Commit | Line | Data |
---|---|---|
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) 2002, 2010, Oracle and/or its affiliates. All rights reserved. | |
28 | * Use is subject to license terms. | |
29 | * | |
30 | * Copyright (c) 2011, 2012, Intel Corporation. | |
31 | */ | |
32 | /* | |
33 | * This file is part of Lustre, http://www.lustre.org/ | |
34 | * Lustre is a trademark of Sun Microsystems, Inc. | |
35 | */ | |
36 | ||
37 | #define DEBUG_SUBSYSTEM S_OSC | |
38 | ||
9fdaf8c0 | 39 | #include "../../include/linux/libcfs/libcfs.h" |
d7e09d03 PT |
40 | |
41 | ||
3ee30015 GKH |
42 | #include "../include/lustre_dlm.h" |
43 | #include "../include/lustre_net.h" | |
44 | #include "../include/lustre/lustre_user.h" | |
45 | #include "../include/obd_cksum.h" | |
d7e09d03 | 46 | |
3ee30015 GKH |
47 | #include "../include/lustre_ha.h" |
48 | #include "../include/lprocfs_status.h" | |
3ee30015 GKH |
49 | #include "../include/lustre_debug.h" |
50 | #include "../include/lustre_param.h" | |
51 | #include "../include/lustre_fid.h" | |
dd45f477 | 52 | #include "../include/obd_class.h" |
d7e09d03 PT |
53 | #include "osc_internal.h" |
54 | #include "osc_cl_internal.h" | |
55 | ||
f024bad4 JH |
56 | struct osc_brw_async_args { |
57 | struct obdo *aa_oa; | |
58 | int aa_requested_nob; | |
59 | int aa_nio_count; | |
60 | u32 aa_page_count; | |
61 | int aa_resends; | |
62 | struct brw_page **aa_ppga; | |
63 | struct client_obd *aa_cli; | |
64 | struct list_head aa_oaps; | |
65 | struct list_head aa_exts; | |
66 | struct obd_capa *aa_ocapa; | |
67 | struct cl_req *aa_clerq; | |
68 | }; | |
69 | ||
70 | struct osc_async_args { | |
71 | struct obd_info *aa_oi; | |
72 | }; | |
73 | ||
74 | struct osc_setattr_args { | |
75 | struct obdo *sa_oa; | |
76 | obd_enqueue_update_f sa_upcall; | |
77 | void *sa_cookie; | |
78 | }; | |
79 | ||
80 | struct osc_fsync_args { | |
81 | struct obd_info *fa_oi; | |
82 | obd_enqueue_update_f fa_upcall; | |
83 | void *fa_cookie; | |
84 | }; | |
85 | ||
86 | struct osc_enqueue_args { | |
87 | struct obd_export *oa_exp; | |
88 | __u64 *oa_flags; | |
89 | obd_enqueue_update_f oa_upcall; | |
90 | void *oa_cookie; | |
91 | struct ost_lvb *oa_lvb; | |
92 | struct lustre_handle *oa_lockh; | |
93 | struct ldlm_enqueue_info *oa_ei; | |
94 | unsigned int oa_agl:1; | |
95 | }; | |
96 | ||
21aef7d9 | 97 | static void osc_release_ppga(struct brw_page **ppga, u32 count); |
d7e09d03 PT |
98 | static int brw_interpret(const struct lu_env *env, |
99 | struct ptlrpc_request *req, void *data, int rc); | |
100 | int osc_cleanup(struct obd_device *obd); | |
101 | ||
102 | /* Pack OSC object metadata for disk storage (LE byte order). */ | |
103 | static int osc_packmd(struct obd_export *exp, struct lov_mds_md **lmmp, | |
104 | struct lov_stripe_md *lsm) | |
105 | { | |
106 | int lmm_size; | |
d7e09d03 PT |
107 | |
108 | lmm_size = sizeof(**lmmp); | |
109 | if (lmmp == NULL) | |
0a3bdb00 | 110 | return lmm_size; |
d7e09d03 PT |
111 | |
112 | if (*lmmp != NULL && lsm == NULL) { | |
7795178d | 113 | kfree(*lmmp); |
d7e09d03 | 114 | *lmmp = NULL; |
0a3bdb00 | 115 | return 0; |
d7e09d03 | 116 | } else if (unlikely(lsm != NULL && ostid_id(&lsm->lsm_oi) == 0)) { |
0a3bdb00 | 117 | return -EBADF; |
d7e09d03 PT |
118 | } |
119 | ||
120 | if (*lmmp == NULL) { | |
7795178d | 121 | *lmmp = kzalloc(lmm_size, GFP_NOFS); |
d7e09d03 | 122 | if (*lmmp == NULL) |
0a3bdb00 | 123 | return -ENOMEM; |
d7e09d03 PT |
124 | } |
125 | ||
126 | if (lsm) | |
127 | ostid_cpu_to_le(&lsm->lsm_oi, &(*lmmp)->lmm_oi); | |
128 | ||
0a3bdb00 | 129 | return lmm_size; |
d7e09d03 PT |
130 | } |
131 | ||
132 | /* Unpack OSC object metadata from disk storage (LE byte order). */ | |
133 | static int osc_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp, | |
134 | struct lov_mds_md *lmm, int lmm_bytes) | |
135 | { | |
136 | int lsm_size; | |
137 | struct obd_import *imp = class_exp2cliimp(exp); | |
d7e09d03 PT |
138 | |
139 | if (lmm != NULL) { | |
140 | if (lmm_bytes < sizeof(*lmm)) { | |
141 | CERROR("%s: lov_mds_md too small: %d, need %d\n", | |
142 | exp->exp_obd->obd_name, lmm_bytes, | |
143 | (int)sizeof(*lmm)); | |
0a3bdb00 | 144 | return -EINVAL; |
d7e09d03 PT |
145 | } |
146 | /* XXX LOV_MAGIC etc check? */ | |
147 | ||
148 | if (unlikely(ostid_id(&lmm->lmm_oi) == 0)) { | |
149 | CERROR("%s: zero lmm_object_id: rc = %d\n", | |
150 | exp->exp_obd->obd_name, -EINVAL); | |
0a3bdb00 | 151 | return -EINVAL; |
d7e09d03 PT |
152 | } |
153 | } | |
154 | ||
155 | lsm_size = lov_stripe_md_size(1); | |
156 | if (lsmp == NULL) | |
0a3bdb00 | 157 | return lsm_size; |
d7e09d03 PT |
158 | |
159 | if (*lsmp != NULL && lmm == NULL) { | |
7795178d JL |
160 | kfree((*lsmp)->lsm_oinfo[0]); |
161 | kfree(*lsmp); | |
d7e09d03 | 162 | *lsmp = NULL; |
0a3bdb00 | 163 | return 0; |
d7e09d03 PT |
164 | } |
165 | ||
166 | if (*lsmp == NULL) { | |
7795178d | 167 | *lsmp = kzalloc(lsm_size, GFP_NOFS); |
d7e09d03 | 168 | if (unlikely(*lsmp == NULL)) |
0a3bdb00 | 169 | return -ENOMEM; |
7795178d JL |
170 | (*lsmp)->lsm_oinfo[0] = kzalloc(sizeof(struct lov_oinfo), |
171 | GFP_NOFS); | |
d7e09d03 | 172 | if (unlikely((*lsmp)->lsm_oinfo[0] == NULL)) { |
7795178d | 173 | kfree(*lsmp); |
0a3bdb00 | 174 | return -ENOMEM; |
d7e09d03 PT |
175 | } |
176 | loi_init((*lsmp)->lsm_oinfo[0]); | |
177 | } else if (unlikely(ostid_id(&(*lsmp)->lsm_oi) == 0)) { | |
0a3bdb00 | 178 | return -EBADF; |
d7e09d03 PT |
179 | } |
180 | ||
181 | if (lmm != NULL) | |
182 | /* XXX zero *lsmp? */ | |
183 | ostid_le_to_cpu(&lmm->lmm_oi, &(*lsmp)->lsm_oi); | |
184 | ||
185 | if (imp != NULL && | |
186 | (imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_MAXBYTES)) | |
187 | (*lsmp)->lsm_maxbytes = imp->imp_connect_data.ocd_maxbytes; | |
188 | else | |
189 | (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES; | |
190 | ||
0a3bdb00 | 191 | return lsm_size; |
d7e09d03 PT |
192 | } |
193 | ||
194 | static inline void osc_pack_capa(struct ptlrpc_request *req, | |
195 | struct ost_body *body, void *capa) | |
196 | { | |
197 | struct obd_capa *oc = (struct obd_capa *)capa; | |
198 | struct lustre_capa *c; | |
199 | ||
200 | if (!capa) | |
201 | return; | |
202 | ||
203 | c = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1); | |
204 | LASSERT(c); | |
205 | capa_cpy(c, oc); | |
206 | body->oa.o_valid |= OBD_MD_FLOSSCAPA; | |
207 | DEBUG_CAPA(D_SEC, c, "pack"); | |
208 | } | |
209 | ||
210 | static inline void osc_pack_req_body(struct ptlrpc_request *req, | |
211 | struct obd_info *oinfo) | |
212 | { | |
213 | struct ost_body *body; | |
214 | ||
215 | body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); | |
216 | LASSERT(body); | |
217 | ||
3b2f75fd | 218 | lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, |
219 | oinfo->oi_oa); | |
d7e09d03 PT |
220 | osc_pack_capa(req, body, oinfo->oi_capa); |
221 | } | |
222 | ||
223 | static inline void osc_set_capa_size(struct ptlrpc_request *req, | |
224 | const struct req_msg_field *field, | |
225 | struct obd_capa *oc) | |
226 | { | |
227 | if (oc == NULL) | |
228 | req_capsule_set_size(&req->rq_pill, field, RCL_CLIENT, 0); | |
229 | else | |
230 | /* it is already calculated as sizeof struct obd_capa */ | |
231 | ; | |
232 | } | |
233 | ||
234 | static int osc_getattr_interpret(const struct lu_env *env, | |
235 | struct ptlrpc_request *req, | |
236 | struct osc_async_args *aa, int rc) | |
237 | { | |
238 | struct ost_body *body; | |
d7e09d03 PT |
239 | |
240 | if (rc != 0) | |
26c4ea46 | 241 | goto out; |
d7e09d03 PT |
242 | |
243 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
244 | if (body) { | |
245 | CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode); | |
3b2f75fd | 246 | lustre_get_wire_obdo(&req->rq_import->imp_connect_data, |
247 | aa->aa_oi->oi_oa, &body->oa); | |
d7e09d03 PT |
248 | |
249 | /* This should really be sent by the OST */ | |
250 | aa->aa_oi->oi_oa->o_blksize = DT_MAX_BRW_SIZE; | |
251 | aa->aa_oi->oi_oa->o_valid |= OBD_MD_FLBLKSZ; | |
252 | } else { | |
253 | CDEBUG(D_INFO, "can't unpack ost_body\n"); | |
254 | rc = -EPROTO; | |
255 | aa->aa_oi->oi_oa->o_valid = 0; | |
256 | } | |
257 | out: | |
258 | rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc); | |
0a3bdb00 | 259 | return rc; |
d7e09d03 PT |
260 | } |
261 | ||
262 | static int osc_getattr_async(struct obd_export *exp, struct obd_info *oinfo, | |
263 | struct ptlrpc_request_set *set) | |
264 | { | |
265 | struct ptlrpc_request *req; | |
266 | struct osc_async_args *aa; | |
267 | int rc; | |
d7e09d03 PT |
268 | |
269 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR); | |
270 | if (req == NULL) | |
0a3bdb00 | 271 | return -ENOMEM; |
d7e09d03 PT |
272 | |
273 | osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa); | |
274 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR); | |
275 | if (rc) { | |
276 | ptlrpc_request_free(req); | |
0a3bdb00 | 277 | return rc; |
d7e09d03 PT |
278 | } |
279 | ||
280 | osc_pack_req_body(req, oinfo); | |
281 | ||
282 | ptlrpc_request_set_replen(req); | |
283 | req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_getattr_interpret; | |
284 | ||
285 | CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args)); | |
286 | aa = ptlrpc_req_async_args(req); | |
287 | aa->aa_oi = oinfo; | |
288 | ||
289 | ptlrpc_set_add_req(set, req); | |
0a3bdb00 | 290 | return 0; |
d7e09d03 PT |
291 | } |
292 | ||
293 | static int osc_getattr(const struct lu_env *env, struct obd_export *exp, | |
294 | struct obd_info *oinfo) | |
295 | { | |
296 | struct ptlrpc_request *req; | |
297 | struct ost_body *body; | |
298 | int rc; | |
d7e09d03 PT |
299 | |
300 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR); | |
301 | if (req == NULL) | |
0a3bdb00 | 302 | return -ENOMEM; |
d7e09d03 PT |
303 | |
304 | osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa); | |
305 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR); | |
306 | if (rc) { | |
307 | ptlrpc_request_free(req); | |
0a3bdb00 | 308 | return rc; |
d7e09d03 PT |
309 | } |
310 | ||
311 | osc_pack_req_body(req, oinfo); | |
312 | ||
313 | ptlrpc_request_set_replen(req); | |
314 | ||
315 | rc = ptlrpc_queue_wait(req); | |
316 | if (rc) | |
26c4ea46 | 317 | goto out; |
d7e09d03 PT |
318 | |
319 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
26c4ea46 TJ |
320 | if (body == NULL) { |
321 | rc = -EPROTO; | |
322 | goto out; | |
323 | } | |
d7e09d03 PT |
324 | |
325 | CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode); | |
3b2f75fd | 326 | lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oinfo->oi_oa, |
327 | &body->oa); | |
d7e09d03 PT |
328 | |
329 | oinfo->oi_oa->o_blksize = cli_brw_size(exp->exp_obd); | |
330 | oinfo->oi_oa->o_valid |= OBD_MD_FLBLKSZ; | |
331 | ||
d7e09d03 PT |
332 | out: |
333 | ptlrpc_req_finished(req); | |
334 | return rc; | |
335 | } | |
336 | ||
337 | static int osc_setattr(const struct lu_env *env, struct obd_export *exp, | |
338 | struct obd_info *oinfo, struct obd_trans_info *oti) | |
339 | { | |
340 | struct ptlrpc_request *req; | |
341 | struct ost_body *body; | |
342 | int rc; | |
d7e09d03 PT |
343 | |
344 | LASSERT(oinfo->oi_oa->o_valid & OBD_MD_FLGROUP); | |
345 | ||
346 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR); | |
347 | if (req == NULL) | |
0a3bdb00 | 348 | return -ENOMEM; |
d7e09d03 PT |
349 | |
350 | osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa); | |
351 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR); | |
352 | if (rc) { | |
353 | ptlrpc_request_free(req); | |
0a3bdb00 | 354 | return rc; |
d7e09d03 PT |
355 | } |
356 | ||
357 | osc_pack_req_body(req, oinfo); | |
358 | ||
359 | ptlrpc_request_set_replen(req); | |
360 | ||
361 | rc = ptlrpc_queue_wait(req); | |
362 | if (rc) | |
26c4ea46 | 363 | goto out; |
d7e09d03 PT |
364 | |
365 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
26c4ea46 TJ |
366 | if (body == NULL) { |
367 | rc = -EPROTO; | |
368 | goto out; | |
369 | } | |
d7e09d03 | 370 | |
3b2f75fd | 371 | lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oinfo->oi_oa, |
372 | &body->oa); | |
d7e09d03 | 373 | |
d7e09d03 PT |
374 | out: |
375 | ptlrpc_req_finished(req); | |
0a3bdb00 | 376 | return rc; |
d7e09d03 PT |
377 | } |
378 | ||
379 | static int osc_setattr_interpret(const struct lu_env *env, | |
380 | struct ptlrpc_request *req, | |
381 | struct osc_setattr_args *sa, int rc) | |
382 | { | |
383 | struct ost_body *body; | |
d7e09d03 PT |
384 | |
385 | if (rc != 0) | |
26c4ea46 | 386 | goto out; |
d7e09d03 PT |
387 | |
388 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
26c4ea46 TJ |
389 | if (body == NULL) { |
390 | rc = -EPROTO; | |
391 | goto out; | |
392 | } | |
d7e09d03 | 393 | |
3b2f75fd | 394 | lustre_get_wire_obdo(&req->rq_import->imp_connect_data, sa->sa_oa, |
395 | &body->oa); | |
d7e09d03 PT |
396 | out: |
397 | rc = sa->sa_upcall(sa->sa_cookie, rc); | |
0a3bdb00 | 398 | return rc; |
d7e09d03 PT |
399 | } |
400 | ||
401 | int osc_setattr_async_base(struct obd_export *exp, struct obd_info *oinfo, | |
402 | struct obd_trans_info *oti, | |
403 | obd_enqueue_update_f upcall, void *cookie, | |
404 | struct ptlrpc_request_set *rqset) | |
405 | { | |
406 | struct ptlrpc_request *req; | |
407 | struct osc_setattr_args *sa; | |
408 | int rc; | |
d7e09d03 PT |
409 | |
410 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR); | |
411 | if (req == NULL) | |
0a3bdb00 | 412 | return -ENOMEM; |
d7e09d03 PT |
413 | |
414 | osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa); | |
415 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR); | |
416 | if (rc) { | |
417 | ptlrpc_request_free(req); | |
0a3bdb00 | 418 | return rc; |
d7e09d03 PT |
419 | } |
420 | ||
421 | if (oti && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE) | |
422 | oinfo->oi_oa->o_lcookie = *oti->oti_logcookies; | |
423 | ||
424 | osc_pack_req_body(req, oinfo); | |
425 | ||
426 | ptlrpc_request_set_replen(req); | |
427 | ||
428 | /* do mds to ost setattr asynchronously */ | |
429 | if (!rqset) { | |
430 | /* Do not wait for response. */ | |
431 | ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1); | |
432 | } else { | |
433 | req->rq_interpret_reply = | |
434 | (ptlrpc_interpterer_t)osc_setattr_interpret; | |
435 | ||
436 | CLASSERT (sizeof(*sa) <= sizeof(req->rq_async_args)); | |
437 | sa = ptlrpc_req_async_args(req); | |
438 | sa->sa_oa = oinfo->oi_oa; | |
439 | sa->sa_upcall = upcall; | |
440 | sa->sa_cookie = cookie; | |
441 | ||
442 | if (rqset == PTLRPCD_SET) | |
443 | ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1); | |
444 | else | |
445 | ptlrpc_set_add_req(rqset, req); | |
446 | } | |
447 | ||
0a3bdb00 | 448 | return 0; |
d7e09d03 PT |
449 | } |
450 | ||
451 | static int osc_setattr_async(struct obd_export *exp, struct obd_info *oinfo, | |
452 | struct obd_trans_info *oti, | |
453 | struct ptlrpc_request_set *rqset) | |
454 | { | |
455 | return osc_setattr_async_base(exp, oinfo, oti, | |
456 | oinfo->oi_cb_up, oinfo, rqset); | |
457 | } | |
458 | ||
459 | int osc_real_create(struct obd_export *exp, struct obdo *oa, | |
460 | struct lov_stripe_md **ea, struct obd_trans_info *oti) | |
461 | { | |
462 | struct ptlrpc_request *req; | |
463 | struct ost_body *body; | |
464 | struct lov_stripe_md *lsm; | |
465 | int rc; | |
d7e09d03 PT |
466 | |
467 | LASSERT(oa); | |
468 | LASSERT(ea); | |
469 | ||
470 | lsm = *ea; | |
471 | if (!lsm) { | |
472 | rc = obd_alloc_memmd(exp, &lsm); | |
473 | if (rc < 0) | |
0a3bdb00 | 474 | return rc; |
d7e09d03 PT |
475 | } |
476 | ||
477 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_CREATE); | |
26c4ea46 TJ |
478 | if (req == NULL) { |
479 | rc = -ENOMEM; | |
480 | goto out; | |
481 | } | |
d7e09d03 PT |
482 | |
483 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_CREATE); | |
484 | if (rc) { | |
485 | ptlrpc_request_free(req); | |
26c4ea46 | 486 | goto out; |
d7e09d03 PT |
487 | } |
488 | ||
489 | body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); | |
490 | LASSERT(body); | |
3b2f75fd | 491 | |
492 | lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa); | |
d7e09d03 PT |
493 | |
494 | ptlrpc_request_set_replen(req); | |
495 | ||
496 | if ((oa->o_valid & OBD_MD_FLFLAGS) && | |
497 | oa->o_flags == OBD_FL_DELORPHAN) { | |
498 | DEBUG_REQ(D_HA, req, | |
