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 */ | |
54 | }; | |
55 | ||
56 | struct nfs4_pnfs_ds { | |
57 | struct list_head ds_node; /* nfs4_pnfs_dev_hlist dev_dslist */ | |
58 | char *ds_remotestr; /* comma sep list of addrs */ | |
59 | struct list_head ds_addrs; | |
60 | struct nfs_client *ds_clp; | |
a2a5dea7 | 61 | refcount_t ds_count; |
875ae069 PT |
62 | unsigned long ds_state; |
63 | #define NFS4DS_CONNECTING 0 /* ds is establishing connection */ | |
4541d16c FI |
64 | }; |
65 | ||
974cec8c | 66 | struct pnfs_layout_segment { |
566052c5 | 67 | struct list_head pls_list; |
a9bae566 | 68 | struct list_head pls_lc_list; |
566052c5 | 69 | struct pnfs_layout_range pls_range; |
eba6dd69 | 70 | refcount_t pls_refcount; |
66755283 | 71 | u32 pls_seq; |
4541d16c | 72 | unsigned long pls_flags; |
566052c5 | 73 | struct pnfs_layout_hdr *pls_layout; |
974cec8c AA |
74 | }; |
75 | ||
64419a9b AA |
76 | enum pnfs_try_status { |
77 | PNFS_ATTEMPTED = 0, | |
78 | PNFS_NOT_ATTEMPTED = 1, | |
ceb11e13 | 79 | PNFS_TRY_AGAIN = 2, |
64419a9b AA |
80 | }; |
81 | ||
85e174ba RL |
82 | #ifdef CONFIG_NFS_V4_1 |
83 | ||
84 | #define LAYOUT_NFSV4_1_MODULE_PREFIX "nfs-layouttype4" | |
85 | ||
39280a5a PT |
86 | /* |
87 | * Default data server connection timeout and retrans vaules. | |
88 | * Set by module parameters dataserver_timeo and dataserver_retrans. | |
89 | */ | |
90 | #define NFS4_DEF_DS_TIMEO 600 /* in tenths of a second */ | |
91 | #define NFS4_DEF_DS_RETRANS 5 | |
b3dce6a2 | 92 | #define PNFS_DEVICE_RETRY_TIMEOUT (120*HZ) |
39280a5a PT |
93 | |
94 | /* error codes for internal use */ | |
95 | #define NFS4ERR_RESET_TO_MDS 12001 | |
96 | #define NFS4ERR_RESET_TO_PNFS 12002 | |
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 */ |
e5e94017 BH |
107 | }; |
108 | ||
8a1636c4 | 109 | enum layoutdriver_policy_flags { |
88ac815c PT |
110 | /* Should the pNFS client commit and return the layout upon truncate to |
111 | * a smaller size */ | |
8a1636c4 | 112 | PNFS_LAYOUTRET_ON_SETATTR = 1 << 0, |
fe0fe835 | 113 | PNFS_LAYOUTRET_ON_ERROR = 1 << 1, |
612aa983 | 114 | PNFS_READ_WHOLE_PAGE = 1 << 2, |
f86c3ac5 | 115 | PNFS_LAYOUTGET_ON_OPEN = 1 << 3, |
8a1636c4 BH |
116 | }; |
117 | ||
1775bc34 BH |
118 | struct nfs4_deviceid_node; |
119 | ||
85e174ba RL |
120 | /* Per-layout driver specific registration structure */ |
121 | struct pnfs_layoutdriver_type { | |
02c35fca FI |
122 | struct list_head pnfs_tblid; |
123 | const u32 id; | |
124 | const char *name; | |
125 | struct module *owner; | |
8a1636c4 | 126 | unsigned flags; |
661373b1 | 127 | unsigned max_deviceinfo_size; |
636fb9c8 | 128 | |
738fd0f3 BH |
129 | int (*set_layoutdriver) (struct nfs_server *, const struct nfs_fh *); |
130 | int (*clear_layoutdriver) (struct nfs_server *); | |
131 | ||
636fb9c8 BH |
132 | struct pnfs_layout_hdr * (*alloc_layout_hdr) (struct inode *inode, gfp_t gfp_flags); |
133 | void (*free_layout_hdr) (struct pnfs_layout_hdr *); | |
134 | ||
a75b9df9 | 135 | struct pnfs_layout_segment * (*alloc_lseg) (struct pnfs_layout_hdr *layoutid, struct nfs4_layoutget_res *lgr, gfp_t gfp_flags); |
b1f69b75 | 136 | void (*free_lseg) (struct pnfs_layout_segment *lseg); |
03772d2f TM |
137 | void (*add_lseg) (struct pnfs_layout_hdr *layoutid, |
138 | struct pnfs_layout_segment *lseg, | |
139 | struct list_head *free_me); | |
94ad1c80 | 140 | |
c88953d8 CH |
141 | void (*return_range) (struct pnfs_layout_hdr *lo, |
142 | struct pnfs_layout_range *range); | |
143 | ||
94ad1c80 | 144 | /* test for nfs page cache coalescing */ |
1751c363 TM |
145 | const struct nfs_pageio_ops *pg_read_ops; |
146 | const struct nfs_pageio_ops *pg_write_ops; | |
64419a9b | 147 | |
ea2cf228 | 148 | struct pnfs_ds_commit_info *(*get_ds_info) (struct inode *inode); |
8dd37758 | 149 | void (*mark_request_commit) (struct nfs_page *req, |
ea2cf228 | 150 | struct pnfs_layout_segment *lseg, |
b57ff130 WAA |
151 | struct nfs_commit_info *cinfo, |
152 | u32 ds_commit_idx); | |
ea2cf228 FI |
