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d7e09d03 PT |
1 | /* |
2 | * GPL HEADER START | |
3 | * | |
4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 only, | |
8 | * as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License version 2 for more details (a copy is included | |
14 | * in the LICENSE file that accompanied this code). | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * version 2 along with this program; If not, see | |
18 | * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf | |
19 | * | |
20 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
21 | * CA 95054 USA or visit www.sun.com if you need additional information or | |
22 | * have any questions. | |
23 | * | |
24 | * GPL HEADER END | |
25 | */ | |
26 | /* | |
27 | * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. | |
28 | * Use is subject to license terms. | |
29 | * | |
56f4c5a8 | 30 | * Copyright (c) 2011, 2013, Intel Corporation. |
d7e09d03 PT |
31 | */ |
32 | /* | |
33 | * This file is part of Lustre, http://www.lustre.org/ | |
34 | * Lustre is a trademark of Sun Microsystems, Inc. | |
35 | * | |
36 | * lustre/fid/fid_request.c | |
37 | * | |
38 | * Lustre Sequence Manager | |
39 | * | |
40 | * Author: Yury Umanets <umka@clusterfs.com> | |
41 | */ | |
42 | ||
43 | #define DEBUG_SUBSYSTEM S_FID | |
44 | ||
9fdaf8c0 | 45 | #include "../../include/linux/libcfs/libcfs.h" |
56f4c5a8 | 46 | #include <linux/module.h> |
d7e09d03 | 47 | |
61566391 GKH |
48 | #include "../include/obd.h" |
49 | #include "../include/obd_class.h" | |
50 | #include "../include/obd_support.h" | |
51 | #include "../include/lustre_fid.h" | |
d7e09d03 | 52 | /* mdc RPC locks */ |
61566391 | 53 | #include "../include/lustre_mdc.h" |
d7e09d03 PT |
54 | #include "fid_internal.h" |
55 | ||
56 | static int seq_client_rpc(struct lu_client_seq *seq, | |
57 | struct lu_seq_range *output, __u32 opc, | |
58 | const char *opcname) | |
59 | { | |
60 | struct obd_export *exp = seq->lcs_exp; | |
61 | struct ptlrpc_request *req; | |
62 | struct lu_seq_range *out, *in; | |
56f4c5a8 LX |
63 | __u32 *op; |
64 | unsigned int debug_mask; | |
65 | int rc; | |
d7e09d03 PT |
66 | |
67 | req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_SEQ_QUERY, | |
68 | LUSTRE_MDS_VERSION, SEQ_QUERY); | |
69 | if (req == NULL) | |
0a3bdb00 | 70 | return -ENOMEM; |
d7e09d03 PT |
71 | |
72 | /* Init operation code */ | |
73 | op = req_capsule_client_get(&req->rq_pill, &RMF_SEQ_OPC); | |
74 | *op = opc; | |
75 | ||
76 | /* Zero out input range, this is not recovery yet. */ | |
77 | in = req_capsule_client_get(&req->rq_pill, &RMF_SEQ_RANGE); | |
78 | range_init(in); | |
79 | ||
80 | ptlrpc_request_set_replen(req); | |
81 | ||
82 | in->lsr_index = seq->lcs_space.lsr_index; | |
83 | if (seq->lcs_type == LUSTRE_SEQ_METADATA) | |
84 | fld_range_set_mdt(in); | |
85 | else | |
86 | fld_range_set_ost(in); | |
87 | ||
88 | if (opc == SEQ_ALLOC_SUPER) { | |
89 | req->rq_request_portal = SEQ_CONTROLLER_PORTAL; | |
90 | req->rq_reply_portal = MDC_REPLY_PORTAL; | |
91 | /* During allocating super sequence for data object, | |
92 | * the current thread might hold the export of MDT0(MDT0 | |