499 | "delorphan from OST integration"); | |
500 | /* Don't resend the delorphan req */ | |
501 | req->rq_no_resend = req->rq_no_delay = 1; | |
502 | } | |
503 | ||
504 | rc = ptlrpc_queue_wait(req); | |
505 | if (rc) | |
26c4ea46 | 506 | goto out_req; |
d7e09d03 PT |
507 | |
508 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
26c4ea46 TJ |
509 | if (body == NULL) { |
510 | rc = -EPROTO; | |
511 | goto out_req; | |
512 | } | |
d7e09d03 | 513 | |
3b2f75fd | 514 | CDEBUG(D_INFO, "oa flags %x\n", oa->o_flags); |
515 | lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oa, &body->oa); | |
d7e09d03 PT |
516 | |
517 | oa->o_blksize = cli_brw_size(exp->exp_obd); | |
518 | oa->o_valid |= OBD_MD_FLBLKSZ; | |
519 | ||
520 | /* XXX LOV STACKING: the lsm that is passed to us from LOV does not | |
521 | * have valid lsm_oinfo data structs, so don't go touching that. | |
522 | * This needs to be fixed in a big way. | |
523 | */ | |
524 | lsm->lsm_oi = oa->o_oi; | |
525 | *ea = lsm; | |
526 | ||
527 | if (oti != NULL) { | |
528 | oti->oti_transno = lustre_msg_get_transno(req->rq_repmsg); | |
529 | ||
530 | if (oa->o_valid & OBD_MD_FLCOOKIE) { | |
531 | if (!oti->oti_logcookies) | |
532 | oti_alloc_cookies(oti, 1); | |
533 | *oti->oti_logcookies = oa->o_lcookie; | |
534 | } | |
535 | } | |
536 | ||
f537dd2c | 537 | CDEBUG(D_HA, "transno: %lld\n", |
d7e09d03 PT |
538 | lustre_msg_get_transno(req->rq_repmsg)); |
539 | out_req: | |
540 | ptlrpc_req_finished(req); | |
541 | out: | |
542 | if (rc && !*ea) | |
543 | obd_free_memmd(exp, &lsm); | |
0a3bdb00 | 544 | return rc; |
d7e09d03 PT |
545 | } |
546 | ||
547 | int osc_punch_base(struct obd_export *exp, struct obd_info *oinfo, | |
548 | obd_enqueue_update_f upcall, void *cookie, | |
549 | struct ptlrpc_request_set *rqset) | |
550 | { | |
551 | struct ptlrpc_request *req; | |
552 | struct osc_setattr_args *sa; | |
553 | struct ost_body *body; | |
554 | int rc; | |
d7e09d03 PT |
555 | |
556 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_PUNCH); | |
557 | if (req == NULL) | |
0a3bdb00 | 558 | return -ENOMEM; |
d7e09d03 PT |
559 | |
560 | osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa); | |
561 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_PUNCH); | |
562 | if (rc) { | |
563 | ptlrpc_request_free(req); | |
0a3bdb00 | 564 | return rc; |
d7e09d03 PT |
565 | } |
566 | req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */ | |
567 | ptlrpc_at_set_req_timeout(req); | |
568 | ||
569 | body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); | |
570 | LASSERT(body); | |
3b2f75fd | 571 | lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, |
572 | oinfo->oi_oa); | |
d7e09d03 PT |
573 | osc_pack_capa(req, body, oinfo->oi_capa); |
574 | ||
575 | ptlrpc_request_set_replen(req); | |
576 | ||
577 | req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_setattr_interpret; | |
578 | CLASSERT (sizeof(*sa) <= sizeof(req->rq_async_args)); | |
579 | sa = ptlrpc_req_async_args(req); | |
580 | sa->sa_oa = oinfo->oi_oa; | |
581 | sa->sa_upcall = upcall; | |
582 | sa->sa_cookie = cookie; | |
583 | if (rqset == PTLRPCD_SET) | |
584 | ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1); | |
585 | else | |
586 | ptlrpc_set_add_req(rqset, req); | |
587 | ||
0a3bdb00 | 588 | return 0; |
d7e09d03 PT |
589 | } |
590 | ||
d7e09d03 PT |
591 | static int osc_sync_interpret(const struct lu_env *env, |
592 | struct ptlrpc_request *req, | |
593 | void *arg, int rc) | |
594 | { | |
595 | struct osc_fsync_args *fa = arg; | |
596 | struct ost_body *body; | |
d7e09d03 PT |
597 | |
598 | if (rc) | |
26c4ea46 | 599 | goto out; |
d7e09d03 PT |
600 | |
601 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
602 | if (body == NULL) { | |
603 | CERROR ("can't unpack ost_body\n"); | |
26c4ea46 TJ |
604 | rc = -EPROTO; |
605 | goto out; | |
d7e09d03 PT |
606 | } |
607 | ||
608 | *fa->fa_oi->oi_oa = body->oa; | |
609 | out: | |
610 | rc = fa->fa_upcall(fa->fa_cookie, rc); | |
0a3bdb00 | 611 | return rc; |
d7e09d03 PT |
612 | } |
613 | ||
614 | int osc_sync_base(struct obd_export *exp, struct obd_info *oinfo, | |
615 | obd_enqueue_update_f upcall, void *cookie, | |
616 | struct ptlrpc_request_set *rqset) | |
617 | { | |
618 | struct ptlrpc_request *req; | |
619 | struct ost_body *body; | |
620 | struct osc_fsync_args *fa; | |
621 | int rc; | |
d7e09d03 PT |
622 | |
623 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SYNC); | |
624 | if (req == NULL) | |
0a3bdb00 | 625 | return -ENOMEM; |
d7e09d03 PT |
626 | |
627 | osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa); | |
628 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SYNC); | |
629 | if (rc) { | |
630 | ptlrpc_request_free(req); | |
0a3bdb00 | 631 | return rc; |
d7e09d03 PT |
632 | } |
633 | ||
634 | /* overload the size and blocks fields in the oa with start/end */ | |
635 | body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); | |
636 | LASSERT(body); | |
3b2f75fd | 637 | lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, |
638 | oinfo->oi_oa); | |
d7e09d03 PT |
639 | osc_pack_capa(req, body, oinfo->oi_capa); |
640 | ||
641 | ptlrpc_request_set_replen(req); | |
642 | req->rq_interpret_reply = osc_sync_interpret; | |
643 | ||
644 | CLASSERT(sizeof(*fa) <= sizeof(req->rq_async_args)); | |
645 | fa = ptlrpc_req_async_args(req); | |
646 | fa->fa_oi = oinfo; | |
647 | fa->fa_upcall = upcall; | |
648 | fa->fa_cookie = cookie; | |
649 | ||
650 | if (rqset == PTLRPCD_SET) | |
651 | ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1); | |
652 | else | |
653 | ptlrpc_set_add_req(rqset, req); | |
654 | ||
0a3bdb00 | 655 | return 0; |
d7e09d03 PT |
656 | } |
657 | ||
d7e09d03 PT |
658 | /* Find and cancel locally locks matched by @mode in the resource found by |
659 | * @objid. Found locks are added into @cancel list. Returns the amount of | |
660 | * locks added to @cancels list. */ | |
661 | static int osc_resource_get_unused(struct obd_export *exp, struct obdo *oa, | |
662 | struct list_head *cancels, | |
875332d4 | 663 | ldlm_mode_t mode, __u64 lock_flags) |
d7e09d03 PT |
664 | { |
665 | struct ldlm_namespace *ns = exp->exp_obd->obd_namespace; | |
666 | struct ldlm_res_id res_id; | |
667 | struct ldlm_resource *res; | |
668 | int count; | |
d7e09d03 PT |
669 | |
670 | /* Return, i.e. cancel nothing, only if ELC is supported (flag in | |
671 | * export) but disabled through procfs (flag in NS). | |
672 | * | |
673 | * This distinguishes from a case when ELC is not supported originally, | |
674 | * when we still want to cancel locks in advance and just cancel them | |
675 | * locally, without sending any RPC. */ | |
676 | if (exp_connect_cancelset(exp) && !ns_connect_cancelset(ns)) | |
0a3bdb00 | 677 | return 0; |
d7e09d03 PT |
678 | |
679 | ostid_build_res_name(&oa->o_oi, &res_id); | |
680 | res = ldlm_resource_get(ns, NULL, &res_id, 0, 0); | |
681 | if (res == NULL) | |
0a3bdb00 | 682 | return 0; |
d7e09d03 PT |
683 | |
684 | LDLM_RESOURCE_ADDREF(res); | |
685 | count = ldlm_cancel_resource_local(res, cancels, NULL, mode, | |
686 | lock_flags, 0, NULL); | |
687 | LDLM_RESOURCE_DELREF(res); | |
688 | ldlm_resource_putref(res); | |
0a3bdb00 | 689 | return count; |
d7e09d03 PT |
690 | } |
691 | ||
692 | static int osc_destroy_interpret(const struct lu_env *env, | |
693 | struct ptlrpc_request *req, void *data, | |
694 | int rc) | |
695 | { | |
696 | struct client_obd *cli = &req->rq_import->imp_obd->u.cli; | |
697 | ||
698 | atomic_dec(&cli->cl_destroy_in_flight); | |
699 | wake_up(&cli->cl_destroy_waitq); | |
700 | return 0; | |
701 | } | |
702 | ||
703 | static int osc_can_send_destroy(struct client_obd *cli) | |
704 | { | |
705 | if (atomic_inc_return(&cli->cl_destroy_in_flight) <= | |
706 | cli->cl_max_rpcs_in_flight) { | |
707 | /* The destroy request can be sent */ | |
708 | return 1; | |
709 | } | |
710 | if (atomic_dec_return(&cli->cl_destroy_in_flight) < | |
711 | cli->cl_max_rpcs_in_flight) { | |
712 | /* | |
713 | * The counter has been modified between the two atomic | |
714 | * operations. | |
715 | */ | |
716 | wake_up(&cli->cl_destroy_waitq); | |
717 | } | |
718 | return 0; | |
719 | } | |
720 | ||
721 | int osc_create(const struct lu_env *env, struct obd_export *exp, | |
722 | struct obdo *oa, struct lov_stripe_md **ea, | |
723 | struct obd_trans_info *oti) | |
724 | { | |
725 | int rc = 0; | |
d7e09d03 PT |
726 | |
727 | LASSERT(oa); | |
728 | LASSERT(ea); | |
729 | LASSERT(oa->o_valid & OBD_MD_FLGROUP); | |
730 | ||
731 | if ((oa->o_valid & OBD_MD_FLFLAGS) && | |
732 | oa->o_flags == OBD_FL_RECREATE_OBJS) { | |
0a3bdb00 | 733 | return osc_real_create(exp, oa, ea, oti); |
d7e09d03 PT |
734 | } |
735 | ||
736 | if (!fid_seq_is_mdt(ostid_seq(&oa->o_oi))) | |
0a3bdb00 | 737 | return osc_real_create(exp, oa, ea, oti); |
d7e09d03 PT |
738 | |
739 | /* we should not get here anymore */ | |
740 | LBUG(); | |
741 | ||
0a3bdb00 | 742 | return rc; |
d7e09d03 PT |
743 | } |
744 | ||
745 | /* Destroy requests can be async always on the client, and we don't even really | |
746 | * care about the return code since the client cannot do anything at all about | |
747 | * a destroy failure. | |
748 | * When the MDS is unlinking a filename, it saves the file objects into a | |
749 | * recovery llog, and these object records are cancelled when the OST reports | |
750 | * they were destroyed and sync'd to disk (i.e. transaction committed). | |
751 | * If the client dies, or the OST is down when the object should be destroyed, | |
752 | * the records are not cancelled, and when the OST reconnects to the MDS next, | |
753 | * it will retrieve the llog unlink logs and then sends the log cancellation | |
754 | * cookies to the MDS after committing destroy transactions. */ | |
755 | static int osc_destroy(const struct lu_env *env, struct obd_export *exp, | |
756 | struct obdo *oa, struct lov_stripe_md *ea, | |
757 | struct obd_trans_info *oti, struct obd_export *md_export, | |
758 | void *capa) | |
759 | { | |
760 | struct client_obd *cli = &exp->exp_obd->u.cli; | |
761 | struct ptlrpc_request *req; | |
762 | struct ost_body *body; | |
763 | LIST_HEAD(cancels); | |
764 | int rc, count; | |
d7e09d03 PT |
765 | |
766 | if (!oa) { | |
767 | CDEBUG(D_INFO, "oa NULL\n"); | |
0a3bdb00 | 768 | return -EINVAL; |
d7e09d03 PT |
769 | } |
770 | ||
771 | count = osc_resource_get_unused(exp, oa, &cancels, LCK_PW, | |
772 | LDLM_FL_DISCARD_DATA); | |
773 | ||
774 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_DESTROY); | |
775 | if (req == NULL) { | |
776 | ldlm_lock_list_put(&cancels, l_bl_ast, count); | |
0a3bdb00 | 777 | return -ENOMEM; |
d7e09d03 PT |
778 | } |
779 | ||
780 | osc_set_capa_size(req, &RMF_CAPA1, (struct obd_capa *)capa); | |
781 | rc = ldlm_prep_elc_req(exp, req, LUSTRE_OST_VERSION, OST_DESTROY, | |
782 | 0, &cancels, count); | |
783 | if (rc) { | |
784 | ptlrpc_request_free(req); | |
0a3bdb00 | 785 | return rc; |
d7e09d03 PT |
786 | } |
787 | ||
788 | req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */ | |
789 | ptlrpc_at_set_req_timeout(req); | |
790 | ||
791 | if (oti != NULL && oa->o_valid & OBD_MD_FLCOOKIE) | |
792 | oa->o_lcookie = *oti->oti_logcookies; | |
793 | body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); | |
794 | LASSERT(body); | |
3b2f75fd | 795 | lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa); |
d7e09d03 PT |
796 | |
797 | osc_pack_capa(req, body, (struct obd_capa *)capa); | |
798 | ptlrpc_request_set_replen(req); | |
799 | ||
11d66e89 | 800 | /* If osc_destroy is for destroying the unlink orphan, |
d7e09d03 PT |
801 | * sent from MDT to OST, which should not be blocked here, |
802 | * because the process might be triggered by ptlrpcd, and | |
803 | * it is not good to block ptlrpcd thread (b=16006)*/ | |
804 | if (!(oa->o_flags & OBD_FL_DELORPHAN)) { | |
805 | req->rq_interpret_reply = osc_destroy_interpret; | |
806 | if (!osc_can_send_destroy(cli)) { | |
807 | struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, | |
808 | NULL); | |
809 | ||
810 | /* | |
811 | * Wait until the number of on-going destroy RPCs drops | |
812 | * under max_rpc_in_flight | |
813 | */ | |
814 | l_wait_event_exclusive(cli->cl_destroy_waitq, | |
815 | osc_can_send_destroy(cli), &lwi); | |
816 | } | |
817 | } | |
818 | ||
819 | /* Do not wait for response */ | |
820 | ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1); | |
0a3bdb00 | 821 | return 0; |
d7e09d03 PT |
822 | } |
823 | ||
824 | static void osc_announce_cached(struct client_obd *cli, struct obdo *oa, | |
825 | long writing_bytes) | |
826 | { | |
21aef7d9 | 827 | u32 bits = OBD_MD_FLBLOCKS|OBD_MD_FLGRANT; |
d7e09d03 PT |
828 | |
829 | LASSERT(!(oa->o_valid & bits)); | |
830 | ||
831 | oa->o_valid |= bits; | |
832 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
833 | oa->o_dirty = cli->cl_dirty; | |
834 | if (unlikely(cli->cl_dirty - cli->cl_dirty_transit > | |
835 | cli->cl_dirty_max)) { | |
836 | CERROR("dirty %lu - %lu > dirty_max %lu\n", | |
837 | cli->cl_dirty, cli->cl_dirty_transit, cli->cl_dirty_max); | |
838 | oa->o_undirty = 0; | |
c52f69c5 | 839 | } else if (unlikely(atomic_read(&obd_dirty_pages) - |
d7e09d03 PT |
840 | atomic_read(&obd_dirty_transit_pages) > |
841 | (long)(obd_max_dirty_pages + 1))) { | |
842 | /* The atomic_read() allowing the atomic_inc() are | |
843 | * not covered by a lock thus they may safely race and trip | |
844 | * this CERROR() unless we add in a small fudge factor (+1). */ | |
c52f69c5 | 845 | CERROR("dirty %d - %d > system dirty_max %d\n", |
d7e09d03 PT |
846 | atomic_read(&obd_dirty_pages), |
847 | atomic_read(&obd_dirty_transit_pages), | |
848 | obd_max_dirty_pages); | |
849 | oa->o_undirty = 0; | |
850 | } else if (unlikely(cli->cl_dirty_max - cli->cl_dirty > 0x7fffffff)) { | |
851 | CERROR("dirty %lu - dirty_max %lu too big???\n", | |
852 | cli->cl_dirty, cli->cl_dirty_max); | |
853 | oa->o_undirty = 0; | |
854 | } else { | |
855 | long max_in_flight = (cli->cl_max_pages_per_rpc << | |
856 | PAGE_CACHE_SHIFT)* | |
857 | (cli->cl_max_rpcs_in_flight + 1); | |
858 | oa->o_undirty = max(cli->cl_dirty_max, max_in_flight); | |
859 | } | |
860 | oa->o_grant = cli->cl_avail_grant + cli->cl_reserved_grant; | |
861 | oa->o_dropped = cli->cl_lost_grant; | |
862 | cli->cl_lost_grant = 0; | |
863 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
1d8cb70c | 864 | CDEBUG(D_CACHE, "dirty: %llu undirty: %u dropped %u grant: %llu\n", |
d7e09d03 PT |
865 | oa->o_dirty, oa->o_undirty, oa->o_dropped, oa->o_grant); |
866 | ||
867 | } | |
868 | ||
869 | void osc_update_next_shrink(struct client_obd *cli) | |
870 | { | |
871 | cli->cl_next_shrink_grant = | |
872 | cfs_time_shift(cli->cl_grant_shrink_interval); | |
873 | CDEBUG(D_CACHE, "next time %ld to shrink grant \n", | |
874 | cli->cl_next_shrink_grant); | |
875 | } | |
876 | ||
21aef7d9 | 877 | static void __osc_update_grant(struct client_obd *cli, u64 grant) |
d7e09d03 PT |
878 | { |
879 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
880 | cli->cl_avail_grant += grant; | |
881 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
882 | } | |
883 | ||
884 | static void osc_update_grant(struct client_obd *cli, struct ost_body *body) | |
885 | { | |
886 | if (body->oa.o_valid & OBD_MD_FLGRANT) { | |
b0f5aad5 | 887 | CDEBUG(D_CACHE, "got %llu extra grant\n", body->oa.o_grant); |
d7e09d03 PT |
888 | __osc_update_grant(cli, body->oa.o_grant); |
889 | } | |
890 | } | |
891 | ||
892 | static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp, | |
21aef7d9 | 893 | u32 keylen, void *key, u32 vallen, |
d7e09d03 PT |
894 | void *val, struct ptlrpc_request_set *set); |
895 | ||
896 | static int osc_shrink_grant_interpret(const struct lu_env *env, | |
897 | struct ptlrpc_request *req, | |
898 | void *aa, int rc) | |
899 | { | |
900 | struct client_obd *cli = &req->rq_import->imp_obd->u.cli; | |
f024bad4 | 901 | struct obdo *oa = ((struct osc_brw_async_args *)aa)->aa_oa; |
d7e09d03 PT |
902 | struct ost_body *body; |
903 | ||
904 | if (rc != 0) { | |
905 | __osc_update_grant(cli, oa->o_grant); | |
26c4ea46 | 906 | goto out; |
d7e09d03 PT |
907 | } |
908 | ||
909 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
910 | LASSERT(body); | |
911 | osc_update_grant(cli, body); | |
912 | out: | |