153 | void (*clear_request_commit) (struct nfs_page *req, |
154 | struct nfs_commit_info *cinfo); | |
155 | int (*scan_commit_lists) (struct nfs_commit_info *cinfo, | |
156 | int max); | |
1763da12 FI |
157 | void (*recover_commit_reqs) (struct list_head *list, |
158 | struct nfs_commit_info *cinfo); | |
02d1426c WAA |
159 | struct nfs_page * (*search_commit_reqs)(struct nfs_commit_info *cinfo, |
160 | struct page *page); | |
ea2cf228 FI |
161 | int (*commit_pagelist)(struct inode *inode, |
162 | struct list_head *mds_pages, | |
163 | int how, | |
164 | struct nfs_commit_info *cinfo); | |
a861a1e1 | 165 | |
5bb89b47 TM |
166 | int (*sync)(struct inode *inode, bool datasync); |
167 | ||
64419a9b AA |
168 | /* |
169 | * Return PNFS_ATTEMPTED to indicate the layout code has attempted | |
170 | * I/O, else return PNFS_NOT_ATTEMPTED to fall back to normal NFS | |
171 | */ | |
d45f60c6 WAA |
172 | enum pnfs_try_status (*read_pagelist)(struct nfs_pgio_header *); |
173 | enum pnfs_try_status (*write_pagelist)(struct nfs_pgio_header *, int); | |
1775bc34 BH |
174 | |
175 | void (*free_deviceid_node) (struct nfs4_deviceid_node *); | |
661373b1 CH |
176 | struct nfs4_deviceid_node * (*alloc_deviceid_node) |
177 | (struct nfs_server *server, struct pnfs_device *pdev, | |
178 | gfp_t gfp_flags); | |
04a55549 | 179 | |
287bd3e9 | 180 | int (*prepare_layoutreturn) (struct nfs4_layoutreturn_args *); |
ac7db726 | 181 | |
db29c089 | 182 | void (*cleanup_layoutcommit) (struct nfs4_layoutcommit_data *data); |
5f919c9f | 183 | int (*prepare_layoutcommit) (struct nfs4_layoutcommit_args *args); |
8733408d | 184 | int (*prepare_layoutstats) (struct nfs42_layoutstat_args *args); |
85e174ba RL |
185 | }; |
186 | ||
e5e94017 | 187 | struct pnfs_layout_hdr { |
2b28a7be | 188 | refcount_t plh_refcount; |
82714bd1 | 189 | atomic_t plh_outstanding; /* number of RPCs out */ |
b7edfaa1 | 190 | struct list_head plh_layouts; /* other client layouts */ |
fd9a8d71 | 191 | struct list_head plh_bulk_destroy; |
b7edfaa1 | 192 | struct list_head plh_segs; /* layout segments list */ |
68f74479 | 193 | struct list_head plh_return_segs; /* invalid layout segments */ |
f7e8917a | 194 | unsigned long plh_block_lgets; /* block LAYOUTGET if >0 */ |
25c75333 | 195 | unsigned long plh_retry_timestamp; |
566052c5 | 196 | unsigned long plh_flags; |
82714bd1 TM |
197 | nfs4_stateid plh_stateid; |
198 | u32 plh_barrier; /* ignore lower seqids */ | |
3982a6a2 | 199 | u32 plh_return_seq; |
016256df | 200 | enum pnfs_iomode plh_return_iomode; |
acff5880 | 201 | loff_t plh_lwb; /* last write byte for layoutcommit */ |
9fa40758 | 202 | struct rpc_cred *plh_lc_cred; /* layoutcommit cred */ |
b7edfaa1 | 203 | struct inode *plh_inode; |
e5e94017 BH |
204 | }; |
205 | ||
b1f69b75 AA |
206 | struct pnfs_device { |
207 | struct nfs4_deviceid dev_id; | |
208 | unsigned int layout_type; | |
209 | unsigned int mincount; | |
f1c097be | 210 | unsigned int maxcount; /* gdia_maxcount */ |
b1f69b75 | 211 | struct page **pages; |
b1f69b75 | 212 | unsigned int pgbase; |
f1c097be | 213 | unsigned int pglen; /* reply buffer length */ |
df52699e | 214 | unsigned char nocache : 1;/* May not be cached */ |
b1f69b75 AA |
215 | }; |
216 | ||
7f11d8d3 AA |
217 | #define NFS4_PNFS_GETDEVLIST_MAXNUM 16 |
218 | ||
219 | struct pnfs_devicelist { | |
220 | unsigned int eof; | |
221 | unsigned int num_devs; | |
222 | struct nfs4_deviceid dev_id[NFS4_PNFS_GETDEVLIST_MAXNUM]; | |
223 | }; | |
224 | ||
02c35fca FI |
225 | extern int pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *); |
226 | extern void pnfs_unregister_layoutdriver(struct pnfs_layoutdriver_type *); | |
227 | ||
b1f69b75 | 228 | /* nfs4proc.c */ |
dacb452d | 229 | extern size_t max_response_pages(struct nfs_server *server); |
b1f69b75 | 230 | extern int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
cd5875fe TM |
231 | struct pnfs_device *dev, |
232 | struct rpc_cred *cred); | |
