a52458b4 | 380 | const struct nfs4_deviceid *id, const struct cred *cred, |
661373b1 | 381 | gfp_t gfp_mask); |
35c8bb54 | 382 | void nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *); |
661373b1 | 383 | void nfs4_init_deviceid_node(struct nfs4_deviceid_node *, struct nfs_server *, |
a1eaecbc | 384 | const struct nfs4_deviceid *); |
a1eaecbc | 385 | bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *); |
76c66905 | 386 | void nfs4_mark_deviceid_available(struct nfs4_deviceid_node *node); |
1dfed273 TM |
387 | void nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node); |
388 | bool nfs4_test_deviceid_unavailable(struct nfs4_deviceid_node *node); | |
1775bc34 | 389 | void nfs4_deviceid_purge_client(const struct nfs_client *); |
a1eaecbc | 390 | |
f54bcf2e | 391 | /* pnfs_nfs.c */ |
d7242c46 TM |
392 | struct pnfs_commit_array *pnfs_alloc_commit_array(size_t n, gfp_t gfp_flags); |
393 | void pnfs_free_commit_array(struct pnfs_commit_array *p); | |
ba827c9a TM |
394 | struct pnfs_commit_array *pnfs_add_commit_array(struct pnfs_ds_commit_info *, |
395 | struct pnfs_commit_array *, | |
396 | struct pnfs_layout_segment *); | |
397 | ||
a9901899 TM |
398 | void pnfs_generic_ds_cinfo_release_lseg(struct pnfs_ds_commit_info *fl_cinfo, |
399 | struct pnfs_layout_segment *lseg); | |
400 | void pnfs_generic_ds_cinfo_destroy(struct pnfs_ds_commit_info *fl_cinfo); | |
d7242c46 | 401 | |
f54bcf2e TH |
402 | void pnfs_generic_clear_request_commit(struct nfs_page *req, |
403 | struct nfs_commit_info *cinfo); | |
404 | void pnfs_generic_commit_release(void *calldata); | |
405 | void pnfs_generic_prepare_to_resend_writes(struct nfs_commit_data *data); | |
406 | void pnfs_generic_rw_release(void *data); | |
407 | void pnfs_generic_recover_commit_reqs(struct list_head *dst, | |
408 | struct nfs_commit_info *cinfo); | |
409 | int pnfs_generic_commit_pagelist(struct inode *inode, | |
410 | struct list_head *mds_pages, | |
411 | int how, | |
412 | struct nfs_commit_info *cinfo, | |
413 | int (*initiate_commit)(struct nfs_commit_data *data, | |
414 | int how)); | |
415 | int pnfs_generic_scan_commit_lists(struct nfs_commit_info *cinfo, int max); | |
416 | void pnfs_generic_write_commit_done(struct rpc_task *task, void *data); | |
875ae069 PT |
417 | void nfs4_pnfs_ds_put(struct nfs4_pnfs_ds *ds); |
418 | struct nfs4_pnfs_ds *nfs4_pnfs_ds_add(struct list_head *dsaddrs, | |
419 | gfp_t gfp_flags); | |
5f01d953 | 420 | void nfs4_pnfs_v3_ds_connect_unload(void); |
a33e4b03 | 421 | int nfs4_pnfs_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds, |
7405f9e1 | 422 | struct nfs4_deviceid_node *devid, unsigned int timeo, |
7d38de3f | 423 | unsigned int retrans, u32 version, u32 minor_version); |
6b7f3cf9 PT |
424 | struct nfs4_pnfs_ds_addr *nfs4_decode_mp_ds_addr(struct net *net, |
425 | struct xdr_stream *xdr, | |
426 | gfp_t gfp_flags); | |
338d00cf TH |
427 | void pnfs_layout_mark_request_commit(struct nfs_page *req, |
428 | struct pnfs_layout_segment *lseg, | |
429 | struct nfs_commit_info *cinfo, | |
430 | u32 ds_commit_idx); | |
2409a976 FI |
431 | void pnfs_lgopen_prepare(struct nfs4_opendata *data, |
432 | struct nfs_open_context *ctx); | |
433 | void pnfs_parse_lgopen(struct inode *ino, struct nfs4_layoutget *lgp, | |
434 | struct nfs_open_context *ctx); | |
30ae2412 | 435 | void nfs4_lgopen_release(struct nfs4_layoutget *lgp); |
f54bcf2e | 436 | |