913 | OBDO_FREE(oa); | |
914 | return rc; | |
915 | } | |
916 | ||
917 | static void osc_shrink_grant_local(struct client_obd *cli, struct obdo *oa) | |
918 | { | |
919 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
920 | oa->o_grant = cli->cl_avail_grant / 4; | |
921 | cli->cl_avail_grant -= oa->o_grant; | |
922 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
923 | if (!(oa->o_valid & OBD_MD_FLFLAGS)) { | |
924 | oa->o_valid |= OBD_MD_FLFLAGS; | |
925 | oa->o_flags = 0; | |
926 | } | |
927 | oa->o_flags |= OBD_FL_SHRINK_GRANT; | |
928 | osc_update_next_shrink(cli); | |
929 | } | |
930 | ||
931 | /* Shrink the current grant, either from some large amount to enough for a | |
932 | * full set of in-flight RPCs, or if we have already shrunk to that limit | |
933 | * then to enough for a single RPC. This avoids keeping more grant than | |
934 | * needed, and avoids shrinking the grant piecemeal. */ | |
935 | static int osc_shrink_grant(struct client_obd *cli) | |
936 | { | |
937 | __u64 target_bytes = (cli->cl_max_rpcs_in_flight + 1) * | |
938 | (cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT); | |
939 | ||
940 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
941 | if (cli->cl_avail_grant <= target_bytes) | |
942 | target_bytes = cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT; | |
943 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
944 | ||
945 | return osc_shrink_grant_to_target(cli, target_bytes); | |
946 | } | |
947 | ||
948 | int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes) | |
949 | { | |
950 | int rc = 0; | |
951 | struct ost_body *body; | |
d7e09d03 PT |
952 | |
953 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
954 | /* Don't shrink if we are already above or below the desired limit | |
955 | * We don't want to shrink below a single RPC, as that will negatively | |
956 | * impact block allocation and long-term performance. */ | |
957 | if (target_bytes < cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT) | |
958 | target_bytes = cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT; | |
959 | ||
960 | if (target_bytes >= cli->cl_avail_grant) { | |
961 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
0a3bdb00 | 962 | return 0; |
d7e09d03 PT |
963 | } |
964 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
965 | ||
7795178d | 966 | body = kzalloc(sizeof(*body), GFP_NOFS); |
d7e09d03 | 967 | if (!body) |
0a3bdb00 | 968 | return -ENOMEM; |
d7e09d03 PT |
969 | |
970 | osc_announce_cached(cli, &body->oa, 0); | |
971 | ||
972 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
973 | body->oa.o_grant = cli->cl_avail_grant - target_bytes; | |
974 | cli->cl_avail_grant = target_bytes; | |
975 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
976 | if (!(body->oa.o_valid & OBD_MD_FLFLAGS)) { | |
977 | body->oa.o_valid |= OBD_MD_FLFLAGS; | |
978 | body->oa.o_flags = 0; | |
979 | } | |
980 | body->oa.o_flags |= OBD_FL_SHRINK_GRANT; | |
981 | osc_update_next_shrink(cli); | |
982 | ||
983 | rc = osc_set_info_async(NULL, cli->cl_import->imp_obd->obd_self_export, | |
984 | sizeof(KEY_GRANT_SHRINK), KEY_GRANT_SHRINK, | |
985 | sizeof(*body), body, NULL); | |
986 | if (rc != 0) | |
987 | __osc_update_grant(cli, body->oa.o_grant); | |
7795178d | 988 | kfree(body); |
0a3bdb00 | 989 | return rc; |
d7e09d03 PT |
990 | } |
991 | ||
992 | static int osc_should_shrink_grant(struct client_obd *client) | |
993 | { | |
a649ad1d GKH |
994 | unsigned long time = cfs_time_current(); |
995 | unsigned long next_shrink = client->cl_next_shrink_grant; | |
d7e09d03 PT |
996 | |
997 | if ((client->cl_import->imp_connect_data.ocd_connect_flags & | |
998 | OBD_CONNECT_GRANT_SHRINK) == 0) | |
999 | return 0; | |
1000 | ||
1001 | if (cfs_time_aftereq(time, next_shrink - 5 * CFS_TICK)) { | |
1002 | /* Get the current RPC size directly, instead of going via: | |
1003 | * cli_brw_size(obd->u.cli.cl_import->imp_obd->obd_self_export) | |
1004 | * Keep comment here so that it can be found by searching. */ | |
1005 | int brw_size = client->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT; | |
1006 | ||
1007 | if (client->cl_import->imp_state == LUSTRE_IMP_FULL && | |
1008 | client->cl_avail_grant > brw_size) | |
1009 | return 1; | |
1010 | else | |
1011 | osc_update_next_shrink(client); | |
1012 | } | |
1013 | return 0; | |
1014 | } | |
1015 | ||
1016 | static int osc_grant_shrink_grant_cb(struct timeout_item *item, void *data) | |
1017 | { | |
1018 | struct client_obd *client; | |
1019 | ||
1020 | list_for_each_entry(client, &item->ti_obd_list, | |
1021 | cl_grant_shrink_list) { | |
1022 | if (osc_should_shrink_grant(client)) | |
1023 | osc_shrink_grant(client); | |
1024 | } | |
1025 | return 0; | |
1026 | } | |
1027 | ||
1028 | static int osc_add_shrink_grant(struct client_obd *client) | |
1029 | { | |
1030 | int rc; | |
1031 | ||
1032 | rc = ptlrpc_add_timeout_client(client->cl_grant_shrink_interval, | |
1033 | TIMEOUT_GRANT, | |
1034 | osc_grant_shrink_grant_cb, NULL, | |
1035 | &client->cl_grant_shrink_list); | |
1036 | if (rc) { | |
1037 | CERROR("add grant client %s error %d\n", | |
1038 | client->cl_import->imp_obd->obd_name, rc); | |
1039 | return rc; | |
1040 | } | |
1041 | CDEBUG(D_CACHE, "add grant client %s \n", | |
1042 | client->cl_import->imp_obd->obd_name); | |
1043 | osc_update_next_shrink(client); | |
1044 | return 0; | |
1045 | } | |
1046 | ||
1047 | static int osc_del_shrink_grant(struct client_obd *client) | |
1048 | { | |
1049 | return ptlrpc_del_timeout_client(&client->cl_grant_shrink_list, | |
1050 | TIMEOUT_GRANT); | |
1051 | } | |
1052 | ||
1053 | static void osc_init_grant(struct client_obd *cli, struct obd_connect_data *ocd) | |
1054 | { | |
1055 | /* | |
1056 | * ocd_grant is the total grant amount we're expect to hold: if we've | |
1057 | * been evicted, it's the new avail_grant amount, cl_dirty will drop | |
1058 | * to 0 as inflight RPCs fail out; otherwise, it's avail_grant + dirty. | |
1059 | * | |
1060 | * race is tolerable here: if we're evicted, but imp_state already | |
1061 | * left EVICTED state, then cl_dirty must be 0 already. | |
1062 | */ | |
1063 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
1064 | if (cli->cl_import->imp_state == LUSTRE_IMP_EVICTED) | |
1065 | cli->cl_avail_grant = ocd->ocd_grant; | |
1066 | else | |
1067 | cli->cl_avail_grant = ocd->ocd_grant - cli->cl_dirty; | |
1068 | ||
1069 | if (cli->cl_avail_grant < 0) { | |
1070 | CWARN("%s: available grant < 0: avail/ocd/dirty %ld/%u/%ld\n", | |
1071 | cli->cl_import->imp_obd->obd_name, cli->cl_avail_grant, | |
1072 | ocd->ocd_grant, cli->cl_dirty); | |
1073 | /* workaround for servers which do not have the patch from | |
1074 | * LU-2679 */ | |
1075 | cli->cl_avail_grant = ocd->ocd_grant; | |
1076 | } | |
1077 | ||
1078 | /* determine the appropriate chunk size used by osc_extent. */ | |
1079 | cli->cl_chunkbits = max_t(int, PAGE_CACHE_SHIFT, ocd->ocd_blocksize); | |
1080 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
1081 | ||
2d00bd17 JP |
1082 | CDEBUG(D_CACHE, "%s, setting cl_avail_grant: %ld cl_lost_grant: %ld chunk bits: %d\n", |
1083 | cli->cl_import->imp_obd->obd_name, | |
1084 | cli->cl_avail_grant, cli->cl_lost_grant, cli->cl_chunkbits); | |
d7e09d03 PT |
1085 | |
1086 | if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT_SHRINK && | |
1087 | list_empty(&cli->cl_grant_shrink_list)) | |
1088 | osc_add_shrink_grant(cli); | |
1089 | } | |
1090 | ||
1091 | /* We assume that the reason this OSC got a short read is because it read | |
1092 | * beyond the end of a stripe file; i.e. lustre is reading a sparse file | |
1093 | * via the LOV, and it _knows_ it's reading inside the file, it's just that | |
1094 | * this stripe never got written at or beyond this stripe offset yet. */ | |
21aef7d9 | 1095 | static void handle_short_read(int nob_read, u32 page_count, |
d7e09d03 PT |
1096 | struct brw_page **pga) |
1097 | { | |
1098 | char *ptr; | |
1099 | int i = 0; | |
1100 | ||
1101 | /* skip bytes read OK */ | |
1102 | while (nob_read > 0) { | |
1103 | LASSERT (page_count > 0); | |
1104 | ||
1105 | if (pga[i]->count > nob_read) { | |
1106 | /* EOF inside this page */ | |
1107 | ptr = kmap(pga[i]->pg) + | |
1108 | (pga[i]->off & ~CFS_PAGE_MASK); | |
1109 | memset(ptr + nob_read, 0, pga[i]->count - nob_read); | |
1110 | kunmap(pga[i]->pg); | |
1111 | page_count--; | |
1112 | i++; | |
1113 | break; | |
1114 | } | |
1115 | ||
1116 | nob_read -= pga[i]->count; | |
1117 | page_count--; | |
1118 | i++; | |
1119 | } | |
1120 | ||
1121 | /* zero remaining pages */ | |
1122 | while (page_count-- > 0) { | |
1123 | ptr = kmap(pga[i]->pg) + (pga[i]->off & ~CFS_PAGE_MASK); | |
1124 | memset(ptr, 0, pga[i]->count); | |
1125 | kunmap(pga[i]->pg); | |
1126 | i++; | |
1127 | } | |
1128 | } | |
1129 | ||
1130 | static int check_write_rcs(struct ptlrpc_request *req, | |
1131 | int requested_nob, int niocount, | |
21aef7d9 | 1132 | u32 page_count, struct brw_page **pga) |
d7e09d03 PT |
1133 | { |
1134 | int i; | |
1135 | __u32 *remote_rcs; | |
1136 | ||
1137 | remote_rcs = req_capsule_server_sized_get(&req->rq_pill, &RMF_RCS, | |
1138 | sizeof(*remote_rcs) * | |
1139 | niocount); | |
1140 | if (remote_rcs == NULL) { | |
1141 | CDEBUG(D_INFO, "Missing/short RC vector on BRW_WRITE reply\n"); | |
fbe7c6c7 | 1142 | return -EPROTO; |
d7e09d03 PT |
1143 | } |
1144 | ||
1145 | /* return error if any niobuf was in error */ | |
1146 | for (i = 0; i < niocount; i++) { | |
1147 | if ((int)remote_rcs[i] < 0) | |
e8291974 | 1148 | return remote_rcs[i]; |
d7e09d03 PT |
1149 | |
1150 | if (remote_rcs[i] != 0) { | |
1151 | CDEBUG(D_INFO, "rc[%d] invalid (%d) req %p\n", | |
1152 | i, remote_rcs[i], req); | |
fbe7c6c7 | 1153 | return -EPROTO; |
d7e09d03 PT |
1154 | } |
1155 | } | |
1156 | ||
1157 | if (req->rq_bulk->bd_nob_transferred != requested_nob) { | |
1158 | CERROR("Unexpected # bytes transferred: %d (requested %d)\n", | |
1159 | req->rq_bulk->bd_nob_transferred, requested_nob); | |
fbe7c6c7 | 1160 | return -EPROTO; |
d7e09d03 PT |
1161 | } |
1162 | ||
fbe7c6c7 | 1163 | return 0; |
d7e09d03 PT |
1164 | } |
1165 | ||
1166 | static inline int can_merge_pages(struct brw_page *p1, struct brw_page *p2) | |
1167 | { | |
1168 | if (p1->flag != p2->flag) { | |
7cf1054b HE |
1169 | unsigned mask = ~(OBD_BRW_FROM_GRANT | OBD_BRW_NOCACHE | |
1170 | OBD_BRW_SYNC | OBD_BRW_ASYNC|OBD_BRW_NOQUOTA); | |
d7e09d03 PT |
1171 | |
1172 | /* warn if we try to combine flags that we don't know to be | |
1173 | * safe to combine */ | |
1174 | if (unlikely((p1->flag & mask) != (p2->flag & mask))) { | |
2d00bd17 | 1175 | CWARN("Saw flags 0x%x and 0x%x in the same brw, please report this at http://bugs.whamcloud.com/\n", |
d7e09d03 PT |
1176 | p1->flag, p2->flag); |
1177 | } | |
1178 | return 0; | |
1179 | } | |
1180 | ||
1181 | return (p1->off + p1->count == p2->off); | |
1182 | } | |
1183 | ||
21aef7d9 | 1184 | static u32 osc_checksum_bulk(int nob, u32 pg_count, |
d7e09d03 PT |
1185 | struct brw_page **pga, int opc, |
1186 | cksum_type_t cksum_type) | |
1187 | { | |
1188 | __u32 cksum; | |
1189 | int i = 0; | |
1190 | struct cfs_crypto_hash_desc *hdesc; | |
1191 | unsigned int bufsize; | |
1192 | int err; | |
1193 | unsigned char cfs_alg = cksum_obd2cfs(cksum_type); | |
1194 | ||
1195 | LASSERT(pg_count > 0); | |
1196 | ||
1197 | hdesc = cfs_crypto_hash_init(cfs_alg, NULL, 0); | |
1198 | if (IS_ERR(hdesc)) { | |
1199 | CERROR("Unable to initialize checksum hash %s\n", | |
1200 | cfs_crypto_hash_name(cfs_alg)); | |
1201 | return PTR_ERR(hdesc); | |
1202 | } | |
1203 | ||
1204 | while (nob > 0 && pg_count > 0) { | |
1205 | int count = pga[i]->count > nob ? nob : pga[i]->count; | |
1206 | ||
1207 | /* corrupt the data before we compute the checksum, to | |
1208 | * simulate an OST->client data error */ | |
1209 | if (i == 0 && opc == OST_READ && | |
1210 | OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_RECEIVE)) { | |
1211 | unsigned char *ptr = kmap(pga[i]->pg); | |
1212 | int off = pga[i]->off & ~CFS_PAGE_MASK; | |
1213 | memcpy(ptr + off, "bad1", min(4, nob)); | |
1214 | kunmap(pga[i]->pg); | |
1215 | } | |
1216 | cfs_crypto_hash_update_page(hdesc, pga[i]->pg, | |
1217 | pga[i]->off & ~CFS_PAGE_MASK, | |
1218 | count); | |
aa3bee0d GKH |
1219 | CDEBUG(D_PAGE, |
1220 | "page %p map %p index %lu flags %lx count %u priv %0lx: off %d\n", | |
1221 | pga[i]->pg, pga[i]->pg->mapping, pga[i]->pg->index, | |
1222 | (long)pga[i]->pg->flags, page_count(pga[i]->pg), | |
1223 | page_private(pga[i]->pg), | |
1224 | (int)(pga[i]->off & ~CFS_PAGE_MASK)); | |
d7e09d03 PT |
1225 | |
1226 | nob -= pga[i]->count; | |
1227 | pg_count--; | |
1228 | i++; | |
1229 | } | |
1230 | ||
1231 | bufsize = 4; | |
1232 | err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize); | |
1233 | ||
1234 | if (err) | |
1235 | cfs_crypto_hash_final(hdesc, NULL, NULL); | |
1236 | ||
1237 | /* For sending we only compute the wrong checksum instead | |
1238 | * of corrupting the data so it is still correct on a redo */ | |
1239 | if (opc == OST_WRITE && OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_SEND)) | |
1240 | cksum++; | |
1241 | ||
1242 | return cksum; | |
1243 | } | |
1244 | ||
1d8cb70c GD |
1245 | static int osc_brw_prep_request(int cmd, struct client_obd *cli, |
1246 | struct obdo *oa, | |
21aef7d9 | 1247 | struct lov_stripe_md *lsm, u32 page_count, |
d7e09d03 PT |
1248 | struct brw_page **pga, |
1249 | struct ptlrpc_request **reqp, | |
1250 | struct obd_capa *ocapa, int reserve, | |
1251 | int resend) | |
1252 | { | |
1253 | struct ptlrpc_request *req; | |
1254 | struct ptlrpc_bulk_desc *desc; | |
1255 | struct ost_body *body; | |
1256 | struct obd_ioobj *ioobj; | |
1257 | struct niobuf_remote *niobuf; | |
1258 | int niocount, i, requested_nob, opc, rc; | |
1259 | struct osc_brw_async_args *aa; | |
1260 | struct req_capsule *pill; | |
1261 | struct brw_page *pg_prev; | |
1262 | ||
d7e09d03 | 1263 | if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ)) |
0a3bdb00 | 1264 | return -ENOMEM; /* Recoverable */ |
d7e09d03 | 1265 | if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ2)) |
0a3bdb00 | 1266 | return -EINVAL; /* Fatal */ |
d7e09d03 PT |
1267 | |
1268 | if ((cmd & OBD_BRW_WRITE) != 0) { | |
1269 | opc = OST_WRITE; | |
1270 | req = ptlrpc_request_alloc_pool(cli->cl_import, | |
1271 | cli->cl_import->imp_rq_pool, | |
1272 | &RQF_OST_BRW_WRITE); | |
1273 | } else { | |
1274 | opc = OST_READ; | |
1275 | req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_BRW_READ); | |
1276 | } | |
1277 | if (req == NULL) | |
0a3bdb00 | 1278 | return -ENOMEM; |
d7e09d03 PT |
1279 | |
1280 | for (niocount = i = 1; i < page_count; i++) { | |
1281 | if (!can_merge_pages(pga[i - 1], pga[i])) | |
1282 | niocount++; | |
1283 | } | |
1284 | ||
1285 | pill = &req->rq_pill; | |
1286 | req_capsule_set_size(pill, &RMF_OBD_IOOBJ, RCL_CLIENT, | |
1287 | sizeof(*ioobj)); | |
1288 | req_capsule_set_size(pill, &RMF_NIOBUF_REMOTE, RCL_CLIENT, | |
1289 | niocount * sizeof(*niobuf)); | |
1290 | osc_set_capa_size(req, &RMF_CAPA1, ocapa); | |
1291 | ||
1292 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, opc); | |
1293 | if (rc) { | |
1294 | ptlrpc_request_free(req); | |
0a3bdb00 | 1295 | return rc; |
d7e09d03 PT |
1296 | } |
1297 | req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */ | |
1298 | ptlrpc_at_set_req_timeout(req); | |
1299 | /* ask ptlrpc not to resend on EINPROGRESS since BRWs have their own | |
1300 | * retry logic */ | |
1301 | req->rq_no_retry_einprogress = 1; | |
1302 | ||
1303 | desc = ptlrpc_prep_bulk_imp(req, page_count, | |
1304 | cli->cl_import->imp_connect_data.ocd_brw_size >> LNET_MTU_BITS, | |
1305 | opc == OST_WRITE ? BULK_GET_SOURCE : BULK_PUT_SINK, | |
1306 | OST_BULK_PORTAL); | |
1307 | ||
26c4ea46 TJ |
1308 | if (desc == NULL) { |
1309 | rc = -ENOMEM; | |
1310 | goto out; | |
1311 | } | |
d7e09d03 PT |
1312 | /* NB request now owns desc and will free it when it gets freed */ |
1313 | ||
1314 | body = req_capsule_client_get(pill, &RMF_OST_BODY); | |
1315 | ioobj = req_capsule_client_get(pill, &RMF_OBD_IOOBJ); | |
1316 | niobuf = req_capsule_client_get(pill, &RMF_NIOBUF_REMOTE); | |
1317 | LASSERT(body != NULL && ioobj != NULL && niobuf != NULL); | |