dacb452d | 233 | extern struct pnfs_layout_segment* nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout); |
6c16605d | 234 | extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync); |
b1f69b75 AA |
235 | |
236 | /* pnfs.c */ | |
70c3bd2b | 237 | void pnfs_get_layout_hdr(struct pnfs_layout_hdr *lo); |
9369a431 | 238 | void pnfs_put_lseg(struct pnfs_layout_segment *lseg); |
1751c363 | 239 | |
ca440c38 | 240 | void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, struct nfs_fsinfo *); |
85e174ba | 241 | void unset_pnfs_layoutdriver(struct nfs_server *); |
b3230e80 | 242 | void pnfs_generic_pg_check_layout(struct nfs_pageio_descriptor *pgio); |
d8007d4d | 243 | void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *, struct nfs_page *); |
493292dd | 244 | int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc); |
6296556f PT |
245 | void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio, |
246 | struct nfs_page *req, u64 wb_size); | |
180bb5ec | 247 | void pnfs_generic_pg_cleanup(struct nfs_pageio_descriptor *); |
dce81290 | 248 | int pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc); |
b4fdac1a WAA |
249 | size_t pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, |
250 | struct nfs_page *prev, struct nfs_page *req); | |
1b0ae068 | 251 | void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg); |
a0b0a6e3 | 252 | struct pnfs_layout_segment *pnfs_layout_process(struct nfs4_layoutget *lgp); |
29a8bfe5 | 253 | void pnfs_layoutget_free(struct nfs4_layoutget *lgp); |
43f1b3da | 254 | void pnfs_free_lseg_list(struct list_head *tmp_list); |
e5e94017 | 255 | void pnfs_destroy_layout(struct nfs_inode *); |
974cec8c | 256 | void pnfs_destroy_all_layouts(struct nfs_client *); |
fd9a8d71 TM |
257 | int pnfs_destroy_layouts_byfsid(struct nfs_client *clp, |
258 | struct nfs_fsid *fsid, | |
259 | bool is_recall); | |
260 | int pnfs_destroy_layouts_byclid(struct nfs_client *clp, | |
261 | bool is_recall); | |
ecf84026 TM |
262 | bool nfs4_layoutreturn_refresh_stateid(nfs4_stateid *dst, |
263 | struct pnfs_layout_range *dst_range, | |
264 | struct inode *inode); | |
70c3bd2b | 265 | void pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo); |
43f1b3da FI |
266 | void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, |
267 | const nfs4_stateid *new, | |
268 | bool update_barrier); | |
49a85061 | 269 | int pnfs_mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo, |
43f1b3da | 270 | struct list_head *tmp_list, |
6d597e17 JL |
271 | const struct pnfs_layout_range *recall_range, |
272 | u32 seq); | |
10335556 | 273 | int pnfs_mark_matching_lsegs_return(struct pnfs_layout_hdr *lo, |
fc7ff367 | 274 | struct list_head *tmp_list, |
6d597e17 JL |
275 | const struct pnfs_layout_range *recall_range, |
276 | u32 seq); | |
5f46be04 TM |
277 | int pnfs_mark_layout_stateid_invalid(struct pnfs_layout_hdr *lo, |
278 | struct list_head *lseg_list); | |
1c5bd76d TM |
279 | bool pnfs_roc(struct inode *ino, |
280 | struct nfs4_layoutreturn_args *args, | |
281 | struct nfs4_layoutreturn_res *res, | |
282 | const struct rpc_cred *cred); | |
283 | void pnfs_roc_release(struct nfs4_layoutreturn_args *args, | |
284 | struct nfs4_layoutreturn_res *res, | |
285 | int ret); | |
500d701f | 286 | bool pnfs_wait_on_layoutreturn(struct inode *ino, struct rpc_task *task); |
67af7611 | 287 | void pnfs_set_layoutcommit(struct inode *, struct pnfs_layout_segment *, loff_t); |
db29c089 | 288 | void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data); |
ef311537 | 289 | int pnfs_layoutcommit_inode(struct inode *inode, bool sync); |
5bb89b47 TM |
290 | int pnfs_generic_sync(struct inode *inode, bool datasync); |
291 | int pnfs_nfs_generic_sync(struct inode *inode, bool datasync); | |
cbe82603 | 292 | int _pnfs_return_layout(struct inode *); |
24028672 | 293 | int pnfs_commit_and_return_layout(struct inode *); |
d45f60c6 WAA |
294 | void pnfs_ld_write_done(struct nfs_pgio_header *); |
295 | void pnfs_ld_read_done(struct nfs_pgio_header *); | |
