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 | |
6a5b99a4 | 18 | * http://www.gnu.org/licenses/gpl-2.0.html |
d7e09d03 | 19 | * |
d7e09d03 PT |
20 | * GPL HEADER END |
21 | */ | |
22 | /* | |
23 | * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. | |
24 | * Use is subject to license terms. | |
25 | * | |
1dc563a6 | 26 | * Copyright (c) 2011, 2015, Intel Corporation. |
d7e09d03 PT |
27 | */ |
28 | /* | |
29 | * This file is part of Lustre, http://www.lustre.org/ | |
30 | * Lustre is a trademark of Sun Microsystems, Inc. | |
31 | */ | |
32 | ||
33 | #define DEBUG_SUBSYSTEM S_OSC | |
34 | ||
9fdaf8c0 | 35 | #include "../../include/linux/libcfs/libcfs.h" |
d7e09d03 | 36 | |
3ee30015 GKH |
37 | #include "../include/lustre_dlm.h" |
38 | #include "../include/lustre_net.h" | |
39 | #include "../include/lustre/lustre_user.h" | |
40 | #include "../include/obd_cksum.h" | |
d7e09d03 | 41 | |
3ee30015 GKH |
42 | #include "../include/lustre_ha.h" |
43 | #include "../include/lprocfs_status.h" | |
8877d3bf | 44 | #include "../include/lustre/lustre_ioctl.h" |
3ee30015 GKH |
45 | #include "../include/lustre_debug.h" |
46 | #include "../include/lustre_param.h" | |
47 | #include "../include/lustre_fid.h" | |
dd45f477 | 48 | #include "../include/obd_class.h" |
aefd9d71 | 49 | #include "../include/obd.h" |
d7e09d03 PT |
50 | #include "osc_internal.h" |
51 | #include "osc_cl_internal.h" | |
52 | ||
aefd9d71 LX |
53 | atomic_t osc_pool_req_count; |
54 | unsigned int osc_reqpool_maxreqcount; | |
55 | struct ptlrpc_request_pool *osc_rq_pool; | |
56 | ||
57 | /* max memory used for request pool, unit is MB */ | |
58 | static unsigned int osc_reqpool_mem_max = 5; | |
59 | module_param(osc_reqpool_mem_max, uint, 0444); | |
60 | ||
f024bad4 JH |
61 | struct osc_brw_async_args { |
62 | struct obdo *aa_oa; | |
63 | int aa_requested_nob; | |
64 | int aa_nio_count; | |
65 | u32 aa_page_count; | |
66 | int aa_resends; | |
67 | struct brw_page **aa_ppga; | |
68 | struct client_obd *aa_cli; | |
69 | struct list_head aa_oaps; | |
70 | struct list_head aa_exts; | |
f024bad4 JH |
71 | struct cl_req *aa_clerq; |
72 | }; | |
73 | ||
74 | struct osc_async_args { | |
75 | struct obd_info *aa_oi; | |
76 | }; | |
77 | ||
78 | struct osc_setattr_args { | |
79 | struct obdo *sa_oa; | |
80 | obd_enqueue_update_f sa_upcall; | |
81 | void *sa_cookie; | |
82 | }; | |
83 | ||
84 | struct osc_fsync_args { | |
85 | struct obd_info *fa_oi; | |
86 | obd_enqueue_update_f fa_upcall; | |
87 | void *fa_cookie; | |
88 | }; | |
89 | ||
90 | struct osc_enqueue_args { | |
91 | struct obd_export *oa_exp; | |
06563b56 JX |
92 | enum ldlm_type oa_type; |
93 | enum ldlm_mode oa_mode; | |
f024bad4 | 94 | __u64 *oa_flags; |
06563b56 | 95 | osc_enqueue_upcall_f oa_upcall; |
f024bad4 JH |
96 | void *oa_cookie; |
97 | struct ost_lvb *oa_lvb; | |
06563b56 | 98 | struct lustre_handle oa_lockh; |
f024bad4 JH |
99 | unsigned int oa_agl:1; |
100 | }; | |
101 | ||
21aef7d9 | 102 | static void osc_release_ppga(struct brw_page **ppga, u32 count); |
d7e09d03 PT |
103 | static int brw_interpret(const struct lu_env *env, |
104 | struct ptlrpc_request *req, void *data, int rc); | |
d7e09d03 PT |
105 | |
106 | /* Pack OSC object metadata for disk storage (LE byte order). */ | |
107 | static int osc_packmd(struct obd_export *exp, struct lov_mds_md **lmmp, | |
108 | struct lov_stripe_md *lsm) | |
109 | { | |
110 | int lmm_size; | |
d7e09d03 PT |
111 | |
112 | lmm_size = sizeof(**lmmp); | |
7f1ae4c0 | 113 | if (!lmmp) |
0a3bdb00 | 114 | return lmm_size; |
d7e09d03 | 115 | |
7f1ae4c0 | 116 | if (*lmmp && !lsm) { |
7795178d | 117 | kfree(*lmmp); |
d7e09d03 | 118 | *lmmp = NULL; |
0a3bdb00 | 119 | return 0; |
7f1ae4c0 | 120 | } else if (unlikely(lsm && ostid_id(&lsm->lsm_oi) == 0)) { |
0a3bdb00 | 121 | return -EBADF; |
d7e09d03 PT |
122 | } |
123 | ||
7f1ae4c0 | 124 | if (!*lmmp) { |
7795178d | 125 | *lmmp = kzalloc(lmm_size, GFP_NOFS); |
3408e9ae | 126 | if (!*lmmp) |
0a3bdb00 | 127 | return -ENOMEM; |
d7e09d03 PT |
128 | } |
129 | ||
130 | if (lsm) | |
131 | ostid_cpu_to_le(&lsm->lsm_oi, &(*lmmp)->lmm_oi); | |
132 | ||
0a3bdb00 | 133 | return lmm_size; |
d7e09d03 PT |
134 | } |
135 | ||
136 | /* Unpack OSC object metadata from disk storage (LE byte order). */ | |
137 | static int osc_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp, | |
138 | struct lov_mds_md *lmm, int lmm_bytes) | |
139 | { | |
140 | int lsm_size; | |
141 | struct obd_import *imp = class_exp2cliimp(exp); | |
d7e09d03 | 142 | |
7f1ae4c0 | 143 | if (lmm) { |
d7e09d03 PT |
144 | if (lmm_bytes < sizeof(*lmm)) { |
145 | CERROR("%s: lov_mds_md too small: %d, need %d\n", | |
146 | exp->exp_obd->obd_name, lmm_bytes, | |
147 | (int)sizeof(*lmm)); | |
0a3bdb00 | 148 | return -EINVAL; |
d7e09d03 PT |
149 | } |
150 | /* XXX LOV_MAGIC etc check? */ | |
151 | ||
152 | if (unlikely(ostid_id(&lmm->lmm_oi) == 0)) { | |
153 | CERROR("%s: zero lmm_object_id: rc = %d\n", | |
154 | exp->exp_obd->obd_name, -EINVAL); | |
0a3bdb00 | 155 | return -EINVAL; |
d7e09d03 PT |
156 | } |
157 | } | |
158 | ||
159 | lsm_size = lov_stripe_md_size(1); | |
7f1ae4c0 | 160 | if (!lsmp) |
0a3bdb00 | 161 | return lsm_size; |
d7e09d03 | 162 | |
7f1ae4c0 | 163 | if (*lsmp && !lmm) { |
7795178d JL |
164 | kfree((*lsmp)->lsm_oinfo[0]); |
165 | kfree(*lsmp); | |
d7e09d03 | 166 | *lsmp = NULL; |
0a3bdb00 | 167 | return 0; |
d7e09d03 PT |
168 | } |
169 | ||
7f1ae4c0 | 170 | if (!*lsmp) { |
7795178d | 171 | *lsmp = kzalloc(lsm_size, GFP_NOFS); |
7f1ae4c0 | 172 | if (unlikely(!*lsmp)) |
0a3bdb00 | 173 | return -ENOMEM; |
7795178d JL |
174 | (*lsmp)->lsm_oinfo[0] = kzalloc(sizeof(struct lov_oinfo), |
175 | GFP_NOFS); | |
7f1ae4c0 | 176 | if (unlikely(!(*lsmp)->lsm_oinfo[0])) { |
7795178d | 177 | kfree(*lsmp); |
0a3bdb00 | 178 | return -ENOMEM; |
d7e09d03 PT |
179 | } |
180 | loi_init((*lsmp)->lsm_oinfo[0]); | |
181 | } else if (unlikely(ostid_id(&(*lsmp)->lsm_oi) == 0)) { | |
0a3bdb00 | 182 | return -EBADF; |
d7e09d03 PT |
183 | } |
184 | ||
7f1ae4c0 | 185 | if (lmm) |
d7e09d03 PT |
186 | /* XXX zero *lsmp? */ |
187 | ostid_le_to_cpu(&lmm->lmm_oi, &(*lsmp)->lsm_oi); | |
188 | ||
7f1ae4c0 | 189 | if (imp && |
d7e09d03 PT |
190 | (imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_MAXBYTES)) |
191 | (*lsmp)->lsm_maxbytes = imp->imp_connect_data.ocd_maxbytes; | |
192 | else | |
193 | (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES; | |
194 | ||
0a3bdb00 | 195 | return lsm_size; |
d7e09d03 PT |
196 | } |
197 | ||
d7e09d03 PT |
198 | static inline void osc_pack_req_body(struct ptlrpc_request *req, |
199 | struct obd_info *oinfo) | |
200 | { | |
201 | struct ost_body *body; | |
202 | ||
203 | body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); | |
204 | LASSERT(body); | |
205 | ||
3b2f75fd | 206 | lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, |
207 | oinfo->oi_oa); | |
d7e09d03 PT |
208 | } |
209 | ||
210 | static int osc_getattr_interpret(const struct lu_env *env, | |
211 | struct ptlrpc_request *req, | |
212 | struct osc_async_args *aa, int rc) | |
213 | { | |
214 | struct ost_body *body; | |
d7e09d03 PT |
215 | |
216 | if (rc != 0) | |
26c4ea46 | 217 | goto out; |
d7e09d03 PT |
218 | |
219 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
220 | if (body) { | |
221 | CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode); | |
3b2f75fd | 222 | lustre_get_wire_obdo(&req->rq_import->imp_connect_data, |
223 | aa->aa_oi->oi_oa, &body->oa); | |
d7e09d03 PT |
224 | |
225 | /* This should really be sent by the OST */ | |
226 | aa->aa_oi->oi_oa->o_blksize = DT_MAX_BRW_SIZE; | |
227 | aa->aa_oi->oi_oa->o_valid |= OBD_MD_FLBLKSZ; | |
228 | } else { | |
229 | CDEBUG(D_INFO, "can't unpack ost_body\n"); | |
230 | rc = -EPROTO; | |
231 | aa->aa_oi->oi_oa->o_valid = 0; | |
232 | } | |
233 | out: | |
234 | rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc); | |
0a3bdb00 | 235 | return rc; |
d7e09d03 PT |
236 | } |
237 | ||
238 | static int osc_getattr_async(struct obd_export *exp, struct obd_info *oinfo, | |
239 | struct ptlrpc_request_set *set) | |
240 | { | |
241 | struct ptlrpc_request *req; | |
242 | struct osc_async_args *aa; | |
29ac6840 | 243 | int rc; |
d7e09d03 PT |
244 | |
245 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR); | |
7f1ae4c0 | 246 | if (!req) |
0a3bdb00 | 247 | return -ENOMEM; |
d7e09d03 | 248 | |
d7e09d03 PT |
249 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR); |
250 | if (rc) { | |
251 | ptlrpc_request_free(req); | |
0a3bdb00 | 252 | return rc; |
d7e09d03 PT |
253 | } |
254 | ||
255 | osc_pack_req_body(req, oinfo); | |
256 | ||
257 | ptlrpc_request_set_replen(req); | |
258 | req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_getattr_interpret; | |
259 | ||
260 | CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args)); | |
261 | aa = ptlrpc_req_async_args(req); | |
262 | aa->aa_oi = oinfo; | |
263 | ||
264 | ptlrpc_set_add_req(set, req); | |
0a3bdb00 | 265 | return 0; |
d7e09d03 PT |
266 | } |
267 | ||
268 | static int osc_getattr(const struct lu_env *env, struct obd_export *exp, | |
269 | struct obd_info *oinfo) | |
270 | { | |
271 | struct ptlrpc_request *req; | |
29ac6840 CH |
272 | struct ost_body *body; |
273 | int rc; | |
d7e09d03 PT |
274 | |
275 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR); | |
7f1ae4c0 | 276 | if (!req) |
0a3bdb00 | 277 | return -ENOMEM; |
d7e09d03 | 278 | |
d7e09d03 PT |
279 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR); |
280 | if (rc) { | |
281 | ptlrpc_request_free(req); | |
0a3bdb00 | 282 | return rc; |
d7e09d03 PT |
283 | } |
284 | ||
285 | osc_pack_req_body(req, oinfo); | |
286 | ||
287 | ptlrpc_request_set_replen(req); | |
288 | ||
289 | rc = ptlrpc_queue_wait(req); | |
290 | if (rc) | |
26c4ea46 | 291 | goto out; |
d7e09d03 PT |
292 | |
293 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
7f1ae4c0 | 294 | if (!body) { |
26c4ea46 TJ |
295 | rc = -EPROTO; |
296 | goto out; | |
297 | } | |
d7e09d03 PT |
298 | |
299 | CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode); | |
3b2f75fd | 300 | lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oinfo->oi_oa, |
301 | &body->oa); | |
d7e09d03 PT |
302 | |
303 | oinfo->oi_oa->o_blksize = cli_brw_size(exp->exp_obd); | |
304 | oinfo->oi_oa->o_valid |= OBD_MD_FLBLKSZ; | |
305 | ||
d7e09d03 PT |
306 | out: |
307 | ptlrpc_req_finished(req); | |
308 | return rc; | |
309 | } | |
310 | ||
311 | static int osc_setattr(const struct lu_env *env, struct obd_export *exp, | |
312 | struct obd_info *oinfo, struct obd_trans_info *oti) | |
313 | { | |
314 | struct ptlrpc_request *req; | |
29ac6840 CH |
315 | struct ost_body *body; |
316 | int rc; | |
d7e09d03 PT |
317 | |
318 | LASSERT(oinfo->oi_oa->o_valid & OBD_MD_FLGROUP); | |
319 | ||
320 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR); | |
7f1ae4c0 | 321 | if (!req) |
0a3bdb00 | 322 | return -ENOMEM; |
d7e09d03 | 323 | |
d7e09d03 PT |
324 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR); |
325 | if (rc) { | |
326 | ptlrpc_request_free(req); | |
0a3bdb00 | 327 | return rc; |
d7e09d03 PT |
328 | } |
329 | ||
330 | osc_pack_req_body(req, oinfo); | |
331 | ||
332 | ptlrpc_request_set_replen(req); | |
333 | ||
334 | rc = ptlrpc_queue_wait(req); | |
335 | if (rc) | |
26c4ea46 | 336 | goto out; |
d7e09d03 PT |
337 | |
338 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
7f1ae4c0 | 339 | if (!body) { |
26c4ea46 TJ |
340 | rc = -EPROTO; |
341 | goto out; | |
342 | } | |
d7e09d03 | 343 | |
3b2f75fd | 344 | lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oinfo->oi_oa, |
345 | &body->oa); | |
d7e09d03 | 346 | |
d7e09d03 PT |
347 | out: |
348 | ptlrpc_req_finished(req); | |
0a3bdb00 | 349 | return rc; |
d7e09d03 PT |
350 | } |
351 | ||
352 | static int osc_setattr_interpret(const struct lu_env *env, | |
353 | struct ptlrpc_request *req, | |
354 | struct osc_setattr_args *sa, int rc) | |
355 | { | |
356 | struct ost_body *body; | |
d7e09d03 PT |
357 | |
358 | if (rc != 0) | |
26c4ea46 | 359 | goto out; |
d7e09d03 PT |
360 | |
361 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
7f1ae4c0 | 362 | if (!body) { |
26c4ea46 TJ |
363 | rc = -EPROTO; |
364 | goto out; | |
365 | } | |
d7e09d03 | 366 | |
3b2f75fd | 367 | lustre_get_wire_obdo(&req->rq_import->imp_connect_data, sa->sa_oa, |
368 | &body->oa); | |
d7e09d03 PT |
369 | out: |
370 | rc = sa->sa_upcall(sa->sa_cookie, rc); | |
0a3bdb00 | 371 | return rc; |
d7e09d03 PT |
372 | } |
373 | ||
374 | int osc_setattr_async_base(struct obd_export *exp, struct obd_info *oinfo, | |
375 | struct obd_trans_info *oti, | |
376 | obd_enqueue_update_f upcall, void *cookie, | |
377 | struct ptlrpc_request_set *rqset) | |
378 | { | |
29ac6840 | 379 | struct ptlrpc_request *req; |
d7e09d03 | 380 | struct osc_setattr_args *sa; |
29ac6840 | 381 | int rc; |
d7e09d03 PT |
382 | |
383 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR); | |
7f1ae4c0 | 384 | if (!req) |
0a3bdb00 | 385 | return -ENOMEM; |
d7e09d03 | 386 | |
d7e09d03 PT |
387 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR); |
388 | if (rc) { | |
389 | ptlrpc_request_free(req); | |
0a3bdb00 | 390 | return rc; |
d7e09d03 PT |
391 | } |
392 | ||
393 | if (oti && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE) | |
394 | oinfo->oi_oa->o_lcookie = *oti->oti_logcookies; | |
395 | ||
396 | osc_pack_req_body(req, oinfo); | |
397 | ||
398 | ptlrpc_request_set_replen(req); | |
399 | ||
400 | /* do mds to ost setattr asynchronously */ | |
401 | if (!rqset) { | |