1318 | ||
3b2f75fd | 1319 | lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa); |
d7e09d03 PT |
1320 | |
1321 | obdo_to_ioobj(oa, ioobj); | |
1322 | ioobj->ioo_bufcnt = niocount; | |
1323 | /* The high bits of ioo_max_brw tells server _maximum_ number of bulks | |
1324 | * that might be send for this request. The actual number is decided | |
1325 | * when the RPC is finally sent in ptlrpc_register_bulk(). It sends | |
1326 | * "max - 1" for old client compatibility sending "0", and also so the | |
1327 | * the actual maximum is a power-of-two number, not one less. LU-1431 */ | |
1328 | ioobj_max_brw_set(ioobj, desc->bd_md_max_brw); | |
1329 | osc_pack_capa(req, body, ocapa); | |
1330 | LASSERT(page_count > 0); | |
1331 | pg_prev = pga[0]; | |
1332 | for (requested_nob = i = 0; i < page_count; i++, niobuf++) { | |
1333 | struct brw_page *pg = pga[i]; | |
1334 | int poff = pg->off & ~CFS_PAGE_MASK; | |
1335 | ||
1336 | LASSERT(pg->count > 0); | |
1337 | /* make sure there is no gap in the middle of page array */ | |
1338 | LASSERTF(page_count == 1 || | |
1339 | (ergo(i == 0, poff + pg->count == PAGE_CACHE_SIZE) && | |
1340 | ergo(i > 0 && i < page_count - 1, | |
1341 | poff == 0 && pg->count == PAGE_CACHE_SIZE) && | |
1342 | ergo(i == page_count - 1, poff == 0)), | |
b0f5aad5 | 1343 | "i: %d/%d pg: %p off: %llu, count: %u\n", |
d7e09d03 PT |
1344 | i, page_count, pg, pg->off, pg->count); |
1345 | LASSERTF(i == 0 || pg->off > pg_prev->off, | |
2d00bd17 | 1346 | "i %d p_c %u pg %p [pri %lu ind %lu] off %llu prev_pg %p [pri %lu ind %lu] off %llu\n", |
d7e09d03 PT |
1347 | i, page_count, |
1348 | pg->pg, page_private(pg->pg), pg->pg->index, pg->off, | |
1349 | pg_prev->pg, page_private(pg_prev->pg), | |
1350 | pg_prev->pg->index, pg_prev->off); | |
1351 | LASSERT((pga[0]->flag & OBD_BRW_SRVLOCK) == | |
1352 | (pg->flag & OBD_BRW_SRVLOCK)); | |
1353 | ||
1354 | ptlrpc_prep_bulk_page_pin(desc, pg->pg, poff, pg->count); | |
1355 | requested_nob += pg->count; | |
1356 | ||
1357 | if (i > 0 && can_merge_pages(pg_prev, pg)) { | |
1358 | niobuf--; | |
1359 | niobuf->len += pg->count; | |
1360 | } else { | |
1361 | niobuf->offset = pg->off; | |
1362 | niobuf->len = pg->count; | |
1363 | niobuf->flags = pg->flag; | |
1364 | } | |
1365 | pg_prev = pg; | |
1366 | } | |
1367 | ||
1368 | LASSERTF((void *)(niobuf - niocount) == | |
1369 | req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE), | |
1370 | "want %p - real %p\n", req_capsule_client_get(&req->rq_pill, | |
1371 | &RMF_NIOBUF_REMOTE), (void *)(niobuf - niocount)); | |
1372 | ||
1373 | osc_announce_cached(cli, &body->oa, opc == OST_WRITE ? requested_nob:0); | |
1374 | if (resend) { | |
1375 | if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) { | |
1376 | body->oa.o_valid |= OBD_MD_FLFLAGS; | |
1377 | body->oa.o_flags = 0; | |
1378 | } | |
1379 | body->oa.o_flags |= OBD_FL_RECOV_RESEND; | |
1380 | } | |
1381 | ||
1382 | if (osc_should_shrink_grant(cli)) | |
1383 | osc_shrink_grant_local(cli, &body->oa); | |
1384 | ||
1385 | /* size[REQ_REC_OFF] still sizeof (*body) */ | |
1386 | if (opc == OST_WRITE) { | |
1387 | if (cli->cl_checksum && | |
1388 | !sptlrpc_flavor_has_bulk(&req->rq_flvr)) { | |
1389 | /* store cl_cksum_type in a local variable since | |
1390 | * it can be changed via lprocfs */ | |
1391 | cksum_type_t cksum_type = cli->cl_cksum_type; | |
1392 | ||
1393 | if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) { | |
1394 | oa->o_flags &= OBD_FL_LOCAL_MASK; | |
1395 | body->oa.o_flags = 0; | |
1396 | } | |
1397 | body->oa.o_flags |= cksum_type_pack(cksum_type); | |
1398 | body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS; | |
1399 | body->oa.o_cksum = osc_checksum_bulk(requested_nob, | |
1400 | page_count, pga, | |
1401 | OST_WRITE, | |
1402 | cksum_type); | |
1403 | CDEBUG(D_PAGE, "checksum at write origin: %x\n", | |
1404 | body->oa.o_cksum); | |
1405 | /* save this in 'oa', too, for later checking */ | |
1406 | oa->o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS; | |
1407 | oa->o_flags |= cksum_type_pack(cksum_type); | |
1408 | } else { | |
1409 | /* clear out the checksum flag, in case this is a | |
1410 | * resend but cl_checksum is no longer set. b=11238 */ | |
1411 | oa->o_valid &= ~OBD_MD_FLCKSUM; | |
1412 | } | |
1413 | oa->o_cksum = body->oa.o_cksum; | |
1414 | /* 1 RC per niobuf */ | |
1415 | req_capsule_set_size(pill, &RMF_RCS, RCL_SERVER, | |
1416 | sizeof(__u32) * niocount); | |
1417 | } else { | |
1418 | if (cli->cl_checksum && | |
1419 | !sptlrpc_flavor_has_bulk(&req->rq_flvr)) { | |
1420 | if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) | |
1421 | body->oa.o_flags = 0; | |
1422 | body->oa.o_flags |= cksum_type_pack(cli->cl_cksum_type); | |
1423 | body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS; | |
1424 | } | |
1425 | } | |
1426 | ptlrpc_request_set_replen(req); | |
1427 | ||
1428 | CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args)); | |
1429 | aa = ptlrpc_req_async_args(req); | |
1430 | aa->aa_oa = oa; | |
1431 | aa->aa_requested_nob = requested_nob; | |
1432 | aa->aa_nio_count = niocount; | |
1433 | aa->aa_page_count = page_count; | |
1434 | aa->aa_resends = 0; | |
1435 | aa->aa_ppga = pga; | |
1436 | aa->aa_cli = cli; | |
1437 | INIT_LIST_HEAD(&aa->aa_oaps); | |
1438 | if (ocapa && reserve) | |
1439 | aa->aa_ocapa = capa_get(ocapa); | |
1440 | ||
1441 | *reqp = req; | |
0a3bdb00 | 1442 | return 0; |
d7e09d03 PT |
1443 | |
1444 | out: | |
1445 | ptlrpc_req_finished(req); | |
0a3bdb00 | 1446 | return rc; |
d7e09d03 PT |
1447 | } |
1448 | ||
1449 | static int check_write_checksum(struct obdo *oa, const lnet_process_id_t *peer, | |
1450 | __u32 client_cksum, __u32 server_cksum, int nob, | |
21aef7d9 | 1451 | u32 page_count, struct brw_page **pga, |
d7e09d03 PT |
1452 | cksum_type_t client_cksum_type) |
1453 | { | |
1454 | __u32 new_cksum; | |
1455 | char *msg; | |
1456 | cksum_type_t cksum_type; | |
1457 | ||
1458 | if (server_cksum == client_cksum) { | |
1459 | CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum); | |
1460 | return 0; | |
1461 | } | |
1462 | ||
1463 | cksum_type = cksum_type_unpack(oa->o_valid & OBD_MD_FLFLAGS ? | |
1464 | oa->o_flags : 0); | |
1465 | new_cksum = osc_checksum_bulk(nob, page_count, pga, OST_WRITE, | |
1466 | cksum_type); | |
1467 | ||
1468 | if (cksum_type != client_cksum_type) | |
2d00bd17 JP |
1469 | msg = "the server did not use the checksum type specified in the original request - likely a protocol problem" |
1470 | ; | |
d7e09d03 | 1471 | else if (new_cksum == server_cksum) |
2d00bd17 JP |
1472 | msg = "changed on the client after we checksummed it - likely false positive due to mmap IO (bug 11742)" |
1473 | ; | |
d7e09d03 PT |
1474 | else if (new_cksum == client_cksum) |
1475 | msg = "changed in transit before arrival at OST"; | |
1476 | else | |
2d00bd17 JP |
1477 | msg = "changed in transit AND doesn't match the original - likely false positive due to mmap IO (bug 11742)" |
1478 | ; | |
d7e09d03 PT |
1479 | |
1480 | LCONSOLE_ERROR_MSG(0x132, "BAD WRITE CHECKSUM: %s: from %s inode "DFID | |
b0f5aad5 | 1481 | " object "DOSTID" extent [%llu-%llu]\n", |
d7e09d03 PT |
1482 | msg, libcfs_nid2str(peer->nid), |
1483 | oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : (__u64)0, | |
1484 | oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0, | |
1485 | oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0, | |
1486 | POSTID(&oa->o_oi), pga[0]->off, | |
1487 | pga[page_count-1]->off + pga[page_count-1]->count - 1); | |
2d00bd17 JP |
1488 | CERROR("original client csum %x (type %x), server csum %x (type %x), client csum now %x\n", |
1489 | client_cksum, client_cksum_type, | |
d7e09d03 PT |
1490 | server_cksum, cksum_type, new_cksum); |
1491 | return 1; | |
1492 | } | |
1493 | ||
1494 | /* Note rc enters this function as number of bytes transferred */ | |
1495 | static int osc_brw_fini_request(struct ptlrpc_request *req, int rc) | |
1496 | { | |
1497 | struct osc_brw_async_args *aa = (void *)&req->rq_async_args; | |
1498 | const lnet_process_id_t *peer = | |
1499 | &req->rq_import->imp_connection->c_peer; | |
1500 | struct client_obd *cli = aa->aa_cli; | |
1501 | struct ost_body *body; | |
1502 | __u32 client_cksum = 0; | |
d7e09d03 PT |
1503 | |
1504 | if (rc < 0 && rc != -EDQUOT) { | |
1505 | DEBUG_REQ(D_INFO, req, "Failed request with rc = %d\n", rc); | |
0a3bdb00 | 1506 | return rc; |
d7e09d03 PT |
1507 | } |
1508 | ||
1509 | LASSERTF(req->rq_repmsg != NULL, "rc = %d\n", rc); | |
1510 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
1511 | if (body == NULL) { | |
1512 | DEBUG_REQ(D_INFO, req, "Can't unpack body\n"); | |
0a3bdb00 | 1513 | return -EPROTO; |
d7e09d03 PT |
1514 | } |
1515 | ||
1516 | /* set/clear over quota flag for a uid/gid */ | |
1517 | if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE && | |
1518 | body->oa.o_valid & (OBD_MD_FLUSRQUOTA | OBD_MD_FLGRPQUOTA)) { | |
1519 | unsigned int qid[MAXQUOTAS] = { body->oa.o_uid, body->oa.o_gid }; | |
1520 | ||
55f5a824 | 1521 | CDEBUG(D_QUOTA, "setdq for [%u %u] with valid %#llx, flags %x\n", |
d7e09d03 PT |
1522 | body->oa.o_uid, body->oa.o_gid, body->oa.o_valid, |
1523 | body->oa.o_flags); | |
1524 | osc_quota_setdq(cli, qid, body->oa.o_valid, body->oa.o_flags); | |
1525 | } | |
1526 | ||
1527 | osc_update_grant(cli, body); | |
1528 | ||
1529 | if (rc < 0) | |
0a3bdb00 | 1530 | return rc; |
d7e09d03 PT |
1531 | |
1532 | if (aa->aa_oa->o_valid & OBD_MD_FLCKSUM) | |
1533 | client_cksum = aa->aa_oa->o_cksum; /* save for later */ | |
1534 | ||
1535 | if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) { | |
1536 | if (rc > 0) { | |
1537 | CERROR("Unexpected +ve rc %d\n", rc); | |
0a3bdb00 | 1538 | return -EPROTO; |
d7e09d03 PT |
1539 | } |
1540 | LASSERT(req->rq_bulk->bd_nob == aa->aa_requested_nob); | |
1541 | ||
1542 | if (sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk)) | |
0a3bdb00 | 1543 | return -EAGAIN; |
d7e09d03 PT |
1544 | |
1545 | if ((aa->aa_oa->o_valid & OBD_MD_FLCKSUM) && client_cksum && | |
1546 | check_write_checksum(&body->oa, peer, client_cksum, | |
1547 | body->oa.o_cksum, aa->aa_requested_nob, | |
1548 | aa->aa_page_count, aa->aa_ppga, | |
1549 | cksum_type_unpack(aa->aa_oa->o_flags))) | |
0a3bdb00 | 1550 | return -EAGAIN; |
d7e09d03 | 1551 | |
1d8cb70c GD |
1552 | rc = check_write_rcs(req, aa->aa_requested_nob, |
1553 | aa->aa_nio_count, | |
d7e09d03 | 1554 | aa->aa_page_count, aa->aa_ppga); |
26c4ea46 | 1555 | goto out; |
d7e09d03 PT |
1556 | } |
1557 | ||
1558 | /* The rest of this function executes only for OST_READs */ | |
1559 | ||
1560 | /* if unwrap_bulk failed, return -EAGAIN to retry */ | |
1561 | rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk, rc); | |
26c4ea46 TJ |
1562 | if (rc < 0) { |
1563 | rc = -EAGAIN; | |
1564 | goto out; | |
1565 | } | |
d7e09d03 PT |
1566 | |
1567 | if (rc > aa->aa_requested_nob) { | |
1568 | CERROR("Unexpected rc %d (%d requested)\n", rc, | |
1569 | aa->aa_requested_nob); | |
0a3bdb00 | 1570 | return -EPROTO; |
d7e09d03 PT |
1571 | } |
1572 | ||
1573 | if (rc != req->rq_bulk->bd_nob_transferred) { | |
1574 | CERROR ("Unexpected rc %d (%d transferred)\n", | |
1575 | rc, req->rq_bulk->bd_nob_transferred); | |
fbe7c6c7 | 1576 | return -EPROTO; |
d7e09d03 PT |
1577 | } |
1578 | ||
1579 | if (rc < aa->aa_requested_nob) | |
1580 | handle_short_read(rc, aa->aa_page_count, aa->aa_ppga); | |
1581 | ||
1582 | if (body->oa.o_valid & OBD_MD_FLCKSUM) { | |
1583 | static int cksum_counter; | |
1584 | __u32 server_cksum = body->oa.o_cksum; | |
1585 | char *via; | |
1586 | char *router; | |
1587 | cksum_type_t cksum_type; | |
1588 | ||
1589 | cksum_type = cksum_type_unpack(body->oa.o_valid &OBD_MD_FLFLAGS? | |
1590 | body->oa.o_flags : 0); | |
1591 | client_cksum = osc_checksum_bulk(rc, aa->aa_page_count, | |
1592 | aa->aa_ppga, OST_READ, | |
1593 | cksum_type); | |
1594 | ||
1595 | if (peer->nid == req->rq_bulk->bd_sender) { | |
1596 | via = router = ""; | |
1597 | } else { | |
1598 | via = " via "; | |
1599 | router = libcfs_nid2str(req->rq_bulk->bd_sender); | |
1600 | } | |
1601 | ||
a2ff0f97 | 1602 | if (server_cksum != client_cksum) { |
2d00bd17 | 1603 | LCONSOLE_ERROR_MSG(0x133, "%s: BAD READ CHECKSUM: from %s%s%s inode " DFID " object " DOSTID " extent [%llu-%llu]\n", |
d7e09d03 PT |
1604 | req->rq_import->imp_obd->obd_name, |
1605 | libcfs_nid2str(peer->nid), | |
1606 | via, router, | |
1607 | body->oa.o_valid & OBD_MD_FLFID ? | |
2d00bd17 | 1608 | body->oa.o_parent_seq : (__u64)0, |
d7e09d03 | 1609 | body->oa.o_valid & OBD_MD_FLFID ? |
2d00bd17 | 1610 | body->oa.o_parent_oid : 0, |
d7e09d03 | 1611 | body->oa.o_valid & OBD_MD_FLFID ? |
2d00bd17 | 1612 | body->oa.o_parent_ver : 0, |
d7e09d03 PT |
1613 | POSTID(&body->oa.o_oi), |
1614 | aa->aa_ppga[0]->off, | |
1615 | aa->aa_ppga[aa->aa_page_count-1]->off + | |
1616 | aa->aa_ppga[aa->aa_page_count-1]->count - | |
2d00bd17 | 1617 | 1); |
d7e09d03 PT |
1618 | CERROR("client %x, server %x, cksum_type %x\n", |
1619 | client_cksum, server_cksum, cksum_type); | |
1620 | cksum_counter = 0; | |
1621 | aa->aa_oa->o_cksum = client_cksum; | |
1622 | rc = -EAGAIN; | |
1623 | } else { | |
1624 | cksum_counter++; | |
1625 | CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum); | |
1626 | rc = 0; | |
1627 | } | |
1628 | } else if (unlikely(client_cksum)) { | |
1629 | static int cksum_missed; | |
1630 | ||
1631 | cksum_missed++; | |
1632 | if ((cksum_missed & (-cksum_missed)) == cksum_missed) | |
1633 | CERROR("Checksum %u requested from %s but not sent\n", | |
1634 | cksum_missed, libcfs_nid2str(peer->nid)); | |
1635 | } else { | |
1636 | rc = 0; | |
1637 | } | |
1638 | out: | |
1639 | if (rc >= 0) | |
3b2f75fd | 1640 | lustre_get_wire_obdo(&req->rq_import->imp_connect_data, |
1641 | aa->aa_oa, &body->oa); | |
d7e09d03 | 1642 | |
0a3bdb00 | 1643 | return rc; |
d7e09d03 PT |
1644 | } |
1645 | ||
d7e09d03 PT |
1646 | static int osc_brw_redo_request(struct ptlrpc_request *request, |
1647 | struct osc_brw_async_args *aa, int rc) | |
1648 | { | |
1649 | struct ptlrpc_request *new_req; | |
1650 | struct osc_brw_async_args *new_aa; | |
1651 | struct osc_async_page *oap; | |
d7e09d03 PT |
1652 | |
1653 | DEBUG_REQ(rc == -EINPROGRESS ? D_RPCTRACE : D_ERROR, request, | |
1654 | "redo for recoverable error %d", rc); | |
1655 | ||
1656 | rc = osc_brw_prep_request(lustre_msg_get_opc(request->rq_reqmsg) == | |
1657 | OST_WRITE ? OBD_BRW_WRITE :OBD_BRW_READ, | |
1658 | aa->aa_cli, aa->aa_oa, | |
1659 | NULL /* lsm unused by osc currently */, | |
1660 | aa->aa_page_count, aa->aa_ppga, | |
1661 | &new_req, aa->aa_ocapa, 0, 1); | |
1662 | if (rc) | |
0a3bdb00 | 1663 | return rc; |
d7e09d03 PT |
1664 | |
1665 | list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) { | |
1666 | if (oap->oap_request != NULL) { | |
1667 | LASSERTF(request == oap->oap_request, | |
1668 | "request %p != oap_request %p\n", | |
1669 | request, oap->oap_request); | |
1670 | if (oap->oap_interrupted) { | |
1671 | ptlrpc_req_finished(new_req); | |
0a3bdb00 | 1672 | return -EINTR; |
d7e09d03 PT |
1673 | } |
1674 | } | |
1675 | } | |
1676 | /* New request takes over pga and oaps from old request. | |
1677 | * Note that copying a list_head doesn't work, need to move it... */ | |
1678 | aa->aa_resends++; | |
1679 | new_req->rq_interpret_reply = request->rq_interpret_reply; | |
1680 | new_req->rq_async_args = request->rq_async_args; | |
d7e09d03 PT |
1681 | /* cap resend delay to the current request timeout, this is similar to |
1682 | * what ptlrpc does (see after_reply()) */ | |
1683 | if (aa->aa_resends > new_req->rq_timeout) | |
7264b8a5 | 1684 | new_req->rq_sent = get_seconds() + new_req->rq_timeout; |
d7e09d03 | 1685 | else |
7264b8a5 | 1686 | new_req->rq_sent = get_seconds() + aa->aa_resends; |
d7e09d03 PT |
1687 | new_req->rq_generation_set = 1; |
1688 | new_req->rq_import_generation = request->rq_import_generation; | |
1689 | ||
1690 | new_aa = ptlrpc_req_async_args(new_req); | |
1691 | ||
1692 | INIT_LIST_HEAD(&new_aa->aa_oaps); | |
1693 | list_splice_init(&aa->aa_oaps, &new_aa->aa_oaps); | |
1694 | INIT_LIST_HEAD(&new_aa->aa_exts); | |
1695 | list_splice_init(&aa->aa_exts, &new_aa->aa_exts); | |
1696 | new_aa->aa_resends = aa->aa_resends; | |