1b1bc66b | 296 | void pnfs_read_resend_pnfs(struct nfs_pgio_header *); |
7c24d948 AA |
297 | struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino, |
298 | struct nfs_open_context *ctx, | |
299 | loff_t pos, | |
300 | u64 count, | |
301 | enum pnfs_iomode iomode, | |
c7d73af2 | 302 | bool strict_iomode, |
7c24d948 | 303 | gfp_t gfp_flags); |
68f74479 | 304 | void pnfs_layoutreturn_free_lsegs(struct pnfs_layout_hdr *lo, |
2a974425 | 305 | const nfs4_stateid *arg_stateid, |
68f74479 | 306 | const struct pnfs_layout_range *range, |
68f74479 | 307 | const nfs4_stateid *stateid); |
e5e94017 | 308 | |
03772d2f TM |
309 | void pnfs_generic_layout_insert_lseg(struct pnfs_layout_hdr *lo, |
310 | struct pnfs_layout_segment *lseg, | |
311 | bool (*is_after)(const struct pnfs_layout_range *lseg_range, | |
312 | const struct pnfs_layout_range *old), | |
313 | bool (*do_merge)(struct pnfs_layout_segment *lseg, | |
314 | struct pnfs_layout_segment *old), | |
315 | struct list_head *free_me); | |
316 | ||
c47abcf8 | 317 | void nfs4_deviceid_mark_client_invalid(struct nfs_client *clp); |
53113ad3 WAA |
318 | int pnfs_read_done_resend_to_mds(struct nfs_pgio_header *); |
319 | int pnfs_write_done_resend_to_mds(struct nfs_pgio_header *); | |
82be417a | 320 | struct nfs4_threshold *pnfs_mdsthreshold_alloc(void); |
016256df PT |
321 | void pnfs_error_mark_layout_for_return(struct inode *inode, |
322 | struct pnfs_layout_segment *lseg); | |
c47abcf8 AA |
323 | /* nfs4_deviceid_flags */ |
324 | enum { | |
325 | NFS_DEVICEID_INVALID = 0, /* set when MDS clientid recalled */ | |
1dfed273 | 326 | NFS_DEVICEID_UNAVAILABLE, /* device temporarily unavailable */ |
df52699e | 327 | NFS_DEVICEID_NOCACHE, /* device may not be cached */ |
c47abcf8 AA |
328 | }; |
329 | ||
a1eaecbc BH |
330 | /* pnfs_dev.c */ |
331 | struct nfs4_deviceid_node { | |
332 | struct hlist_node node; | |
9e3bd4e2 | 333 | struct hlist_node tmpnode; |
1775bc34 | 334 | const struct pnfs_layoutdriver_type *ld; |
a1eaecbc | 335 | const struct nfs_client *nfs_client; |
c47abcf8 | 336 | unsigned long flags; |
1dfed273 | 337 | unsigned long timestamp_unavailable; |
a1eaecbc | 338 | struct nfs4_deviceid deviceid; |
84a80f62 | 339 | struct rcu_head rcu; |
a1eaecbc BH |
340 | atomic_t ref; |
341 | }; | |
342 | ||
661373b1 CH |
343 | struct nfs4_deviceid_node * |
344 | nfs4_find_get_deviceid(struct nfs_server *server, | |
345 | const struct nfs4_deviceid *id, struct rpc_cred *cred, | |
346 | gfp_t gfp_mask); | |
35c8bb54 | 347 | void nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *); |
661373b1 | 348 | void nfs4_init_deviceid_node(struct nfs4_deviceid_node *, struct nfs_server *, |
a1eaecbc | 349 | const struct nfs4_deviceid *); |
a1eaecbc | 350 | bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *); |
1dfed273 TM |
351 | void nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node); |
352 | bool nfs4_test_deviceid_unavailable(struct nfs4_deviceid_node *node); | |
1775bc34 | 353 | void nfs4_deviceid_purge_client(const struct nfs_client *); |
a1eaecbc | 354 | |
f54bcf2e TH |
355 | /* pnfs_nfs.c */ |
356 | void pnfs_generic_clear_request_commit(struct nfs_page *req, | |
357 | struct nfs_commit_info *cinfo); | |
358 | void pnfs_generic_commit_release(void *calldata); | |
359 | void pnfs_generic_prepare_to_resend_writes(struct nfs_commit_data *data); | |
360 | void pnfs_generic_rw_release(void *data); | |
361 | void pnfs_generic_recover_commit_reqs(struct list_head *dst, | |
362 | struct nfs_commit_info *cinfo); | |
363 | int pnfs_generic_commit_pagelist(struct inode *inode, | |
364 | struct list_head *mds_pages, | |
365 | int how, | |
366 | struct nfs_commit_info *cinfo, | |
367 | int (*initiate_commit)(struct nfs_commit_data *data, | |
368 | int how)); | |
369 | int pnfs_generic_scan_commit_lists(struct nfs_commit_info *cinfo, int max); | |
370 | void pnfs_generic_write_commit_done(struct rpc_task *task, void *data); | |
875ae069 PT |
371 | void nfs4_pnfs_ds_put(struct nfs4_pnfs_ds *ds); |