402 | /* Do not wait for response. */ | |
c5c4c6fa | 403 | ptlrpcd_add_req(req); |
d7e09d03 PT |
404 | } else { |
405 | req->rq_interpret_reply = | |
406 | (ptlrpc_interpterer_t)osc_setattr_interpret; | |
407 | ||
e72f36e2 | 408 | CLASSERT(sizeof(*sa) <= sizeof(req->rq_async_args)); |
d7e09d03 PT |
409 | sa = ptlrpc_req_async_args(req); |
410 | sa->sa_oa = oinfo->oi_oa; | |
411 | sa->sa_upcall = upcall; | |
412 | sa->sa_cookie = cookie; | |
413 | ||
414 | if (rqset == PTLRPCD_SET) | |
c5c4c6fa | 415 | ptlrpcd_add_req(req); |
d7e09d03 PT |
416 | else |
417 | ptlrpc_set_add_req(rqset, req); | |
418 | } | |
419 | ||
0a3bdb00 | 420 | return 0; |
d7e09d03 PT |
421 | } |
422 | ||
423 | static int osc_setattr_async(struct obd_export *exp, struct obd_info *oinfo, | |
424 | struct obd_trans_info *oti, | |
425 | struct ptlrpc_request_set *rqset) | |
426 | { | |
427 | return osc_setattr_async_base(exp, oinfo, oti, | |
428 | oinfo->oi_cb_up, oinfo, rqset); | |
429 | } | |
430 | ||
74d4ec11 SB |
431 | static int osc_real_create(struct obd_export *exp, struct obdo *oa, |
432 | struct lov_stripe_md **ea, | |
433 | struct obd_trans_info *oti) | |
d7e09d03 PT |
434 | { |
435 | struct ptlrpc_request *req; | |
29ac6840 CH |
436 | struct ost_body *body; |
437 | struct lov_stripe_md *lsm; | |
438 | int rc; | |
d7e09d03 PT |
439 | |
440 | LASSERT(oa); | |
441 | LASSERT(ea); | |
442 | ||
443 | lsm = *ea; | |
444 | if (!lsm) { | |
445 | rc = obd_alloc_memmd(exp, &lsm); | |
446 | if (rc < 0) | |
0a3bdb00 | 447 | return rc; |
d7e09d03 PT |
448 | } |
449 | ||
450 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_CREATE); | |
7f1ae4c0 | 451 | if (!req) { |
26c4ea46 TJ |
452 | rc = -ENOMEM; |
453 | goto out; | |
454 | } | |
d7e09d03 PT |
455 | |
456 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_CREATE); | |
457 | if (rc) { | |
458 | ptlrpc_request_free(req); | |
26c4ea46 | 459 | goto out; |
d7e09d03 PT |
460 | } |
461 | ||
462 | body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); | |
463 | LASSERT(body); | |
3b2f75fd | 464 | |
465 | lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa); | |
d7e09d03 PT |
466 | |
467 | ptlrpc_request_set_replen(req); | |
468 | ||
469 | if ((oa->o_valid & OBD_MD_FLFLAGS) && | |
470 | oa->o_flags == OBD_FL_DELORPHAN) { | |
471 | DEBUG_REQ(D_HA, req, | |
472 | "delorphan from OST integration"); | |
473 | /* Don't resend the delorphan req */ | |
04a6284f NC |
474 | req->rq_no_resend = 1; |
475 | req->rq_no_delay = 1; | |
d7e09d03 PT |
476 | } |
477 | ||
478 | rc = ptlrpc_queue_wait(req); | |
479 | if (rc) | |
26c4ea46 | 480 | goto out_req; |
d7e09d03 PT |
481 | |
482 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
7f1ae4c0 | 483 | if (!body) { |
26c4ea46 TJ |
484 | rc = -EPROTO; |
485 | goto out_req; | |
486 | } | |
d7e09d03 | 487 | |
3b2f75fd | 488 | CDEBUG(D_INFO, "oa flags %x\n", oa->o_flags); |
489 | lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oa, &body->oa); | |
d7e09d03 PT |
490 | |
491 | oa->o_blksize = cli_brw_size(exp->exp_obd); | |
492 | oa->o_valid |= OBD_MD_FLBLKSZ; | |
493 | ||
494 | /* XXX LOV STACKING: the lsm that is passed to us from LOV does not | |
495 | * have valid lsm_oinfo data structs, so don't go touching that. | |
496 | * This needs to be fixed in a big way. | |
497 | */ | |
498 | lsm->lsm_oi = oa->o_oi; | |
499 | *ea = lsm; | |
500 | ||
58c78cd2 JH |
501 | if (oti && oa->o_valid & OBD_MD_FLCOOKIE) { |
502 | if (!oti->oti_logcookies) | |
503 | oti->oti_logcookies = &oti->oti_onecookie; | |
504 | *oti->oti_logcookies = oa->o_lcookie; | |
d7e09d03 PT |
505 | } |
506 | ||
f537dd2c | 507 | CDEBUG(D_HA, "transno: %lld\n", |
d7e09d03 PT |
508 | lustre_msg_get_transno(req->rq_repmsg)); |
509 | out_req: | |
510 | ptlrpc_req_finished(req); | |
511 | out: | |
512 | if (rc && !*ea) | |
513 | obd_free_memmd(exp, &lsm); | |
0a3bdb00 | 514 | return rc; |
d7e09d03 PT |
515 | } |
516 | ||
517 | int osc_punch_base(struct obd_export *exp, struct obd_info *oinfo, | |
518 | obd_enqueue_update_f upcall, void *cookie, | |
519 | struct ptlrpc_request_set *rqset) | |
520 | { | |
29ac6840 | 521 | struct ptlrpc_request *req; |
d7e09d03 | 522 | struct osc_setattr_args *sa; |
29ac6840 CH |
523 | struct ost_body *body; |
524 | int rc; | |
d7e09d03 PT |
525 | |
526 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_PUNCH); | |
7f1ae4c0 | 527 | if (!req) |
0a3bdb00 | 528 | return -ENOMEM; |
d7e09d03 | 529 | |
d7e09d03 PT |
530 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_PUNCH); |
531 | if (rc) { | |
532 | ptlrpc_request_free(req); | |
0a3bdb00 | 533 | return rc; |
d7e09d03 PT |
534 | } |
535 | req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */ | |
536 | ptlrpc_at_set_req_timeout(req); | |
537 | ||
538 | body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); | |
539 | LASSERT(body); | |
3b2f75fd | 540 | lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, |
541 | oinfo->oi_oa); | |
d7e09d03 PT |
542 | |
543 | ptlrpc_request_set_replen(req); | |
544 | ||
545 | req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_setattr_interpret; | |
e72f36e2 | 546 | CLASSERT(sizeof(*sa) <= sizeof(req->rq_async_args)); |
d7e09d03 | 547 | sa = ptlrpc_req_async_args(req); |
29ac6840 | 548 | sa->sa_oa = oinfo->oi_oa; |
d7e09d03 PT |
549 | sa->sa_upcall = upcall; |
550 | sa->sa_cookie = cookie; | |
551 | if (rqset == PTLRPCD_SET) | |
c5c4c6fa | 552 | ptlrpcd_add_req(req); |
d7e09d03 PT |
553 | else |
554 | ptlrpc_set_add_req(rqset, req); | |
555 | ||
0a3bdb00 | 556 | return 0; |
d7e09d03 PT |
557 | } |
558 | ||
d7e09d03 PT |
559 | static int osc_sync_interpret(const struct lu_env *env, |
560 | struct ptlrpc_request *req, | |
561 | void *arg, int rc) | |
562 | { | |
563 | struct osc_fsync_args *fa = arg; | |
564 | struct ost_body *body; | |
d7e09d03 PT |
565 | |
566 | if (rc) | |
26c4ea46 | 567 | goto out; |
d7e09d03 PT |
568 | |
569 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
7f1ae4c0 | 570 | if (!body) { |
e72f36e2 | 571 | CERROR("can't unpack ost_body\n"); |
26c4ea46 TJ |
572 | rc = -EPROTO; |
573 | goto out; | |
d7e09d03 PT |
574 | } |
575 | ||
576 | *fa->fa_oi->oi_oa = body->oa; | |
577 | out: | |
578 | rc = fa->fa_upcall(fa->fa_cookie, rc); | |
0a3bdb00 | 579 | return rc; |
d7e09d03 PT |
580 | } |
581 | ||
582 | int osc_sync_base(struct obd_export *exp, struct obd_info *oinfo, | |
583 | obd_enqueue_update_f upcall, void *cookie, | |
584 | struct ptlrpc_request_set *rqset) | |
585 | { | |
586 | struct ptlrpc_request *req; | |
29ac6840 | 587 | struct ost_body *body; |
d7e09d03 | 588 | struct osc_fsync_args *fa; |
29ac6840 | 589 | int rc; |
d7e09d03 PT |
590 | |
591 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SYNC); | |
7f1ae4c0 | 592 | if (!req) |
0a3bdb00 | 593 | return -ENOMEM; |
d7e09d03 | 594 | |
d7e09d03 PT |
595 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SYNC); |
596 | if (rc) { | |
597 | ptlrpc_request_free(req); | |
0a3bdb00 | 598 | return rc; |
d7e09d03 PT |
599 | } |
600 | ||
601 | /* overload the size and blocks fields in the oa with start/end */ | |
602 | body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); | |
603 | LASSERT(body); | |
3b2f75fd | 604 | lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, |
605 | oinfo->oi_oa); | |
d7e09d03 PT |
606 | |
607 | ptlrpc_request_set_replen(req); | |
608 | req->rq_interpret_reply = osc_sync_interpret; | |
609 | ||
610 | CLASSERT(sizeof(*fa) <= sizeof(req->rq_async_args)); | |
611 | fa = ptlrpc_req_async_args(req); | |
612 | fa->fa_oi = oinfo; | |
613 | fa->fa_upcall = upcall; | |
614 | fa->fa_cookie = cookie; | |
615 | ||
616 | if (rqset == PTLRPCD_SET) | |
c5c4c6fa | 617 | ptlrpcd_add_req(req); |
d7e09d03 PT |
618 | else |
619 | ptlrpc_set_add_req(rqset, req); | |
620 | ||
0a3bdb00 | 621 | return 0; |
d7e09d03 PT |
622 | } |
623 | ||
d7e09d03 PT |
624 | /* Find and cancel locally locks matched by @mode in the resource found by |
625 | * @objid. Found locks are added into @cancel list. Returns the amount of | |
30aa9c52 OD |
626 | * locks added to @cancels list. |
627 | */ | |
d7e09d03 PT |
628 | static int osc_resource_get_unused(struct obd_export *exp, struct obdo *oa, |
629 | struct list_head *cancels, | |
52ee0d20 | 630 | enum ldlm_mode mode, __u64 lock_flags) |
d7e09d03 PT |
631 | { |
632 | struct ldlm_namespace *ns = exp->exp_obd->obd_namespace; | |
633 | struct ldlm_res_id res_id; | |
634 | struct ldlm_resource *res; | |
635 | int count; | |
d7e09d03 PT |
636 | |
637 | /* Return, i.e. cancel nothing, only if ELC is supported (flag in | |
638 | * export) but disabled through procfs (flag in NS). | |
639 | * | |
640 | * This distinguishes from a case when ELC is not supported originally, | |
641 | * when we still want to cancel locks in advance and just cancel them | |
30aa9c52 OD |
642 | * locally, without sending any RPC. |
643 | */ | |
d7e09d03 | 644 | if (exp_connect_cancelset(exp) && !ns_connect_cancelset(ns)) |
0a3bdb00 | 645 | return 0; |
d7e09d03 PT |
646 | |
647 | ostid_build_res_name(&oa->o_oi, &res_id); | |
648 | res = ldlm_resource_get(ns, NULL, &res_id, 0, 0); | |
099d5adf | 649 | if (IS_ERR(res)) |
0a3bdb00 | 650 | return 0; |
d7e09d03 PT |
651 | |
652 | LDLM_RESOURCE_ADDREF(res); | |
653 | count = ldlm_cancel_resource_local(res, cancels, NULL, mode, | |
654 | lock_flags, 0, NULL); | |
655 | LDLM_RESOURCE_DELREF(res); | |
656 | ldlm_resource_putref(res); | |
0a3bdb00 | 657 | return count; |
d7e09d03 PT |
658 | } |
659 | ||
660 | static int osc_destroy_interpret(const struct lu_env *env, | |
661 | struct ptlrpc_request *req, void *data, | |
662 | int rc) | |
663 | { | |
664 | struct client_obd *cli = &req->rq_import->imp_obd->u.cli; | |
665 | ||
666 | atomic_dec(&cli->cl_destroy_in_flight); | |
667 | wake_up(&cli->cl_destroy_waitq); | |
668 | return 0; | |
669 | } | |
670 | ||
671 | static int osc_can_send_destroy(struct client_obd *cli) | |
672 | { | |
673 | if (atomic_inc_return(&cli->cl_destroy_in_flight) <= | |
674 | cli->cl_max_rpcs_in_flight) { | |
675 | /* The destroy request can be sent */ | |
676 | return 1; | |
677 | } | |
678 | if (atomic_dec_return(&cli->cl_destroy_in_flight) < | |
679 | cli->cl_max_rpcs_in_flight) { | |
680 | /* | |
681 | * The counter has been modified between the two atomic | |
682 | * operations. | |
683 | */ | |
684 | wake_up(&cli->cl_destroy_waitq); | |
685 | } | |
686 | return 0; | |
687 | } | |
688 | ||
74d4ec11 SB |
689 | static int osc_create(const struct lu_env *env, struct obd_export *exp, |
690 | struct obdo *oa, struct lov_stripe_md **ea, | |
691 | struct obd_trans_info *oti) | |
d7e09d03 PT |
692 | { |
693 | int rc = 0; | |
d7e09d03 PT |
694 | |
695 | LASSERT(oa); | |
696 | LASSERT(ea); | |
697 | LASSERT(oa->o_valid & OBD_MD_FLGROUP); | |
698 | ||
699 | if ((oa->o_valid & OBD_MD_FLFLAGS) && | |
700 | oa->o_flags == OBD_FL_RECREATE_OBJS) { | |
0a3bdb00 | 701 | return osc_real_create(exp, oa, ea, oti); |
d7e09d03 PT |
702 | } |
703 | ||
704 | if (!fid_seq_is_mdt(ostid_seq(&oa->o_oi))) | |
0a3bdb00 | 705 | return osc_real_create(exp, oa, ea, oti); |
d7e09d03 PT |
706 | |
707 | /* we should not get here anymore */ | |
708 | LBUG(); | |
709 | ||
0a3bdb00 | 710 | return rc; |
d7e09d03 PT |
711 | } |
712 | ||
713 | /* Destroy requests can be async always on the client, and we don't even really | |
714 | * care about the return code since the client cannot do anything at all about | |
715 | * a destroy failure. | |
716 | * When the MDS is unlinking a filename, it saves the file objects into a | |
717 | * recovery llog, and these object records are cancelled when the OST reports | |
718 | * they were destroyed and sync'd to disk (i.e. transaction committed). | |
719 | * If the client dies, or the OST is down when the object should be destroyed, | |
720 | * the records are not cancelled, and when the OST reconnects to the MDS next, | |
721 | * it will retrieve the llog unlink logs and then sends the log cancellation | |
30aa9c52 OD |
722 | * cookies to the MDS after committing destroy transactions. |
723 | */ | |
d7e09d03 PT |
724 | static int osc_destroy(const struct lu_env *env, struct obd_export *exp, |
725 | struct obdo *oa, struct lov_stripe_md *ea, | |
ef2e0f55 | 726 | struct obd_trans_info *oti, struct obd_export *md_export) |
d7e09d03 | 727 | { |
29ac6840 | 728 | struct client_obd *cli = &exp->exp_obd->u.cli; |
d7e09d03 | 729 | struct ptlrpc_request *req; |
29ac6840 | 730 | struct ost_body *body; |
d7e09d03 PT |
731 | LIST_HEAD(cancels); |
732 | int rc, count; | |
d7e09d03 PT |
733 | |
734 | if (!oa) { | |
735 | CDEBUG(D_INFO, "oa NULL\n"); | |
0a3bdb00 | 736 | return -EINVAL; |
d7e09d03 PT |
737 | } |
738 | ||
739 | count = osc_resource_get_unused(exp, oa, &cancels, LCK_PW, | |
740 | LDLM_FL_DISCARD_DATA); | |
741 | ||
742 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_DESTROY); | |
7f1ae4c0 | 743 | if (!req) { |
d7e09d03 | 744 | ldlm_lock_list_put(&cancels, l_bl_ast, count); |
0a3bdb00 | 745 | return -ENOMEM; |
d7e09d03 PT |
746 | } |
747 | ||
d7e09d03 PT |
748 | rc = ldlm_prep_elc_req(exp, req, LUSTRE_OST_VERSION, OST_DESTROY, |
749 | 0, &cancels, count); | |
750 | if (rc) { | |
751 | ptlrpc_request_free(req); | |
0a3bdb00 | 752 | return rc; |
d7e09d03 PT |
753 | } |
754 | ||
755 | req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */ | |
756 | ptlrpc_at_set_req_timeout(req); | |
757 | ||
7f1ae4c0 | 758 | if (oti && oa->o_valid & OBD_MD_FLCOOKIE) |
d7e09d03 PT |
759 | oa->o_lcookie = *oti->oti_logcookies; |
760 | body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); | |