1697 | ||
1698 | list_for_each_entry(oap, &new_aa->aa_oaps, oap_rpc_item) { | |
1699 | if (oap->oap_request) { | |
1700 | ptlrpc_req_finished(oap->oap_request); | |
1701 | oap->oap_request = ptlrpc_request_addref(new_req); | |
1702 | } | |
1703 | } | |
1704 | ||
1705 | new_aa->aa_ocapa = aa->aa_ocapa; | |
1706 | aa->aa_ocapa = NULL; | |
1707 | ||
1708 | /* XXX: This code will run into problem if we're going to support | |
1709 | * to add a series of BRW RPCs into a self-defined ptlrpc_request_set | |
1710 | * and wait for all of them to be finished. We should inherit request | |
1711 | * set from old request. */ | |
1712 | ptlrpcd_add_req(new_req, PDL_POLICY_SAME, -1); | |
1713 | ||
1714 | DEBUG_REQ(D_INFO, new_req, "new request"); | |
0a3bdb00 | 1715 | return 0; |
d7e09d03 PT |
1716 | } |
1717 | ||
1718 | /* | |
1719 | * ugh, we want disk allocation on the target to happen in offset order. we'll | |
1720 | * follow sedgewicks advice and stick to the dead simple shellsort -- it'll do | |
1721 | * fine for our small page arrays and doesn't require allocation. its an | |
1722 | * insertion sort that swaps elements that are strides apart, shrinking the | |
1723 | * stride down until its '1' and the array is sorted. | |
1724 | */ | |
1725 | static void sort_brw_pages(struct brw_page **array, int num) | |
1726 | { | |
1727 | int stride, i, j; | |
1728 | struct brw_page *tmp; | |
1729 | ||
1730 | if (num == 1) | |
1731 | return; | |
1732 | for (stride = 1; stride < num ; stride = (stride * 3) + 1) | |
1733 | ; | |
1734 | ||
1735 | do { | |
1736 | stride /= 3; | |
1737 | for (i = stride ; i < num ; i++) { | |
1738 | tmp = array[i]; | |
1739 | j = i; | |
1740 | while (j >= stride && array[j - stride]->off > tmp->off) { | |
1741 | array[j] = array[j - stride]; | |
1742 | j -= stride; | |
1743 | } | |
1744 | array[j] = tmp; | |
1745 | } | |
1746 | } while (stride > 1); | |
1747 | } | |
1748 | ||
21aef7d9 | 1749 | static void osc_release_ppga(struct brw_page **ppga, u32 count) |
d7e09d03 PT |
1750 | { |
1751 | LASSERT(ppga != NULL); | |
7795178d | 1752 | kfree(ppga); |
d7e09d03 PT |
1753 | } |
1754 | ||
d7e09d03 PT |
1755 | static int brw_interpret(const struct lu_env *env, |
1756 | struct ptlrpc_request *req, void *data, int rc) | |
1757 | { | |
1758 | struct osc_brw_async_args *aa = data; | |
1759 | struct osc_extent *ext; | |
1760 | struct osc_extent *tmp; | |
1761 | struct cl_object *obj = NULL; | |
1762 | struct client_obd *cli = aa->aa_cli; | |
d7e09d03 PT |
1763 | |
1764 | rc = osc_brw_fini_request(req, rc); | |
1765 | CDEBUG(D_INODE, "request %p aa %p rc %d\n", req, aa, rc); | |
1766 | /* When server return -EINPROGRESS, client should always retry | |
1767 | * regardless of the number of times the bulk was resent already. */ | |
1768 | if (osc_recoverable_error(rc)) { | |
1769 | if (req->rq_import_generation != | |
1770 | req->rq_import->imp_generation) { | |
2d00bd17 | 1771 | CDEBUG(D_HA, "%s: resend cross eviction for object: " DOSTID ", rc = %d.\n", |
d7e09d03 PT |
1772 | req->rq_import->imp_obd->obd_name, |
1773 | POSTID(&aa->aa_oa->o_oi), rc); | |
1774 | } else if (rc == -EINPROGRESS || | |
1775 | client_should_resend(aa->aa_resends, aa->aa_cli)) { | |
1776 | rc = osc_brw_redo_request(req, aa, rc); | |
1777 | } else { | |
b0f5aad5 | 1778 | CERROR("%s: too many resent retries for object: %llu:%llu, rc = %d.\n", |
d7e09d03 PT |
1779 | req->rq_import->imp_obd->obd_name, |
1780 | POSTID(&aa->aa_oa->o_oi), rc); | |
1781 | } | |
1782 | ||
1783 | if (rc == 0) | |
0a3bdb00 | 1784 | return 0; |
d7e09d03 PT |
1785 | else if (rc == -EAGAIN || rc == -EINPROGRESS) |
1786 | rc = -EIO; | |
1787 | } | |
1788 | ||
1789 | if (aa->aa_ocapa) { | |
1790 | capa_put(aa->aa_ocapa); | |
1791 | aa->aa_ocapa = NULL; | |
1792 | } | |
1793 | ||
1794 | list_for_each_entry_safe(ext, tmp, &aa->aa_exts, oe_link) { | |
1795 | if (obj == NULL && rc == 0) { | |
1796 | obj = osc2cl(ext->oe_obj); | |
1797 | cl_object_get(obj); | |
1798 | } | |
1799 | ||
1800 | list_del_init(&ext->oe_link); | |
1801 | osc_extent_finish(env, ext, 1, rc); | |
1802 | } | |
1803 | LASSERT(list_empty(&aa->aa_exts)); | |
1804 | LASSERT(list_empty(&aa->aa_oaps)); | |
1805 | ||
1806 | if (obj != NULL) { | |
1807 | struct obdo *oa = aa->aa_oa; | |
1808 | struct cl_attr *attr = &osc_env_info(env)->oti_attr; | |
1809 | unsigned long valid = 0; | |
1810 | ||
1811 | LASSERT(rc == 0); | |
1812 | if (oa->o_valid & OBD_MD_FLBLOCKS) { | |
1813 | attr->cat_blocks = oa->o_blocks; | |
1814 | valid |= CAT_BLOCKS; | |
1815 | } | |
1816 | if (oa->o_valid & OBD_MD_FLMTIME) { | |
1817 | attr->cat_mtime = oa->o_mtime; | |
1818 | valid |= CAT_MTIME; | |
1819 | } | |
1820 | if (oa->o_valid & OBD_MD_FLATIME) { | |
1821 | attr->cat_atime = oa->o_atime; | |
1822 | valid |= CAT_ATIME; | |
1823 | } | |
1824 | if (oa->o_valid & OBD_MD_FLCTIME) { | |
1825 | attr->cat_ctime = oa->o_ctime; | |
1826 | valid |= CAT_CTIME; | |
1827 | } | |
1828 | if (valid != 0) { | |
1829 | cl_object_attr_lock(obj); | |
1830 | cl_object_attr_set(env, obj, attr, valid); | |
1831 | cl_object_attr_unlock(obj); | |
1832 | } | |
1833 | cl_object_put(env, obj); | |
1834 | } | |
1835 | OBDO_FREE(aa->aa_oa); | |
1836 | ||
1837 | cl_req_completion(env, aa->aa_clerq, rc < 0 ? rc : | |
1838 | req->rq_bulk->bd_nob_transferred); | |
1839 | osc_release_ppga(aa->aa_ppga, aa->aa_page_count); | |
1840 | ptlrpc_lprocfs_brw(req, req->rq_bulk->bd_nob_transferred); | |
1841 | ||
1842 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
1843 | /* We need to decrement before osc_ap_completion->osc_wake_cache_waiters | |
1844 | * is called so we know whether to go to sync BRWs or wait for more | |
1845 | * RPCs to complete */ | |
1846 | if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) | |
1847 | cli->cl_w_in_flight--; | |
1848 | else | |
1849 | cli->cl_r_in_flight--; | |
1850 | osc_wake_cache_waiters(cli); | |
1851 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
1852 | ||
1853 | osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME); | |
0a3bdb00 | 1854 | return rc; |
d7e09d03 PT |
1855 | } |
1856 | ||
d7e09d03 PT |
1857 | /** |
1858 | * Build an RPC by the list of extent @ext_list. The caller must ensure | |
1859 | * that the total pages in this list are NOT over max pages per RPC. | |
1860 | * Extents in the list must be in OES_RPC state. | |
1861 | */ | |
1862 | int osc_build_rpc(const struct lu_env *env, struct client_obd *cli, | |
1863 | struct list_head *ext_list, int cmd, pdl_policy_t pol) | |
1864 | { | |
cad6fafa BJ |
1865 | struct ptlrpc_request *req = NULL; |
1866 | struct osc_extent *ext; | |
1867 | struct brw_page **pga = NULL; | |
1868 | struct osc_brw_async_args *aa = NULL; | |
1869 | struct obdo *oa = NULL; | |
1870 | struct osc_async_page *oap; | |
1871 | struct osc_async_page *tmp; | |
1872 | struct cl_req *clerq = NULL; | |
1873 | enum cl_req_type crt = (cmd & OBD_BRW_WRITE) ? CRT_WRITE : | |
1874 | CRT_READ; | |
1875 | struct ldlm_lock *lock = NULL; | |
1876 | struct cl_req_attr *crattr = NULL; | |
21aef7d9 OD |
1877 | u64 starting_offset = OBD_OBJECT_EOF; |
1878 | u64 ending_offset = 0; | |
cad6fafa BJ |
1879 | int mpflag = 0; |
1880 | int mem_tight = 0; | |
1881 | int page_count = 0; | |
1882 | int i; | |
1883 | int rc; | |
3ce08cd7 | 1884 | struct ost_body *body; |
d7e09d03 | 1885 | LIST_HEAD(rpc_list); |
d7e09d03 | 1886 | |
d7e09d03 PT |
1887 | LASSERT(!list_empty(ext_list)); |
1888 | ||
1889 | /* add pages into rpc_list to build BRW rpc */ | |
1890 | list_for_each_entry(ext, ext_list, oe_link) { | |
1891 | LASSERT(ext->oe_state == OES_RPC); | |
1892 | mem_tight |= ext->oe_memalloc; | |
1893 | list_for_each_entry(oap, &ext->oe_pages, oap_pending_item) { | |
1894 | ++page_count; | |
1895 | list_add_tail(&oap->oap_rpc_item, &rpc_list); | |
1896 | if (starting_offset > oap->oap_obj_off) | |
1897 | starting_offset = oap->oap_obj_off; | |
1898 | else | |
1899 | LASSERT(oap->oap_page_off == 0); | |
1900 | if (ending_offset < oap->oap_obj_off + oap->oap_count) | |
1901 | ending_offset = oap->oap_obj_off + | |
1902 | oap->oap_count; | |
1903 | else | |
1904 | LASSERT(oap->oap_page_off + oap->oap_count == | |
1905 | PAGE_CACHE_SIZE); | |
1906 | } | |
1907 | } | |
1908 | ||
1909 | if (mem_tight) | |
1910 | mpflag = cfs_memory_pressure_get_and_set(); | |
1911 | ||
7795178d | 1912 | crattr = kzalloc(sizeof(*crattr), GFP_NOFS); |
26c4ea46 TJ |
1913 | if (crattr == NULL) { |
1914 | rc = -ENOMEM; | |
1915 | goto out; | |
1916 | } | |
cad6fafa | 1917 | |
7795178d | 1918 | pga = kcalloc(page_count, sizeof(*pga), GFP_NOFS); |
26c4ea46 TJ |
1919 | if (pga == NULL) { |
1920 | rc = -ENOMEM; | |
1921 | goto out; | |
1922 | } | |
d7e09d03 PT |
1923 | |
1924 | OBDO_ALLOC(oa); | |
26c4ea46 TJ |
1925 | if (oa == NULL) { |
1926 | rc = -ENOMEM; | |
1927 | goto out; | |
1928 | } | |
d7e09d03 PT |
1929 | |
1930 | i = 0; | |
1931 | list_for_each_entry(oap, &rpc_list, oap_rpc_item) { | |
1932 | struct cl_page *page = oap2cl_page(oap); | |
1933 | if (clerq == NULL) { | |
1934 | clerq = cl_req_alloc(env, page, crt, | |
cad6fafa | 1935 | 1 /* only 1-object rpcs for now */); |
26c4ea46 TJ |
1936 | if (IS_ERR(clerq)) { |
1937 | rc = PTR_ERR(clerq); | |
1938 | goto out; | |
1939 | } | |
d7e09d03 PT |
1940 | lock = oap->oap_ldlm_lock; |
1941 | } | |
1942 | if (mem_tight) | |
1943 | oap->oap_brw_flags |= OBD_BRW_MEMALLOC; | |
1944 | pga[i] = &oap->oap_brw_page; | |
1945 | pga[i]->off = oap->oap_obj_off + oap->oap_page_off; | |
1946 | CDEBUG(0, "put page %p index %lu oap %p flg %x to pga\n", | |
cad6fafa BJ |
1947 | pga[i]->pg, page_index(oap->oap_page), oap, |
1948 | pga[i]->flag); | |
d7e09d03 PT |
1949 | i++; |
1950 | cl_req_page_add(env, clerq, page); | |
1951 | } | |
1952 | ||
1953 | /* always get the data for the obdo for the rpc */ | |
1954 | LASSERT(clerq != NULL); | |
cad6fafa BJ |
1955 | crattr->cra_oa = oa; |
1956 | cl_req_attr_set(env, clerq, crattr, ~0ULL); | |
d7e09d03 PT |
1957 | if (lock) { |
1958 | oa->o_handle = lock->l_remote_handle; | |
1959 | oa->o_valid |= OBD_MD_FLHANDLE; | |
1960 | } | |
1961 | ||
1962 | rc = cl_req_prep(env, clerq); | |
1963 | if (rc != 0) { | |
1964 | CERROR("cl_req_prep failed: %d\n", rc); | |
26c4ea46 | 1965 | goto out; |
d7e09d03 PT |
1966 | } |
1967 | ||
1968 | sort_brw_pages(pga, page_count); | |
1969 | rc = osc_brw_prep_request(cmd, cli, oa, NULL, page_count, | |
cad6fafa | 1970 | pga, &req, crattr->cra_capa, 1, 0); |
d7e09d03 PT |
1971 | if (rc != 0) { |
1972 | CERROR("prep_req failed: %d\n", rc); | |
26c4ea46 | 1973 | goto out; |
d7e09d03 PT |
1974 | } |
1975 | ||
d7e09d03 PT |
1976 | req->rq_interpret_reply = brw_interpret; |
1977 | ||
1978 | if (mem_tight != 0) | |
1979 | req->rq_memalloc = 1; | |
1980 | ||
1981 | /* Need to update the timestamps after the request is built in case | |
1982 | * we race with setattr (locally or in queue at OST). If OST gets | |
1983 | * later setattr before earlier BRW (as determined by the request xid), | |
1984 | * the OST will not use BRW timestamps. Sadly, there is no obvious | |
1985 | * way to do this in a single call. bug 10150 */ | |
3ce08cd7 NY |
1986 | body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); |
1987 | crattr->cra_oa = &body->oa; | |
cad6fafa | 1988 | cl_req_attr_set(env, clerq, crattr, |
d7e09d03 PT |
1989 | OBD_MD_FLMTIME|OBD_MD_FLCTIME|OBD_MD_FLATIME); |
1990 | ||
cad6fafa | 1991 | lustre_msg_set_jobid(req->rq_reqmsg, crattr->cra_jobid); |
d7e09d03 PT |
1992 | |
1993 | CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args)); | |
1994 | aa = ptlrpc_req_async_args(req); | |
1995 | INIT_LIST_HEAD(&aa->aa_oaps); | |
1996 | list_splice_init(&rpc_list, &aa->aa_oaps); | |
1997 | INIT_LIST_HEAD(&aa->aa_exts); | |
1998 | list_splice_init(ext_list, &aa->aa_exts); | |
1999 | aa->aa_clerq = clerq; | |
2000 | ||
2001 | /* queued sync pages can be torn down while the pages | |
2002 | * were between the pending list and the rpc */ | |
2003 | tmp = NULL; | |
2004 | list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) { | |
2005 | /* only one oap gets a request reference */ | |
2006 | if (tmp == NULL) | |
2007 | tmp = oap; | |
2008 | if (oap->oap_interrupted && !req->rq_intr) { | |
2009 | CDEBUG(D_INODE, "oap %p in req %p interrupted\n", | |
2010 | oap, req); | |
2011 | ptlrpc_mark_interrupted(req); | |
2012 | } | |
2013 | } | |
2014 | if (tmp != NULL) | |
2015 | tmp->oap_request = ptlrpc_request_addref(req); | |
2016 | ||
2017 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
2018 | starting_offset >>= PAGE_CACHE_SHIFT; | |
2019 | if (cmd == OBD_BRW_READ) { | |
2020 | cli->cl_r_in_flight++; | |
2021 | lprocfs_oh_tally_log2(&cli->cl_read_page_hist, page_count); | |
2022 | lprocfs_oh_tally(&cli->cl_read_rpc_hist, cli->cl_r_in_flight); | |
2023 | lprocfs_oh_tally_log2(&cli->cl_read_offset_hist, | |
2024 | starting_offset + 1); | |
2025 | } else { | |
2026 | cli->cl_w_in_flight++; | |
2027 | lprocfs_oh_tally_log2(&cli->cl_write_page_hist, page_count); | |
2028 | lprocfs_oh_tally(&cli->cl_write_rpc_hist, cli->cl_w_in_flight); | |
2029 | lprocfs_oh_tally_log2(&cli->cl_write_offset_hist, | |
2030 | starting_offset + 1); | |
2031 | } | |
2032 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
2033 | ||
2034 | DEBUG_REQ(D_INODE, req, "%d pages, aa %p. now %dr/%dw in flight", | |
2035 | page_count, aa, cli->cl_r_in_flight, | |
2036 | cli->cl_w_in_flight); | |
2037 | ||
2038 | /* XXX: Maybe the caller can check the RPC bulk descriptor to | |
2039 | * see which CPU/NUMA node the majority of pages were allocated | |
2040 | * on, and try to assign the async RPC to the CPU core | |
2041 | * (PDL_POLICY_PREFERRED) to reduce cross-CPU memory traffic. | |
2042 | * | |
2043 | * But on the other hand, we expect that multiple ptlrpcd | |
2044 | * threads and the initial write sponsor can run in parallel, | |
2045 | * especially when data checksum is enabled, which is CPU-bound | |
2046 | * operation and single ptlrpcd thread cannot process in time. | |
2047 | * So more ptlrpcd threads sharing BRW load | |
2048 | * (with PDL_POLICY_ROUND) seems better. | |
2049 | */ | |
2050 | ptlrpcd_add_req(req, pol, -1); | |
2051 | rc = 0; | |
d7e09d03 PT |
2052 | |
2053 | out: | |
2054 | if (mem_tight != 0) | |
2055 | cfs_memory_pressure_restore(mpflag); | |
2056 | ||
cad6fafa BJ |
2057 | if (crattr != NULL) { |
2058 | capa_put(crattr->cra_capa); | |
7795178d | 2059 | kfree(crattr); |
cad6fafa BJ |
2060 | } |
2061 | ||
d7e09d03 PT |
2062 | if (rc != 0) { |
2063 | LASSERT(req == NULL); | |
2064 | ||
2065 | if (oa) | |
2066 | OBDO_FREE(oa); | |
59e267c0 | 2067 | kfree(pga); |
d7e09d03 PT |
2068 | /* this should happen rarely and is pretty bad, it makes the |
2069 | * pending list not follow the dirty order */ | |
2070 | while (!list_empty(ext_list)) { | |
2071 | ext = list_entry(ext_list->next, struct osc_extent, | |
2072 | oe_link); | |
2073 | list_del_init(&ext->oe_link); | |
2074 | osc_extent_finish(env, ext, 0, rc); | |
2075 | } | |
2076 | if (clerq && !IS_ERR(clerq)) | |
2077 | cl_req_completion(env, clerq, rc); | |
2078 | } | |
0a3bdb00 | 2079 | return rc; |
d7e09d03 PT |
2080 | } |
2081 | ||
2082 | static int osc_set_lock_data_with_check(struct ldlm_lock *lock, | |
2083 | struct ldlm_enqueue_info *einfo) | |
2084 | { | |
2085 | void *data = einfo->ei_cbdata; | |
2086 | int set = 0; | |
2087 | ||
2088 | LASSERT(lock != NULL); | |
2089 | LASSERT(lock->l_blocking_ast == einfo->ei_cb_bl); | |
2090 | LASSERT(lock->l_resource->lr_type == einfo->ei_type); | |
2091 | LASSERT(lock->l_completion_ast == einfo->ei_cb_cp); | |
2092 | LASSERT(lock->l_glimpse_ast == einfo->ei_cb_gl); | |
2093 | ||
2094 | lock_res_and_lock(lock); | |
2095 | spin_lock(&osc_ast_guard); | |
2096 | ||
2097 | if (lock->l_ast_data == NULL) | |
2098 | lock->l_ast_data = data; | |
2099 | if (lock->l_ast_data == data) | |
2100 | set = 1; | |
2101 | ||
2102 | spin_unlock(&osc_ast_guard); | |
2103 | unlock_res_and_lock(lock); | |
2104 | ||
2105 | return set; | |
2106 | } | |
2107 | ||
2108 | static int osc_set_data_with_check(struct lustre_handle *lockh, | |
2109 | struct ldlm_enqueue_info *einfo) | |
2110 | { | |
2111 | struct ldlm_lock *lock = ldlm_handle2lock(lockh); | |
2112 | int set = 0; | |
2113 | ||
2114 | if (lock != NULL) { | |