93 | * precreating objects on this OST), and it will send the | |
94 | * request to MDT0 here, so we can not keep resending the | |
95 | * request here, otherwise if MDT0 is failed(umounted), | |
96 | * it can not release the export of MDT0 */ | |
97 | if (seq->lcs_type == LUSTRE_SEQ_DATA) | |
98 | req->rq_no_delay = req->rq_no_resend = 1; | |
99 | debug_mask = D_CONSOLE; | |
100 | } else { | |
101 | if (seq->lcs_type == LUSTRE_SEQ_METADATA) | |
102 | req->rq_request_portal = SEQ_METADATA_PORTAL; | |
103 | else | |
104 | req->rq_request_portal = SEQ_DATA_PORTAL; | |
105 | debug_mask = D_INFO; | |
106 | } | |
107 | ||
108 | ptlrpc_at_set_req_timeout(req); | |
109 | ||
110 | if (seq->lcs_type == LUSTRE_SEQ_METADATA) | |
111 | mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL); | |
112 | rc = ptlrpc_queue_wait(req); | |
113 | if (seq->lcs_type == LUSTRE_SEQ_METADATA) | |
114 | mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL); | |
115 | if (rc) | |
116 | GOTO(out_req, rc); | |
117 | ||
118 | out = req_capsule_server_get(&req->rq_pill, &RMF_SEQ_RANGE); | |
119 | *output = *out; | |
120 | ||
121 | if (!range_is_sane(output)) { | |
122 | CERROR("%s: Invalid range received from server: " | |
123 | DRANGE"\n", seq->lcs_name, PRANGE(output)); | |
124 | GOTO(out_req, rc = -EINVAL); | |
125 | } | |
126 | ||
127 | if (range_is_exhausted(output)) { | |
128 | CERROR("%s: Range received from server is exhausted: " | |
129 | DRANGE"]\n", seq->lcs_name, PRANGE(output)); | |
130 | GOTO(out_req, rc = -EINVAL); | |
131 | } | |
132 | ||
133 | CDEBUG_LIMIT(debug_mask, "%s: Allocated %s-sequence "DRANGE"]\n", | |
134 | seq->lcs_name, opcname, PRANGE(output)); | |
135 | ||
d7e09d03 PT |
136 | out_req: |
137 | ptlrpc_req_finished(req); | |
138 | return rc; | |
139 | } | |
140 | ||
141 | /* Request sequence-controller node to allocate new super-sequence. */ | |
142 | int seq_client_alloc_super(struct lu_client_seq *seq, | |
143 | const struct lu_env *env) | |
144 | { | |
145 | int rc; | |
d7e09d03 PT |
146 | |
147 | mutex_lock(&seq->lcs_mutex); | |
148 | ||
149 | if (seq->lcs_srv) { | |
56f4c5a8 | 150 | rc = 0; |
d7e09d03 PT |
151 | } else { |
152 | /* Check whether the connection to seq controller has been | |
153 | * setup (lcs_exp != NULL) */ | |
154 | if (seq->lcs_exp == NULL) { | |
155 | mutex_unlock(&seq->lcs_mutex); | |
0a3bdb00 | 156 | return -EINPROGRESS; |
d7e09d03 PT |
157 | } |
158 | ||
159 | rc = seq_client_rpc(seq, &seq->lcs_space, | |
160 | SEQ_ALLOC_SUPER, "super"); | |
161 | } | |
162 | mutex_unlock(&seq->lcs_mutex); | |
0a3bdb00 | 163 | return rc; |
d7e09d03 PT |
164 | } |
165 | ||
166 | /* Request sequence-controller node to allocate new meta-sequence. */ | |
167 | static int seq_client_alloc_meta(const struct lu_env *env, | |
168 | struct lu_client_seq *seq) | |
169 | { | |
170 | int rc; | |
d7e09d03 PT |
171 | |
172 | if (seq->lcs_srv) { | |
56f4c5a8 | 173 | rc = 0; |
d7e09d03 PT |
174 | } else { |
175 | do { | |
176 | /* If meta server return -EINPROGRESS or EAGAIN, | |
177 | * it means meta server might not be ready to | |
178 | * allocate super sequence from sequence controller | |