761 | LASSERT(body); | |
3b2f75fd | 762 | lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa); |
d7e09d03 | 763 | |
d7e09d03 PT |
764 | ptlrpc_request_set_replen(req); |
765 | ||
11d66e89 | 766 | /* If osc_destroy is for destroying the unlink orphan, |
d7e09d03 PT |
767 | * sent from MDT to OST, which should not be blocked here, |
768 | * because the process might be triggered by ptlrpcd, and | |
30aa9c52 OD |
769 | * it is not good to block ptlrpcd thread (b=16006 |
770 | **/ | |
d7e09d03 PT |
771 | if (!(oa->o_flags & OBD_FL_DELORPHAN)) { |
772 | req->rq_interpret_reply = osc_destroy_interpret; | |
773 | if (!osc_can_send_destroy(cli)) { | |
774 | struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, | |
775 | NULL); | |
776 | ||
777 | /* | |
778 | * Wait until the number of on-going destroy RPCs drops | |
779 | * under max_rpc_in_flight | |
780 | */ | |
781 | l_wait_event_exclusive(cli->cl_destroy_waitq, | |
782 | osc_can_send_destroy(cli), &lwi); | |
783 | } | |
784 | } | |
785 | ||
786 | /* Do not wait for response */ | |
c5c4c6fa | 787 | ptlrpcd_add_req(req); |
0a3bdb00 | 788 | return 0; |
d7e09d03 PT |
789 | } |
790 | ||
791 | static void osc_announce_cached(struct client_obd *cli, struct obdo *oa, | |
792 | long writing_bytes) | |
793 | { | |
cd94f231 | 794 | u32 bits = OBD_MD_FLBLOCKS | OBD_MD_FLGRANT; |
d7e09d03 PT |
795 | |
796 | LASSERT(!(oa->o_valid & bits)); | |
797 | ||
798 | oa->o_valid |= bits; | |
7d53d8f4 | 799 | spin_lock(&cli->cl_loi_list_lock); |
3147b268 HZ |
800 | oa->o_dirty = cli->cl_dirty_pages << PAGE_SHIFT; |
801 | if (unlikely(cli->cl_dirty_pages - cli->cl_dirty_transit > | |
802 | cli->cl_dirty_max_pages)) { | |
d7e09d03 | 803 | CERROR("dirty %lu - %lu > dirty_max %lu\n", |
3147b268 HZ |
804 | cli->cl_dirty_pages, cli->cl_dirty_transit, |
805 | cli->cl_dirty_max_pages); | |
d7e09d03 | 806 | oa->o_undirty = 0; |
d806f30e | 807 | } else if (unlikely(atomic_read(&obd_dirty_pages) - |
d7e09d03 PT |
808 | atomic_read(&obd_dirty_transit_pages) > |
809 | (long)(obd_max_dirty_pages + 1))) { | |
810 | /* The atomic_read() allowing the atomic_inc() are | |
811 | * not covered by a lock thus they may safely race and trip | |
30aa9c52 OD |
812 | * this CERROR() unless we add in a small fudge factor (+1). |
813 | */ | |
d806f30e | 814 | CERROR("%s: dirty %d + %d > system dirty_max %d\n", |
ac5b1481 | 815 | cli->cl_import->imp_obd->obd_name, |
d7e09d03 PT |
816 | atomic_read(&obd_dirty_pages), |
817 | atomic_read(&obd_dirty_transit_pages), | |
818 | obd_max_dirty_pages); | |
819 | oa->o_undirty = 0; | |
3147b268 HZ |
820 | } else if (unlikely(cli->cl_dirty_max_pages - cli->cl_dirty_pages > |
821 | 0x7fffffff)) { | |
d7e09d03 | 822 | CERROR("dirty %lu - dirty_max %lu too big???\n", |
3147b268 | 823 | cli->cl_dirty_pages, cli->cl_dirty_max_pages); |
d7e09d03 PT |
824 | oa->o_undirty = 0; |
825 | } else { | |
826 | long max_in_flight = (cli->cl_max_pages_per_rpc << | |
cd94f231 | 827 | PAGE_SHIFT) * |
d7e09d03 | 828 | (cli->cl_max_rpcs_in_flight + 1); |
3147b268 HZ |
829 | oa->o_undirty = max(cli->cl_dirty_max_pages << PAGE_SHIFT, |
830 | max_in_flight); | |
d7e09d03 PT |
831 | } |
832 | oa->o_grant = cli->cl_avail_grant + cli->cl_reserved_grant; | |
833 | oa->o_dropped = cli->cl_lost_grant; | |
834 | cli->cl_lost_grant = 0; | |
7d53d8f4 | 835 | spin_unlock(&cli->cl_loi_list_lock); |
1d8cb70c | 836 | CDEBUG(D_CACHE, "dirty: %llu undirty: %u dropped %u grant: %llu\n", |
d7e09d03 | 837 | oa->o_dirty, oa->o_undirty, oa->o_dropped, oa->o_grant); |
d7e09d03 PT |
838 | } |
839 | ||
840 | void osc_update_next_shrink(struct client_obd *cli) | |
841 | { | |
842 | cli->cl_next_shrink_grant = | |
843 | cfs_time_shift(cli->cl_grant_shrink_interval); | |
72a87fca | 844 | CDEBUG(D_CACHE, "next time %ld to shrink grant\n", |
d7e09d03 PT |
845 | cli->cl_next_shrink_grant); |
846 | } | |
847 | ||
21aef7d9 | 848 | static void __osc_update_grant(struct client_obd *cli, u64 grant) |
d7e09d03 | 849 | { |
7d53d8f4 | 850 | spin_lock(&cli->cl_loi_list_lock); |
d7e09d03 | 851 | cli->cl_avail_grant += grant; |
7d53d8f4 | 852 | spin_unlock(&cli->cl_loi_list_lock); |
d7e09d03 PT |
853 | } |
854 | ||
855 | static void osc_update_grant(struct client_obd *cli, struct ost_body *body) | |
856 | { | |
857 | if (body->oa.o_valid & OBD_MD_FLGRANT) { | |
b0f5aad5 | 858 | CDEBUG(D_CACHE, "got %llu extra grant\n", body->oa.o_grant); |
d7e09d03 PT |
859 | __osc_update_grant(cli, body->oa.o_grant); |
860 | } | |
861 | } | |
862 | ||
863 | static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp, | |
21aef7d9 | 864 | u32 keylen, void *key, u32 vallen, |
d7e09d03 PT |
865 | void *val, struct ptlrpc_request_set *set); |
866 | ||
867 | static int osc_shrink_grant_interpret(const struct lu_env *env, | |
868 | struct ptlrpc_request *req, | |
869 | void *aa, int rc) | |
870 | { | |
871 | struct client_obd *cli = &req->rq_import->imp_obd->u.cli; | |
f024bad4 | 872 | struct obdo *oa = ((struct osc_brw_async_args *)aa)->aa_oa; |
d7e09d03 PT |
873 | struct ost_body *body; |
874 | ||
875 | if (rc != 0) { | |
876 | __osc_update_grant(cli, oa->o_grant); | |
26c4ea46 | 877 | goto out; |
d7e09d03 PT |
878 | } |
879 | ||
880 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
881 | LASSERT(body); | |
882 | osc_update_grant(cli, body); | |
883 | out: | |
2ba262fb | 884 | kmem_cache_free(obdo_cachep, oa); |
d7e09d03 PT |
885 | return rc; |
886 | } | |
887 | ||
888 | static void osc_shrink_grant_local(struct client_obd *cli, struct obdo *oa) | |
889 | { | |
7d53d8f4 | 890 | spin_lock(&cli->cl_loi_list_lock); |
d7e09d03 PT |
891 | oa->o_grant = cli->cl_avail_grant / 4; |
892 | cli->cl_avail_grant -= oa->o_grant; | |
7d53d8f4 | 893 | spin_unlock(&cli->cl_loi_list_lock); |
d7e09d03 PT |
894 | if (!(oa->o_valid & OBD_MD_FLFLAGS)) { |
895 | oa->o_valid |= OBD_MD_FLFLAGS; | |
896 | oa->o_flags = 0; | |
897 | } | |
898 | oa->o_flags |= OBD_FL_SHRINK_GRANT; | |
899 | osc_update_next_shrink(cli); | |
900 | } | |
901 | ||
902 | /* Shrink the current grant, either from some large amount to enough for a | |
903 | * full set of in-flight RPCs, or if we have already shrunk to that limit | |
904 | * then to enough for a single RPC. This avoids keeping more grant than | |
30aa9c52 OD |
905 | * needed, and avoids shrinking the grant piecemeal. |
906 | */ | |
d7e09d03 PT |
907 | static int osc_shrink_grant(struct client_obd *cli) |
908 | { | |
909 | __u64 target_bytes = (cli->cl_max_rpcs_in_flight + 1) * | |
09cbfeaf | 910 | (cli->cl_max_pages_per_rpc << PAGE_SHIFT); |
d7e09d03 | 911 | |
7d53d8f4 | 912 | spin_lock(&cli->cl_loi_list_lock); |
d7e09d03 | 913 | if (cli->cl_avail_grant <= target_bytes) |
09cbfeaf | 914 | target_bytes = cli->cl_max_pages_per_rpc << PAGE_SHIFT; |
7d53d8f4 | 915 | spin_unlock(&cli->cl_loi_list_lock); |
d7e09d03 PT |
916 | |
917 | return osc_shrink_grant_to_target(cli, target_bytes); | |
918 | } | |
919 | ||
920 | int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes) | |
921 | { | |
29ac6840 | 922 | int rc = 0; |
d7e09d03 | 923 | struct ost_body *body; |
d7e09d03 | 924 | |
7d53d8f4 | 925 | spin_lock(&cli->cl_loi_list_lock); |
d7e09d03 PT |
926 | /* Don't shrink if we are already above or below the desired limit |
927 | * We don't want to shrink below a single RPC, as that will negatively | |
30aa9c52 OD |
928 | * impact block allocation and long-term performance. |
929 | */ | |
09cbfeaf KS |
930 | if (target_bytes < cli->cl_max_pages_per_rpc << PAGE_SHIFT) |
931 | target_bytes = cli->cl_max_pages_per_rpc << PAGE_SHIFT; | |
d7e09d03 PT |
932 | |
933 | if (target_bytes >= cli->cl_avail_grant) { | |
7d53d8f4 | 934 | spin_unlock(&cli->cl_loi_list_lock); |
0a3bdb00 | 935 | return 0; |
d7e09d03 | 936 | } |
7d53d8f4 | 937 | spin_unlock(&cli->cl_loi_list_lock); |
d7e09d03 | 938 | |
7795178d | 939 | body = kzalloc(sizeof(*body), GFP_NOFS); |
d7e09d03 | 940 | if (!body) |
0a3bdb00 | 941 | return -ENOMEM; |
d7e09d03 PT |
942 | |
943 | osc_announce_cached(cli, &body->oa, 0); | |
944 | ||
7d53d8f4 | 945 | spin_lock(&cli->cl_loi_list_lock); |
d7e09d03 PT |
946 | body->oa.o_grant = cli->cl_avail_grant - target_bytes; |
947 | cli->cl_avail_grant = target_bytes; | |
7d53d8f4 | 948 | spin_unlock(&cli->cl_loi_list_lock); |
d7e09d03 PT |
949 | if (!(body->oa.o_valid & OBD_MD_FLFLAGS)) { |
950 | body->oa.o_valid |= OBD_MD_FLFLAGS; | |
951 | body->oa.o_flags = 0; | |
952 | } | |
953 | body->oa.o_flags |= OBD_FL_SHRINK_GRANT; | |
954 | osc_update_next_shrink(cli); | |
955 | ||
956 | rc = osc_set_info_async(NULL, cli->cl_import->imp_obd->obd_self_export, | |
957 | sizeof(KEY_GRANT_SHRINK), KEY_GRANT_SHRINK, | |
958 | sizeof(*body), body, NULL); | |
959 | if (rc != 0) | |
960 | __osc_update_grant(cli, body->oa.o_grant); | |
7795178d | 961 | kfree(body); |
0a3bdb00 | 962 | return rc; |
d7e09d03 PT |
963 | } |
964 | ||
965 | static int osc_should_shrink_grant(struct client_obd *client) | |
966 | { | |
a649ad1d GKH |
967 | unsigned long time = cfs_time_current(); |
968 | unsigned long next_shrink = client->cl_next_shrink_grant; | |
d7e09d03 PT |
969 | |
970 | if ((client->cl_import->imp_connect_data.ocd_connect_flags & | |
971 | OBD_CONNECT_GRANT_SHRINK) == 0) | |
972 | return 0; | |
973 | ||
974 | if (cfs_time_aftereq(time, next_shrink - 5 * CFS_TICK)) { | |
975 | /* Get the current RPC size directly, instead of going via: | |
976 | * cli_brw_size(obd->u.cli.cl_import->imp_obd->obd_self_export) | |
30aa9c52 OD |
977 | * Keep comment here so that it can be found by searching. |
978 | */ | |
09cbfeaf | 979 | int brw_size = client->cl_max_pages_per_rpc << PAGE_SHIFT; |
d7e09d03 PT |
980 | |
981 | if (client->cl_import->imp_state == LUSTRE_IMP_FULL && | |
982 | client->cl_avail_grant > brw_size) | |
983 | return 1; | |
71e8dd9a AM |
984 | |
985 | osc_update_next_shrink(client); | |
d7e09d03 PT |
986 | } |
987 | return 0; | |
988 | } | |
989 | ||
990 | static int osc_grant_shrink_grant_cb(struct timeout_item *item, void *data) | |
991 | { | |
992 | struct client_obd *client; | |
993 | ||
79910d7d | 994 | list_for_each_entry(client, &item->ti_obd_list, cl_grant_shrink_list) { |
d7e09d03 PT |
995 | if (osc_should_shrink_grant(client)) |
996 | osc_shrink_grant(client); | |
997 | } | |
998 | return 0; | |
999 | } | |
1000 | ||
1001 | static int osc_add_shrink_grant(struct client_obd *client) | |
1002 | { | |
1003 | int rc; | |
1004 | ||
1005 | rc = ptlrpc_add_timeout_client(client->cl_grant_shrink_interval, | |
1006 | TIMEOUT_GRANT, | |
1007 | osc_grant_shrink_grant_cb, NULL, | |
1008 | &client->cl_grant_shrink_list); | |
1009 | if (rc) { | |
1010 | CERROR("add grant client %s error %d\n", | |
79910d7d | 1011 | client->cl_import->imp_obd->obd_name, rc); |
d7e09d03 PT |
1012 | return rc; |
1013 | } | |
72a87fca | 1014 | CDEBUG(D_CACHE, "add grant client %s\n", |
d7e09d03 PT |
1015 | client->cl_import->imp_obd->obd_name); |
1016 | osc_update_next_shrink(client); | |
1017 | return 0; | |
1018 | } | |
1019 | ||
1020 | static int osc_del_shrink_grant(struct client_obd *client) | |
1021 | { | |
1022 | return ptlrpc_del_timeout_client(&client->cl_grant_shrink_list, | |
1023 | TIMEOUT_GRANT); | |
1024 | } | |
1025 | ||
1026 | static void osc_init_grant(struct client_obd *cli, struct obd_connect_data *ocd) | |
1027 | { | |
1028 | /* | |
1029 | * ocd_grant is the total grant amount we're expect to hold: if we've | |
3147b268 HZ |
1030 | * been evicted, it's the new avail_grant amount, cl_dirty_pages will |
1031 | * drop to 0 as inflight RPCs fail out; otherwise, it's avail_grant + | |
1032 | * dirty. | |
d7e09d03 PT |
1033 | * |
1034 | * race is tolerable here: if we're evicted, but imp_state already | |
3147b268 | 1035 | * left EVICTED state, then cl_dirty_pages must be 0 already. |
d7e09d03 | 1036 | */ |
7d53d8f4 | 1037 | spin_lock(&cli->cl_loi_list_lock); |
d7e09d03 PT |
1038 | if (cli->cl_import->imp_state == LUSTRE_IMP_EVICTED) |
1039 | cli->cl_avail_grant = ocd->ocd_grant; | |
1040 | else | |
3147b268 HZ |
1041 | cli->cl_avail_grant = ocd->ocd_grant - |
1042 | (cli->cl_dirty_pages << PAGE_SHIFT); | |
d7e09d03 PT |
1043 | |
1044 | if (cli->cl_avail_grant < 0) { | |
1045 | CWARN("%s: available grant < 0: avail/ocd/dirty %ld/%u/%ld\n", | |
1046 | cli->cl_import->imp_obd->obd_name, cli->cl_avail_grant, | |
3147b268 | 1047 | ocd->ocd_grant, cli->cl_dirty_pages << PAGE_SHIFT); |
d7e09d03 | 1048 | /* workaround for servers which do not have the patch from |
30aa9c52 OD |
1049 | * LU-2679 |
1050 | */ | |
d7e09d03 PT |
1051 | cli->cl_avail_grant = ocd->ocd_grant; |
1052 | } | |
1053 | ||
1054 | /* determine the appropriate chunk size used by osc_extent. */ | |
09cbfeaf | 1055 | cli->cl_chunkbits = max_t(int, PAGE_SHIFT, ocd->ocd_blocksize); |
7d53d8f4 | 1056 | spin_unlock(&cli->cl_loi_list_lock); |
d7e09d03 | 1057 | |
2d00bd17 JP |
1058 | CDEBUG(D_CACHE, "%s, setting cl_avail_grant: %ld cl_lost_grant: %ld chunk bits: %d\n", |
1059 | cli->cl_import->imp_obd->obd_name, | |
1060 | cli->cl_avail_grant, cli->cl_lost_grant, cli->cl_chunkbits); | |
d7e09d03 PT |
1061 | |
1062 | if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT_SHRINK && | |
1063 | list_empty(&cli->cl_grant_shrink_list)) | |
1064 | osc_add_shrink_grant(cli); | |
1065 | } | |
1066 | ||
1067 | /* We assume that the reason this OSC got a short read is because it read | |
1068 | * beyond the end of a stripe file; i.e. lustre is reading a sparse file | |
1069 | * via the LOV, and it _knows_ it's reading inside the file, it's just that | |