2115 | set = osc_set_lock_data_with_check(lock, einfo); | |
2116 | LDLM_LOCK_PUT(lock); | |
2117 | } else | |
2118 | CERROR("lockh %p, data %p - client evicted?\n", | |
2119 | lockh, einfo->ei_cbdata); | |
2120 | return set; | |
2121 | } | |
2122 | ||
d7e09d03 PT |
2123 | /* find any ldlm lock of the inode in osc |
2124 | * return 0 not find | |
2125 | * 1 find one | |
2126 | * < 0 error */ | |
2127 | static int osc_find_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm, | |
2128 | ldlm_iterator_t replace, void *data) | |
2129 | { | |
2130 | struct ldlm_res_id res_id; | |
2131 | struct obd_device *obd = class_exp2obd(exp); | |
2132 | int rc = 0; | |
2133 | ||
2134 | ostid_build_res_name(&lsm->lsm_oi, &res_id); | |
2135 | rc = ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data); | |
2136 | if (rc == LDLM_ITER_STOP) | |
fbe7c6c7 | 2137 | return 1; |
d7e09d03 | 2138 | if (rc == LDLM_ITER_CONTINUE) |
fbe7c6c7 JL |
2139 | return 0; |
2140 | return rc; | |
d7e09d03 PT |
2141 | } |
2142 | ||
2143 | static int osc_enqueue_fini(struct ptlrpc_request *req, struct ost_lvb *lvb, | |
2144 | obd_enqueue_update_f upcall, void *cookie, | |
2145 | __u64 *flags, int agl, int rc) | |
2146 | { | |
2147 | int intent = *flags & LDLM_FL_HAS_INTENT; | |
d7e09d03 PT |
2148 | |
2149 | if (intent) { | |
2150 | /* The request was created before ldlm_cli_enqueue call. */ | |
2151 | if (rc == ELDLM_LOCK_ABORTED) { | |
2152 | struct ldlm_reply *rep; | |
2153 | rep = req_capsule_server_get(&req->rq_pill, | |
2154 | &RMF_DLM_REP); | |
2155 | ||
2156 | LASSERT(rep != NULL); | |
2d58de78 LW |
2157 | rep->lock_policy_res1 = |
2158 | ptlrpc_status_ntoh(rep->lock_policy_res1); | |
d7e09d03 PT |
2159 | if (rep->lock_policy_res1) |
2160 | rc = rep->lock_policy_res1; | |
2161 | } | |
2162 | } | |
2163 | ||
2164 | if ((intent != 0 && rc == ELDLM_LOCK_ABORTED && agl == 0) || | |
2165 | (rc == 0)) { | |
2166 | *flags |= LDLM_FL_LVB_READY; | |
1d8cb70c | 2167 | CDEBUG(D_INODE, "got kms %llu blocks %llu mtime %llu\n", |
d7e09d03 PT |
2168 | lvb->lvb_size, lvb->lvb_blocks, lvb->lvb_mtime); |
2169 | } | |
2170 | ||
2171 | /* Call the update callback. */ | |
2172 | rc = (*upcall)(cookie, rc); | |
0a3bdb00 | 2173 | return rc; |
d7e09d03 PT |
2174 | } |
2175 | ||
2176 | static int osc_enqueue_interpret(const struct lu_env *env, | |
2177 | struct ptlrpc_request *req, | |
2178 | struct osc_enqueue_args *aa, int rc) | |
2179 | { | |
2180 | struct ldlm_lock *lock; | |
2181 | struct lustre_handle handle; | |
2182 | __u32 mode; | |
2183 | struct ost_lvb *lvb; | |
2184 | __u32 lvb_len; | |
2185 | __u64 *flags = aa->oa_flags; | |
2186 | ||
2187 | /* Make a local copy of a lock handle and a mode, because aa->oa_* | |
2188 | * might be freed anytime after lock upcall has been called. */ | |
2189 | lustre_handle_copy(&handle, aa->oa_lockh); | |
2190 | mode = aa->oa_ei->ei_mode; | |
2191 | ||
2192 | /* ldlm_cli_enqueue is holding a reference on the lock, so it must | |
2193 | * be valid. */ | |
2194 | lock = ldlm_handle2lock(&handle); | |
2195 | ||
2196 | /* Take an additional reference so that a blocking AST that | |
2197 | * ldlm_cli_enqueue_fini() might post for a failed lock, is guaranteed | |
2198 | * to arrive after an upcall has been executed by | |
2199 | * osc_enqueue_fini(). */ | |
2200 | ldlm_lock_addref(&handle, mode); | |
2201 | ||
2202 | /* Let CP AST to grant the lock first. */ | |
2203 | OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_ENQ_RACE, 1); | |
2204 | ||
2205 | if (aa->oa_agl && rc == ELDLM_LOCK_ABORTED) { | |
2206 | lvb = NULL; | |
2207 | lvb_len = 0; | |
2208 | } else { | |
2209 | lvb = aa->oa_lvb; | |
2210 | lvb_len = sizeof(*aa->oa_lvb); | |
2211 | } | |
2212 | ||
2213 | /* Complete obtaining the lock procedure. */ | |
2214 | rc = ldlm_cli_enqueue_fini(aa->oa_exp, req, aa->oa_ei->ei_type, 1, | |
2215 | mode, flags, lvb, lvb_len, &handle, rc); | |
2216 | /* Complete osc stuff. */ | |
2217 | rc = osc_enqueue_fini(req, aa->oa_lvb, aa->oa_upcall, aa->oa_cookie, | |
2218 | flags, aa->oa_agl, rc); | |
2219 | ||
2220 | OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_CANCEL_RACE, 10); | |
2221 | ||
2222 | /* Release the lock for async request. */ | |
2223 | if (lustre_handle_is_used(&handle) && rc == ELDLM_OK) | |
2224 | /* | |
2225 | * Releases a reference taken by ldlm_cli_enqueue(), if it is | |
2226 | * not already released by | |
2227 | * ldlm_cli_enqueue_fini()->failed_lock_cleanup() | |
2228 | */ | |
2229 | ldlm_lock_decref(&handle, mode); | |
2230 | ||
2231 | LASSERTF(lock != NULL, "lockh %p, req %p, aa %p - client evicted?\n", | |
2232 | aa->oa_lockh, req, aa); | |
2233 | ldlm_lock_decref(&handle, mode); | |
2234 | LDLM_LOCK_PUT(lock); | |
2235 | return rc; | |
2236 | } | |
2237 | ||
d7e09d03 PT |
2238 | struct ptlrpc_request_set *PTLRPCD_SET = (void *)1; |
2239 | ||
2240 | /* When enqueuing asynchronously, locks are not ordered, we can obtain a lock | |
2241 | * from the 2nd OSC before a lock from the 1st one. This does not deadlock with | |
2242 | * other synchronous requests, however keeping some locks and trying to obtain | |
2243 | * others may take a considerable amount of time in a case of ost failure; and | |
2244 | * when other sync requests do not get released lock from a client, the client | |
2245 | * is excluded from the cluster -- such scenarious make the life difficult, so | |
2246 | * release locks just after they are obtained. */ | |
2247 | int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id, | |
2248 | __u64 *flags, ldlm_policy_data_t *policy, | |
2249 | struct ost_lvb *lvb, int kms_valid, | |
2250 | obd_enqueue_update_f upcall, void *cookie, | |
2251 | struct ldlm_enqueue_info *einfo, | |
2252 | struct lustre_handle *lockh, | |
2253 | struct ptlrpc_request_set *rqset, int async, int agl) | |
2254 | { | |
2255 | struct obd_device *obd = exp->exp_obd; | |
2256 | struct ptlrpc_request *req = NULL; | |
2257 | int intent = *flags & LDLM_FL_HAS_INTENT; | |
875332d4 | 2258 | __u64 match_lvb = (agl != 0 ? 0 : LDLM_FL_LVB_READY); |
d7e09d03 PT |
2259 | ldlm_mode_t mode; |
2260 | int rc; | |
d7e09d03 PT |
2261 | |
2262 | /* Filesystem lock extents are extended to page boundaries so that | |
2263 | * dealing with the page cache is a little smoother. */ | |
2264 | policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK; | |
2265 | policy->l_extent.end |= ~CFS_PAGE_MASK; | |
2266 | ||
2267 | /* | |
2268 | * kms is not valid when either object is completely fresh (so that no | |
2269 | * locks are cached), or object was evicted. In the latter case cached | |
2270 | * lock cannot be used, because it would prime inode state with | |
2271 | * potentially stale LVB. | |
2272 | */ | |
2273 | if (!kms_valid) | |
2274 | goto no_match; | |
2275 | ||
2276 | /* Next, search for already existing extent locks that will cover us */ | |
2277 | /* If we're trying to read, we also search for an existing PW lock. The | |
2278 | * VFS and page cache already protect us locally, so lots of readers/ | |
2279 | * writers can share a single PW lock. | |
2280 | * | |
2281 | * There are problems with conversion deadlocks, so instead of | |
2282 | * converting a read lock to a write lock, we'll just enqueue a new | |
2283 | * one. | |
2284 | * | |
2285 | * At some point we should cancel the read lock instead of making them | |
2286 | * send us a blocking callback, but there are problems with canceling | |
2287 | * locks out from other users right now, too. */ | |
2288 | mode = einfo->ei_mode; | |
2289 | if (einfo->ei_mode == LCK_PR) | |
2290 | mode |= LCK_PW; | |
2291 | mode = ldlm_lock_match(obd->obd_namespace, *flags | match_lvb, res_id, | |
2292 | einfo->ei_type, policy, mode, lockh, 0); | |
2293 | if (mode) { | |
2294 | struct ldlm_lock *matched = ldlm_handle2lock(lockh); | |
2295 | ||
2296 | if ((agl != 0) && !(matched->l_flags & LDLM_FL_LVB_READY)) { | |
2297 | /* For AGL, if enqueue RPC is sent but the lock is not | |
2298 | * granted, then skip to process this strpe. | |
2299 | * Return -ECANCELED to tell the caller. */ | |
2300 | ldlm_lock_decref(lockh, mode); | |
2301 | LDLM_LOCK_PUT(matched); | |
0a3bdb00 | 2302 | return -ECANCELED; |
d7e09d03 PT |
2303 | } else if (osc_set_lock_data_with_check(matched, einfo)) { |
2304 | *flags |= LDLM_FL_LVB_READY; | |
2305 | /* addref the lock only if not async requests and PW | |
2306 | * lock is matched whereas we asked for PR. */ | |
2307 | if (!rqset && einfo->ei_mode != mode) | |
2308 | ldlm_lock_addref(lockh, LCK_PR); | |
2309 | if (intent) { | |
2310 | /* I would like to be able to ASSERT here that | |
2311 | * rss <= kms, but I can't, for reasons which | |
2312 | * are explained in lov_enqueue() */ | |
2313 | } | |
2314 | ||
2315 | /* We already have a lock, and it's referenced. | |
2316 | * | |
2317 | * At this point, the cl_lock::cll_state is CLS_QUEUING, | |
2318 | * AGL upcall may change it to CLS_HELD directly. */ | |
2319 | (*upcall)(cookie, ELDLM_OK); | |
2320 | ||
2321 | if (einfo->ei_mode != mode) | |
2322 | ldlm_lock_decref(lockh, LCK_PW); | |
2323 | else if (rqset) | |
2324 | /* For async requests, decref the lock. */ | |
2325 | ldlm_lock_decref(lockh, einfo->ei_mode); | |
2326 | LDLM_LOCK_PUT(matched); | |
0a3bdb00 | 2327 | return ELDLM_OK; |
d7e09d03 PT |
2328 | } else { |
2329 | ldlm_lock_decref(lockh, mode); | |
2330 | LDLM_LOCK_PUT(matched); | |
2331 | } | |
2332 | } | |
2333 | ||
2334 | no_match: | |
2335 | if (intent) { | |
2336 | LIST_HEAD(cancels); | |
2337 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), | |
2338 | &RQF_LDLM_ENQUEUE_LVB); | |
2339 | if (req == NULL) | |
0a3bdb00 | 2340 | return -ENOMEM; |
d7e09d03 PT |
2341 | |
2342 | rc = ldlm_prep_enqueue_req(exp, req, &cancels, 0); | |
2343 | if (rc) { | |
2344 | ptlrpc_request_free(req); | |
0a3bdb00 | 2345 | return rc; |
d7e09d03 PT |
2346 | } |
2347 | ||
2348 | req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER, | |
ec83e611 | 2349 | sizeof(*lvb)); |
d7e09d03 PT |
2350 | ptlrpc_request_set_replen(req); |
2351 | } | |
2352 | ||
2353 | /* users of osc_enqueue() can pass this flag for ldlm_lock_match() */ | |
2354 | *flags &= ~LDLM_FL_BLOCK_GRANTED; | |
2355 | ||
2356 | rc = ldlm_cli_enqueue(exp, &req, einfo, res_id, policy, flags, lvb, | |
2357 | sizeof(*lvb), LVB_T_OST, lockh, async); | |
2358 | if (rqset) { | |
2359 | if (!rc) { | |
2360 | struct osc_enqueue_args *aa; | |
2361 | CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args)); | |
2362 | aa = ptlrpc_req_async_args(req); | |
2363 | aa->oa_ei = einfo; | |
2364 | aa->oa_exp = exp; | |
2365 | aa->oa_flags = flags; | |
2366 | aa->oa_upcall = upcall; | |
2367 | aa->oa_cookie = cookie; | |
2368 | aa->oa_lvb = lvb; | |
2369 | aa->oa_lockh = lockh; | |
2370 | aa->oa_agl = !!agl; | |
2371 | ||
2372 | req->rq_interpret_reply = | |
2373 | (ptlrpc_interpterer_t)osc_enqueue_interpret; | |
2374 | if (rqset == PTLRPCD_SET) | |
2375 | ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1); | |
2376 | else | |
2377 | ptlrpc_set_add_req(rqset, req); | |
2378 | } else if (intent) { | |
2379 | ptlrpc_req_finished(req); | |
2380 | } | |
0a3bdb00 | 2381 | return rc; |
d7e09d03 PT |
2382 | } |
2383 | ||
2384 | rc = osc_enqueue_fini(req, lvb, upcall, cookie, flags, agl, rc); | |
2385 | if (intent) | |
2386 | ptlrpc_req_finished(req); | |
2387 | ||
0a3bdb00 | 2388 | return rc; |
d7e09d03 PT |
2389 | } |
2390 | ||
d7e09d03 PT |
2391 | int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id, |
2392 | __u32 type, ldlm_policy_data_t *policy, __u32 mode, | |
875332d4 | 2393 | __u64 *flags, void *data, struct lustre_handle *lockh, |
d7e09d03 PT |
2394 | int unref) |
2395 | { | |
2396 | struct obd_device *obd = exp->exp_obd; | |
875332d4 | 2397 | __u64 lflags = *flags; |
d7e09d03 | 2398 | ldlm_mode_t rc; |
d7e09d03 PT |
2399 | |
2400 | if (OBD_FAIL_CHECK(OBD_FAIL_OSC_MATCH)) | |
0a3bdb00 | 2401 | return -EIO; |
d7e09d03 PT |
2402 | |
2403 | /* Filesystem lock extents are extended to page boundaries so that | |
2404 | * dealing with the page cache is a little smoother */ | |
2405 | policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK; | |
2406 | policy->l_extent.end |= ~CFS_PAGE_MASK; | |
2407 | ||
2408 | /* Next, search for already existing extent locks that will cover us */ | |
2409 | /* If we're trying to read, we also search for an existing PW lock. The | |
2410 | * VFS and page cache already protect us locally, so lots of readers/ | |
2411 | * writers can share a single PW lock. */ | |
2412 | rc = mode; | |
2413 | if (mode == LCK_PR) | |
2414 | rc |= LCK_PW; | |
2415 | rc = ldlm_lock_match(obd->obd_namespace, lflags, | |
2416 | res_id, type, policy, rc, lockh, unref); | |
2417 | if (rc) { | |
2418 | if (data != NULL) { | |
2419 | if (!osc_set_data_with_check(lockh, data)) { | |
2420 | if (!(lflags & LDLM_FL_TEST_LOCK)) | |
2421 | ldlm_lock_decref(lockh, rc); | |
0a3bdb00 | 2422 | return 0; |
d7e09d03 PT |
2423 | } |
2424 | } | |
2425 | if (!(lflags & LDLM_FL_TEST_LOCK) && mode != rc) { | |
2426 | ldlm_lock_addref(lockh, LCK_PR); | |
2427 | ldlm_lock_decref(lockh, LCK_PW); | |
2428 | } | |
0a3bdb00 | 2429 | return rc; |
d7e09d03 | 2430 | } |
0a3bdb00 | 2431 | return rc; |
d7e09d03 PT |
2432 | } |
2433 | ||
2434 | int osc_cancel_base(struct lustre_handle *lockh, __u32 mode) | |
2435 | { | |
d7e09d03 PT |
2436 | if (unlikely(mode == LCK_GROUP)) |
2437 | ldlm_lock_decref_and_cancel(lockh, mode); | |
2438 | else | |
2439 | ldlm_lock_decref(lockh, mode); | |
2440 | ||
0a3bdb00 | 2441 | return 0; |
d7e09d03 PT |
2442 | } |
2443 | ||
d7e09d03 PT |
2444 | static int osc_statfs_interpret(const struct lu_env *env, |
2445 | struct ptlrpc_request *req, | |
2446 | struct osc_async_args *aa, int rc) | |
2447 | { | |
2448 | struct obd_statfs *msfs; | |
d7e09d03 PT |
2449 | |
2450 | if (rc == -EBADR) | |
2451 | /* The request has in fact never been sent | |
2452 | * due to issues at a higher level (LOV). | |
2453 | * Exit immediately since the caller is | |
2454 | * aware of the problem and takes care | |
2455 | * of the clean up */ | |
0a3bdb00 | 2456 | return rc; |
d7e09d03 PT |
2457 | |
2458 | if ((rc == -ENOTCONN || rc == -EAGAIN) && | |
26c4ea46 TJ |
2459 | (aa->aa_oi->oi_flags & OBD_STATFS_NODELAY)) { |
2460 | rc = 0; | |
2461 | goto out; | |
2462 | } | |
d7e09d03 PT |
2463 | |
2464 | if (rc != 0) | |
26c4ea46 | 2465 | goto out; |
d7e09d03 PT |
2466 | |
2467 | msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS); | |
2468 | if (msfs == NULL) { | |
26c4ea46 TJ |
2469 | rc = -EPROTO; |
2470 | goto out; | |
d7e09d03 PT |
2471 | } |
2472 | ||
2473 | *aa->aa_oi->oi_osfs = *msfs; | |
2474 | out: | |
2475 | rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc); | |
0a3bdb00 | 2476 | return rc; |
d7e09d03 PT |
2477 | } |
2478 | ||
2479 | static int osc_statfs_async(struct obd_export *exp, | |
2480 | struct obd_info *oinfo, __u64 max_age, | |
2481 | struct ptlrpc_request_set *rqset) | |
2482 | { | |
2483 | struct obd_device *obd = class_exp2obd(exp); | |
2484 | struct ptlrpc_request *req; | |
2485 | struct osc_async_args *aa; | |
2486 | int rc; | |
d7e09d03 PT |
2487 | |
2488 | /* We could possibly pass max_age in the request (as an absolute | |
2489 | * timestamp or a "seconds.usec ago") so the target can avoid doing | |
2490 | * extra calls into the filesystem if that isn't necessary (e.g. | |
2491 | * during mount that would help a bit). Having relative timestamps | |
2492 | * is not so great if request processing is slow, while absolute | |
2493 | * timestamps are not ideal because they need time synchronization. */ | |
2494 | req = ptlrpc_request_alloc(obd->u.cli.cl_import, &RQF_OST_STATFS); | |
2495 | if (req == NULL) | |
0a3bdb00 | 2496 | return -ENOMEM; |
d7e09d03 PT |
2497 | |
2498 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS); | |
2499 | if (rc) { | |
2500 | ptlrpc_request_free(req); | |
0a3bdb00 | 2501 | return rc; |
d7e09d03 PT |
2502 | } |
2503 | ptlrpc_request_set_replen(req); | |
2504 | req->rq_request_portal = OST_CREATE_PORTAL; | |
2505 | ptlrpc_at_set_req_timeout(req); | |
2506 | ||
2507 | if (oinfo->oi_flags & OBD_STATFS_NODELAY) { | |
2508 | /* procfs requests not want stat in wait for avoid deadlock */ | |
2509 | req->rq_no_resend = 1; | |
2510 | req->rq_no_delay = 1; | |