179 | * (MDT0)yet */ | |
180 | rc = seq_client_rpc(seq, &seq->lcs_space, | |
181 | SEQ_ALLOC_META, "meta"); | |
182 | } while (rc == -EINPROGRESS || rc == -EAGAIN); | |
183 | } | |
56f4c5a8 | 184 | |
0a3bdb00 | 185 | return rc; |
d7e09d03 PT |
186 | } |
187 | ||
188 | /* Allocate new sequence for client. */ | |
189 | static int seq_client_alloc_seq(const struct lu_env *env, | |
114acca8 | 190 | struct lu_client_seq *seq, u64 *seqnr) |
d7e09d03 PT |
191 | { |
192 | int rc; | |
d7e09d03 PT |
193 | |
194 | LASSERT(range_is_sane(&seq->lcs_space)); | |
195 | ||
196 | if (range_is_exhausted(&seq->lcs_space)) { | |
197 | rc = seq_client_alloc_meta(env, seq); | |
198 | if (rc) { | |
5cbcd111 | 199 | CERROR("%s: Can't allocate new meta-sequence, rc %d\n", |
913827ee | 200 | seq->lcs_name, rc); |
0a3bdb00 | 201 | return rc; |
d7e09d03 PT |
202 | } else { |
203 | CDEBUG(D_INFO, "%s: New range - "DRANGE"\n", | |
204 | seq->lcs_name, PRANGE(&seq->lcs_space)); | |
205 | } | |
206 | } else { | |
207 | rc = 0; | |
208 | } | |
209 | ||
210 | LASSERT(!range_is_exhausted(&seq->lcs_space)); | |
211 | *seqnr = seq->lcs_space.lsr_start; | |
212 | seq->lcs_space.lsr_start += 1; | |
213 | ||
55f5a824 | 214 | CDEBUG(D_INFO, "%s: Allocated sequence [%#llx]\n", seq->lcs_name, |
d7e09d03 PT |
215 | *seqnr); |
216 | ||
0a3bdb00 | 217 | return rc; |
d7e09d03 PT |
218 | } |
219 | ||
220 | static int seq_fid_alloc_prep(struct lu_client_seq *seq, | |
221 | wait_queue_t *link) | |
222 | { | |
223 | if (seq->lcs_update) { | |
224 | add_wait_queue(&seq->lcs_waitq, link); | |
225 | set_current_state(TASK_UNINTERRUPTIBLE); | |
226 | mutex_unlock(&seq->lcs_mutex); | |
227 | ||
b3669a7f | 228 | schedule(); |
d7e09d03 PT |
229 | |
230 | mutex_lock(&seq->lcs_mutex); | |
231 | remove_wait_queue(&seq->lcs_waitq, link); | |
232 | set_current_state(TASK_RUNNING); | |
233 | return -EAGAIN; | |
234 | } | |
235 | ++seq->lcs_update; | |
236 | mutex_unlock(&seq->lcs_mutex); | |
237 | return 0; | |
238 | } | |
239 | ||
240 | static void seq_fid_alloc_fini(struct lu_client_seq *seq) | |
241 | { | |
242 | LASSERT(seq->lcs_update == 1); | |
243 | mutex_lock(&seq->lcs_mutex); | |
244 | --seq->lcs_update; | |
245 | wake_up(&seq->lcs_waitq); | |
246 | } | |
247 | ||
248 | /** | |
249 | * Allocate the whole seq to the caller. | |
250 | **/ | |
251 | int seq_client_get_seq(const struct lu_env *env, | |
114acca8 | 252 | struct lu_client_seq *seq, u64 *seqnr) |
d7e09d03 PT |
253 | { |
254 | wait_queue_t link; | |
255 | int rc; | |
256 | ||
257 | LASSERT(seqnr != NULL); | |
258 | mutex_lock(&seq->lcs_mutex); | |
9e795d35 | 259 | init_waitqueue_entry(&link, current); |
d7e09d03 PT |
260 | |
261 | while (1) { | |
262 | rc = seq_fid_alloc_prep(seq, &link); | |
263 | if (rc == 0) | |
264 | break; | |
265 | } | |
266 | ||
267 | rc = seq_client_alloc_seq(env, seq, seqnr); | |
268 | if (rc) { | |
5cbcd111 | 269 | CERROR("%s: Can't allocate new sequence, rc %d\n", |
913827ee | 270 | seq->lcs_name, rc); |
d7e09d03 PT |
271 | seq_fid_alloc_fini(seq); |
272 | mutex_unlock(&seq->lcs_mutex); | |
273 | return rc; | |
274 | } | |
275 | ||