30aa9c52 OD |
1070 | * this stripe never got written at or beyond this stripe offset yet. |
1071 | */ | |
21aef7d9 | 1072 | static void handle_short_read(int nob_read, u32 page_count, |
d7e09d03 PT |
1073 | struct brw_page **pga) |
1074 | { | |
1075 | char *ptr; | |
1076 | int i = 0; | |
1077 | ||
1078 | /* skip bytes read OK */ | |
1079 | while (nob_read > 0) { | |
e72f36e2 | 1080 | LASSERT(page_count > 0); |
d7e09d03 PT |
1081 | |
1082 | if (pga[i]->count > nob_read) { | |
1083 | /* EOF inside this page */ | |
1084 | ptr = kmap(pga[i]->pg) + | |
616387e8 | 1085 | (pga[i]->off & ~PAGE_MASK); |
d7e09d03 PT |
1086 | memset(ptr + nob_read, 0, pga[i]->count - nob_read); |
1087 | kunmap(pga[i]->pg); | |
1088 | page_count--; | |
1089 | i++; | |
1090 | break; | |
1091 | } | |
1092 | ||
1093 | nob_read -= pga[i]->count; | |
1094 | page_count--; | |
1095 | i++; | |
1096 | } | |
1097 | ||
1098 | /* zero remaining pages */ | |
1099 | while (page_count-- > 0) { | |
616387e8 | 1100 | ptr = kmap(pga[i]->pg) + (pga[i]->off & ~PAGE_MASK); |
d7e09d03 PT |
1101 | memset(ptr, 0, pga[i]->count); |
1102 | kunmap(pga[i]->pg); | |
1103 | i++; | |
1104 | } | |
1105 | } | |
1106 | ||
1107 | static int check_write_rcs(struct ptlrpc_request *req, | |
1108 | int requested_nob, int niocount, | |
21aef7d9 | 1109 | u32 page_count, struct brw_page **pga) |
d7e09d03 | 1110 | { |
29ac6840 CH |
1111 | int i; |
1112 | __u32 *remote_rcs; | |
d7e09d03 PT |
1113 | |
1114 | remote_rcs = req_capsule_server_sized_get(&req->rq_pill, &RMF_RCS, | |
1115 | sizeof(*remote_rcs) * | |
1116 | niocount); | |
7f1ae4c0 | 1117 | if (!remote_rcs) { |
d7e09d03 | 1118 | CDEBUG(D_INFO, "Missing/short RC vector on BRW_WRITE reply\n"); |
fbe7c6c7 | 1119 | return -EPROTO; |
d7e09d03 PT |
1120 | } |
1121 | ||
1122 | /* return error if any niobuf was in error */ | |
1123 | for (i = 0; i < niocount; i++) { | |
1124 | if ((int)remote_rcs[i] < 0) | |
e8291974 | 1125 | return remote_rcs[i]; |
d7e09d03 PT |
1126 | |
1127 | if (remote_rcs[i] != 0) { | |
1128 | CDEBUG(D_INFO, "rc[%d] invalid (%d) req %p\n", | |
79910d7d | 1129 | i, remote_rcs[i], req); |
fbe7c6c7 | 1130 | return -EPROTO; |
d7e09d03 PT |
1131 | } |
1132 | } | |
1133 | ||
1134 | if (req->rq_bulk->bd_nob_transferred != requested_nob) { | |
1135 | CERROR("Unexpected # bytes transferred: %d (requested %d)\n", | |
1136 | req->rq_bulk->bd_nob_transferred, requested_nob); | |
fbe7c6c7 | 1137 | return -EPROTO; |
d7e09d03 PT |
1138 | } |
1139 | ||
fbe7c6c7 | 1140 | return 0; |
d7e09d03 PT |
1141 | } |
1142 | ||
1143 | static inline int can_merge_pages(struct brw_page *p1, struct brw_page *p2) | |
1144 | { | |
1145 | if (p1->flag != p2->flag) { | |
7cf1054b | 1146 | unsigned mask = ~(OBD_BRW_FROM_GRANT | OBD_BRW_NOCACHE | |
ad479287 PS |
1147 | OBD_BRW_SYNC | OBD_BRW_ASYNC | |
1148 | OBD_BRW_NOQUOTA | OBD_BRW_SOFT_SYNC); | |
d7e09d03 PT |
1149 | |
1150 | /* warn if we try to combine flags that we don't know to be | |
30aa9c52 OD |
1151 | * safe to combine |
1152 | */ | |
d7e09d03 | 1153 | if (unlikely((p1->flag & mask) != (p2->flag & mask))) { |
2d00bd17 | 1154 | CWARN("Saw flags 0x%x and 0x%x in the same brw, please report this at http://bugs.whamcloud.com/\n", |
d7e09d03 PT |
1155 | p1->flag, p2->flag); |
1156 | } | |
1157 | return 0; | |
1158 | } | |
1159 | ||
1160 | return (p1->off + p1->count == p2->off); | |
1161 | } | |
1162 | ||
21aef7d9 | 1163 | static u32 osc_checksum_bulk(int nob, u32 pg_count, |
29ac6840 | 1164 | struct brw_page **pga, int opc, |
d133210f | 1165 | enum cksum_type cksum_type) |
d7e09d03 | 1166 | { |
29ac6840 CH |
1167 | __u32 cksum; |
1168 | int i = 0; | |
1169 | struct cfs_crypto_hash_desc *hdesc; | |
1170 | unsigned int bufsize; | |
1171 | int err; | |
1172 | unsigned char cfs_alg = cksum_obd2cfs(cksum_type); | |
d7e09d03 PT |
1173 | |
1174 | LASSERT(pg_count > 0); | |
1175 | ||
1176 | hdesc = cfs_crypto_hash_init(cfs_alg, NULL, 0); | |
1177 | if (IS_ERR(hdesc)) { | |
1178 | CERROR("Unable to initialize checksum hash %s\n", | |
1179 | cfs_crypto_hash_name(cfs_alg)); | |
1180 | return PTR_ERR(hdesc); | |
1181 | } | |
1182 | ||
1183 | while (nob > 0 && pg_count > 0) { | |
1184 | int count = pga[i]->count > nob ? nob : pga[i]->count; | |
1185 | ||
1186 | /* corrupt the data before we compute the checksum, to | |
30aa9c52 OD |
1187 | * simulate an OST->client data error |
1188 | */ | |
d7e09d03 PT |
1189 | if (i == 0 && opc == OST_READ && |
1190 | OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_RECEIVE)) { | |
1191 | unsigned char *ptr = kmap(pga[i]->pg); | |
616387e8 | 1192 | int off = pga[i]->off & ~PAGE_MASK; |
50ffcb7e | 1193 | |
d7e09d03 PT |
1194 | memcpy(ptr + off, "bad1", min(4, nob)); |
1195 | kunmap(pga[i]->pg); | |
1196 | } | |
1197 | cfs_crypto_hash_update_page(hdesc, pga[i]->pg, | |
616387e8 | 1198 | pga[i]->off & ~PAGE_MASK, |
d7e09d03 | 1199 | count); |
aa3bee0d GKH |
1200 | CDEBUG(D_PAGE, |
1201 | "page %p map %p index %lu flags %lx count %u priv %0lx: off %d\n", | |
1202 | pga[i]->pg, pga[i]->pg->mapping, pga[i]->pg->index, | |
1203 | (long)pga[i]->pg->flags, page_count(pga[i]->pg), | |
1204 | page_private(pga[i]->pg), | |
616387e8 | 1205 | (int)(pga[i]->off & ~PAGE_MASK)); |
d7e09d03 PT |
1206 | |
1207 | nob -= pga[i]->count; | |
1208 | pg_count--; | |
1209 | i++; | |
1210 | } | |
1211 | ||
c11e27a4 | 1212 | bufsize = sizeof(cksum); |
d7e09d03 PT |
1213 | err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize); |
1214 | ||
d7e09d03 | 1215 | /* For sending we only compute the wrong checksum instead |
30aa9c52 OD |
1216 | * of corrupting the data so it is still correct on a redo |
1217 | */ | |
d7e09d03 PT |
1218 | if (opc == OST_WRITE && OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_SEND)) |
1219 | cksum++; | |
1220 | ||
1221 | return cksum; | |
1222 | } | |
1223 | ||
1d8cb70c GD |
1224 | static int osc_brw_prep_request(int cmd, struct client_obd *cli, |
1225 | struct obdo *oa, | |
21aef7d9 | 1226 | struct lov_stripe_md *lsm, u32 page_count, |
d7e09d03 PT |
1227 | struct brw_page **pga, |
1228 | struct ptlrpc_request **reqp, | |
ef2e0f55 | 1229 | int reserve, |
d7e09d03 PT |
1230 | int resend) |
1231 | { | |
29ac6840 | 1232 | struct ptlrpc_request *req; |
d7e09d03 | 1233 | struct ptlrpc_bulk_desc *desc; |
29ac6840 CH |
1234 | struct ost_body *body; |
1235 | struct obd_ioobj *ioobj; | |
1236 | struct niobuf_remote *niobuf; | |
d7e09d03 PT |
1237 | int niocount, i, requested_nob, opc, rc; |
1238 | struct osc_brw_async_args *aa; | |
29ac6840 | 1239 | struct req_capsule *pill; |
d7e09d03 PT |
1240 | struct brw_page *pg_prev; |
1241 | ||
d7e09d03 | 1242 | if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ)) |
0a3bdb00 | 1243 | return -ENOMEM; /* Recoverable */ |
d7e09d03 | 1244 | if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ2)) |
0a3bdb00 | 1245 | return -EINVAL; /* Fatal */ |
d7e09d03 PT |
1246 | |
1247 | if ((cmd & OBD_BRW_WRITE) != 0) { | |
1248 | opc = OST_WRITE; | |
1249 | req = ptlrpc_request_alloc_pool(cli->cl_import, | |
aefd9d71 | 1250 | osc_rq_pool, |
d7e09d03 PT |
1251 | &RQF_OST_BRW_WRITE); |
1252 | } else { | |
1253 | opc = OST_READ; | |
1254 | req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_BRW_READ); | |
1255 | } | |
7f1ae4c0 | 1256 | if (!req) |
0a3bdb00 | 1257 | return -ENOMEM; |
d7e09d03 PT |
1258 | |
1259 | for (niocount = i = 1; i < page_count; i++) { | |
1260 | if (!can_merge_pages(pga[i - 1], pga[i])) | |
1261 | niocount++; | |
1262 | } | |
1263 | ||
1264 | pill = &req->rq_pill; | |
1265 | req_capsule_set_size(pill, &RMF_OBD_IOOBJ, RCL_CLIENT, | |
1266 | sizeof(*ioobj)); | |
1267 | req_capsule_set_size(pill, &RMF_NIOBUF_REMOTE, RCL_CLIENT, | |
1268 | niocount * sizeof(*niobuf)); | |
d7e09d03 PT |
1269 | |
1270 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, opc); | |
1271 | if (rc) { | |
1272 | ptlrpc_request_free(req); | |
0a3bdb00 | 1273 | return rc; |
d7e09d03 PT |
1274 | } |
1275 | req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */ | |
1276 | ptlrpc_at_set_req_timeout(req); | |
1277 | /* ask ptlrpc not to resend on EINPROGRESS since BRWs have their own | |
30aa9c52 OD |
1278 | * retry logic |
1279 | */ | |
d7e09d03 PT |
1280 | req->rq_no_retry_einprogress = 1; |
1281 | ||
1282 | desc = ptlrpc_prep_bulk_imp(req, page_count, | |
1283 | cli->cl_import->imp_connect_data.ocd_brw_size >> LNET_MTU_BITS, | |
1284 | opc == OST_WRITE ? BULK_GET_SOURCE : BULK_PUT_SINK, | |
1285 | OST_BULK_PORTAL); | |
1286 | ||
7f1ae4c0 | 1287 | if (!desc) { |
26c4ea46 TJ |
1288 | rc = -ENOMEM; |
1289 | goto out; | |
1290 | } | |
d7e09d03 PT |
1291 | /* NB request now owns desc and will free it when it gets freed */ |
1292 | ||
1293 | body = req_capsule_client_get(pill, &RMF_OST_BODY); | |
1294 | ioobj = req_capsule_client_get(pill, &RMF_OBD_IOOBJ); | |
1295 | niobuf = req_capsule_client_get(pill, &RMF_NIOBUF_REMOTE); | |
7f1ae4c0 | 1296 | LASSERT(body && ioobj && niobuf); |
d7e09d03 | 1297 | |
3b2f75fd | 1298 | lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa); |
d7e09d03 PT |
1299 | |
1300 | obdo_to_ioobj(oa, ioobj); | |
1301 | ioobj->ioo_bufcnt = niocount; | |
1302 | /* The high bits of ioo_max_brw tells server _maximum_ number of bulks | |
1303 | * that might be send for this request. The actual number is decided | |
1304 | * when the RPC is finally sent in ptlrpc_register_bulk(). It sends | |
1305 | * "max - 1" for old client compatibility sending "0", and also so the | |
30aa9c52 OD |
1306 | * the actual maximum is a power-of-two number, not one less. LU-1431 |
1307 | */ | |
d7e09d03 | 1308 | ioobj_max_brw_set(ioobj, desc->bd_md_max_brw); |
d7e09d03 PT |
1309 | LASSERT(page_count > 0); |
1310 | pg_prev = pga[0]; | |
1311 | for (requested_nob = i = 0; i < page_count; i++, niobuf++) { | |
1312 | struct brw_page *pg = pga[i]; | |
616387e8 | 1313 | int poff = pg->off & ~PAGE_MASK; |
d7e09d03 PT |
1314 | |
1315 | LASSERT(pg->count > 0); | |
1316 | /* make sure there is no gap in the middle of page array */ | |
1317 | LASSERTF(page_count == 1 || | |
09cbfeaf | 1318 | (ergo(i == 0, poff + pg->count == PAGE_SIZE) && |
d7e09d03 | 1319 | ergo(i > 0 && i < page_count - 1, |
09cbfeaf | 1320 | poff == 0 && pg->count == PAGE_SIZE) && |
d7e09d03 | 1321 | ergo(i == page_count - 1, poff == 0)), |
b0f5aad5 | 1322 | "i: %d/%d pg: %p off: %llu, count: %u\n", |
d7e09d03 PT |
1323 | i, page_count, pg, pg->off, pg->count); |
1324 | LASSERTF(i == 0 || pg->off > pg_prev->off, | |
2d00bd17 | 1325 | "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 |
1326 | i, page_count, |
1327 | pg->pg, page_private(pg->pg), pg->pg->index, pg->off, | |
1328 | pg_prev->pg, page_private(pg_prev->pg), | |
1329 | pg_prev->pg->index, pg_prev->off); | |
1330 | LASSERT((pga[0]->flag & OBD_BRW_SRVLOCK) == | |
1331 | (pg->flag & OBD_BRW_SRVLOCK)); | |
1332 | ||
1333 | ptlrpc_prep_bulk_page_pin(desc, pg->pg, poff, pg->count); | |
1334 | requested_nob += pg->count; | |
1335 | ||
1336 | if (i > 0 && can_merge_pages(pg_prev, pg)) { | |
1337 | niobuf--; | |
1338 | niobuf->len += pg->count; | |
1339 | } else { | |
1340 | niobuf->offset = pg->off; | |
29ac6840 CH |
1341 | niobuf->len = pg->count; |
1342 | niobuf->flags = pg->flag; | |
d7e09d03 PT |
1343 | } |
1344 | pg_prev = pg; | |
1345 | } | |
1346 | ||
1347 | LASSERTF((void *)(niobuf - niocount) == | |
1348 | req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE), | |
1349 | "want %p - real %p\n", req_capsule_client_get(&req->rq_pill, | |
1350 | &RMF_NIOBUF_REMOTE), (void *)(niobuf - niocount)); | |
1351 | ||
1352 | osc_announce_cached(cli, &body->oa, opc == OST_WRITE ? requested_nob:0); | |
1353 | if (resend) { | |
1354 | if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) { | |
1355 | body->oa.o_valid |= OBD_MD_FLFLAGS; | |
1356 | body->oa.o_flags = 0; | |
1357 | } | |
1358 | body->oa.o_flags |= OBD_FL_RECOV_RESEND; | |
1359 | } | |
1360 | ||
1361 | if (osc_should_shrink_grant(cli)) | |
1362 | osc_shrink_grant_local(cli, &body->oa); | |
1363 | ||
1364 | /* size[REQ_REC_OFF] still sizeof (*body) */ | |
1365 | if (opc == OST_WRITE) { | |
1366 | if (cli->cl_checksum && | |
1367 | !sptlrpc_flavor_has_bulk(&req->rq_flvr)) { | |
1368 | /* store cl_cksum_type in a local variable since | |
30aa9c52 OD |
1369 | * it can be changed via lprocfs |
1370 | */ | |
d133210f | 1371 | enum cksum_type cksum_type = cli->cl_cksum_type; |
d7e09d03 PT |
1372 | |
1373 | if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) { | |
1374 | oa->o_flags &= OBD_FL_LOCAL_MASK; | |
1375 | body->oa.o_flags = 0; | |
1376 | } | |
1377 | body->oa.o_flags |= cksum_type_pack(cksum_type); | |
1378 | body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS; | |
1379 | body->oa.o_cksum = osc_checksum_bulk(requested_nob, | |
1380 | page_count, pga, | |
1381 | OST_WRITE, | |
1382 | cksum_type); | |
1383 | CDEBUG(D_PAGE, "checksum at write origin: %x\n", | |
1384 | body->oa.o_cksum); | |
1385 | /* save this in 'oa', too, for later checking */ | |
1386 | oa->o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS; | |
1387 | oa->o_flags |= cksum_type_pack(cksum_type); | |
1388 | } else { | |
1389 | /* clear out the checksum flag, in case this is a | |
30aa9c52 OD |
1390 | * resend but cl_checksum is no longer set. b=11238 |
1391 | */ | |
d7e09d03 PT |
1392 | oa->o_valid &= ~OBD_MD_FLCKSUM; |
1393 | } | |
1394 | oa->o_cksum = body->oa.o_cksum; | |
1395 | /* 1 RC per niobuf */ | |
1396 | req_capsule_set_size(pill, &RMF_RCS, RCL_SERVER, | |
1397 | sizeof(__u32) * niocount); | |