40dd4b7a TM |
437 | static inline bool nfs_have_layout(struct inode *inode) |
438 | { | |
439 | return NFS_I(inode)->layout != NULL; | |
440 | } | |
441 | ||
45fcc7bc TM |
442 | static inline bool pnfs_layout_is_valid(const struct pnfs_layout_hdr *lo) |
443 | { | |
444 | return test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags) == 0; | |
445 | } | |
446 | ||
30ff0603 CH |
447 | static inline struct nfs4_deviceid_node * |
448 | nfs4_get_deviceid(struct nfs4_deviceid_node *d) | |
449 | { | |
450 | atomic_inc(&d->ref); | |
451 | return d; | |
452 | } | |
453 | ||
d684d2ae | 454 | static inline struct pnfs_layout_segment * |
9369a431 | 455 | pnfs_get_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
456 | { |
457 | if (lseg) { | |
eba6dd69 | 458 | refcount_inc(&lseg->pls_refcount); |
4e857c58 | 459 | smp_mb__after_atomic(); |
d684d2ae FI |
460 | } |
461 | return lseg; | |
462 | } | |
463 | ||
b20135d0 TM |
464 | static inline bool |
465 | pnfs_is_valid_lseg(struct pnfs_layout_segment *lseg) | |
466 | { | |
467 | return test_bit(NFS_LSEG_VALID, &lseg->pls_flags) != 0; | |
468 | } | |
469 | ||
e5e94017 BH |
470 | /* Return true if a layout driver is being used for this mountpoint */ |
471 | static inline int pnfs_enabled_sb(struct nfs_server *nfss) | |
472 | { | |
473 | return nfss->pnfs_curr_ld != NULL; | |
474 | } | |
85e174ba | 475 | |
a861a1e1 | 476 | static inline int |
ea2cf228 FI |
477 | pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, |
478 | struct nfs_commit_info *cinfo) | |
a861a1e1 | 479 | { |
9c455a8c TM |
480 | struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds; |
481 | ||
482 | if (fl_cinfo == NULL || fl_cinfo->ncommitting == 0) | |
a861a1e1 | 483 | return PNFS_NOT_ATTEMPTED; |
9c455a8c | 484 | return fl_cinfo->ops->commit_pagelist(inode, mds_pages, how, cinfo); |
ea2cf228 FI |
485 | } |
486 | ||
487 | static inline struct pnfs_ds_commit_info * | |
488 | pnfs_get_ds_info(struct inode *inode) | |
489 | { | |
490 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; | |
491 | ||
492 | if (ld == NULL || ld->get_ds_info == NULL) | |
493 | return NULL; | |
494 | return ld->get_ds_info(inode); | |
a861a1e1 FI |
495 | } |
496 | ||
9c455a8c TM |
497 | static inline void |
498 | pnfs_init_ds_commit_info_ops(struct pnfs_ds_commit_info *fl_cinfo, struct inode *inode) | |
499 | { | |
500 | struct pnfs_ds_commit_info *inode_cinfo = pnfs_get_ds_info(inode); | |
501 | if (inode_cinfo != NULL) | |
502 | fl_cinfo->ops = inode_cinfo->ops; | |
503 | } | |
504 | ||
c21e7168 TM |
505 | static inline void |
506 | pnfs_init_ds_commit_info(struct pnfs_ds_commit_info *fl_cinfo) | |
507 | { | |
508 | INIT_LIST_HEAD(&fl_cinfo->commits); | |
9c455a8c | 509 | fl_cinfo->ops = NULL; |
c21e7168 TM |
510 | } |
511 | ||
18f41296 TM |
512 | static inline void |
513 | pnfs_release_ds_info(struct pnfs_ds_commit_info *fl_cinfo, struct inode *inode) | |
514 | { | |
9c455a8c TM |
515 | if (fl_cinfo->ops != NULL && fl_cinfo->ops->release_ds_info != NULL) |
516 | fl_cinfo->ops->release_ds_info(fl_cinfo, inode); | |
18f41296 TM |
517 | } |
518 | ||
f54bcf2e TH |
519 | static inline void |
520 | pnfs_generic_mark_devid_invalid(struct nfs4_deviceid_node *node) | |
521 | { | |
522 | set_bit(NFS_DEVICEID_INVALID, &node->flags); | |
523 | } | |
524 | ||
8dd37758 | 525 | static inline bool |
ea2cf228 | 526 | pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, |