143f378c | 276 | CDEBUG(D_INFO, "%s: allocate sequence [0x%16.16Lx]\n", |
913827ee | 277 | seq->lcs_name, *seqnr); |
d7e09d03 PT |
278 | |
279 | /* Since the caller require the whole seq, | |
280 | * so marked this seq to be used */ | |
281 | if (seq->lcs_type == LUSTRE_SEQ_METADATA) | |
282 | seq->lcs_fid.f_oid = LUSTRE_METADATA_SEQ_MAX_WIDTH; | |
283 | else | |
284 | seq->lcs_fid.f_oid = LUSTRE_DATA_SEQ_MAX_WIDTH; | |
285 | ||
286 | seq->lcs_fid.f_seq = *seqnr; | |
287 | seq->lcs_fid.f_ver = 0; | |
288 | /* | |
289 | * Inform caller that sequence switch is performed to allow it | |
290 | * to setup FLD for it. | |
291 | */ | |
292 | seq_fid_alloc_fini(seq); | |
293 | mutex_unlock(&seq->lcs_mutex); | |
294 | ||
295 | return rc; | |
296 | } | |
297 | EXPORT_SYMBOL(seq_client_get_seq); | |
298 | ||
299 | /* Allocate new fid on passed client @seq and save it to @fid. */ | |
300 | int seq_client_alloc_fid(const struct lu_env *env, | |
301 | struct lu_client_seq *seq, struct lu_fid *fid) | |
302 | { | |
303 | wait_queue_t link; | |
304 | int rc; | |
d7e09d03 PT |
305 | |
306 | LASSERT(seq != NULL); | |
307 | LASSERT(fid != NULL); | |
308 | ||
9e795d35 | 309 | init_waitqueue_entry(&link, current); |
d7e09d03 PT |
310 | mutex_lock(&seq->lcs_mutex); |
311 | ||
312 | if (OBD_FAIL_CHECK(OBD_FAIL_SEQ_EXHAUST)) | |
313 | seq->lcs_fid.f_oid = seq->lcs_width; | |
314 | ||
315 | while (1) { | |
114acca8 | 316 | u64 seqnr; |
d7e09d03 PT |
317 | |
318 | if (!fid_is_zero(&seq->lcs_fid) && | |
319 | fid_oid(&seq->lcs_fid) < seq->lcs_width) { | |
320 | /* Just bump last allocated fid and return to caller. */ | |
321 | seq->lcs_fid.f_oid += 1; | |
322 | rc = 0; | |
323 | break; | |
324 | } | |
325 | ||
326 | rc = seq_fid_alloc_prep(seq, &link); | |
327 | if (rc) | |
328 | continue; | |
329 | ||
330 | rc = seq_client_alloc_seq(env, seq, &seqnr); | |
331 | if (rc) { | |
5cbcd111 | 332 | CERROR("%s: Can't allocate new sequence, rc %d\n", |
913827ee | 333 | seq->lcs_name, rc); |
d7e09d03 PT |
334 | seq_fid_alloc_fini(seq); |
335 | mutex_unlock(&seq->lcs_mutex); | |
0a3bdb00 | 336 | return rc; |
d7e09d03 PT |
337 | } |
338 | ||
143f378c | 339 | CDEBUG(D_INFO, "%s: Switch to sequence [0x%16.16Lx]\n", |
913827ee | 340 | seq->lcs_name, seqnr); |
d7e09d03 PT |
341 | |
342 | seq->lcs_fid.f_oid = LUSTRE_FID_INIT_OID; | |
343 | seq->lcs_fid.f_seq = seqnr; | |
344 | seq->lcs_fid.f_ver = 0; | |
345 | ||
346 | /* | |
347 | * Inform caller that sequence switch is performed to allow it | |
348 | * to setup FLD for it. | |
349 | */ | |
350 | rc = 1; | |
351 | ||
352 | seq_fid_alloc_fini(seq); | |
353 | break; | |
354 | } | |
355 | ||
356 | *fid = seq->lcs_fid; | |
357 | mutex_unlock(&seq->lcs_mutex); | |
358 | ||
359 | CDEBUG(D_INFO, "%s: Allocated FID "DFID"\n", seq->lcs_name, PFID(fid)); | |
0a3bdb00 | 360 | return rc; |
d7e09d03 PT |
361 | } |
362 | EXPORT_SYMBOL(seq_client_alloc_fid); | |
363 | ||
364 | /* | |
365 | * Finish the current sequence due to disconnect. | |
366 | * See mdc_import_event() | |
367 | */ | |
368 | void seq_client_flush(struct lu_client_seq *seq) | |
369 | { | |
370 | wait_queue_t link; | |
371 | ||
372 | LASSERT(seq != NULL); | |