372 | struct nfs4_pnfs_ds *nfs4_pnfs_ds_add(struct list_head *dsaddrs, | |
373 | gfp_t gfp_flags); | |
5f01d953 | 374 | void nfs4_pnfs_v3_ds_connect_unload(void); |
a33e4b03 | 375 | int nfs4_pnfs_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds, |
7405f9e1 | 376 | struct nfs4_deviceid_node *devid, unsigned int timeo, |
7d38de3f | 377 | unsigned int retrans, u32 version, u32 minor_version); |
6b7f3cf9 PT |
378 | struct nfs4_pnfs_ds_addr *nfs4_decode_mp_ds_addr(struct net *net, |
379 | struct xdr_stream *xdr, | |
380 | gfp_t gfp_flags); | |
338d00cf TH |
381 | void pnfs_layout_mark_request_commit(struct nfs_page *req, |
382 | struct pnfs_layout_segment *lseg, | |
383 | struct nfs_commit_info *cinfo, | |
384 | u32 ds_commit_idx); | |
2409a976 FI |
385 | void pnfs_lgopen_prepare(struct nfs4_opendata *data, |
386 | struct nfs_open_context *ctx); | |
387 | void pnfs_parse_lgopen(struct inode *ino, struct nfs4_layoutget *lgp, | |
388 | struct nfs_open_context *ctx); | |
30ae2412 | 389 | void nfs4_lgopen_release(struct nfs4_layoutget *lgp); |
f54bcf2e | 390 | |
40dd4b7a TM |
391 | static inline bool nfs_have_layout(struct inode *inode) |
392 | { | |
393 | return NFS_I(inode)->layout != NULL; | |
394 | } | |
395 | ||
45fcc7bc TM |
396 | static inline bool pnfs_layout_is_valid(const struct pnfs_layout_hdr *lo) |
397 | { | |
398 | return test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags) == 0; | |
399 | } | |
400 | ||
30ff0603 CH |
401 | static inline struct nfs4_deviceid_node * |
402 | nfs4_get_deviceid(struct nfs4_deviceid_node *d) | |
403 | { | |
404 | atomic_inc(&d->ref); | |
405 | return d; | |
406 | } | |
407 | ||
d684d2ae | 408 | static inline struct pnfs_layout_segment * |
9369a431 | 409 | pnfs_get_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
410 | { |
411 | if (lseg) { | |
eba6dd69 | 412 | refcount_inc(&lseg->pls_refcount); |
4e857c58 | 413 | smp_mb__after_atomic(); |
d684d2ae FI |
414 | } |
415 | return lseg; | |
416 | } | |
417 | ||
b20135d0 TM |
418 | static inline bool |
419 | pnfs_is_valid_lseg(struct pnfs_layout_segment *lseg) | |
420 | { | |
421 | return test_bit(NFS_LSEG_VALID, &lseg->pls_flags) != 0; | |
422 | } | |
423 | ||
e5e94017 BH |
424 | /* Return true if a layout driver is being used for this mountpoint */ |
425 | static inline int pnfs_enabled_sb(struct nfs_server *nfss) | |
426 | { | |
427 | return nfss->pnfs_curr_ld != NULL; | |
428 | } | |
85e174ba | 429 | |
a861a1e1 | 430 | static inline int |
ea2cf228 FI |
431 | pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, |
432 | struct nfs_commit_info *cinfo) | |
a861a1e1 | 433 | { |
ea2cf228 | 434 | if (cinfo->ds == NULL || cinfo->ds->ncommitting == 0) |
a861a1e1 | 435 | return PNFS_NOT_ATTEMPTED; |
ea2cf228 FI |
436 | return NFS_SERVER(inode)->pnfs_curr_ld->commit_pagelist(inode, mds_pages, how, cinfo); |
437 | } | |
438 | ||
439 | static inline struct pnfs_ds_commit_info * | |
440 | pnfs_get_ds_info(struct inode *inode) | |
441 | { | |
442 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; | |
443 | ||
444 | if (ld == NULL || ld->get_ds_info == NULL) | |
445 | return NULL; | |
446 | return ld->get_ds_info(inode); | |
a861a1e1 FI |
447 | } |
448 | ||
f54bcf2e TH |
449 | static inline void |
450 | pnfs_generic_mark_devid_invalid(struct nfs4_deviceid_node *node) | |
451 | { | |
452 | set_bit(NFS_DEVICEID_INVALID, &node->flags); | |
453 | } | |
454 | ||
8dd37758 | 455 | static inline bool |
ea2cf228 | 456 | pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, |
b57ff130 | 457 | struct nfs_commit_info *cinfo, u32 ds_commit_idx) |
a861a1e1 | 458 | { |
2b0143b5 | 459 | struct inode *inode = d_inode(req->wb_context->dentry); |
8dd37758 | 460 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; |
a861a1e1 | 461 | |
8dd37758 TM |
462 | if (lseg == NULL || ld->mark_request_commit == NULL) |
463 | return false; | |
b57ff130 | 464 | ld->mark_request_commit(req, lseg, cinfo, ds_commit_idx); |
8dd37758 | 465 | return true; |