b57ff130 | 527 | struct nfs_commit_info *cinfo, u32 ds_commit_idx) |
a861a1e1 | 528 | { |
9c455a8c | 529 | struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds; |
a861a1e1 | 530 | |
f0caea88 | 531 | if (!lseg || !fl_cinfo->ops || !fl_cinfo->ops->mark_request_commit) |
8dd37758 | 532 | return false; |
9c455a8c | 533 | fl_cinfo->ops->mark_request_commit(req, lseg, cinfo, ds_commit_idx); |
8dd37758 | 534 | return true; |
a861a1e1 FI |
535 | } |
536 | ||
8dd37758 | 537 | static inline bool |
ea2cf228 | 538 | pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) |
a861a1e1 | 539 | { |
9c455a8c | 540 | struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds; |
d6d6dc7c | 541 | |
9c455a8c | 542 | if (!fl_cinfo || !fl_cinfo->ops || !fl_cinfo->ops->clear_request_commit) |
8dd37758 | 543 | return false; |
9c455a8c | 544 | fl_cinfo->ops->clear_request_commit(req, cinfo); |
8dd37758 | 545 | return true; |
d6d6dc7c FI |
546 | } |
547 | ||
548 | static inline int | |
ea2cf228 FI |
549 | pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, |
550 | int max) | |
d6d6dc7c | 551 | { |
9c455a8c TM |
552 | struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds; |
553 | ||
554 | if (!fl_cinfo || fl_cinfo->nwritten == 0) | |
d6d6dc7c | 555 | return 0; |
9c455a8c TM |
556 | return fl_cinfo->ops->scan_commit_lists(cinfo, max); |
557 | } | |
558 | ||
559 | static inline void | |
560 | pnfs_recover_commit_reqs(struct list_head *head, struct nfs_commit_info *cinfo) | |
561 | { | |
562 | struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds; | |
563 | ||
564 | if (fl_cinfo && fl_cinfo->nwritten != 0) | |
565 | fl_cinfo->ops->recover_commit_reqs(head, cinfo); | |
a861a1e1 FI |
566 | } |
567 | ||
8a1636c4 BH |
568 | /* Should the pNFS client commit and return the layout upon a setattr */ |
569 | static inline bool | |
570 | pnfs_ld_layoutret_on_setattr(struct inode *inode) | |
571 | { | |
572 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) | |
573 | return false; | |
574 | return NFS_SERVER(inode)->pnfs_curr_ld->flags & | |
575 | PNFS_LAYOUTRET_ON_SETATTR; | |
576 | } | |
577 | ||
612aa983 CH |
578 | static inline bool |
579 | pnfs_ld_read_whole_page(struct inode *inode) | |
580 | { | |
581 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) | |
582 | return false; | |
583 | return NFS_SERVER(inode)->pnfs_curr_ld->flags & PNFS_READ_WHOLE_PAGE; | |
584 | } | |
585 | ||
5bb89b47 TM |
586 | static inline int |
587 | pnfs_sync_inode(struct inode *inode, bool datasync) | |
588 | { | |
589 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) | |
590 | return 0; | |
591 | return NFS_SERVER(inode)->pnfs_curr_ld->sync(inode, datasync); | |
592 | } | |
593 | ||
d8c951c3 TM |
594 | static inline bool |
595 | pnfs_layoutcommit_outstanding(struct inode *inode) | |
596 | { | |
597 | struct nfs_inode *nfsi = NFS_I(inode); | |
598 | ||
599 | return test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags) != 0 || | |
600 | test_bit(NFS_INO_LAYOUTCOMMITTING, &nfsi->flags) != 0; | |
601 | } | |
602 | ||
cbe82603 BH |
603 | static inline int pnfs_return_layout(struct inode *ino) |
604 | { | |
605 | struct nfs_inode *nfsi = NFS_I(ino); | |
606 | struct nfs_server *nfss = NFS_SERVER(ino); | |
607 | ||
d78471d3 BC |
608 | if (pnfs_enabled_sb(nfss) && nfsi->layout) { |
609 | set_bit(NFS_LAYOUT_RETURN_REQUESTED, &nfsi->layout->plh_flags); | |