9e795d35 | 373 | init_waitqueue_entry(&link, current); |
d7e09d03 PT |
374 | mutex_lock(&seq->lcs_mutex); |
375 | ||
376 | while (seq->lcs_update) { | |
377 | add_wait_queue(&seq->lcs_waitq, &link); | |
378 | set_current_state(TASK_UNINTERRUPTIBLE); | |
379 | mutex_unlock(&seq->lcs_mutex); | |
380 | ||
b3669a7f | 381 | schedule(); |
d7e09d03 PT |
382 | |
383 | mutex_lock(&seq->lcs_mutex); | |
384 | remove_wait_queue(&seq->lcs_waitq, &link); | |
385 | set_current_state(TASK_RUNNING); | |
386 | } | |
387 | ||
388 | fid_zero(&seq->lcs_fid); | |
389 | /** | |
390 | * this id shld not be used for seq range allocation. | |
391 | * set to -1 for dgb check. | |
392 | */ | |
393 | ||
394 | seq->lcs_space.lsr_index = -1; | |
395 | ||
396 | range_init(&seq->lcs_space); | |
397 | mutex_unlock(&seq->lcs_mutex); | |
398 | } | |
399 | EXPORT_SYMBOL(seq_client_flush); | |
400 | ||
56f4c5a8 LX |
401 | static void seq_client_proc_fini(struct lu_client_seq *seq) |
402 | { | |
f267cdb4 | 403 | #if defined (CONFIG_PROC_FS) |
56f4c5a8 LX |
404 | if (seq->lcs_proc_dir) { |
405 | if (!IS_ERR(seq->lcs_proc_dir)) | |
406 | lprocfs_remove(&seq->lcs_proc_dir); | |
407 | seq->lcs_proc_dir = NULL; | |
408 | } | |
f267cdb4 | 409 | #endif /* CONFIG_PROC_FS */ |
56f4c5a8 LX |
410 | } |
411 | ||
d7e09d03 PT |
412 | static int seq_client_proc_init(struct lu_client_seq *seq) |
413 | { | |
f267cdb4 | 414 | #if defined (CONFIG_PROC_FS) |
d7e09d03 | 415 | int rc; |
d7e09d03 PT |
416 | |
417 | seq->lcs_proc_dir = lprocfs_register(seq->lcs_name, | |
418 | seq_type_proc_dir, | |
419 | NULL, NULL); | |
420 | ||
421 | if (IS_ERR(seq->lcs_proc_dir)) { | |
422 | CERROR("%s: LProcFS failed in seq-init\n", | |
423 | seq->lcs_name); | |
424 | rc = PTR_ERR(seq->lcs_proc_dir); | |
0a3bdb00 | 425 | return rc; |
d7e09d03 PT |
426 | } |
427 | ||
428 | rc = lprocfs_add_vars(seq->lcs_proc_dir, | |
429 | seq_client_proc_list, seq); | |
430 | if (rc) { | |
5cbcd111 | 431 | CERROR("%s: Can't init sequence manager proc, rc %d\n", |
913827ee | 432 | seq->lcs_name, rc); |
d7e09d03 PT |
433 | GOTO(out_cleanup, rc); |
434 | } | |
435 | ||
0a3bdb00 | 436 | return 0; |
d7e09d03 PT |
437 | |
438 | out_cleanup: | |
439 | seq_client_proc_fini(seq); | |
440 | return rc; | |
d7e09d03 | 441 | |
f267cdb4 | 442 | #else /* CONFIG_PROC_FS */ |
d7e09d03 | 443 | return 0; |
d7e09d03 | 444 | #endif |
56f4c5a8 | 445 | } |
d7e09d03 PT |
446 | |
447 | int seq_client_init(struct lu_client_seq *seq, | |
448 | struct obd_export *exp, | |
449 | enum lu_cli_type type, | |
450 | const char *prefix, | |
451 | struct lu_server_seq *srv) | |
452 | { | |
453 | int rc; | |
d7e09d03 PT |
454 | |
455 | LASSERT(seq != NULL); | |
456 | LASSERT(prefix != NULL); | |
457 | ||
458 | seq->lcs_srv = srv; | |
459 | seq->lcs_type = type; | |
460 | ||
461 | mutex_init(&seq->lcs_mutex); | |
462 | if (type == LUSTRE_SEQ_METADATA) | |
463 | seq->lcs_width = LUSTRE_METADATA_SEQ_MAX_WIDTH; | |
464 | else | |
465 | seq->lcs_width = LUSTRE_DATA_SEQ_MAX_WIDTH; | |
466 | ||
467 | init_waitqueue_head(&seq->lcs_waitq); | |
468 | /* Make sure that things are clear before work is started. */ | |
469 | seq_client_flush(seq); | |