2511 | } | |
2512 | ||
2513 | req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_statfs_interpret; | |
2514 | CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args)); | |
2515 | aa = ptlrpc_req_async_args(req); | |
2516 | aa->aa_oi = oinfo; | |
2517 | ||
2518 | ptlrpc_set_add_req(rqset, req); | |
0a3bdb00 | 2519 | return 0; |
d7e09d03 PT |
2520 | } |
2521 | ||
2522 | static int osc_statfs(const struct lu_env *env, struct obd_export *exp, | |
2523 | struct obd_statfs *osfs, __u64 max_age, __u32 flags) | |
2524 | { | |
2525 | struct obd_device *obd = class_exp2obd(exp); | |
2526 | struct obd_statfs *msfs; | |
2527 | struct ptlrpc_request *req; | |
2528 | struct obd_import *imp = NULL; | |
2529 | int rc; | |
d7e09d03 PT |
2530 | |
2531 | /*Since the request might also come from lprocfs, so we need | |
2532 | *sync this with client_disconnect_export Bug15684*/ | |
2533 | down_read(&obd->u.cli.cl_sem); | |
2534 | if (obd->u.cli.cl_import) | |
2535 | imp = class_import_get(obd->u.cli.cl_import); | |
2536 | up_read(&obd->u.cli.cl_sem); | |
2537 | if (!imp) | |
0a3bdb00 | 2538 | return -ENODEV; |
d7e09d03 PT |
2539 | |
2540 | /* We could possibly pass max_age in the request (as an absolute | |
2541 | * timestamp or a "seconds.usec ago") so the target can avoid doing | |
2542 | * extra calls into the filesystem if that isn't necessary (e.g. | |
2543 | * during mount that would help a bit). Having relative timestamps | |
2544 | * is not so great if request processing is slow, while absolute | |
2545 | * timestamps are not ideal because they need time synchronization. */ | |
2546 | req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS); | |
2547 | ||
2548 | class_import_put(imp); | |
2549 | ||
2550 | if (req == NULL) | |
0a3bdb00 | 2551 | return -ENOMEM; |
d7e09d03 PT |
2552 | |
2553 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS); | |
2554 | if (rc) { | |
2555 | ptlrpc_request_free(req); | |
0a3bdb00 | 2556 | return rc; |
d7e09d03 PT |
2557 | } |
2558 | ptlrpc_request_set_replen(req); | |
2559 | req->rq_request_portal = OST_CREATE_PORTAL; | |
2560 | ptlrpc_at_set_req_timeout(req); | |
2561 | ||
2562 | if (flags & OBD_STATFS_NODELAY) { | |
2563 | /* procfs requests not want stat in wait for avoid deadlock */ | |
2564 | req->rq_no_resend = 1; | |
2565 | req->rq_no_delay = 1; | |
2566 | } | |
2567 | ||
2568 | rc = ptlrpc_queue_wait(req); | |
2569 | if (rc) | |
26c4ea46 | 2570 | goto out; |
d7e09d03 PT |
2571 | |
2572 | msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS); | |
2573 | if (msfs == NULL) { | |
26c4ea46 TJ |
2574 | rc = -EPROTO; |
2575 | goto out; | |
d7e09d03 PT |
2576 | } |
2577 | ||
2578 | *osfs = *msfs; | |
2579 | ||
d7e09d03 PT |
2580 | out: |
2581 | ptlrpc_req_finished(req); | |
2582 | return rc; | |
2583 | } | |
2584 | ||
2585 | /* Retrieve object striping information. | |
2586 | * | |
2587 | * @lmmu is a pointer to an in-core struct with lmm_ost_count indicating | |
2588 | * the maximum number of OST indices which will fit in the user buffer. | |
2589 | * lmm_magic must be LOV_MAGIC (we only use 1 slot here). | |
2590 | */ | |
2591 | static int osc_getstripe(struct lov_stripe_md *lsm, struct lov_user_md *lump) | |
2592 | { | |
2593 | /* we use lov_user_md_v3 because it is larger than lov_user_md_v1 */ | |
2594 | struct lov_user_md_v3 lum, *lumk; | |
2595 | struct lov_user_ost_data_v1 *lmm_objects; | |
2596 | int rc = 0, lum_size; | |
d7e09d03 PT |
2597 | |
2598 | if (!lsm) | |
0a3bdb00 | 2599 | return -ENODATA; |
d7e09d03 PT |
2600 | |
2601 | /* we only need the header part from user space to get lmm_magic and | |
2602 | * lmm_stripe_count, (the header part is common to v1 and v3) */ | |
2603 | lum_size = sizeof(struct lov_user_md_v1); | |
2604 | if (copy_from_user(&lum, lump, lum_size)) | |
0a3bdb00 | 2605 | return -EFAULT; |
d7e09d03 PT |
2606 | |
2607 | if ((lum.lmm_magic != LOV_USER_MAGIC_V1) && | |
2608 | (lum.lmm_magic != LOV_USER_MAGIC_V3)) | |
0a3bdb00 | 2609 | return -EINVAL; |
d7e09d03 PT |
2610 | |
2611 | /* lov_user_md_vX and lov_mds_md_vX must have the same size */ | |
2612 | LASSERT(sizeof(struct lov_user_md_v1) == sizeof(struct lov_mds_md_v1)); | |
2613 | LASSERT(sizeof(struct lov_user_md_v3) == sizeof(struct lov_mds_md_v3)); | |
2614 | LASSERT(sizeof(lum.lmm_objects[0]) == sizeof(lumk->lmm_objects[0])); | |
2615 | ||
2616 | /* we can use lov_mds_md_size() to compute lum_size | |
2617 | * because lov_user_md_vX and lov_mds_md_vX have the same size */ | |
2618 | if (lum.lmm_stripe_count > 0) { | |
2619 | lum_size = lov_mds_md_size(lum.lmm_stripe_count, lum.lmm_magic); | |
7795178d | 2620 | lumk = kzalloc(lum_size, GFP_NOFS); |
d7e09d03 | 2621 | if (!lumk) |
0a3bdb00 | 2622 | return -ENOMEM; |
d7e09d03 PT |
2623 | |
2624 | if (lum.lmm_magic == LOV_USER_MAGIC_V1) | |
2625 | lmm_objects = | |
2626 | &(((struct lov_user_md_v1 *)lumk)->lmm_objects[0]); | |
2627 | else | |
2628 | lmm_objects = &(lumk->lmm_objects[0]); | |
2629 | lmm_objects->l_ost_oi = lsm->lsm_oi; | |
2630 | } else { | |
2631 | lum_size = lov_mds_md_size(0, lum.lmm_magic); | |
2632 | lumk = &lum; | |
2633 | } | |
2634 | ||
2635 | lumk->lmm_oi = lsm->lsm_oi; | |
2636 | lumk->lmm_stripe_count = 1; | |
2637 | ||
2638 | if (copy_to_user(lump, lumk, lum_size)) | |
2639 | rc = -EFAULT; | |
2640 | ||
2641 | if (lumk != &lum) | |
7795178d | 2642 | kfree(lumk); |
d7e09d03 | 2643 | |
0a3bdb00 | 2644 | return rc; |
d7e09d03 PT |
2645 | } |
2646 | ||
2647 | ||
2648 | static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len, | |
2649 | void *karg, void *uarg) | |
2650 | { | |
2651 | struct obd_device *obd = exp->exp_obd; | |
2652 | struct obd_ioctl_data *data = karg; | |
2653 | int err = 0; | |
d7e09d03 PT |
2654 | |
2655 | if (!try_module_get(THIS_MODULE)) { | |
2656 | CERROR("Can't get module. Is it alive?"); | |
2657 | return -EINVAL; | |
2658 | } | |
2659 | switch (cmd) { | |
2660 | case OBD_IOC_LOV_GET_CONFIG: { | |
2661 | char *buf; | |
2662 | struct lov_desc *desc; | |
2663 | struct obd_uuid uuid; | |
2664 | ||
2665 | buf = NULL; | |
2666 | len = 0; | |
26c4ea46 TJ |
2667 | if (obd_ioctl_getdata(&buf, &len, (void *)uarg)) { |
2668 | err = -EINVAL; | |
2669 | goto out; | |
2670 | } | |
d7e09d03 PT |
2671 | |
2672 | data = (struct obd_ioctl_data *)buf; | |
2673 | ||
2674 | if (sizeof(*desc) > data->ioc_inllen1) { | |
2675 | obd_ioctl_freedata(buf, len); | |
26c4ea46 TJ |
2676 | err = -EINVAL; |
2677 | goto out; | |
d7e09d03 PT |
2678 | } |
2679 | ||
2680 | if (data->ioc_inllen2 < sizeof(uuid)) { | |
2681 | obd_ioctl_freedata(buf, len); | |
26c4ea46 TJ |
2682 | err = -EINVAL; |
2683 | goto out; | |
d7e09d03 PT |
2684 | } |
2685 | ||
2686 | desc = (struct lov_desc *)data->ioc_inlbuf1; | |
2687 | desc->ld_tgt_count = 1; | |
2688 | desc->ld_active_tgt_count = 1; | |
2689 | desc->ld_default_stripe_count = 1; | |
2690 | desc->ld_default_stripe_size = 0; | |
2691 | desc->ld_default_stripe_offset = 0; | |
2692 | desc->ld_pattern = 0; | |
2693 | memcpy(&desc->ld_uuid, &obd->obd_uuid, sizeof(uuid)); | |
2694 | ||
2695 | memcpy(data->ioc_inlbuf2, &obd->obd_uuid, sizeof(uuid)); | |
2696 | ||
2697 | err = copy_to_user((void *)uarg, buf, len); | |
2698 | if (err) | |
2699 | err = -EFAULT; | |
2700 | obd_ioctl_freedata(buf, len); | |
26c4ea46 | 2701 | goto out; |
d7e09d03 PT |
2702 | } |
2703 | case LL_IOC_LOV_SETSTRIPE: | |
2704 | err = obd_alloc_memmd(exp, karg); | |
2705 | if (err > 0) | |
2706 | err = 0; | |
26c4ea46 | 2707 | goto out; |
d7e09d03 PT |
2708 | case LL_IOC_LOV_GETSTRIPE: |
2709 | err = osc_getstripe(karg, uarg); | |
26c4ea46 | 2710 | goto out; |
d7e09d03 PT |
2711 | case OBD_IOC_CLIENT_RECOVER: |
2712 | err = ptlrpc_recover_import(obd->u.cli.cl_import, | |
2713 | data->ioc_inlbuf1, 0); | |
2714 | if (err > 0) | |
2715 | err = 0; | |
26c4ea46 | 2716 | goto out; |
d7e09d03 PT |
2717 | case IOC_OSC_SET_ACTIVE: |
2718 | err = ptlrpc_set_import_active(obd->u.cli.cl_import, | |
2719 | data->ioc_offset); | |
26c4ea46 | 2720 | goto out; |
d7e09d03 PT |
2721 | case OBD_IOC_POLL_QUOTACHECK: |
2722 | err = osc_quota_poll_check(exp, (struct if_quotacheck *)karg); | |
26c4ea46 | 2723 | goto out; |
d7e09d03 PT |
2724 | case OBD_IOC_PING_TARGET: |
2725 | err = ptlrpc_obd_ping(obd); | |
26c4ea46 | 2726 | goto out; |
d7e09d03 PT |
2727 | default: |
2728 | CDEBUG(D_INODE, "unrecognised ioctl %#x by %s\n", | |
2729 | cmd, current_comm()); | |
26c4ea46 TJ |
2730 | err = -ENOTTY; |
2731 | goto out; | |
d7e09d03 PT |
2732 | } |
2733 | out: | |
2734 | module_put(THIS_MODULE); | |
2735 | return err; | |
2736 | } | |
2737 | ||
2738 | static int osc_get_info(const struct lu_env *env, struct obd_export *exp, | |
21aef7d9 | 2739 | u32 keylen, void *key, __u32 *vallen, void *val, |
d7e09d03 PT |
2740 | struct lov_stripe_md *lsm) |
2741 | { | |
d7e09d03 | 2742 | if (!vallen || !val) |
0a3bdb00 | 2743 | return -EFAULT; |
d7e09d03 PT |
2744 | |
2745 | if (KEY_IS(KEY_LOCK_TO_STRIPE)) { | |
2746 | __u32 *stripe = val; | |
2747 | *vallen = sizeof(*stripe); | |
2748 | *stripe = 0; | |
0a3bdb00 | 2749 | return 0; |
d7e09d03 PT |
2750 | } else if (KEY_IS(KEY_LAST_ID)) { |
2751 | struct ptlrpc_request *req; | |
21aef7d9 | 2752 | u64 *reply; |
d7e09d03 PT |
2753 | char *tmp; |
2754 | int rc; | |
2755 | ||
2756 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), | |
2757 | &RQF_OST_GET_INFO_LAST_ID); | |
2758 | if (req == NULL) | |
0a3bdb00 | 2759 | return -ENOMEM; |
d7e09d03 PT |
2760 | |
2761 | req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY, | |
2762 | RCL_CLIENT, keylen); | |
2763 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO); | |
2764 | if (rc) { | |
2765 | ptlrpc_request_free(req); | |
0a3bdb00 | 2766 | return rc; |
d7e09d03 PT |
2767 | } |
2768 | ||
2769 | tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY); | |
2770 | memcpy(tmp, key, keylen); | |
2771 | ||
2772 | req->rq_no_delay = req->rq_no_resend = 1; | |
2773 | ptlrpc_request_set_replen(req); | |
2774 | rc = ptlrpc_queue_wait(req); | |
2775 | if (rc) | |
26c4ea46 | 2776 | goto out; |
d7e09d03 PT |
2777 | |
2778 | reply = req_capsule_server_get(&req->rq_pill, &RMF_OBD_ID); | |
26c4ea46 TJ |
2779 | if (reply == NULL) { |
2780 | rc = -EPROTO; | |
2781 | goto out; | |
2782 | } | |
d7e09d03 | 2783 | |
21aef7d9 | 2784 | *((u64 *)val) = *reply; |
d7e09d03 PT |
2785 | out: |
2786 | ptlrpc_req_finished(req); | |
0a3bdb00 | 2787 | return rc; |
d7e09d03 | 2788 | } else if (KEY_IS(KEY_FIEMAP)) { |
9d865439 AB |
2789 | struct ll_fiemap_info_key *fm_key = |
2790 | (struct ll_fiemap_info_key *)key; | |
2791 | struct ldlm_res_id res_id; | |
2792 | ldlm_policy_data_t policy; | |
2793 | struct lustre_handle lockh; | |
2794 | ldlm_mode_t mode = 0; | |
2795 | struct ptlrpc_request *req; | |
2796 | struct ll_user_fiemap *reply; | |
2797 | char *tmp; | |
2798 | int rc; | |
2799 | ||
2800 | if (!(fm_key->fiemap.fm_flags & FIEMAP_FLAG_SYNC)) | |
2801 | goto skip_locking; | |
2802 | ||
2803 | policy.l_extent.start = fm_key->fiemap.fm_start & | |
2804 | CFS_PAGE_MASK; | |
2805 | ||
2806 | if (OBD_OBJECT_EOF - fm_key->fiemap.fm_length <= | |
2807 | fm_key->fiemap.fm_start + PAGE_CACHE_SIZE - 1) | |
2808 | policy.l_extent.end = OBD_OBJECT_EOF; | |
2809 | else | |
2810 | policy.l_extent.end = (fm_key->fiemap.fm_start + | |
2811 | fm_key->fiemap.fm_length + | |
2812 | PAGE_CACHE_SIZE - 1) & CFS_PAGE_MASK; | |
2813 | ||
2814 | ostid_build_res_name(&fm_key->oa.o_oi, &res_id); | |
2815 | mode = ldlm_lock_match(exp->exp_obd->obd_namespace, | |
2816 | LDLM_FL_BLOCK_GRANTED | | |
2817 | LDLM_FL_LVB_READY, | |
2818 | &res_id, LDLM_EXTENT, &policy, | |
2819 | LCK_PR | LCK_PW, &lockh, 0); | |
2820 | if (mode) { /* lock is cached on client */ | |
2821 | if (mode != LCK_PR) { | |
2822 | ldlm_lock_addref(&lockh, LCK_PR); | |
2823 | ldlm_lock_decref(&lockh, LCK_PW); | |
2824 | } | |
2825 | } else { /* no cached lock, needs acquire lock on server side */ | |
2826 | fm_key->oa.o_valid |= OBD_MD_FLFLAGS; | |
2827 | fm_key->oa.o_flags |= OBD_FL_SRVLOCK; | |
2828 | } | |
d7e09d03 | 2829 | |
9d865439 | 2830 | skip_locking: |
d7e09d03 PT |
2831 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), |
2832 | &RQF_OST_GET_INFO_FIEMAP); | |
26c4ea46 TJ |
2833 | if (req == NULL) { |
2834 | rc = -ENOMEM; | |
2835 | goto drop_lock; | |
2836 | } | |
d7e09d03 PT |
2837 | |
2838 | req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_KEY, | |
2839 | RCL_CLIENT, keylen); | |
2840 | req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL, | |
2841 | RCL_CLIENT, *vallen); | |
2842 | req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL, | |
2843 | RCL_SERVER, *vallen); | |
2844 | ||
2845 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO); | |
2846 | if (rc) { | |
2847 | ptlrpc_request_free(req); | |
26c4ea46 | 2848 | goto drop_lock; |
d7e09d03 PT |
2849 | } |
2850 | ||
2851 | tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_KEY); | |
2852 | memcpy(tmp, key, keylen); | |
2853 | tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_VAL); | |
2854 | memcpy(tmp, val, *vallen); | |
2855 | ||
2856 | ptlrpc_request_set_replen(req); | |
2857 | rc = ptlrpc_queue_wait(req); | |
2858 | if (rc) | |
26c4ea46 | 2859 | goto fini_req; |
d7e09d03 PT |
2860 | |
2861 | reply = req_capsule_server_get(&req->rq_pill, &RMF_FIEMAP_VAL); | |
26c4ea46 TJ |
2862 | if (reply == NULL) { |
2863 | rc = -EPROTO; | |
2864 | goto fini_req; | |
2865 | } | |
d7e09d03 PT |
2866 | |
2867 | memcpy(val, reply, *vallen); | |
9d865439 | 2868 | fini_req: |
d7e09d03 | 2869 | ptlrpc_req_finished(req); |
9d865439 AB |
2870 | drop_lock: |
2871 | if (mode) | |
2872 | ldlm_lock_decref(&lockh, LCK_PR); | |
0a3bdb00 | 2873 | return rc; |
d7e09d03 PT |
2874 | } |
2875 | ||
0a3bdb00 | 2876 | return -EINVAL; |
d7e09d03 PT |
2877 | } |
2878 | ||
2879 | static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp, | |
21aef7d9 | 2880 | u32 keylen, void *key, u32 vallen, |
d7e09d03 PT |
2881 | void *val, struct ptlrpc_request_set *set) |
2882 | { | |
2883 | struct ptlrpc_request *req; | |
2884 | struct obd_device *obd = exp->exp_obd; | |
2885 | struct obd_import *imp = class_exp2cliimp(exp); | |
2886 | char *tmp; | |
2887 | int rc; | |
d7e09d03 PT |
2888 | |
2889 | OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_SHUTDOWN, 10); | |
2890 | ||
2891 | if (KEY_IS(KEY_CHECKSUM)) { | |
2892 | if (vallen != sizeof(int)) | |
0a3bdb00 | 2893 | return -EINVAL; |
d7e09d03 | 2894 | exp->exp_obd->u.cli.cl_checksum = (*(int *)val) ? 1 : 0; |
0a3bdb00 | 2895 | return 0; |
d7e09d03 PT |
2896 | } |
2897 | ||
2898 | if (KEY_IS(KEY_SPTLRPC_CONF)) { | |
2899 | sptlrpc_conf_client_adapt(obd); | |
0a3bdb00 | 2900 | return 0; |
d7e09d03 PT |
2901 | } |
2902 | ||
2903 | if (KEY_IS(KEY_FLUSH_CTX)) { | |
2904 | sptlrpc_import_flush_my_ctx(imp); | |
0a3bdb00 | 2905 | return 0; |
d7e09d03 PT |
2906 | } |
2907 | ||
2908 | if (KEY_IS(KEY_CACHE_SET)) { | |
2909 | struct client_obd *cli = &obd->u.cli; | |
2910 | ||
2911 | LASSERT(cli->cl_cache == NULL); /* only once */ | |
2912 | cli->cl_cache = (struct cl_client_cache *)val; | |
2913 | atomic_inc(&cli->cl_cache->ccc_users); | |
2914 | cli->cl_lru_left = &cli->cl_cache->ccc_lru_left; | |
2915 | ||
2916 | /* add this osc into entity list */ | |
2917 | LASSERT(list_empty(&cli->cl_lru_osc)); | |
2918 | spin_lock(&cli->cl_cache->ccc_lru_lock); | |
2919 | list_add(&cli->cl_lru_osc, &cli->cl_cache->ccc_lru); | |
2920 | spin_unlock(&cli->cl_cache->ccc_lru_lock); | |
2921 | ||
0a3bdb00 | 2922 | return 0; |
d7e09d03 PT |
2923 | } |
2924 | ||
2925 | if (KEY_IS(KEY_CACHE_LRU_SHRINK)) { | |
2926 | struct client_obd *cli = &obd->u.cli; | |
2927 | int nr = atomic_read(&cli->cl_lru_in_list) >> 1; | |
2928 | int target = *(int *)val; | |
2929 | ||
2930 | nr = osc_lru_shrink(cli, min(nr, target)); | |
2931 | *(int *)val -= nr; | |
0a3bdb00 | 2932 | return 0; |
d7e09d03 PT |
2933 | } |
2934 | ||
2935 | if (!set && !KEY_IS(KEY_GRANT_SHRINK)) | |
0a3bdb00 | 2936 | return -EINVAL; |
d7e09d03 PT |
2937 | |
2938 | /* We pass all other commands directly to OST. Since nobody calls osc | |
2939 | methods directly and everybody is supposed to go through LOV, we | |
2940 | assume lov checked invalid values for us. | |
2941 | The only recognised values so far are evict_by_nid and mds_conn. | |