cbe82603 | 610 | return _pnfs_return_layout(ino); |
d78471d3 | 611 | } |
cbe82603 BH |
612 | |
613 | return 0; | |
614 | } | |
615 | ||
82be417a AA |
616 | static inline bool |
617 | pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, | |
618 | struct nfs_server *nfss) | |
619 | { | |
fb47ddc9 | 620 | return (dst && src && src->bm != 0 && nfss->pnfs_curr_ld && |
82be417a AA |
621 | nfss->pnfs_curr_ld->id == src->l_type); |
622 | } | |
623 | ||
0762ed2c TM |
624 | static inline u64 |
625 | pnfs_calc_offset_end(u64 offset, u64 len) | |
626 | { | |
627 | if (len == NFS4_MAX_UINT64 || len >= NFS4_MAX_UINT64 - offset) | |
628 | return NFS4_MAX_UINT64; | |
629 | return offset + len - 1; | |
630 | } | |
631 | ||
632 | static inline u64 | |
633 | pnfs_calc_offset_length(u64 offset, u64 end) | |
634 | { | |
635 | if (end == NFS4_MAX_UINT64 || end <= offset) | |
636 | return NFS4_MAX_UINT64; | |
637 | return 1 + end - offset; | |
638 | } | |
639 | ||
e144e539 TM |
640 | static inline void |
641 | pnfs_copy_range(struct pnfs_layout_range *dst, | |
642 | const struct pnfs_layout_range *src) | |
643 | { | |
644 | memcpy(dst, src, sizeof(*dst)); | |
645 | } | |
646 | ||
17822b20 TM |
647 | static inline u64 |
648 | pnfs_end_offset(u64 start, u64 len) | |
649 | { | |
650 | if (NFS4_MAX_UINT64 - start <= len) | |
651 | return NFS4_MAX_UINT64; | |
652 | return start + len; | |
653 | } | |
654 | ||
655 | /* | |
656 | * Are 2 ranges intersecting? | |
657 | * start1 end1 | |
658 | * [----------------------------------) | |
659 | * start2 end2 | |
660 | * [----------------) | |
661 | */ | |
662 | static inline bool | |
663 | pnfs_is_range_intersecting(u64 start1, u64 end1, u64 start2, u64 end2) | |
664 | { | |
665 | return (end1 == NFS4_MAX_UINT64 || start2 < end1) && | |
666 | (end2 == NFS4_MAX_UINT64 || start1 < end2); | |
667 | } | |
668 | ||
669 | static inline bool | |
670 | pnfs_lseg_range_intersecting(const struct pnfs_layout_range *l1, | |
671 | const struct pnfs_layout_range *l2) | |
672 | { | |
673 | u64 end1 = pnfs_end_offset(l1->offset, l1->length); | |
674 | u64 end2 = pnfs_end_offset(l2->offset, l2->length); | |
675 | ||
676 | return pnfs_is_range_intersecting(l1->offset, end1, l2->offset, end2); | |
677 | } | |
678 | ||
08cb5b0f BC |
679 | static inline bool |
680 | pnfs_lseg_request_intersecting(struct pnfs_layout_segment *lseg, struct nfs_page *req) | |
681 | { | |
682 | u64 seg_last = pnfs_end_offset(lseg->pls_range.offset, lseg->pls_range.length); | |
683 | u64 req_last = req_offset(req) + req->wb_bytes; | |
684 | ||
685 | return pnfs_is_range_intersecting(lseg->pls_range.offset, seg_last, | |
686 | req_offset(req), req_last); | |
687 | } | |
688 | ||
b739a5bd TM |
689 | static inline void pnfs_lseg_cancel_io(struct nfs_server *server, |
690 | struct pnfs_layout_segment *lseg) | |
691 | { | |
692 | if (server->pnfs_curr_ld->cancel_io) | |
693 | server->pnfs_curr_ld->cancel_io(lseg); | |
694 | } | |
695 | ||
bbf58bf3 TM |
696 | extern unsigned int layoutstats_timer; |
697 | ||
6f00866d TM |
698 | #ifdef NFS_DEBUG |
699 | void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id); | |
700 | #else | |
701 | static inline void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id) | |
702 | { | |
703 | } | |
bbf58bf3 | 704 | |
6f00866d | 705 | #endif /* NFS_DEBUG */ |
85e174ba RL |
706 | #else /* CONFIG_NFS_V4_1 */ |
707 | ||
40dd4b7a TM |