470 | ||
471 | if (exp != NULL) | |
472 | seq->lcs_exp = class_export_get(exp); | |
473 | else if (type == LUSTRE_SEQ_METADATA) | |
474 | LASSERT(seq->lcs_srv != NULL); | |
475 | ||
476 | snprintf(seq->lcs_name, sizeof(seq->lcs_name), | |
477 | "cli-%s", prefix); | |
478 | ||
479 | rc = seq_client_proc_init(seq); | |
480 | if (rc) | |
481 | seq_client_fini(seq); | |
0a3bdb00 | 482 | return rc; |
d7e09d03 PT |
483 | } |
484 | EXPORT_SYMBOL(seq_client_init); | |
485 | ||
486 | void seq_client_fini(struct lu_client_seq *seq) | |
487 | { | |
d7e09d03 PT |
488 | seq_client_proc_fini(seq); |
489 | ||
490 | if (seq->lcs_exp != NULL) { | |
491 | class_export_put(seq->lcs_exp); | |
492 | seq->lcs_exp = NULL; | |
493 | } | |
494 | ||
495 | seq->lcs_srv = NULL; | |
d7e09d03 PT |
496 | } |
497 | EXPORT_SYMBOL(seq_client_fini); | |
56f4c5a8 LX |
498 | |
499 | int client_fid_init(struct obd_device *obd, | |
500 | struct obd_export *exp, enum lu_cli_type type) | |
501 | { | |
502 | struct client_obd *cli = &obd->u.cli; | |
503 | char *prefix; | |
504 | int rc; | |
56f4c5a8 LX |
505 | |
506 | OBD_ALLOC_PTR(cli->cl_seq); | |
507 | if (cli->cl_seq == NULL) | |
0a3bdb00 | 508 | return -ENOMEM; |
56f4c5a8 LX |
509 | |
510 | OBD_ALLOC(prefix, MAX_OBD_NAME + 5); | |
511 | if (prefix == NULL) | |
512 | GOTO(out_free_seq, rc = -ENOMEM); | |
513 | ||
514 | snprintf(prefix, MAX_OBD_NAME + 5, "cli-%s", obd->obd_name); | |
515 | ||
516 | /* Init client side sequence-manager */ | |
517 | rc = seq_client_init(cli->cl_seq, exp, type, prefix, NULL); | |
518 | OBD_FREE(prefix, MAX_OBD_NAME + 5); | |
519 | if (rc) | |
520 | GOTO(out_free_seq, rc); | |
521 | ||
0a3bdb00 | 522 | return rc; |
56f4c5a8 LX |
523 | out_free_seq: |
524 | OBD_FREE_PTR(cli->cl_seq); | |
525 | cli->cl_seq = NULL; | |
526 | return rc; | |
527 | } | |
528 | EXPORT_SYMBOL(client_fid_init); | |
529 | ||
530 | int client_fid_fini(struct obd_device *obd) | |
531 | { | |
532 | struct client_obd *cli = &obd->u.cli; | |
56f4c5a8 LX |
533 | |
534 | if (cli->cl_seq != NULL) { | |
535 | seq_client_fini(cli->cl_seq); | |
536 | OBD_FREE_PTR(cli->cl_seq); | |
537 | cli->cl_seq = NULL; | |
538 | } | |
539 | ||
0a3bdb00 | 540 | return 0; |
56f4c5a8 LX |
541 | } |
542 | EXPORT_SYMBOL(client_fid_fini); | |
543 | ||
544 | struct proc_dir_entry *seq_type_proc_dir; | |
545 | ||
546 | static int __init fid_mod_init(void) | |
547 | { | |
548 | seq_type_proc_dir = lprocfs_register(LUSTRE_SEQ_NAME, | |
549 | proc_lustre_root, | |
550 | NULL, NULL); | |
5e1b887f | 551 | return PTR_ERR_OR_ZERO(seq_type_proc_dir); |
56f4c5a8 LX |
552 | } |
553 | ||
554 | static void __exit fid_mod_exit(void) | |
555 | { | |
556 | if (seq_type_proc_dir != NULL && !IS_ERR(seq_type_proc_dir)) { | |
557 | lprocfs_remove(&seq_type_proc_dir); | |
558 | seq_type_proc_dir = NULL; | |
559 | } | |
560 | } | |
561 | ||
562 | MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>"); | |
563 | MODULE_DESCRIPTION("Lustre FID Module"); | |
564 | MODULE_LICENSE("GPL"); | |
6960736c | 565 | MODULE_VERSION("0.1.0"); |
56f4c5a8 | 566 | |
6960736c GKH |
567 | module_init(fid_mod_init); |
568 | module_exit(fid_mod_exit); |