1398 | } else { | |
1399 | if (cli->cl_checksum && | |
1400 | !sptlrpc_flavor_has_bulk(&req->rq_flvr)) { | |
1401 | if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) | |
1402 | body->oa.o_flags = 0; | |
1403 | body->oa.o_flags |= cksum_type_pack(cli->cl_cksum_type); | |
1404 | body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS; | |
1405 | } | |
1406 | } | |
1407 | ptlrpc_request_set_replen(req); | |
1408 | ||
1409 | CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args)); | |
1410 | aa = ptlrpc_req_async_args(req); | |
1411 | aa->aa_oa = oa; | |
1412 | aa->aa_requested_nob = requested_nob; | |
1413 | aa->aa_nio_count = niocount; | |
1414 | aa->aa_page_count = page_count; | |
1415 | aa->aa_resends = 0; | |
1416 | aa->aa_ppga = pga; | |
1417 | aa->aa_cli = cli; | |
1418 | INIT_LIST_HEAD(&aa->aa_oaps); | |
d7e09d03 PT |
1419 | |
1420 | *reqp = req; | |
0a3bdb00 | 1421 | return 0; |
d7e09d03 PT |
1422 | |
1423 | out: | |
1424 | ptlrpc_req_finished(req); | |
0a3bdb00 | 1425 | return rc; |
d7e09d03 PT |
1426 | } |
1427 | ||
1428 | static int check_write_checksum(struct obdo *oa, const lnet_process_id_t *peer, | |
1429 | __u32 client_cksum, __u32 server_cksum, int nob, | |
21aef7d9 | 1430 | u32 page_count, struct brw_page **pga, |
d133210f | 1431 | enum cksum_type client_cksum_type) |
d7e09d03 PT |
1432 | { |
1433 | __u32 new_cksum; | |
1434 | char *msg; | |
d133210f | 1435 | enum cksum_type cksum_type; |
d7e09d03 PT |
1436 | |
1437 | if (server_cksum == client_cksum) { | |
1438 | CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum); | |
1439 | return 0; | |
1440 | } | |
1441 | ||
1442 | cksum_type = cksum_type_unpack(oa->o_valid & OBD_MD_FLFLAGS ? | |
1443 | oa->o_flags : 0); | |
1444 | new_cksum = osc_checksum_bulk(nob, page_count, pga, OST_WRITE, | |
1445 | cksum_type); | |
1446 | ||
1447 | if (cksum_type != client_cksum_type) | |
2d00bd17 JP |
1448 | msg = "the server did not use the checksum type specified in the original request - likely a protocol problem" |
1449 | ; | |
d7e09d03 | 1450 | else if (new_cksum == server_cksum) |
2d00bd17 JP |
1451 | msg = "changed on the client after we checksummed it - likely false positive due to mmap IO (bug 11742)" |
1452 | ; | |
d7e09d03 PT |
1453 | else if (new_cksum == client_cksum) |
1454 | msg = "changed in transit before arrival at OST"; | |
1455 | else | |
2d00bd17 JP |
1456 | msg = "changed in transit AND doesn't match the original - likely false positive due to mmap IO (bug 11742)" |
1457 | ; | |
d7e09d03 PT |
1458 | |
1459 | LCONSOLE_ERROR_MSG(0x132, "BAD WRITE CHECKSUM: %s: from %s inode "DFID | |
b0f5aad5 | 1460 | " object "DOSTID" extent [%llu-%llu]\n", |
d7e09d03 PT |
1461 | msg, libcfs_nid2str(peer->nid), |
1462 | oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : (__u64)0, | |
1463 | oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0, | |
1464 | oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0, | |
1465 | POSTID(&oa->o_oi), pga[0]->off, | |
cd94f231 OD |
1466 | pga[page_count - 1]->off + |
1467 | pga[page_count - 1]->count - 1); | |
2d00bd17 JP |
1468 | CERROR("original client csum %x (type %x), server csum %x (type %x), client csum now %x\n", |
1469 | client_cksum, client_cksum_type, | |
d7e09d03 PT |
1470 | server_cksum, cksum_type, new_cksum); |
1471 | return 1; | |
1472 | } | |
1473 | ||
1474 | /* Note rc enters this function as number of bytes transferred */ | |
1475 | static int osc_brw_fini_request(struct ptlrpc_request *req, int rc) | |
1476 | { | |
1477 | struct osc_brw_async_args *aa = (void *)&req->rq_async_args; | |
1478 | const lnet_process_id_t *peer = | |
1479 | &req->rq_import->imp_connection->c_peer; | |
1480 | struct client_obd *cli = aa->aa_cli; | |
1481 | struct ost_body *body; | |
1482 | __u32 client_cksum = 0; | |
d7e09d03 PT |
1483 | |
1484 | if (rc < 0 && rc != -EDQUOT) { | |
1485 | DEBUG_REQ(D_INFO, req, "Failed request with rc = %d\n", rc); | |
0a3bdb00 | 1486 | return rc; |
d7e09d03 PT |
1487 | } |
1488 | ||
7f1ae4c0 | 1489 | LASSERTF(req->rq_repmsg, "rc = %d\n", rc); |
d7e09d03 | 1490 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); |
7f1ae4c0 | 1491 | if (!body) { |
d7e09d03 | 1492 | DEBUG_REQ(D_INFO, req, "Can't unpack body\n"); |
0a3bdb00 | 1493 | return -EPROTO; |
d7e09d03 PT |
1494 | } |
1495 | ||
1496 | /* set/clear over quota flag for a uid/gid */ | |
1497 | if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE && | |
1498 | body->oa.o_valid & (OBD_MD_FLUSRQUOTA | OBD_MD_FLGRPQUOTA)) { | |
1499 | unsigned int qid[MAXQUOTAS] = { body->oa.o_uid, body->oa.o_gid }; | |
1500 | ||
55f5a824 | 1501 | CDEBUG(D_QUOTA, "setdq for [%u %u] with valid %#llx, flags %x\n", |
d7e09d03 PT |
1502 | body->oa.o_uid, body->oa.o_gid, body->oa.o_valid, |
1503 | body->oa.o_flags); | |
1504 | osc_quota_setdq(cli, qid, body->oa.o_valid, body->oa.o_flags); | |
1505 | } | |
1506 | ||
1507 | osc_update_grant(cli, body); | |
1508 | ||
1509 | if (rc < 0) | |
0a3bdb00 | 1510 | return rc; |
d7e09d03 PT |
1511 | |
1512 | if (aa->aa_oa->o_valid & OBD_MD_FLCKSUM) | |
1513 | client_cksum = aa->aa_oa->o_cksum; /* save for later */ | |
1514 | ||
1515 | if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) { | |
1516 | if (rc > 0) { | |
1517 | CERROR("Unexpected +ve rc %d\n", rc); | |
0a3bdb00 | 1518 | return -EPROTO; |
d7e09d03 PT |
1519 | } |
1520 | LASSERT(req->rq_bulk->bd_nob == aa->aa_requested_nob); | |
1521 | ||
1522 | if (sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk)) | |
0a3bdb00 | 1523 | return -EAGAIN; |
d7e09d03 PT |
1524 | |
1525 | if ((aa->aa_oa->o_valid & OBD_MD_FLCKSUM) && client_cksum && | |
1526 | check_write_checksum(&body->oa, peer, client_cksum, | |
1527 | body->oa.o_cksum, aa->aa_requested_nob, | |
1528 | aa->aa_page_count, aa->aa_ppga, | |
1529 | cksum_type_unpack(aa->aa_oa->o_flags))) | |
0a3bdb00 | 1530 | return -EAGAIN; |
d7e09d03 | 1531 | |
1d8cb70c GD |
1532 | rc = check_write_rcs(req, aa->aa_requested_nob, |
1533 | aa->aa_nio_count, | |
d7e09d03 | 1534 | aa->aa_page_count, aa->aa_ppga); |
26c4ea46 | 1535 | goto out; |
d7e09d03 PT |
1536 | } |
1537 | ||
1538 | /* The rest of this function executes only for OST_READs */ | |
1539 | ||
1540 | /* if unwrap_bulk failed, return -EAGAIN to retry */ | |
1541 | rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk, rc); | |
26c4ea46 TJ |
1542 | if (rc < 0) { |
1543 | rc = -EAGAIN; | |
1544 | goto out; | |
1545 | } | |
d7e09d03 PT |
1546 | |
1547 | if (rc > aa->aa_requested_nob) { | |
1548 | CERROR("Unexpected rc %d (%d requested)\n", rc, | |
1549 | aa->aa_requested_nob); | |
0a3bdb00 | 1550 | return -EPROTO; |
d7e09d03 PT |
1551 | } |
1552 | ||
1553 | if (rc != req->rq_bulk->bd_nob_transferred) { | |
e72f36e2 | 1554 | CERROR("Unexpected rc %d (%d transferred)\n", |
79910d7d | 1555 | rc, req->rq_bulk->bd_nob_transferred); |
fbe7c6c7 | 1556 | return -EPROTO; |
d7e09d03 PT |
1557 | } |
1558 | ||
1559 | if (rc < aa->aa_requested_nob) | |
1560 | handle_short_read(rc, aa->aa_page_count, aa->aa_ppga); | |
1561 | ||
1562 | if (body->oa.o_valid & OBD_MD_FLCKSUM) { | |
1563 | static int cksum_counter; | |
29ac6840 | 1564 | __u32 server_cksum = body->oa.o_cksum; |
80feb1ef DE |
1565 | char *via = ""; |
1566 | char *router = ""; | |
d133210f | 1567 | enum cksum_type cksum_type; |
d7e09d03 | 1568 | |
cd94f231 OD |
1569 | cksum_type = cksum_type_unpack(body->oa.o_valid & |
1570 | OBD_MD_FLFLAGS ? | |
d7e09d03 PT |
1571 | body->oa.o_flags : 0); |
1572 | client_cksum = osc_checksum_bulk(rc, aa->aa_page_count, | |
1573 | aa->aa_ppga, OST_READ, | |
1574 | cksum_type); | |
1575 | ||
80feb1ef | 1576 | if (peer->nid != req->rq_bulk->bd_sender) { |
d7e09d03 PT |
1577 | via = " via "; |
1578 | router = libcfs_nid2str(req->rq_bulk->bd_sender); | |
1579 | } | |
1580 | ||
a2ff0f97 | 1581 | if (server_cksum != client_cksum) { |
2d00bd17 | 1582 | LCONSOLE_ERROR_MSG(0x133, "%s: BAD READ CHECKSUM: from %s%s%s inode " DFID " object " DOSTID " extent [%llu-%llu]\n", |
d7e09d03 PT |
1583 | req->rq_import->imp_obd->obd_name, |
1584 | libcfs_nid2str(peer->nid), | |
1585 | via, router, | |
1586 | body->oa.o_valid & OBD_MD_FLFID ? | |
2d00bd17 | 1587 | body->oa.o_parent_seq : (__u64)0, |
d7e09d03 | 1588 | body->oa.o_valid & OBD_MD_FLFID ? |
2d00bd17 | 1589 | body->oa.o_parent_oid : 0, |
d7e09d03 | 1590 | body->oa.o_valid & OBD_MD_FLFID ? |
2d00bd17 | 1591 | body->oa.o_parent_ver : 0, |
d7e09d03 PT |
1592 | POSTID(&body->oa.o_oi), |
1593 | aa->aa_ppga[0]->off, | |
1594 | aa->aa_ppga[aa->aa_page_count-1]->off + | |
1595 | aa->aa_ppga[aa->aa_page_count-1]->count - | |
2d00bd17 | 1596 | 1); |
d7e09d03 PT |
1597 | CERROR("client %x, server %x, cksum_type %x\n", |
1598 | client_cksum, server_cksum, cksum_type); | |
1599 | cksum_counter = 0; | |
1600 | aa->aa_oa->o_cksum = client_cksum; | |
1601 | rc = -EAGAIN; | |
1602 | } else { | |
1603 | cksum_counter++; | |
1604 | CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum); | |
1605 | rc = 0; | |
1606 | } | |
1607 | } else if (unlikely(client_cksum)) { | |
1608 | static int cksum_missed; | |
1609 | ||
1610 | cksum_missed++; | |
1611 | if ((cksum_missed & (-cksum_missed)) == cksum_missed) | |
1612 | CERROR("Checksum %u requested from %s but not sent\n", | |
1613 | cksum_missed, libcfs_nid2str(peer->nid)); | |
1614 | } else { | |
1615 | rc = 0; | |
1616 | } | |
1617 | out: | |
1618 | if (rc >= 0) | |
3b2f75fd | 1619 | lustre_get_wire_obdo(&req->rq_import->imp_connect_data, |
1620 | aa->aa_oa, &body->oa); | |
d7e09d03 | 1621 | |
0a3bdb00 | 1622 | return rc; |
d7e09d03 PT |
1623 | } |
1624 | ||
d7e09d03 PT |
1625 | static int osc_brw_redo_request(struct ptlrpc_request *request, |
1626 | struct osc_brw_async_args *aa, int rc) | |
1627 | { | |
1628 | struct ptlrpc_request *new_req; | |
1629 | struct osc_brw_async_args *new_aa; | |
1630 | struct osc_async_page *oap; | |
d7e09d03 PT |
1631 | |
1632 | DEBUG_REQ(rc == -EINPROGRESS ? D_RPCTRACE : D_ERROR, request, | |
1633 | "redo for recoverable error %d", rc); | |
1634 | ||
1635 | rc = osc_brw_prep_request(lustre_msg_get_opc(request->rq_reqmsg) == | |
b2952d62 | 1636 | OST_WRITE ? OBD_BRW_WRITE : OBD_BRW_READ, |
d7e09d03 PT |
1637 | aa->aa_cli, aa->aa_oa, |
1638 | NULL /* lsm unused by osc currently */, | |
1639 | aa->aa_page_count, aa->aa_ppga, | |
ef2e0f55 | 1640 | &new_req, 0, 1); |
d7e09d03 | 1641 | if (rc) |
0a3bdb00 | 1642 | return rc; |
d7e09d03 PT |
1643 | |
1644 | list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) { | |
7f1ae4c0 | 1645 | if (oap->oap_request) { |
d7e09d03 PT |
1646 | LASSERTF(request == oap->oap_request, |
1647 | "request %p != oap_request %p\n", | |
1648 | request, oap->oap_request); | |
1649 | if (oap->oap_interrupted) { | |
1650 | ptlrpc_req_finished(new_req); | |
0a3bdb00 | 1651 | return -EINTR; |
d7e09d03 PT |
1652 | } |
1653 | } | |
1654 | } | |
1655 | /* New request takes over pga and oaps from old request. | |
30aa9c52 OD |
1656 | * Note that copying a list_head doesn't work, need to move it... |
1657 | */ | |
d7e09d03 PT |
1658 | aa->aa_resends++; |
1659 | new_req->rq_interpret_reply = request->rq_interpret_reply; | |
1660 | new_req->rq_async_args = request->rq_async_args; | |
ac5b1481 | 1661 | new_req->rq_commit_cb = request->rq_commit_cb; |
d7e09d03 | 1662 | /* cap resend delay to the current request timeout, this is similar to |
30aa9c52 OD |
1663 | * what ptlrpc does (see after_reply()) |
1664 | */ | |
d7e09d03 | 1665 | if (aa->aa_resends > new_req->rq_timeout) |
219e6de6 | 1666 | new_req->rq_sent = ktime_get_real_seconds() + new_req->rq_timeout; |
d7e09d03 | 1667 | else |
219e6de6 | 1668 | new_req->rq_sent = ktime_get_real_seconds() + aa->aa_resends; |
d7e09d03 PT |
1669 | new_req->rq_generation_set = 1; |
1670 | new_req->rq_import_generation = request->rq_import_generation; | |
1671 | ||
1672 | new_aa = ptlrpc_req_async_args(new_req); | |
1673 | ||
1674 | INIT_LIST_HEAD(&new_aa->aa_oaps); | |
1675 | list_splice_init(&aa->aa_oaps, &new_aa->aa_oaps); | |
1676 | INIT_LIST_HEAD(&new_aa->aa_exts); | |
1677 | list_splice_init(&aa->aa_exts, &new_aa->aa_exts); | |
1678 | new_aa->aa_resends = aa->aa_resends; | |
1679 | ||
1680 | list_for_each_entry(oap, &new_aa->aa_oaps, oap_rpc_item) { | |
1681 | if (oap->oap_request) { | |
1682 | ptlrpc_req_finished(oap->oap_request); | |
1683 | oap->oap_request = ptlrpc_request_addref(new_req); | |
1684 | } | |
1685 | } | |
1686 | ||
d7e09d03 PT |
1687 | /* XXX: This code will run into problem if we're going to support |
1688 | * to add a series of BRW RPCs into a self-defined ptlrpc_request_set | |
1689 | * and wait for all of them to be finished. We should inherit request | |
30aa9c52 OD |
1690 | * set from old request. |
1691 | */ | |
c5c4c6fa | 1692 | ptlrpcd_add_req(new_req); |
d7e09d03 PT |
1693 | |
1694 | DEBUG_REQ(D_INFO, new_req, "new request"); | |
0a3bdb00 | 1695 | return 0; |
d7e09d03 PT |
1696 | } |
1697 | ||
1698 | /* | |
1699 | * ugh, we want disk allocation on the target to happen in offset order. we'll | |
1700 | * follow sedgewicks advice and stick to the dead simple shellsort -- it'll do | |
1701 | * fine for our small page arrays and doesn't require allocation. its an | |
1702 | * insertion sort that swaps elements that are strides apart, shrinking the | |
1703 | * stride down until its '1' and the array is sorted. | |
1704 | */ | |
1705 | static void sort_brw_pages(struct brw_page **array, int num) | |
1706 | { | |
1707 | int stride, i, j; | |
1708 | struct brw_page *tmp; | |
1709 | ||
1710 | if (num == 1) | |
1711 | return; | |