708 | static inline bool nfs_have_layout(struct inode *inode) |
709 | { | |
710 | return false; | |
711 | } | |
712 | ||
974cec8c AA |
713 | static inline void pnfs_destroy_all_layouts(struct nfs_client *clp) |
714 | { | |
715 | } | |
716 | ||
e5e94017 BH |
717 | static inline void pnfs_destroy_layout(struct nfs_inode *nfsi) |
718 | { | |
719 | } | |
720 | ||
b6d49ecd TM |
721 | static inline void pnfs_destroy_layout_final(struct nfs_inode *nfsi) |
722 | { | |
723 | } | |
724 | ||
5468fc82 TM |
725 | static inline int pnfs_layout_handle_reboot(struct nfs_client *clp) |
726 | { | |
727 | return 0; | |
728 | } | |
729 | ||
d684d2ae | 730 | static inline struct pnfs_layout_segment * |
9369a431 | 731 | pnfs_get_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
732 | { |
733 | return NULL; | |
734 | } | |
735 | ||
9369a431 | 736 | static inline void pnfs_put_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
737 | { |
738 | } | |
739 | ||
cbe82603 BH |
740 | static inline int pnfs_return_layout(struct inode *ino) |
741 | { | |
742 | return 0; | |
743 | } | |
744 | ||
24028672 TM |
745 | static inline int pnfs_commit_and_return_layout(struct inode *inode) |
746 | { | |
747 | return 0; | |
748 | } | |
749 | ||
8a1636c4 BH |
750 | static inline bool |
751 | pnfs_ld_layoutret_on_setattr(struct inode *inode) | |
752 | { | |
753 | return false; | |
754 | } | |
755 | ||
612aa983 CH |
756 | static inline bool |
757 | pnfs_ld_read_whole_page(struct inode *inode) | |
758 | { | |
759 | return false; | |
760 | } | |
761 | ||
5bb89b47 TM |
762 | static inline int |
763 | pnfs_sync_inode(struct inode *inode, bool datasync) | |
764 | { | |
765 | return 0; | |
766 | } | |
767 | ||
10b7e9ad TM |
768 | static inline bool |
769 | pnfs_layoutcommit_outstanding(struct inode *inode) | |
770 | { | |
771 | return false; | |
772 | } | |
773 | ||
774 | ||
f7e8917a | 775 | static inline bool |
1c5bd76d TM |
776 | pnfs_roc(struct inode *ino, |
777 | struct nfs4_layoutreturn_args *args, | |
778 | struct nfs4_layoutreturn_res *res, | |
a52458b4 | 779 | const struct cred *cred) |
f7e8917a FI |
780 | { |
781 | return false; | |
782 | } | |
783 | ||
287a9c55 | 784 | static inline int |
078000d0 | 785 | pnfs_roc_done(struct rpc_task *task, |
287a9c55 TM |
786 | struct nfs4_layoutreturn_args **argpp, |
787 | struct nfs4_layoutreturn_res **respp, | |
788 | int *ret) | |
789 | { | |
790 | return 0; | |
791 | } | |
792 | ||
f7e8917a | 793 | static inline void |
1c5bd76d TM |
794 | pnfs_roc_release(struct nfs4_layoutreturn_args *args, |
795 | struct nfs4_layoutreturn_res *res, | |
796 | int ret) | |
f7e8917a | 797 | { |
f7e8917a FI |
798 | } |
799 | ||
500d701f PT |
800 | static inline bool |
801 | pnfs_wait_on_layoutreturn(struct inode *ino, struct rpc_task *task) | |
802 | { | |
803 | return false; | |
804 | } | |
805 | ||
738fd0f3 | 806 | static inline void set_pnfs_layoutdriver(struct nfs_server *s, |
ca440c38 JL |
807 | const struct nfs_fh *mntfh, |
808 | struct nfs_fsinfo *fsinfo) | |
85e174ba RL |
809 | { |
810 | } | |
811 | ||
812 | static inline void unset_pnfs_layoutdriver(struct nfs_server *s) | |
813 | { | |
814 | } | |
815 | ||
a861a1e1 | 816 | static inline int |
ea2cf228 FI |
817 | pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, |
818 | struct nfs_commit_info *cinfo) | |
a861a1e1 FI |
819 | { |
820 | return PNFS_NOT_ATTEMPTED; | |
821 | } | |
822 | ||