a861a1e1 FI |
466 | } |
467 | ||
8dd37758 | 468 | static inline bool |
ea2cf228 | 469 | pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) |
a861a1e1 | 470 | { |
2b0143b5 | 471 | struct inode *inode = d_inode(req->wb_context->dentry); |
8dd37758 | 472 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; |
d6d6dc7c | 473 | |
8dd37758 TM |
474 | if (ld == NULL || ld->clear_request_commit == NULL) |
475 | return false; | |
ea2cf228 | 476 | ld->clear_request_commit(req, cinfo); |
8dd37758 | 477 | return true; |
d6d6dc7c FI |
478 | } |
479 | ||
480 | static inline int | |
ea2cf228 FI |
481 | pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, |
482 | int max) | |
d6d6dc7c | 483 | { |
ea2cf228 | 484 | if (cinfo->ds == NULL || cinfo->ds->nwritten == 0) |
d6d6dc7c | 485 | return 0; |
ea2cf228 FI |
486 | else |
487 | return NFS_SERVER(inode)->pnfs_curr_ld->scan_commit_lists(cinfo, max); | |
a861a1e1 FI |
488 | } |
489 | ||
02d1426c WAA |
490 | static inline struct nfs_page * |
491 | pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo, | |
492 | struct page *page) | |
493 | { | |
494 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; | |
495 | ||
496 | if (ld == NULL || ld->search_commit_reqs == NULL) | |
497 | return NULL; | |
498 | return ld->search_commit_reqs(cinfo, page); | |
499 | } | |
500 | ||
8a1636c4 BH |
501 | /* Should the pNFS client commit and return the layout upon a setattr */ |
502 | static inline bool | |
503 | pnfs_ld_layoutret_on_setattr(struct inode *inode) | |
504 | { | |
505 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) | |
506 | return false; | |
507 | return NFS_SERVER(inode)->pnfs_curr_ld->flags & | |
508 | PNFS_LAYOUTRET_ON_SETATTR; | |
509 | } | |
510 | ||
612aa983 CH |
511 | static inline bool |
512 | pnfs_ld_read_whole_page(struct inode *inode) | |
513 | { | |
514 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) | |
515 | return false; | |
516 | return NFS_SERVER(inode)->pnfs_curr_ld->flags & PNFS_READ_WHOLE_PAGE; | |
517 | } | |
518 | ||
5bb89b47 TM |
519 | static inline int |
520 | pnfs_sync_inode(struct inode *inode, bool datasync) | |
521 | { | |
522 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) | |
523 | return 0; | |
524 | return NFS_SERVER(inode)->pnfs_curr_ld->sync(inode, datasync); | |
525 | } | |
526 | ||
d8c951c3 TM |
527 | static inline bool |
528 | pnfs_layoutcommit_outstanding(struct inode *inode) | |
529 | { | |
530 | struct nfs_inode *nfsi = NFS_I(inode); | |
531 | ||
532 | return test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags) != 0 || | |
533 | test_bit(NFS_INO_LAYOUTCOMMITTING, &nfsi->flags) != 0; | |
534 | } | |
535 | ||
cbe82603 BH |
536 | static inline int pnfs_return_layout(struct inode *ino) |
537 | { | |
538 | struct nfs_inode *nfsi = NFS_I(ino); | |
539 | struct nfs_server *nfss = NFS_SERVER(ino); | |
540 | ||
d78471d3 BC |
541 | if (pnfs_enabled_sb(nfss) && nfsi->layout) { |
542 | set_bit(NFS_LAYOUT_RETURN_REQUESTED, &nfsi->layout->plh_flags); | |
cbe82603 | 543 | return _pnfs_return_layout(ino); |
d78471d3 | 544 | } |
cbe82603 BH |
545 | |
546 | return 0; | |
547 | } | |
548 | ||
82be417a AA |
549 | static inline bool |
550 | pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, | |
551 | struct nfs_server *nfss) | |
552 | { | |
fb47ddc9 | 553 | return (dst && src && src->bm != 0 && nfss->pnfs_curr_ld && |
82be417a AA |
554 | nfss->pnfs_curr_ld->id == src->l_type); |
555 | } | |
556 | ||
0762ed2c TM |
557 | static inline u64 |
558 | pnfs_calc_offset_end(u64 offset, u64 len) | |
559 | { | |
560 | if (len == NFS4_MAX_UINT64 || len >= NFS4_MAX_UINT64 - offset) | |
561 | return NFS4_MAX_UINT64; | |
562 | return offset + len - 1; | |
563 | } | |
564 | ||
565 | static inline u64 | |
566 | pnfs_calc_offset_length(u64 offset, u64 end) | |
567 | { | |
568 | if (end == NFS4_MAX_UINT64 || end <= offset) | |
569 | return NFS4_MAX_UINT64; | |
570 | return 1 + end - offset; | |
571 | } | |
572 | ||
e144e539 TM |