1712 | for (stride = 1; stride < num ; stride = (stride * 3) + 1) | |
1713 | ; | |
1714 | ||
1715 | do { | |
1716 | stride /= 3; | |
1717 | for (i = stride ; i < num ; i++) { | |
1718 | tmp = array[i]; | |
1719 | j = i; | |
1720 | while (j >= stride && array[j - stride]->off > tmp->off) { | |
1721 | array[j] = array[j - stride]; | |
1722 | j -= stride; | |
1723 | } | |
1724 | array[j] = tmp; | |
1725 | } | |
1726 | } while (stride > 1); | |
1727 | } | |
1728 | ||
21aef7d9 | 1729 | static void osc_release_ppga(struct brw_page **ppga, u32 count) |
d7e09d03 | 1730 | { |
7f1ae4c0 | 1731 | LASSERT(ppga); |
7795178d | 1732 | kfree(ppga); |
d7e09d03 PT |
1733 | } |
1734 | ||
d7e09d03 PT |
1735 | static int brw_interpret(const struct lu_env *env, |
1736 | struct ptlrpc_request *req, void *data, int rc) | |
1737 | { | |
1738 | struct osc_brw_async_args *aa = data; | |
1739 | struct osc_extent *ext; | |
1740 | struct osc_extent *tmp; | |
d7e09d03 | 1741 | struct client_obd *cli = aa->aa_cli; |
d7e09d03 PT |
1742 | |
1743 | rc = osc_brw_fini_request(req, rc); | |
1744 | CDEBUG(D_INODE, "request %p aa %p rc %d\n", req, aa, rc); | |
1745 | /* When server return -EINPROGRESS, client should always retry | |
30aa9c52 OD |
1746 | * regardless of the number of times the bulk was resent already. |
1747 | */ | |
d7e09d03 PT |
1748 | if (osc_recoverable_error(rc)) { |
1749 | if (req->rq_import_generation != | |
1750 | req->rq_import->imp_generation) { | |
2d00bd17 | 1751 | CDEBUG(D_HA, "%s: resend cross eviction for object: " DOSTID ", rc = %d.\n", |
d7e09d03 PT |
1752 | req->rq_import->imp_obd->obd_name, |
1753 | POSTID(&aa->aa_oa->o_oi), rc); | |
1754 | } else if (rc == -EINPROGRESS || | |
1755 | client_should_resend(aa->aa_resends, aa->aa_cli)) { | |
1756 | rc = osc_brw_redo_request(req, aa, rc); | |
1757 | } else { | |
b0f5aad5 | 1758 | CERROR("%s: too many resent retries for object: %llu:%llu, rc = %d.\n", |
d7e09d03 PT |
1759 | req->rq_import->imp_obd->obd_name, |
1760 | POSTID(&aa->aa_oa->o_oi), rc); | |
1761 | } | |
1762 | ||
1763 | if (rc == 0) | |
0a3bdb00 | 1764 | return 0; |
d7e09d03 PT |
1765 | else if (rc == -EAGAIN || rc == -EINPROGRESS) |
1766 | rc = -EIO; | |
1767 | } | |
1768 | ||
77605e41 | 1769 | if (rc == 0) { |
d7e09d03 PT |
1770 | struct obdo *oa = aa->aa_oa; |
1771 | struct cl_attr *attr = &osc_env_info(env)->oti_attr; | |
1772 | unsigned long valid = 0; | |
77605e41 JX |
1773 | struct cl_object *obj; |
1774 | struct osc_async_page *last; | |
1775 | ||
1776 | last = brw_page2oap(aa->aa_ppga[aa->aa_page_count - 1]); | |
1777 | obj = osc2cl(last->oap_obj); | |
d7e09d03 | 1778 | |
77605e41 | 1779 | cl_object_attr_lock(obj); |
d7e09d03 PT |
1780 | if (oa->o_valid & OBD_MD_FLBLOCKS) { |
1781 | attr->cat_blocks = oa->o_blocks; | |
1782 | valid |= CAT_BLOCKS; | |
1783 | } | |
1784 | if (oa->o_valid & OBD_MD_FLMTIME) { | |
1785 | attr->cat_mtime = oa->o_mtime; | |
1786 | valid |= CAT_MTIME; | |
1787 | } | |
1788 | if (oa->o_valid & OBD_MD_FLATIME) { | |
1789 | attr->cat_atime = oa->o_atime; | |
1790 | valid |= CAT_ATIME; | |
1791 | } | |
1792 | if (oa->o_valid & OBD_MD_FLCTIME) { | |
1793 | attr->cat_ctime = oa->o_ctime; | |
1794 | valid |= CAT_CTIME; | |
1795 | } | |
77605e41 JX |
1796 | |
1797 | if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) { | |
1798 | struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo; | |
1799 | loff_t last_off = last->oap_count + last->oap_obj_off; | |
1800 | ||
1801 | /* Change file size if this is an out of quota or | |
1802 | * direct IO write and it extends the file size | |
1803 | */ | |
1804 | if (loi->loi_lvb.lvb_size < last_off) { | |
1805 | attr->cat_size = last_off; | |
1806 | valid |= CAT_SIZE; | |
1807 | } | |
1808 | /* Extend KMS if it's not a lockless write */ | |
1809 | if (loi->loi_kms < last_off && | |
1810 | oap2osc_page(last)->ops_srvlock == 0) { | |
1811 | attr->cat_kms = last_off; | |
1812 | valid |= CAT_KMS; | |
1813 | } | |
d7e09d03 | 1814 | } |
77605e41 JX |
1815 | |
1816 | if (valid != 0) | |
1817 | cl_object_attr_set(env, obj, attr, valid); | |
1818 | cl_object_attr_unlock(obj); | |
d7e09d03 | 1819 | } |
2ba262fb | 1820 | kmem_cache_free(obdo_cachep, aa->aa_oa); |
d7e09d03 | 1821 | |
d806f30e JX |
1822 | if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE && rc == 0) |
1823 | osc_inc_unstable_pages(req); | |
1824 | ||
77605e41 JX |
1825 | list_for_each_entry_safe(ext, tmp, &aa->aa_exts, oe_link) { |
1826 | list_del_init(&ext->oe_link); | |
1827 | osc_extent_finish(env, ext, 1, rc); | |
1828 | } | |
1829 | LASSERT(list_empty(&aa->aa_exts)); | |
1830 | LASSERT(list_empty(&aa->aa_oaps)); | |
1831 | ||
d7e09d03 PT |
1832 | cl_req_completion(env, aa->aa_clerq, rc < 0 ? rc : |
1833 | req->rq_bulk->bd_nob_transferred); | |
1834 | osc_release_ppga(aa->aa_ppga, aa->aa_page_count); | |
1835 | ptlrpc_lprocfs_brw(req, req->rq_bulk->bd_nob_transferred); | |
1836 | ||
7d53d8f4 | 1837 | spin_lock(&cli->cl_loi_list_lock); |
d7e09d03 PT |
1838 | /* We need to decrement before osc_ap_completion->osc_wake_cache_waiters |
1839 | * is called so we know whether to go to sync BRWs or wait for more | |
30aa9c52 OD |
1840 | * RPCs to complete |
1841 | */ | |
d7e09d03 PT |
1842 | if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) |
1843 | cli->cl_w_in_flight--; | |
1844 | else | |
1845 | cli->cl_r_in_flight--; | |
1846 | osc_wake_cache_waiters(cli); | |
7d53d8f4 | 1847 | spin_unlock(&cli->cl_loi_list_lock); |
d7e09d03 | 1848 | |
c5c4c6fa | 1849 | osc_io_unplug(env, cli, NULL); |
0a3bdb00 | 1850 | return rc; |
d7e09d03 PT |
1851 | } |
1852 | ||
ac5b1481 PS |
1853 | static void brw_commit(struct ptlrpc_request *req) |
1854 | { | |
ac5b1481 PS |
1855 | /* |
1856 | * If osc_inc_unstable_pages (via osc_extent_finish) races with | |
1857 | * this called via the rq_commit_cb, I need to ensure | |
1858 | * osc_dec_unstable_pages is still called. Otherwise unstable | |
1859 | * pages may be leaked. | |
1860 | */ | |
fa1cc966 JX |
1861 | spin_lock(&req->rq_lock); |
1862 | if (unlikely(req->rq_unstable)) { | |
1863 | req->rq_unstable = 0; | |
ac5b1481 PS |
1864 | spin_unlock(&req->rq_lock); |
1865 | osc_dec_unstable_pages(req); | |
ac5b1481 PS |
1866 | } else { |
1867 | req->rq_committed = 1; | |
fa1cc966 | 1868 | spin_unlock(&req->rq_lock); |
ac5b1481 | 1869 | } |
ac5b1481 PS |
1870 | } |
1871 | ||
d7e09d03 PT |
1872 | /** |
1873 | * Build an RPC by the list of extent @ext_list. The caller must ensure | |
1874 | * that the total pages in this list are NOT over max pages per RPC. | |
1875 | * Extents in the list must be in OES_RPC state. | |
1876 | */ | |
1877 | int osc_build_rpc(const struct lu_env *env, struct client_obd *cli, | |
c5c4c6fa | 1878 | struct list_head *ext_list, int cmd) |
d7e09d03 | 1879 | { |
29ac6840 CH |
1880 | struct ptlrpc_request *req = NULL; |
1881 | struct osc_extent *ext; | |
1882 | struct brw_page **pga = NULL; | |
1883 | struct osc_brw_async_args *aa = NULL; | |
1884 | struct obdo *oa = NULL; | |
1885 | struct osc_async_page *oap; | |
1886 | struct osc_async_page *tmp; | |
1887 | struct cl_req *clerq = NULL; | |
1888 | enum cl_req_type crt = (cmd & OBD_BRW_WRITE) ? CRT_WRITE : CRT_READ; | |
29ac6840 CH |
1889 | struct cl_req_attr *crattr = NULL; |
1890 | u64 starting_offset = OBD_OBJECT_EOF; | |
1891 | u64 ending_offset = 0; | |
1892 | int mpflag = 0; | |
1893 | int mem_tight = 0; | |
1894 | int page_count = 0; | |
d806f30e | 1895 | bool soft_sync = false; |
29ac6840 CH |
1896 | int i; |
1897 | int rc; | |
1898 | struct ost_body *body; | |
d7e09d03 | 1899 | LIST_HEAD(rpc_list); |
d7e09d03 | 1900 | |
d7e09d03 PT |
1901 | LASSERT(!list_empty(ext_list)); |
1902 | ||
1903 | /* add pages into rpc_list to build BRW rpc */ | |
1904 | list_for_each_entry(ext, ext_list, oe_link) { | |
1905 | LASSERT(ext->oe_state == OES_RPC); | |
1906 | mem_tight |= ext->oe_memalloc; | |
1907 | list_for_each_entry(oap, &ext->oe_pages, oap_pending_item) { | |
1908 | ++page_count; | |
1909 | list_add_tail(&oap->oap_rpc_item, &rpc_list); | |
1910 | if (starting_offset > oap->oap_obj_off) | |
1911 | starting_offset = oap->oap_obj_off; | |
1912 | else | |
1913 | LASSERT(oap->oap_page_off == 0); | |
1914 | if (ending_offset < oap->oap_obj_off + oap->oap_count) | |
1915 | ending_offset = oap->oap_obj_off + | |
1916 | oap->oap_count; | |
1917 | else | |
1918 | LASSERT(oap->oap_page_off + oap->oap_count == | |
09cbfeaf | 1919 | PAGE_SIZE); |
d7e09d03 PT |
1920 | } |
1921 | } | |
1922 | ||
d806f30e | 1923 | soft_sync = osc_over_unstable_soft_limit(cli); |
d7e09d03 PT |
1924 | if (mem_tight) |
1925 | mpflag = cfs_memory_pressure_get_and_set(); | |
1926 | ||
7795178d | 1927 | crattr = kzalloc(sizeof(*crattr), GFP_NOFS); |
3408e9ae | 1928 | if (!crattr) { |
26c4ea46 TJ |
1929 | rc = -ENOMEM; |
1930 | goto out; | |
1931 | } | |
cad6fafa | 1932 | |
7795178d | 1933 | pga = kcalloc(page_count, sizeof(*pga), GFP_NOFS); |
7f1ae4c0 | 1934 | if (!pga) { |
26c4ea46 TJ |
1935 | rc = -ENOMEM; |
1936 | goto out; | |
1937 | } | |
d7e09d03 | 1938 | |
c4418dac | 1939 | oa = kmem_cache_zalloc(obdo_cachep, GFP_NOFS); |
7f1ae4c0 | 1940 | if (!oa) { |
26c4ea46 TJ |
1941 | rc = -ENOMEM; |
1942 | goto out; | |
1943 | } | |
d7e09d03 PT |
1944 | |
1945 | i = 0; | |
1946 | list_for_each_entry(oap, &rpc_list, oap_rpc_item) { | |
1947 | struct cl_page *page = oap2cl_page(oap); | |
50ffcb7e | 1948 | |
7f1ae4c0 | 1949 | if (!clerq) { |
d7e09d03 | 1950 | clerq = cl_req_alloc(env, page, crt, |
cad6fafa | 1951 | 1 /* only 1-object rpcs for now */); |
26c4ea46 TJ |
1952 | if (IS_ERR(clerq)) { |
1953 | rc = PTR_ERR(clerq); | |
1954 | goto out; | |
1955 | } | |
d7e09d03 PT |
1956 | } |
1957 | if (mem_tight) | |
1958 | oap->oap_brw_flags |= OBD_BRW_MEMALLOC; | |
d806f30e JX |
1959 | if (soft_sync) |
1960 | oap->oap_brw_flags |= OBD_BRW_SOFT_SYNC; | |
d7e09d03 PT |
1961 | pga[i] = &oap->oap_brw_page; |
1962 | pga[i]->off = oap->oap_obj_off + oap->oap_page_off; | |
1963 | CDEBUG(0, "put page %p index %lu oap %p flg %x to pga\n", | |
badc9fed | 1964 | pga[i]->pg, oap->oap_page->index, oap, |
cad6fafa | 1965 | pga[i]->flag); |
d7e09d03 PT |
1966 | i++; |
1967 | cl_req_page_add(env, clerq, page); | |
1968 | } | |
1969 | ||
1970 | /* always get the data for the obdo for the rpc */ | |
7f1ae4c0 | 1971 | LASSERT(clerq); |
cad6fafa BJ |
1972 | crattr->cra_oa = oa; |
1973 | cl_req_attr_set(env, clerq, crattr, ~0ULL); | |
d7e09d03 PT |
1974 | |
1975 | rc = cl_req_prep(env, clerq); | |
1976 | if (rc != 0) { | |
1977 | CERROR("cl_req_prep failed: %d\n", rc); | |
26c4ea46 | 1978 | goto out; |
d7e09d03 PT |
1979 | } |
1980 | ||
1981 | sort_brw_pages(pga, page_count); | |
1982 | rc = osc_brw_prep_request(cmd, cli, oa, NULL, page_count, | |
79910d7d | 1983 | pga, &req, 1, 0); |
d7e09d03 PT |
1984 | if (rc != 0) { |
1985 | CERROR("prep_req failed: %d\n", rc); | |
26c4ea46 | 1986 | goto out; |
d7e09d03 PT |
1987 | } |
1988 | ||
ac5b1481 | 1989 | req->rq_commit_cb = brw_commit; |
d7e09d03 PT |
1990 | req->rq_interpret_reply = brw_interpret; |
1991 | ||
1992 | if (mem_tight != 0) | |
1993 | req->rq_memalloc = 1; | |
1994 | ||
1995 | /* Need to update the timestamps after the request is built in case | |
1996 | * we race with setattr (locally or in queue at OST). If OST gets | |
1997 | * later setattr before earlier BRW (as determined by the request xid), | |
1998 | * the OST will not use BRW timestamps. Sadly, there is no obvious | |
30aa9c52 OD |
1999 | * way to do this in a single call. bug 10150 |
2000 | */ | |
3ce08cd7 NY |
2001 | body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); |
2002 | crattr->cra_oa = &body->oa; | |
cad6fafa | 2003 | cl_req_attr_set(env, clerq, crattr, |
cd94f231 | 2004 | OBD_MD_FLMTIME | OBD_MD_FLCTIME | OBD_MD_FLATIME); |
d7e09d03 | 2005 | |
cad6fafa | 2006 | lustre_msg_set_jobid(req->rq_reqmsg, crattr->cra_jobid); |
d7e09d03 PT |
2007 | |
2008 | CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args)); | |
2009 | aa = ptlrpc_req_async_args(req); | |
2010 | INIT_LIST_HEAD(&aa->aa_oaps); | |
2011 | list_splice_init(&rpc_list, &aa->aa_oaps); | |
2012 | INIT_LIST_HEAD(&aa->aa_exts); | |
2013 | list_splice_init(ext_list, &aa->aa_exts); | |
2014 | aa->aa_clerq = clerq; | |
2015 | ||
2016 | /* queued sync pages can be torn down while the pages | |
30aa9c52 OD |
2017 | * were between the pending list and the rpc |
2018 | */ | |
d7e09d03 PT |
2019 | tmp = NULL; |
2020 | list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) { | |
2021 | /* only one oap gets a request reference */ | |
7f1ae4c0 | 2022 | if (!tmp) |
d7e09d03 PT |
2023 | tmp = oap; |
2024 | if (oap->oap_interrupted && !req->rq_intr) { | |
2025 | CDEBUG(D_INODE, "oap %p in req %p interrupted\n", | |
79910d7d | 2026 | oap, req); |
d7e09d03 PT |
2027 | ptlrpc_mark_interrupted(req); |
2028 | } | |
2029 | } | |
7f1ae4c0 | 2030 | if (tmp) |
d7e09d03 PT |
2031 | tmp->oap_request = ptlrpc_request_addref(req); |
2032 | ||
7d53d8f4 | 2033 | spin_lock(&cli->cl_loi_list_lock); |
09cbfeaf | 2034 | starting_offset >>= PAGE_SHIFT; |
d7e09d03 PT |
2035 | if (cmd == OBD_BRW_READ) { |
2036 | cli->cl_r_in_flight++; | |
2037 | lprocfs_oh_tally_log2(&cli->cl_read_page_hist, page_count); | |
2038 | lprocfs_oh_tally(&cli->cl_read_rpc_hist, cli->cl_r_in_flight); | |
2039 | lprocfs_oh_tally_log2(&cli->cl_read_offset_hist, | |
2040 | starting_offset + 1); | |
2041 | } else { | |
2042 | cli->cl_w_in_flight++; | |
2043 | lprocfs_oh_tally_log2(&cli->cl_write_page_hist, page_count); | |
2044 | lprocfs_oh_tally(&cli->cl_write_rpc_hist, cli->cl_w_in_flight); | |