ea2cf228 FI |
823 | static inline struct pnfs_ds_commit_info * |
824 | pnfs_get_ds_info(struct inode *inode) | |
825 | { | |
826 | return NULL; | |
827 | } | |
828 | ||
9c455a8c TM |
829 | static inline void |
830 | pnfs_init_ds_commit_info_ops(struct pnfs_ds_commit_info *fl_cinfo, struct inode *inode) | |
831 | { | |
832 | } | |
833 | ||
c21e7168 TM |
834 | static inline void |
835 | pnfs_init_ds_commit_info(struct pnfs_ds_commit_info *fl_cinfo) | |
836 | { | |
837 | } | |
838 | ||
18f41296 TM |
839 | static inline void |
840 | pnfs_release_ds_info(struct pnfs_ds_commit_info *fl_cinfo, struct inode *inode) | |
841 | { | |
842 | } | |
843 | ||
8dd37758 | 844 | static inline bool |
ea2cf228 | 845 | pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, |
b57ff130 | 846 | struct nfs_commit_info *cinfo, u32 ds_commit_idx) |
a861a1e1 | 847 | { |
8dd37758 | 848 | return false; |
a861a1e1 FI |
849 | } |
850 | ||
8dd37758 | 851 | static inline bool |
ea2cf228 | 852 | pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) |
a861a1e1 | 853 | { |
8dd37758 | 854 | return false; |
d6d6dc7c FI |
855 | } |
856 | ||
857 | static inline int | |
ea2cf228 FI |
858 | pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, |
859 | int max) | |
d6d6dc7c FI |
860 | { |
861 | return 0; | |
a861a1e1 FI |
862 | } |
863 | ||
9c455a8c TM |
864 | static inline void |
865 | pnfs_recover_commit_reqs(struct list_head *head, struct nfs_commit_info *cinfo) | |
866 | { | |
867 | } | |
868 | ||
ef311537 | 869 | static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync) |
863a3c6c AA |
870 | { |
871 | return 0; | |
872 | } | |
1775bc34 | 873 | |
82be417a AA |
874 | static inline bool |
875 | pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, | |
876 | struct nfs_server *nfss) | |
877 | { | |
878 | return false; | |
879 | } | |
880 | ||
881 | static inline struct nfs4_threshold *pnfs_mdsthreshold_alloc(void) | |
882 | { | |
883 | return NULL; | |
884 | } | |
885 | ||
5f01d953 PT |
886 | static inline void nfs4_pnfs_v3_ds_connect_unload(void) |
887 | { | |
888 | } | |
889 | ||
30cb3ee2 | 890 | static inline bool nfs4_layout_refresh_old_stateid(nfs4_stateid *dst, |
ecf84026 | 891 | struct pnfs_layout_range *dst_range, |
7380020e TM |
892 | struct inode *inode) |
893 | { | |
894 | return false; | |
895 | } | |
2409a976 FI |
896 | |
897 | static inline void pnfs_lgopen_prepare(struct nfs4_opendata *data, | |
898 | struct nfs_open_context *ctx) | |
899 | { | |
900 | } | |
901 | ||
902 | static inline void pnfs_parse_lgopen(struct inode *ino, | |
903 | struct nfs4_layoutget *lgp, | |
904 | struct nfs_open_context *ctx) | |
905 | { | |
906 | } | |
30ae2412 FI |
907 | |
908 | static inline void nfs4_lgopen_release(struct nfs4_layoutget *lgp) | |
909 | { | |
910 | } | |
911 | ||
c8bf7073 TM |
912 | static inline bool pnfs_layout_is_valid(const struct pnfs_layout_hdr *lo) |
913 | { | |
914 | return false; | |
915 | } | |
916 | ||
85e174ba RL |
917 | #endif /* CONFIG_NFS_V4_1 */ |
918 | ||
865a7ecb | 919 | #if IS_ENABLED(CONFIG_NFS_V4_2) |
c8ad8894 | 920 | int pnfs_report_layoutstat(struct inode *inode, gfp_t gfp_flags); |
865a7ecb PT |
921 | #else |
922 | static inline int | |
c8ad8894 | 923 | pnfs_report_layoutstat(struct inode *inode, gfp_t gfp_flags) |
865a7ecb PT |
924 | { |
925 | return 0; | |
926 | } | |
927 | #endif | |
928 | ||
85e174ba | 929 | #endif /* FS_NFS_PNFS_H */ |