573 | static inline void |
574 | pnfs_copy_range(struct pnfs_layout_range *dst, | |
575 | const struct pnfs_layout_range *src) | |
576 | { | |
577 | memcpy(dst, src, sizeof(*dst)); | |
578 | } | |
579 | ||
17822b20 TM |
580 | static inline u64 |
581 | pnfs_end_offset(u64 start, u64 len) | |
582 | { | |
583 | if (NFS4_MAX_UINT64 - start <= len) | |
584 | return NFS4_MAX_UINT64; | |
585 | return start + len; | |
586 | } | |
587 | ||
588 | /* | |
589 | * Are 2 ranges intersecting? | |
590 | * start1 end1 | |
591 | * [----------------------------------) | |
592 | * start2 end2 | |
593 | * [----------------) | |
594 | */ | |
595 | static inline bool | |
596 | pnfs_is_range_intersecting(u64 start1, u64 end1, u64 start2, u64 end2) | |
597 | { | |
598 | return (end1 == NFS4_MAX_UINT64 || start2 < end1) && | |
599 | (end2 == NFS4_MAX_UINT64 || start1 < end2); | |
600 | } | |
601 | ||
602 | static inline bool | |
603 | pnfs_lseg_range_intersecting(const struct pnfs_layout_range *l1, | |
604 | const struct pnfs_layout_range *l2) | |
605 | { | |
606 | u64 end1 = pnfs_end_offset(l1->offset, l1->length); | |
607 | u64 end2 = pnfs_end_offset(l2->offset, l2->length); | |
608 | ||
609 | return pnfs_is_range_intersecting(l1->offset, end1, l2->offset, end2); | |
610 | } | |
611 | ||
08cb5b0f BC |
612 | static inline bool |
613 | pnfs_lseg_request_intersecting(struct pnfs_layout_segment *lseg, struct nfs_page *req) | |
614 | { | |
615 | u64 seg_last = pnfs_end_offset(lseg->pls_range.offset, lseg->pls_range.length); | |
616 | u64 req_last = req_offset(req) + req->wb_bytes; | |
617 | ||
618 | return pnfs_is_range_intersecting(lseg->pls_range.offset, seg_last, | |
619 | req_offset(req), req_last); | |
620 | } | |
621 | ||
bbf58bf3 TM |
622 | extern unsigned int layoutstats_timer; |
623 | ||
6f00866d TM |
624 | #ifdef NFS_DEBUG |
625 | void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id); | |
626 | #else | |
627 | static inline void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id) | |
628 | { | |
629 | } | |
bbf58bf3 | 630 | |
6f00866d | 631 | #endif /* NFS_DEBUG */ |
85e174ba RL |
632 | #else /* CONFIG_NFS_V4_1 */ |
633 | ||
40dd4b7a TM |
634 | static inline bool nfs_have_layout(struct inode *inode) |
635 | { | |
636 | return false; | |
637 | } | |
638 | ||
974cec8c AA |
639 | static inline void pnfs_destroy_all_layouts(struct nfs_client *clp) |
640 | { | |
641 | } | |
642 | ||
e5e94017 BH |
643 | static inline void pnfs_destroy_layout(struct nfs_inode *nfsi) |
644 | { | |
645 | } | |
646 | ||
d684d2ae | 647 | static inline struct pnfs_layout_segment * |
9369a431 | 648 | pnfs_get_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
649 | { |
650 | return NULL; | |
651 | } | |
652 | ||
9369a431 | 653 | static inline void pnfs_put_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
654 | { |
655 | } | |
656 | ||
cbe82603 BH |
657 | static inline int pnfs_return_layout(struct inode *ino) |
658 | { | |
659 | return 0; | |
660 | } | |
661 | ||
24028672 TM |
662 | static inline int pnfs_commit_and_return_layout(struct inode *inode) |
663 | { | |
664 | return 0; | |
665 | } | |
666 | ||
8a1636c4 BH |
667 | static inline bool |
668 | pnfs_ld_layoutret_on_setattr(struct inode *inode) | |
669 | { | |
670 | return false; | |
671 | } | |
672 | ||
612aa983 CH |
673 | static inline bool |
674 | pnfs_ld_read_whole_page(struct inode *inode) | |
675 | { | |
676 | return false; | |
677 | } | |
678 | ||
5bb89b47 TM |
679 | static inline int |
680 | pnfs_sync_inode(struct inode *inode, bool datasync) | |
681 | { | |
682 | return 0; | |
683 | } | |
684 | ||
10b7e9ad TM |
685 | static inline bool |
686 | pnfs_layoutcommit_outstanding(struct inode *inode) | |
687 | { | |
688 | return false; | |
689 | } | |
690 | ||
691 | ||
f7e8917a | 692 | static inline bool |
1c5bd76d TM |
693 | pnfs_roc(struct inode *ino, |
694 | struct nfs4_layoutreturn_args *args, | |
695 | struct nfs4_layoutreturn_res *res, | |
696 | const struct rpc_cred *cred) | |
f7e8917a FI |