2045 | lprocfs_oh_tally_log2(&cli->cl_write_offset_hist, | |
2046 | starting_offset + 1); | |
2047 | } | |
7d53d8f4 | 2048 | spin_unlock(&cli->cl_loi_list_lock); |
d7e09d03 PT |
2049 | |
2050 | DEBUG_REQ(D_INODE, req, "%d pages, aa %p. now %dr/%dw in flight", | |
2051 | page_count, aa, cli->cl_r_in_flight, | |
2052 | cli->cl_w_in_flight); | |
2053 | ||
c5c4c6fa | 2054 | ptlrpcd_add_req(req); |
d7e09d03 | 2055 | rc = 0; |
d7e09d03 PT |
2056 | |
2057 | out: | |
2058 | if (mem_tight != 0) | |
2059 | cfs_memory_pressure_restore(mpflag); | |
2060 | ||
f999d098 | 2061 | kfree(crattr); |
cad6fafa | 2062 | |
d7e09d03 | 2063 | if (rc != 0) { |
7f1ae4c0 | 2064 | LASSERT(!req); |
d7e09d03 PT |
2065 | |
2066 | if (oa) | |
2ba262fb | 2067 | kmem_cache_free(obdo_cachep, oa); |
59e267c0 | 2068 | kfree(pga); |
d7e09d03 | 2069 | /* this should happen rarely and is pretty bad, it makes the |
30aa9c52 OD |
2070 | * pending list not follow the dirty order |
2071 | */ | |
d7e09d03 PT |
2072 | while (!list_empty(ext_list)) { |
2073 | ext = list_entry(ext_list->next, struct osc_extent, | |
79910d7d | 2074 | oe_link); |
d7e09d03 PT |
2075 | list_del_init(&ext->oe_link); |
2076 | osc_extent_finish(env, ext, 0, rc); | |
2077 | } | |
2078 | if (clerq && !IS_ERR(clerq)) | |
2079 | cl_req_completion(env, clerq, rc); | |
2080 | } | |
0a3bdb00 | 2081 | return rc; |
d7e09d03 PT |
2082 | } |
2083 | ||
2084 | static int osc_set_lock_data_with_check(struct ldlm_lock *lock, | |
2085 | struct ldlm_enqueue_info *einfo) | |
2086 | { | |
2087 | void *data = einfo->ei_cbdata; | |
2088 | int set = 0; | |
2089 | ||
d7e09d03 PT |
2090 | LASSERT(lock->l_blocking_ast == einfo->ei_cb_bl); |
2091 | LASSERT(lock->l_resource->lr_type == einfo->ei_type); | |
2092 | LASSERT(lock->l_completion_ast == einfo->ei_cb_cp); | |
2093 | LASSERT(lock->l_glimpse_ast == einfo->ei_cb_gl); | |
2094 | ||
2095 | lock_res_and_lock(lock); | |
d7e09d03 | 2096 | |
7f1ae4c0 | 2097 | if (!lock->l_ast_data) |
d7e09d03 PT |
2098 | lock->l_ast_data = data; |
2099 | if (lock->l_ast_data == data) | |
2100 | set = 1; | |
2101 | ||
d7e09d03 PT |
2102 | unlock_res_and_lock(lock); |
2103 | ||
2104 | return set; | |
2105 | } | |
2106 | ||
2107 | static int osc_set_data_with_check(struct lustre_handle *lockh, | |
2108 | struct ldlm_enqueue_info *einfo) | |
2109 | { | |
2110 | struct ldlm_lock *lock = ldlm_handle2lock(lockh); | |
2111 | int set = 0; | |
2112 | ||
7f1ae4c0 | 2113 | if (lock) { |
d7e09d03 PT |
2114 | set = osc_set_lock_data_with_check(lock, einfo); |
2115 | LDLM_LOCK_PUT(lock); | |
2116 | } else | |
2117 | CERROR("lockh %p, data %p - client evicted?\n", | |
2118 | lockh, einfo->ei_cbdata); | |
2119 | return set; | |
2120 | } | |
2121 | ||
06563b56 JX |
2122 | static int osc_enqueue_fini(struct ptlrpc_request *req, |
2123 | osc_enqueue_upcall_f upcall, void *cookie, | |
2124 | struct lustre_handle *lockh, enum ldlm_mode mode, | |
2125 | __u64 *flags, int agl, int errcode) | |
d7e09d03 | 2126 | { |
06563b56 JX |
2127 | bool intent = *flags & LDLM_FL_HAS_INTENT; |
2128 | int rc; | |
50ffcb7e | 2129 | |
06563b56 JX |
2130 | /* The request was created before ldlm_cli_enqueue call. */ |
2131 | if (intent && errcode == ELDLM_LOCK_ABORTED) { | |
2132 | struct ldlm_reply *rep; | |
d7e09d03 | 2133 | |
06563b56 | 2134 | rep = req_capsule_server_get(&req->rq_pill, &RMF_DLM_REP); |
d7e09d03 | 2135 | |
06563b56 JX |
2136 | rep->lock_policy_res1 = |
2137 | ptlrpc_status_ntoh(rep->lock_policy_res1); | |
2138 | if (rep->lock_policy_res1) | |
2139 | errcode = rep->lock_policy_res1; | |
2140 | if (!agl) | |
2141 | *flags |= LDLM_FL_LVB_READY; | |
2142 | } else if (errcode == ELDLM_OK) { | |
d7e09d03 | 2143 | *flags |= LDLM_FL_LVB_READY; |
d7e09d03 PT |
2144 | } |
2145 | ||
2146 | /* Call the update callback. */ | |
06563b56 JX |
2147 | rc = (*upcall)(cookie, lockh, errcode); |
2148 | /* release the reference taken in ldlm_cli_enqueue() */ | |
2149 | if (errcode == ELDLM_LOCK_MATCHED) | |
2150 | errcode = ELDLM_OK; | |
2151 | if (errcode == ELDLM_OK && lustre_handle_is_used(lockh)) | |
2152 | ldlm_lock_decref(lockh, mode); | |
2153 | ||
0a3bdb00 | 2154 | return rc; |
d7e09d03 PT |
2155 | } |
2156 | ||
2157 | static int osc_enqueue_interpret(const struct lu_env *env, | |
2158 | struct ptlrpc_request *req, | |
2159 | struct osc_enqueue_args *aa, int rc) | |
2160 | { | |
2161 | struct ldlm_lock *lock; | |
06563b56 JX |
2162 | struct lustre_handle *lockh = &aa->oa_lockh; |
2163 | enum ldlm_mode mode = aa->oa_mode; | |
2164 | struct ost_lvb *lvb = aa->oa_lvb; | |
2165 | __u32 lvb_len = sizeof(*lvb); | |
2166 | __u64 flags = 0; | |
2167 | ||
d7e09d03 PT |
2168 | |
2169 | /* ldlm_cli_enqueue is holding a reference on the lock, so it must | |
30aa9c52 OD |
2170 | * be valid. |
2171 | */ | |
06563b56 JX |
2172 | lock = ldlm_handle2lock(lockh); |
2173 | LASSERTF(lock, "lockh %llx, req %p, aa %p - client evicted?\n", | |
2174 | lockh->cookie, req, aa); | |
d7e09d03 PT |
2175 | |
2176 | /* Take an additional reference so that a blocking AST that | |
2177 | * ldlm_cli_enqueue_fini() might post for a failed lock, is guaranteed | |
2178 | * to arrive after an upcall has been executed by | |
30aa9c52 OD |
2179 | * osc_enqueue_fini(). |
2180 | */ | |
06563b56 | 2181 | ldlm_lock_addref(lockh, mode); |
d7e09d03 | 2182 | |
219eeac8 AB |
2183 | /* Let cl_lock_state_wait fail with -ERESTARTSYS to unuse sublocks. */ |
2184 | OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_ENQUEUE_HANG, 2); | |
2185 | ||
d7e09d03 PT |
2186 | /* Let CP AST to grant the lock first. */ |
2187 | OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_ENQ_RACE, 1); | |
2188 | ||
06563b56 JX |
2189 | if (aa->oa_agl) { |
2190 | LASSERT(!aa->oa_lvb); | |
2191 | LASSERT(!aa->oa_flags); | |
2192 | aa->oa_flags = &flags; | |
d7e09d03 PT |
2193 | } |
2194 | ||
2195 | /* Complete obtaining the lock procedure. */ | |
06563b56 JX |
2196 | rc = ldlm_cli_enqueue_fini(aa->oa_exp, req, aa->oa_type, 1, |
2197 | aa->oa_mode, aa->oa_flags, lvb, lvb_len, | |
2198 | lockh, rc); | |
d7e09d03 | 2199 | /* Complete osc stuff. */ |
06563b56 JX |
2200 | rc = osc_enqueue_fini(req, aa->oa_upcall, aa->oa_cookie, lockh, mode, |
2201 | aa->oa_flags, aa->oa_agl, rc); | |
d7e09d03 PT |
2202 | |
2203 | OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_CANCEL_RACE, 10); | |
2204 | ||
06563b56 | 2205 | ldlm_lock_decref(lockh, mode); |
d7e09d03 PT |
2206 | LDLM_LOCK_PUT(lock); |
2207 | return rc; | |
2208 | } | |
2209 | ||
d7e09d03 PT |
2210 | struct ptlrpc_request_set *PTLRPCD_SET = (void *)1; |
2211 | ||
2212 | /* When enqueuing asynchronously, locks are not ordered, we can obtain a lock | |
2213 | * from the 2nd OSC before a lock from the 1st one. This does not deadlock with | |
2214 | * other synchronous requests, however keeping some locks and trying to obtain | |
2215 | * others may take a considerable amount of time in a case of ost failure; and | |
2216 | * when other sync requests do not get released lock from a client, the client | |
06563b56 | 2217 | * is evicted from the cluster -- such scenaries make the life difficult, so |
30aa9c52 OD |
2218 | * release locks just after they are obtained. |
2219 | */ | |
d7e09d03 PT |
2220 | int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id, |
2221 | __u64 *flags, ldlm_policy_data_t *policy, | |
2222 | struct ost_lvb *lvb, int kms_valid, | |
06563b56 | 2223 | osc_enqueue_upcall_f upcall, void *cookie, |
d7e09d03 | 2224 | struct ldlm_enqueue_info *einfo, |
d7e09d03 PT |
2225 | struct ptlrpc_request_set *rqset, int async, int agl) |
2226 | { | |
2227 | struct obd_device *obd = exp->exp_obd; | |
06563b56 | 2228 | struct lustre_handle lockh = { 0 }; |
d7e09d03 PT |
2229 | struct ptlrpc_request *req = NULL; |
2230 | int intent = *flags & LDLM_FL_HAS_INTENT; | |
025fd3c2 | 2231 | __u64 match_flags = *flags; |
52ee0d20 | 2232 | enum ldlm_mode mode; |
d7e09d03 | 2233 | int rc; |
d7e09d03 PT |
2234 | |
2235 | /* Filesystem lock extents are extended to page boundaries so that | |
30aa9c52 OD |
2236 | * dealing with the page cache is a little smoother. |
2237 | */ | |
616387e8 OD |
2238 | policy->l_extent.start -= policy->l_extent.start & ~PAGE_MASK; |
2239 | policy->l_extent.end |= ~PAGE_MASK; | |
d7e09d03 PT |
2240 | |
2241 | /* | |
2242 | * kms is not valid when either object is completely fresh (so that no | |
2243 | * locks are cached), or object was evicted. In the latter case cached | |
2244 | * lock cannot be used, because it would prime inode state with | |
2245 | * potentially stale LVB. | |
2246 | */ | |
2247 | if (!kms_valid) | |
2248 | goto no_match; | |
2249 | ||
2250 | /* Next, search for already existing extent locks that will cover us */ | |
2251 | /* If we're trying to read, we also search for an existing PW lock. The | |
2252 | * VFS and page cache already protect us locally, so lots of readers/ | |
2253 | * writers can share a single PW lock. | |
2254 | * | |
2255 | * There are problems with conversion deadlocks, so instead of | |
2256 | * converting a read lock to a write lock, we'll just enqueue a new | |
2257 | * one. | |
2258 | * | |
2259 | * At some point we should cancel the read lock instead of making them | |
2260 | * send us a blocking callback, but there are problems with canceling | |
30aa9c52 OD |
2261 | * locks out from other users right now, too. |
2262 | */ | |
d7e09d03 PT |
2263 | mode = einfo->ei_mode; |
2264 | if (einfo->ei_mode == LCK_PR) | |
2265 | mode |= LCK_PW; | |
025fd3c2 AS |
2266 | if (agl == 0) |
2267 | match_flags |= LDLM_FL_LVB_READY; | |
2268 | if (intent != 0) | |
2269 | match_flags |= LDLM_FL_BLOCK_GRANTED; | |
2270 | mode = ldlm_lock_match(obd->obd_namespace, match_flags, res_id, | |
06563b56 | 2271 | einfo->ei_type, policy, mode, &lockh, 0); |
d7e09d03 | 2272 | if (mode) { |
06563b56 | 2273 | struct ldlm_lock *matched; |
d7e09d03 | 2274 | |
06563b56 JX |
2275 | if (*flags & LDLM_FL_TEST_LOCK) |
2276 | return ELDLM_OK; | |
2277 | ||
2278 | matched = ldlm_handle2lock(&lockh); | |
2279 | if (agl) { | |
2280 | /* AGL enqueues DLM locks speculatively. Therefore if | |
2281 | * it already exists a DLM lock, it wll just inform the | |
2282 | * caller to cancel the AGL process for this stripe. | |
30aa9c52 | 2283 | */ |
06563b56 | 2284 | ldlm_lock_decref(&lockh, mode); |
d7e09d03 | 2285 | LDLM_LOCK_PUT(matched); |
0a3bdb00 | 2286 | return -ECANCELED; |
06563b56 | 2287 | } else if (osc_set_lock_data_with_check(matched, einfo)) { |
d7e09d03 | 2288 | *flags |= LDLM_FL_LVB_READY; |
06563b56 JX |
2289 | /* We already have a lock, and it's referenced. */ |
2290 | (*upcall)(cookie, &lockh, ELDLM_LOCK_MATCHED); | |
d7e09d03 | 2291 | |
06563b56 | 2292 | ldlm_lock_decref(&lockh, mode); |
d7e09d03 | 2293 | LDLM_LOCK_PUT(matched); |
0a3bdb00 | 2294 | return ELDLM_OK; |
06563b56 JX |
2295 | } else { |
2296 | ldlm_lock_decref(&lockh, mode); | |
2297 | LDLM_LOCK_PUT(matched); | |
d7e09d03 PT |
2298 | } |
2299 | } | |
2300 | ||
06563b56 JX |
2301 | no_match: |
2302 | if (*flags & LDLM_FL_TEST_LOCK) | |
2303 | return -ENOLCK; | |
d7e09d03 | 2304 | if (intent) { |
d7e09d03 PT |
2305 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), |
2306 | &RQF_LDLM_ENQUEUE_LVB); | |
7f1ae4c0 | 2307 | if (!req) |
0a3bdb00 | 2308 | return -ENOMEM; |
d7e09d03 | 2309 | |
2640256e VF |
2310 | rc = ldlm_prep_enqueue_req(exp, req, NULL, 0); |
2311 | if (rc) { | |
d7e09d03 | 2312 | ptlrpc_request_free(req); |
0a3bdb00 | 2313 | return rc; |
d7e09d03 PT |
2314 | } |
2315 | ||
2316 | req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER, | |
ec83e611 | 2317 | sizeof(*lvb)); |
d7e09d03 PT |
2318 | ptlrpc_request_set_replen(req); |
2319 | } | |
2320 | ||
2321 | /* users of osc_enqueue() can pass this flag for ldlm_lock_match() */ | |
2322 | *flags &= ~LDLM_FL_BLOCK_GRANTED; | |
2323 | ||
2324 | rc = ldlm_cli_enqueue(exp, &req, einfo, res_id, policy, flags, lvb, | |
06563b56 JX |
2325 | sizeof(*lvb), LVB_T_OST, &lockh, async); |
2326 | if (async) { | |
d7e09d03 PT |
2327 | if (!rc) { |
2328 | struct osc_enqueue_args *aa; | |
50ffcb7e | 2329 | |
06563b56 | 2330 | CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args)); |
d7e09d03 | 2331 | aa = ptlrpc_req_async_args(req); |
d7e09d03 | 2332 | aa->oa_exp = exp; |
06563b56 JX |
2333 | aa->oa_mode = einfo->ei_mode; |
2334 | aa->oa_type = einfo->ei_type; | |
2335 | lustre_handle_copy(&aa->oa_lockh, &lockh); | |
d7e09d03 PT |
2336 | aa->oa_upcall = upcall; |
2337 | aa->oa_cookie = cookie; | |
d7e09d03 | 2338 | aa->oa_agl = !!agl; |
06563b56 JX |
2339 | if (!agl) { |
2340 | aa->oa_flags = flags; | |
2341 | aa->oa_lvb = lvb; | |
2342 | } else { | |
2343 | /* AGL is essentially to enqueue an DLM lock | |
2344 | * in advance, so we don't care about the | |
2345 | * result of AGL enqueue. | |
2346 | */ | |
2347 | aa->oa_lvb = NULL; | |
2348 | aa->oa_flags = NULL; | |
2349 | } | |
d7e09d03 PT |
2350 | |
2351 | req->rq_interpret_reply = | |
2352 | (ptlrpc_interpterer_t)osc_enqueue_interpret; | |
2353 | if (rqset == PTLRPCD_SET) | |
c5c4c6fa | 2354 | ptlrpcd_add_req(req); |
d7e09d03 PT |
2355 | else |
2356 | ptlrpc_set_add_req(rqset, req); | |
2357 | } else if (intent) { | |
2358 | ptlrpc_req_finished(req); | |
2359 | } | |
0a3bdb00 | 2360 | return rc; |
d7e09d03 PT |
2361 | } |
2362 | ||
06563b56 JX |
2363 | rc = osc_enqueue_fini(req, upcall, cookie, &lockh, einfo->ei_mode, |
2364 | flags, agl, rc); | |
d7e09d03 PT |
2365 | if (intent) |
2366 | ptlrpc_req_finished(req); | |
2367 | ||