2942 | Even if something bad goes through, we'd get a -EINVAL from OST | |
2943 | anyway. */ | |
2944 | ||
2945 | req = ptlrpc_request_alloc(imp, KEY_IS(KEY_GRANT_SHRINK) ? | |
2946 | &RQF_OST_SET_GRANT_INFO : | |
2947 | &RQF_OBD_SET_INFO); | |
2948 | if (req == NULL) | |
0a3bdb00 | 2949 | return -ENOMEM; |
d7e09d03 PT |
2950 | |
2951 | req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY, | |
2952 | RCL_CLIENT, keylen); | |
2953 | if (!KEY_IS(KEY_GRANT_SHRINK)) | |
2954 | req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL, | |
2955 | RCL_CLIENT, vallen); | |
2956 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SET_INFO); | |
2957 | if (rc) { | |
2958 | ptlrpc_request_free(req); | |
0a3bdb00 | 2959 | return rc; |
d7e09d03 PT |
2960 | } |
2961 | ||
2962 | tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY); | |
2963 | memcpy(tmp, key, keylen); | |
2964 | tmp = req_capsule_client_get(&req->rq_pill, KEY_IS(KEY_GRANT_SHRINK) ? | |
2965 | &RMF_OST_BODY : | |
2966 | &RMF_SETINFO_VAL); | |
2967 | memcpy(tmp, val, vallen); | |
2968 | ||
2969 | if (KEY_IS(KEY_GRANT_SHRINK)) { | |
f024bad4 | 2970 | struct osc_brw_async_args *aa; |
d7e09d03 PT |
2971 | struct obdo *oa; |
2972 | ||
2973 | CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args)); | |
2974 | aa = ptlrpc_req_async_args(req); | |
2975 | OBDO_ALLOC(oa); | |
2976 | if (!oa) { | |
2977 | ptlrpc_req_finished(req); | |
0a3bdb00 | 2978 | return -ENOMEM; |
d7e09d03 PT |
2979 | } |
2980 | *oa = ((struct ost_body *)val)->oa; | |
2981 | aa->aa_oa = oa; | |
2982 | req->rq_interpret_reply = osc_shrink_grant_interpret; | |
2983 | } | |
2984 | ||
2985 | ptlrpc_request_set_replen(req); | |
2986 | if (!KEY_IS(KEY_GRANT_SHRINK)) { | |
2987 | LASSERT(set != NULL); | |
2988 | ptlrpc_set_add_req(set, req); | |
2989 | ptlrpc_check_set(NULL, set); | |
2990 | } else | |
2991 | ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1); | |
2992 | ||
0a3bdb00 | 2993 | return 0; |
d7e09d03 PT |
2994 | } |
2995 | ||
d7e09d03 PT |
2996 | static int osc_reconnect(const struct lu_env *env, |
2997 | struct obd_export *exp, struct obd_device *obd, | |
2998 | struct obd_uuid *cluuid, | |
2999 | struct obd_connect_data *data, | |
3000 | void *localdata) | |
3001 | { | |
3002 | struct client_obd *cli = &obd->u.cli; | |
3003 | ||
3004 | if (data != NULL && (data->ocd_connect_flags & OBD_CONNECT_GRANT)) { | |
3005 | long lost_grant; | |
3006 | ||
3007 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
3008 | data->ocd_grant = (cli->cl_avail_grant + cli->cl_dirty) ?: | |
3009 | 2 * cli_brw_size(obd); | |
3010 | lost_grant = cli->cl_lost_grant; | |
3011 | cli->cl_lost_grant = 0; | |
3012 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
3013 | ||
2d00bd17 JP |
3014 | CDEBUG(D_RPCTRACE, "ocd_connect_flags: %#llx ocd_version: %d ocd_grant: %d, lost: %ld.\n", |
3015 | data->ocd_connect_flags, | |
d7e09d03 PT |
3016 | data->ocd_version, data->ocd_grant, lost_grant); |
3017 | } | |
3018 | ||
0a3bdb00 | 3019 | return 0; |
d7e09d03 PT |
3020 | } |
3021 | ||
3022 | static int osc_disconnect(struct obd_export *exp) | |
3023 | { | |
3024 | struct obd_device *obd = class_exp2obd(exp); | |
d7e09d03 PT |
3025 | int rc; |
3026 | ||
d7e09d03 PT |
3027 | rc = client_disconnect_export(exp); |
3028 | /** | |
3029 | * Initially we put del_shrink_grant before disconnect_export, but it | |
3030 | * causes the following problem if setup (connect) and cleanup | |
3031 | * (disconnect) are tangled together. | |
3032 | * connect p1 disconnect p2 | |
3033 | * ptlrpc_connect_import | |
3034 | * ............... class_manual_cleanup | |
3035 | * osc_disconnect | |
3036 | * del_shrink_grant | |
3037 | * ptlrpc_connect_interrupt | |
3038 | * init_grant_shrink | |
3039 | * add this client to shrink list | |
3040 | * cleanup_osc | |
3041 | * Bang! pinger trigger the shrink. | |
3042 | * So the osc should be disconnected from the shrink list, after we | |
3043 | * are sure the import has been destroyed. BUG18662 | |
3044 | */ | |
3045 | if (obd->u.cli.cl_import == NULL) | |
3046 | osc_del_shrink_grant(&obd->u.cli); | |
3047 | return rc; | |
3048 | } | |
3049 | ||
3050 | static int osc_import_event(struct obd_device *obd, | |
3051 | struct obd_import *imp, | |
3052 | enum obd_import_event event) | |
3053 | { | |
3054 | struct client_obd *cli; | |
3055 | int rc = 0; | |
3056 | ||
d7e09d03 PT |
3057 | LASSERT(imp->imp_obd == obd); |
3058 | ||
3059 | switch (event) { | |
3060 | case IMP_EVENT_DISCON: { | |
3061 | cli = &obd->u.cli; | |
3062 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
3063 | cli->cl_avail_grant = 0; | |
3064 | cli->cl_lost_grant = 0; | |
3065 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
3066 | break; | |
3067 | } | |
3068 | case IMP_EVENT_INACTIVE: { | |
3069 | rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL); | |
3070 | break; | |
3071 | } | |
3072 | case IMP_EVENT_INVALIDATE: { | |
3073 | struct ldlm_namespace *ns = obd->obd_namespace; | |
3074 | struct lu_env *env; | |
3075 | int refcheck; | |
3076 | ||
3077 | env = cl_env_get(&refcheck); | |
3078 | if (!IS_ERR(env)) { | |
3079 | /* Reset grants */ | |
3080 | cli = &obd->u.cli; | |
3081 | /* all pages go to failing rpcs due to the invalid | |
3082 | * import */ | |
3083 | osc_io_unplug(env, cli, NULL, PDL_POLICY_ROUND); | |
3084 | ||
3085 | ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY); | |
3086 | cl_env_put(env, &refcheck); | |
3087 | } else | |
3088 | rc = PTR_ERR(env); | |
3089 | break; | |
3090 | } | |
3091 | case IMP_EVENT_ACTIVE: { | |
3092 | rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL); | |
3093 | break; | |
3094 | } | |
3095 | case IMP_EVENT_OCD: { | |
3096 | struct obd_connect_data *ocd = &imp->imp_connect_data; | |
3097 | ||
3098 | if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT) | |
3099 | osc_init_grant(&obd->u.cli, ocd); | |
3100 | ||
3101 | /* See bug 7198 */ | |
3102 | if (ocd->ocd_connect_flags & OBD_CONNECT_REQPORTAL) | |
3103 | imp->imp_client->cli_request_portal =OST_REQUEST_PORTAL; | |
3104 | ||
3105 | rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL); | |
3106 | break; | |
3107 | } | |
3108 | case IMP_EVENT_DEACTIVATE: { | |
3109 | rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DEACTIVATE, NULL); | |
3110 | break; | |
3111 | } | |
3112 | case IMP_EVENT_ACTIVATE: { | |
3113 | rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVATE, NULL); | |
3114 | break; | |
3115 | } | |
3116 | default: | |
3117 | CERROR("Unknown import event %d\n", event); | |
3118 | LBUG(); | |
3119 | } | |
0a3bdb00 | 3120 | return rc; |
d7e09d03 PT |
3121 | } |
3122 | ||
3123 | /** | |
3124 | * Determine whether the lock can be canceled before replaying the lock | |
3125 | * during recovery, see bug16774 for detailed information. | |
3126 | * | |
3127 | * \retval zero the lock can't be canceled | |
3128 | * \retval other ok to cancel | |
3129 | */ | |
3130 | static int osc_cancel_for_recovery(struct ldlm_lock *lock) | |
3131 | { | |
3132 | check_res_locked(lock->l_resource); | |
3133 | ||
3134 | /* | |
3135 | * Cancel all unused extent lock in granted mode LCK_PR or LCK_CR. | |
3136 | * | |
3137 | * XXX as a future improvement, we can also cancel unused write lock | |
3138 | * if it doesn't have dirty data and active mmaps. | |
3139 | */ | |
3140 | if (lock->l_resource->lr_type == LDLM_EXTENT && | |
3141 | (lock->l_granted_mode == LCK_PR || | |
3142 | lock->l_granted_mode == LCK_CR) && | |
3143 | (osc_dlm_lock_pageref(lock) == 0)) | |
0a3bdb00 | 3144 | return 1; |
d7e09d03 | 3145 | |
0a3bdb00 | 3146 | return 0; |
d7e09d03 PT |
3147 | } |
3148 | ||
3149 | static int brw_queue_work(const struct lu_env *env, void *data) | |
3150 | { | |
3151 | struct client_obd *cli = data; | |
3152 | ||
3153 | CDEBUG(D_CACHE, "Run writeback work for client obd %p.\n", cli); | |
3154 | ||
3155 | osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME); | |
0a3bdb00 | 3156 | return 0; |
d7e09d03 PT |
3157 | } |
3158 | ||
3159 | int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg) | |
3160 | { | |
ea7893bb | 3161 | struct lprocfs_static_vars lvars = { NULL }; |
d7e09d03 PT |
3162 | struct client_obd *cli = &obd->u.cli; |
3163 | void *handler; | |
3164 | int rc; | |
d7e09d03 PT |
3165 | |
3166 | rc = ptlrpcd_addref(); | |
3167 | if (rc) | |
0a3bdb00 | 3168 | return rc; |
d7e09d03 PT |
3169 | |
3170 | rc = client_obd_setup(obd, lcfg); | |
3171 | if (rc) | |
26c4ea46 | 3172 | goto out_ptlrpcd; |
d7e09d03 PT |
3173 | |
3174 | handler = ptlrpcd_alloc_work(cli->cl_import, brw_queue_work, cli); | |
26c4ea46 TJ |
3175 | if (IS_ERR(handler)) { |
3176 | rc = PTR_ERR(handler); | |
3177 | goto out_client_setup; | |
3178 | } | |
d7e09d03 PT |
3179 | cli->cl_writeback_work = handler; |
3180 | ||
3181 | rc = osc_quota_setup(obd); | |
3182 | if (rc) | |
26c4ea46 | 3183 | goto out_ptlrpcd_work; |
d7e09d03 PT |
3184 | |
3185 | cli->cl_grant_shrink_interval = GRANT_SHRINK_INTERVAL; | |
3186 | lprocfs_osc_init_vars(&lvars); | |
9b801302 | 3187 | if (lprocfs_obd_setup(obd, lvars.obd_vars, lvars.sysfs_vars) == 0) { |
d7e09d03 PT |
3188 | lproc_osc_attach_seqstat(obd); |
3189 | sptlrpc_lprocfs_cliobd_attach(obd); | |
3190 | ptlrpc_lprocfs_register_obd(obd); | |
3191 | } | |
3192 | ||
3193 | /* We need to allocate a few requests more, because | |
3194 | * brw_interpret tries to create new requests before freeing | |
3195 | * previous ones, Ideally we want to have 2x max_rpcs_in_flight | |
3196 | * reserved, but I'm afraid that might be too much wasted RAM | |
3197 | * in fact, so 2 is just my guess and still should work. */ | |
3198 | cli->cl_import->imp_rq_pool = | |
3199 | ptlrpc_init_rq_pool(cli->cl_max_rpcs_in_flight + 2, | |
3200 | OST_MAXREQSIZE, | |
3201 | ptlrpc_add_rqs_to_pool); | |
3202 | ||
3203 | INIT_LIST_HEAD(&cli->cl_grant_shrink_list); | |
3204 | ns_register_cancel(obd->obd_namespace, osc_cancel_for_recovery); | |
0a3bdb00 | 3205 | return rc; |
d7e09d03 PT |
3206 | |
3207 | out_ptlrpcd_work: | |
3208 | ptlrpcd_destroy_work(handler); | |
3209 | out_client_setup: | |
3210 | client_obd_cleanup(obd); | |
3211 | out_ptlrpcd: | |
3212 | ptlrpcd_decref(); | |
0a3bdb00 | 3213 | return rc; |
d7e09d03 PT |
3214 | } |
3215 | ||
3216 | static int osc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage) | |
3217 | { | |
d7e09d03 PT |
3218 | switch (stage) { |
3219 | case OBD_CLEANUP_EARLY: { | |
3220 | struct obd_import *imp; | |
3221 | imp = obd->u.cli.cl_import; | |
3222 | CDEBUG(D_HA, "Deactivating import %s\n", obd->obd_name); | |
3223 | /* ptlrpc_abort_inflight to stop an mds_lov_synchronize */ | |
3224 | ptlrpc_deactivate_import(imp); | |
3225 | spin_lock(&imp->imp_lock); | |
3226 | imp->imp_pingable = 0; | |
3227 | spin_unlock(&imp->imp_lock); | |
3228 | break; | |
3229 | } | |
3230 | case OBD_CLEANUP_EXPORTS: { | |
3231 | struct client_obd *cli = &obd->u.cli; | |
3232 | /* LU-464 | |
3233 | * for echo client, export may be on zombie list, wait for | |
3234 | * zombie thread to cull it, because cli.cl_import will be | |
3235 | * cleared in client_disconnect_export(): | |
3236 | * class_export_destroy() -> obd_cleanup() -> | |
3237 | * echo_device_free() -> echo_client_cleanup() -> | |
3238 | * obd_disconnect() -> osc_disconnect() -> | |
3239 | * client_disconnect_export() | |
3240 | */ | |
3241 | obd_zombie_barrier(); | |
3242 | if (cli->cl_writeback_work) { | |
3243 | ptlrpcd_destroy_work(cli->cl_writeback_work); | |
3244 | cli->cl_writeback_work = NULL; | |
3245 | } | |
3246 | obd_cleanup_client_import(obd); | |
3247 | ptlrpc_lprocfs_unregister_obd(obd); | |
3248 | lprocfs_obd_cleanup(obd); | |
d7e09d03 PT |
3249 | break; |
3250 | } | |
3251 | } | |
41f8d410 | 3252 | return 0; |
d7e09d03 PT |
3253 | } |
3254 | ||
3255 | int osc_cleanup(struct obd_device *obd) | |
3256 | { | |
3257 | struct client_obd *cli = &obd->u.cli; | |
3258 | int rc; | |
3259 | ||
d7e09d03 PT |
3260 | /* lru cleanup */ |
3261 | if (cli->cl_cache != NULL) { | |
3262 | LASSERT(atomic_read(&cli->cl_cache->ccc_users) > 0); | |
3263 | spin_lock(&cli->cl_cache->ccc_lru_lock); | |
3264 | list_del_init(&cli->cl_lru_osc); | |
3265 | spin_unlock(&cli->cl_cache->ccc_lru_lock); | |
3266 | cli->cl_lru_left = NULL; | |
3267 | atomic_dec(&cli->cl_cache->ccc_users); | |
3268 | cli->cl_cache = NULL; | |
3269 | } | |
3270 | ||
3271 | /* free memory of osc quota cache */ | |
3272 | osc_quota_cleanup(obd); | |
3273 | ||
3274 | rc = client_obd_cleanup(obd); | |
3275 | ||
3276 | ptlrpcd_decref(); | |
0a3bdb00 | 3277 | return rc; |
d7e09d03 PT |
3278 | } |
3279 | ||
3280 | int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg) | |
3281 | { | |
ea7893bb | 3282 | struct lprocfs_static_vars lvars = { NULL }; |
d7e09d03 PT |
3283 | int rc = 0; |
3284 | ||
3285 | lprocfs_osc_init_vars(&lvars); | |
3286 | ||
3287 | switch (lcfg->lcfg_command) { | |
3288 | default: | |
3289 | rc = class_process_proc_param(PARAM_OSC, lvars.obd_vars, | |
3290 | lcfg, obd); | |
3291 | if (rc > 0) | |
3292 | rc = 0; | |
3293 | break; | |
3294 | } | |
3295 | ||
fbe7c6c7 | 3296 | return rc; |
d7e09d03 PT |
3297 | } |
3298 | ||
21aef7d9 | 3299 | static int osc_process_config(struct obd_device *obd, u32 len, void *buf) |
d7e09d03 PT |
3300 | { |
3301 | return osc_process_config_base(obd, buf); | |
3302 | } | |
3303 | ||
3304 | struct obd_ops osc_obd_ops = { | |
3305 | .o_owner = THIS_MODULE, | |
3306 | .o_setup = osc_setup, | |
3307 | .o_precleanup = osc_precleanup, | |
3308 | .o_cleanup = osc_cleanup, | |
3309 | .o_add_conn = client_import_add_conn, | |
3310 | .o_del_conn = client_import_del_conn, | |
3311 | .o_connect = client_connect_import, | |
3312 | .o_reconnect = osc_reconnect, | |
3313 | .o_disconnect = osc_disconnect, | |
3314 | .o_statfs = osc_statfs, | |
3315 | .o_statfs_async = osc_statfs_async, | |
3316 | .o_packmd = osc_packmd, | |
3317 | .o_unpackmd = osc_unpackmd, | |
3318 | .o_create = osc_create, | |
3319 | .o_destroy = osc_destroy, | |
3320 | .o_getattr = osc_getattr, | |
3321 | .o_getattr_async = osc_getattr_async, | |
3322 | .o_setattr = osc_setattr, | |
3323 | .o_setattr_async = osc_setattr_async, | |
d7e09d03 | 3324 | .o_find_cbdata = osc_find_cbdata, |
d7e09d03 PT |
3325 | .o_iocontrol = osc_iocontrol, |
3326 | .o_get_info = osc_get_info, | |
3327 | .o_set_info_async = osc_set_info_async, | |
3328 | .o_import_event = osc_import_event, | |
d7e09d03 PT |
3329 | .o_process_config = osc_process_config, |
3330 | .o_quotactl = osc_quotactl, | |
3331 | .o_quotacheck = osc_quotacheck, | |
3332 | }; | |
3333 | ||
3334 | extern struct lu_kmem_descr osc_caches[]; | |
3335 | extern spinlock_t osc_ast_guard; | |
3336 | extern struct lock_class_key osc_ast_guard_class; | |
3337 | ||
b47ea4bb | 3338 | static int __init osc_init(void) |
d7e09d03 | 3339 | { |
ea7893bb | 3340 | struct lprocfs_static_vars lvars = { NULL }; |
d7e09d03 | 3341 | int rc; |
d7e09d03 PT |
3342 | |
3343 | /* print an address of _any_ initialized kernel symbol from this | |
3344 | * module, to allow debugging with gdb that doesn't support data | |
3345 | * symbols from modules.*/ | |
3346 | CDEBUG(D_INFO, "Lustre OSC module (%p).\n", &osc_caches); | |
3347 | ||
3348 | rc = lu_kmem_init(osc_caches); | |
a55e0f44 | 3349 | if (rc) |
0a3bdb00 | 3350 | return rc; |
d7e09d03 PT |
3351 | |
3352 | lprocfs_osc_init_vars(&lvars); | |
3353 | ||
2962b440 | 3354 | rc = class_register_type(&osc_obd_ops, NULL, |
d7e09d03 PT |
3355 | LUSTRE_OSC_NAME, &osc_device_type); |
3356 | if (rc) { | |
3357 | lu_kmem_fini(osc_caches); | |
0a3bdb00 | 3358 | return rc; |
d7e09d03 PT |
3359 | } |
3360 | ||
3361 | spin_lock_init(&osc_ast_guard); | |
3362 | lockdep_set_class(&osc_ast_guard, &osc_ast_guard_class); | |
3363 | ||
0a3bdb00 | 3364 | return rc; |
d7e09d03 PT |
3365 | } |
3366 | ||
3367 | static void /*__exit*/ osc_exit(void) | |
3368 | { | |
3369 | class_unregister_type(LUSTRE_OSC_NAME); | |
3370 | lu_kmem_fini(osc_caches); | |
3371 | } | |
3372 | ||
3373 | MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>"); | |
3374 | MODULE_DESCRIPTION("Lustre Object Storage Client (OSC)"); | |
3375 | MODULE_LICENSE("GPL"); | |
6960736c | 3376 | MODULE_VERSION(LUSTRE_VERSION_STRING); |
d7e09d03 | 3377 | |
6960736c GKH |
3378 | module_init(osc_init); |
3379 | module_exit(osc_exit); |