697 | { |
698 | return false; | |
699 | } | |
700 | ||
701 | static inline void | |
1c5bd76d TM |
702 | pnfs_roc_release(struct nfs4_layoutreturn_args *args, |
703 | struct nfs4_layoutreturn_res *res, | |
704 | int ret) | |
f7e8917a | 705 | { |
f7e8917a FI |
706 | } |
707 | ||
500d701f PT |
708 | static inline bool |
709 | pnfs_wait_on_layoutreturn(struct inode *ino, struct rpc_task *task) | |
710 | { | |
711 | return false; | |
712 | } | |
713 | ||
738fd0f3 | 714 | static inline void set_pnfs_layoutdriver(struct nfs_server *s, |
ca440c38 JL |
715 | const struct nfs_fh *mntfh, |
716 | struct nfs_fsinfo *fsinfo) | |
85e174ba RL |
717 | { |
718 | } | |
719 | ||
720 | static inline void unset_pnfs_layoutdriver(struct nfs_server *s) | |
721 | { | |
722 | } | |
723 | ||
a861a1e1 | 724 | static inline int |
ea2cf228 FI |
725 | pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, |
726 | struct nfs_commit_info *cinfo) | |
a861a1e1 FI |
727 | { |
728 | return PNFS_NOT_ATTEMPTED; | |
729 | } | |
730 | ||
ea2cf228 FI |
731 | static inline struct pnfs_ds_commit_info * |
732 | pnfs_get_ds_info(struct inode *inode) | |
733 | { | |
734 | return NULL; | |
735 | } | |
736 | ||
8dd37758 | 737 | static inline bool |
ea2cf228 | 738 | pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, |
b57ff130 | 739 | struct nfs_commit_info *cinfo, u32 ds_commit_idx) |
a861a1e1 | 740 | { |
8dd37758 | 741 | return false; |
a861a1e1 FI |
742 | } |
743 | ||
8dd37758 | 744 | static inline bool |
ea2cf228 | 745 | pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) |
a861a1e1 | 746 | { |
8dd37758 | 747 | return false; |
d6d6dc7c FI |
748 | } |
749 | ||
750 | static inline int | |
ea2cf228 FI |
751 | pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, |
752 | int max) | |
d6d6dc7c FI |
753 | { |
754 | return 0; | |
a861a1e1 FI |
755 | } |
756 | ||
02d1426c WAA |
757 | static inline struct nfs_page * |
758 | pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo, | |
759 | struct page *page) | |
760 | { | |
761 | return NULL; | |
762 | } | |
763 | ||
ef311537 | 764 | static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync) |
863a3c6c AA |
765 | { |
766 | return 0; | |
767 | } | |
1775bc34 | 768 | |
82be417a AA |
769 | static inline bool |
770 | pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, | |
771 | struct nfs_server *nfss) | |
772 | { | |
773 | return false; | |
774 | } | |
775 | ||
776 | static inline struct nfs4_threshold *pnfs_mdsthreshold_alloc(void) | |
777 | { | |
778 | return NULL; | |
779 | } | |
780 | ||
5f01d953 PT |
781 | static inline void nfs4_pnfs_v3_ds_connect_unload(void) |
782 | { | |
783 | } | |
784 | ||
c16467dc | 785 | static inline bool nfs4_layoutreturn_refresh_stateid(nfs4_stateid *dst, |
ecf84026 | 786 | struct pnfs_layout_range *dst_range, |
7380020e TM |
787 | struct inode *inode) |
788 | { | |
789 | return false; | |
790 | } | |
2409a976 FI |
791 | |
792 | static inline void pnfs_lgopen_prepare(struct nfs4_opendata *data, | |
793 | struct nfs_open_context *ctx) | |
794 | { | |
795 | } | |
796 | ||
797 | static inline void pnfs_parse_lgopen(struct inode *ino, | |
798 | struct nfs4_layoutget *lgp, | |
799 | struct nfs_open_context *ctx) | |
800 | { | |
801 | } | |
30ae2412 FI |
802 | |
803 | static inline void nfs4_lgopen_release(struct nfs4_layoutget *lgp) | |
804 | { | |
805 | } | |
806 | ||
c8bf7073 TM |
807 | static inline bool pnfs_layout_is_valid(const struct pnfs_layout_hdr *lo) |
808 | { | |
809 | return false; | |
810 | } | |
811 | ||
85e174ba RL |
812 | #endif /* CONFIG_NFS_V4_1 */ |
813 | ||
865a7ecb | 814 | #if IS_ENABLED(CONFIG_NFS_V4_2) |
c8ad8894 | 815 | int pnfs_report_layoutstat(struct inode *inode, gfp_t gfp_flags); |
865a7ecb PT |
816 | #else |
817 | static inline int | |
c8ad8894 | 818 | pnfs_report_layoutstat(struct inode *inode, gfp_t gfp_flags) |
865a7ecb PT |
819 | { |
820 | return 0; | |
821 | } | |
822 | #endif | |
823 | ||
85e174ba | 824 | #endif /* FS_NFS_PNFS_H */ |