0a3bdb00 | 2368 | return rc; |
d7e09d03 PT |
2369 | } |
2370 | ||
d7e09d03 PT |
2371 | int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id, |
2372 | __u32 type, ldlm_policy_data_t *policy, __u32 mode, | |
875332d4 | 2373 | __u64 *flags, void *data, struct lustre_handle *lockh, |
d7e09d03 PT |
2374 | int unref) |
2375 | { | |
2376 | struct obd_device *obd = exp->exp_obd; | |
875332d4 | 2377 | __u64 lflags = *flags; |
52ee0d20 | 2378 | enum ldlm_mode rc; |
d7e09d03 PT |
2379 | |
2380 | if (OBD_FAIL_CHECK(OBD_FAIL_OSC_MATCH)) | |
0a3bdb00 | 2381 | return -EIO; |
d7e09d03 PT |
2382 | |
2383 | /* Filesystem lock extents are extended to page boundaries so that | |
30aa9c52 OD |
2384 | * dealing with the page cache is a little smoother |
2385 | */ | |
616387e8 OD |
2386 | policy->l_extent.start -= policy->l_extent.start & ~PAGE_MASK; |
2387 | policy->l_extent.end |= ~PAGE_MASK; | |
d7e09d03 PT |
2388 | |
2389 | /* Next, search for already existing extent locks that will cover us */ | |
2390 | /* If we're trying to read, we also search for an existing PW lock. The | |
2391 | * VFS and page cache already protect us locally, so lots of readers/ | |
30aa9c52 OD |
2392 | * writers can share a single PW lock. |
2393 | */ | |
d7e09d03 PT |
2394 | rc = mode; |
2395 | if (mode == LCK_PR) | |
2396 | rc |= LCK_PW; | |
2397 | rc = ldlm_lock_match(obd->obd_namespace, lflags, | |
2398 | res_id, type, policy, rc, lockh, unref); | |
2399 | if (rc) { | |
7f1ae4c0 | 2400 | if (data) { |
d7e09d03 PT |
2401 | if (!osc_set_data_with_check(lockh, data)) { |
2402 | if (!(lflags & LDLM_FL_TEST_LOCK)) | |
2403 | ldlm_lock_decref(lockh, rc); | |
0a3bdb00 | 2404 | return 0; |
d7e09d03 PT |
2405 | } |
2406 | } | |
2407 | if (!(lflags & LDLM_FL_TEST_LOCK) && mode != rc) { | |
2408 | ldlm_lock_addref(lockh, LCK_PR); | |
2409 | ldlm_lock_decref(lockh, LCK_PW); | |
2410 | } | |
0a3bdb00 | 2411 | return rc; |
d7e09d03 | 2412 | } |
0a3bdb00 | 2413 | return rc; |
d7e09d03 PT |
2414 | } |
2415 | ||
2416 | int osc_cancel_base(struct lustre_handle *lockh, __u32 mode) | |
2417 | { | |
d7e09d03 PT |
2418 | if (unlikely(mode == LCK_GROUP)) |
2419 | ldlm_lock_decref_and_cancel(lockh, mode); | |
2420 | else | |
2421 | ldlm_lock_decref(lockh, mode); | |
2422 | ||
0a3bdb00 | 2423 | return 0; |
d7e09d03 PT |
2424 | } |
2425 | ||
d7e09d03 PT |
2426 | static int osc_statfs_interpret(const struct lu_env *env, |
2427 | struct ptlrpc_request *req, | |
2428 | struct osc_async_args *aa, int rc) | |
2429 | { | |
2430 | struct obd_statfs *msfs; | |
d7e09d03 PT |
2431 | |
2432 | if (rc == -EBADR) | |
2433 | /* The request has in fact never been sent | |
2434 | * due to issues at a higher level (LOV). | |
2435 | * Exit immediately since the caller is | |
2436 | * aware of the problem and takes care | |
30aa9c52 OD |
2437 | * of the clean up |
2438 | */ | |
defa220f | 2439 | return rc; |
d7e09d03 PT |
2440 | |
2441 | if ((rc == -ENOTCONN || rc == -EAGAIN) && | |
26c4ea46 TJ |
2442 | (aa->aa_oi->oi_flags & OBD_STATFS_NODELAY)) { |
2443 | rc = 0; | |
2444 | goto out; | |
2445 | } | |
d7e09d03 PT |
2446 | |
2447 | if (rc != 0) | |
26c4ea46 | 2448 | goto out; |
d7e09d03 PT |
2449 | |
2450 | msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS); | |
7f1ae4c0 | 2451 | if (!msfs) { |
26c4ea46 TJ |
2452 | rc = -EPROTO; |
2453 | goto out; | |
d7e09d03 PT |
2454 | } |
2455 | ||
2456 | *aa->aa_oi->oi_osfs = *msfs; | |
2457 | out: | |
2458 | rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc); | |
0a3bdb00 | 2459 | return rc; |
d7e09d03 PT |
2460 | } |
2461 | ||
2462 | static int osc_statfs_async(struct obd_export *exp, | |
2463 | struct obd_info *oinfo, __u64 max_age, | |
2464 | struct ptlrpc_request_set *rqset) | |
2465 | { | |
29ac6840 | 2466 | struct obd_device *obd = class_exp2obd(exp); |
d7e09d03 PT |
2467 | struct ptlrpc_request *req; |
2468 | struct osc_async_args *aa; | |
29ac6840 | 2469 | int rc; |
d7e09d03 PT |
2470 | |
2471 | /* We could possibly pass max_age in the request (as an absolute | |
2472 | * timestamp or a "seconds.usec ago") so the target can avoid doing | |
2473 | * extra calls into the filesystem if that isn't necessary (e.g. | |
2474 | * during mount that would help a bit). Having relative timestamps | |
2475 | * is not so great if request processing is slow, while absolute | |
30aa9c52 OD |
2476 | * timestamps are not ideal because they need time synchronization. |
2477 | */ | |
d7e09d03 | 2478 | req = ptlrpc_request_alloc(obd->u.cli.cl_import, &RQF_OST_STATFS); |
7f1ae4c0 | 2479 | if (!req) |
0a3bdb00 | 2480 | return -ENOMEM; |
d7e09d03 PT |
2481 | |
2482 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS); | |
2483 | if (rc) { | |
2484 | ptlrpc_request_free(req); | |
0a3bdb00 | 2485 | return rc; |
d7e09d03 PT |
2486 | } |
2487 | ptlrpc_request_set_replen(req); | |
2488 | req->rq_request_portal = OST_CREATE_PORTAL; | |
2489 | ptlrpc_at_set_req_timeout(req); | |
2490 | ||
2491 | if (oinfo->oi_flags & OBD_STATFS_NODELAY) { | |
2492 | /* procfs requests not want stat in wait for avoid deadlock */ | |
2493 | req->rq_no_resend = 1; | |
2494 | req->rq_no_delay = 1; | |
2495 | } | |
2496 | ||
2497 | req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_statfs_interpret; | |
e9570b49 | 2498 | CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args)); |
d7e09d03 PT |
2499 | aa = ptlrpc_req_async_args(req); |
2500 | aa->aa_oi = oinfo; | |
2501 | ||
2502 | ptlrpc_set_add_req(rqset, req); | |
0a3bdb00 | 2503 | return 0; |
d7e09d03 PT |
2504 | } |
2505 | ||
2506 | static int osc_statfs(const struct lu_env *env, struct obd_export *exp, | |
2507 | struct obd_statfs *osfs, __u64 max_age, __u32 flags) | |
2508 | { | |
29ac6840 CH |
2509 | struct obd_device *obd = class_exp2obd(exp); |
2510 | struct obd_statfs *msfs; | |
d7e09d03 | 2511 | struct ptlrpc_request *req; |
29ac6840 | 2512 | struct obd_import *imp = NULL; |
d7e09d03 | 2513 | int rc; |
d7e09d03 | 2514 | |
30aa9c52 OD |
2515 | /* Since the request might also come from lprocfs, so we need |
2516 | * sync this with client_disconnect_export Bug15684 | |
2517 | */ | |
d7e09d03 PT |
2518 | down_read(&obd->u.cli.cl_sem); |
2519 | if (obd->u.cli.cl_import) | |
2520 | imp = class_import_get(obd->u.cli.cl_import); | |
2521 | up_read(&obd->u.cli.cl_sem); | |
2522 | if (!imp) | |
0a3bdb00 | 2523 | return -ENODEV; |
d7e09d03 PT |
2524 | |
2525 | /* We could possibly pass max_age in the request (as an absolute | |
2526 | * timestamp or a "seconds.usec ago") so the target can avoid doing | |
2527 | * extra calls into the filesystem if that isn't necessary (e.g. | |
2528 | * during mount that would help a bit). Having relative timestamps | |
2529 | * is not so great if request processing is slow, while absolute | |
30aa9c52 OD |
2530 | * timestamps are not ideal because they need time synchronization. |
2531 | */ | |
d7e09d03 PT |
2532 | req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS); |
2533 | ||
2534 | class_import_put(imp); | |
2535 | ||
7f1ae4c0 | 2536 | if (!req) |
0a3bdb00 | 2537 | return -ENOMEM; |
d7e09d03 PT |
2538 | |
2539 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS); | |
2540 | if (rc) { | |
2541 | ptlrpc_request_free(req); | |
0a3bdb00 | 2542 | return rc; |
d7e09d03 PT |
2543 | } |
2544 | ptlrpc_request_set_replen(req); | |
2545 | req->rq_request_portal = OST_CREATE_PORTAL; | |
2546 | ptlrpc_at_set_req_timeout(req); | |
2547 | ||
2548 | if (flags & OBD_STATFS_NODELAY) { | |
2549 | /* procfs requests not want stat in wait for avoid deadlock */ | |
2550 | req->rq_no_resend = 1; | |
2551 | req->rq_no_delay = 1; | |
2552 | } | |
2553 | ||
2554 | rc = ptlrpc_queue_wait(req); | |
2555 | if (rc) | |
26c4ea46 | 2556 | goto out; |
d7e09d03 PT |
2557 | |
2558 | msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS); | |
7f1ae4c0 | 2559 | if (!msfs) { |
26c4ea46 TJ |
2560 | rc = -EPROTO; |
2561 | goto out; | |
d7e09d03 PT |
2562 | } |
2563 | ||
2564 | *osfs = *msfs; | |
2565 | ||
d7e09d03 PT |
2566 | out: |
2567 | ptlrpc_req_finished(req); | |
2568 | return rc; | |
2569 | } | |
2570 | ||
2571 | /* Retrieve object striping information. | |
2572 | * | |
2573 | * @lmmu is a pointer to an in-core struct with lmm_ost_count indicating | |
2574 | * the maximum number of OST indices which will fit in the user buffer. | |
2575 | * lmm_magic must be LOV_MAGIC (we only use 1 slot here). | |
2576 | */ | |
ec2d71d0 OD |
2577 | static int osc_getstripe(struct lov_stripe_md *lsm, |
2578 | struct lov_user_md __user *lump) | |
d7e09d03 PT |
2579 | { |
2580 | /* we use lov_user_md_v3 because it is larger than lov_user_md_v1 */ | |
2581 | struct lov_user_md_v3 lum, *lumk; | |
2582 | struct lov_user_ost_data_v1 *lmm_objects; | |
2583 | int rc = 0, lum_size; | |
d7e09d03 PT |
2584 | |
2585 | if (!lsm) | |
0a3bdb00 | 2586 | return -ENODATA; |
d7e09d03 PT |
2587 | |
2588 | /* we only need the header part from user space to get lmm_magic and | |
30aa9c52 OD |
2589 | * lmm_stripe_count, (the header part is common to v1 and v3) |
2590 | */ | |
d7e09d03 PT |
2591 | lum_size = sizeof(struct lov_user_md_v1); |
2592 | if (copy_from_user(&lum, lump, lum_size)) | |
0a3bdb00 | 2593 | return -EFAULT; |
d7e09d03 PT |
2594 | |
2595 | if ((lum.lmm_magic != LOV_USER_MAGIC_V1) && | |
2596 | (lum.lmm_magic != LOV_USER_MAGIC_V3)) | |
0a3bdb00 | 2597 | return -EINVAL; |
d7e09d03 PT |
2598 | |
2599 | /* lov_user_md_vX and lov_mds_md_vX must have the same size */ | |
2600 | LASSERT(sizeof(struct lov_user_md_v1) == sizeof(struct lov_mds_md_v1)); | |
2601 | LASSERT(sizeof(struct lov_user_md_v3) == sizeof(struct lov_mds_md_v3)); | |
2602 | LASSERT(sizeof(lum.lmm_objects[0]) == sizeof(lumk->lmm_objects[0])); | |
2603 | ||
2604 | /* we can use lov_mds_md_size() to compute lum_size | |
30aa9c52 OD |
2605 | * because lov_user_md_vX and lov_mds_md_vX have the same size |
2606 | */ | |
d7e09d03 PT |
2607 | if (lum.lmm_stripe_count > 0) { |
2608 | lum_size = lov_mds_md_size(lum.lmm_stripe_count, lum.lmm_magic); | |
7795178d | 2609 | lumk = kzalloc(lum_size, GFP_NOFS); |
d7e09d03 | 2610 | if (!lumk) |
0a3bdb00 | 2611 | return -ENOMEM; |
d7e09d03 PT |
2612 | |
2613 | if (lum.lmm_magic == LOV_USER_MAGIC_V1) | |
2614 | lmm_objects = | |
2615 | &(((struct lov_user_md_v1 *)lumk)->lmm_objects[0]); | |
2616 | else | |
49880263 | 2617 | lmm_objects = &lumk->lmm_objects[0]; |
d7e09d03 PT |
2618 | lmm_objects->l_ost_oi = lsm->lsm_oi; |
2619 | } else { | |
2620 | lum_size = lov_mds_md_size(0, lum.lmm_magic); | |
2621 | lumk = &lum; | |
2622 | } | |
2623 | ||
2624 | lumk->lmm_oi = lsm->lsm_oi; | |
2625 | lumk->lmm_stripe_count = 1; | |
2626 | ||
2627 | if (copy_to_user(lump, lumk, lum_size)) | |
2628 | rc = -EFAULT; | |
2629 | ||
2630 | if (lumk != &lum) | |
7795178d | 2631 | kfree(lumk); |
d7e09d03 | 2632 | |
0a3bdb00 | 2633 | return rc; |
d7e09d03 PT |
2634 | } |
2635 | ||
d7e09d03 | 2636 | static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len, |
e09bee34 | 2637 | void *karg, void __user *uarg) |
d7e09d03 PT |
2638 | { |
2639 | struct obd_device *obd = exp->exp_obd; | |
2640 | struct obd_ioctl_data *data = karg; | |
2641 | int err = 0; | |
d7e09d03 PT |
2642 | |
2643 | if (!try_module_get(THIS_MODULE)) { | |
19b2056f JN |
2644 | CERROR("%s: cannot get module '%s'\n", obd->obd_name, |
2645 | module_name(THIS_MODULE)); | |
d7e09d03 PT |
2646 | return -EINVAL; |
2647 | } | |
2648 | switch (cmd) { | |
2649 | case OBD_IOC_LOV_GET_CONFIG: { | |
2650 | char *buf; | |
2651 | struct lov_desc *desc; | |
2652 | struct obd_uuid uuid; | |
2653 | ||
2654 | buf = NULL; | |
2655 | len = 0; | |
b7856753 | 2656 | if (obd_ioctl_getdata(&buf, &len, uarg)) { |
26c4ea46 TJ |
2657 | err = -EINVAL; |
2658 | goto out; | |
2659 | } | |
d7e09d03 PT |
2660 | |
2661 | data = (struct obd_ioctl_data *)buf; | |
2662 | ||
2663 | if (sizeof(*desc) > data->ioc_inllen1) { | |
2664 | obd_ioctl_freedata(buf, len); | |
26c4ea46 TJ |
2665 | err = -EINVAL; |
2666 | goto out; | |
d7e09d03 PT |
2667 | } |
2668 | ||
2669 | if (data->ioc_inllen2 < sizeof(uuid)) { | |
2670 | obd_ioctl_freedata(buf, len); | |
26c4ea46 TJ |
2671 | err = -EINVAL; |
2672 | goto out; | |
d7e09d03 PT |
2673 | } |
2674 | ||
2675 | desc = (struct lov_desc *)data->ioc_inlbuf1; | |
2676 | desc->ld_tgt_count = 1; | |
2677 | desc->ld_active_tgt_count = 1; | |
2678 | desc->ld_default_stripe_count = 1; | |
2679 | desc->ld_default_stripe_size = 0; | |
2680 | desc->ld_default_stripe_offset = 0; | |
2681 | desc->ld_pattern = 0; | |
2682 | memcpy(&desc->ld_uuid, &obd->obd_uuid, sizeof(uuid)); | |
2683 | ||
2684 | memcpy(data->ioc_inlbuf2, &obd->obd_uuid, sizeof(uuid)); | |
2685 | ||
b7856753 | 2686 | err = copy_to_user(uarg, buf, len); |
d7e09d03 PT |
2687 | if (err) |
2688 | err = -EFAULT; | |
2689 | obd_ioctl_freedata(buf, len); | |
26c4ea46 | 2690 | goto out; |
d7e09d03 PT |
2691 | } |
2692 | case LL_IOC_LOV_SETSTRIPE: | |
2693 | err = obd_alloc_memmd(exp, karg); | |
2694 | if (err > 0) | |
2695 | err = 0; | |
26c4ea46 | 2696 | goto out; |
d7e09d03 PT |
2697 | case LL_IOC_LOV_GETSTRIPE: |
2698 | err = osc_getstripe(karg, uarg); | |
26c4ea46 | 2699 | goto out; |
d7e09d03 PT |
2700 | case OBD_IOC_CLIENT_RECOVER: |
2701 | err = ptlrpc_recover_import(obd->u.cli.cl_import, | |
2702 | data->ioc_inlbuf1, 0); | |
2703 | if (err > 0) | |
2704 | err = 0; | |
26c4ea46 | 2705 | goto out; |
d7e09d03 PT |
2706 | case IOC_OSC_SET_ACTIVE: |
2707 | err = ptlrpc_set_import_active(obd->u.cli.cl_import, | |
2708 | data->ioc_offset); | |
26c4ea46 | 2709 | goto out; |
d7e09d03 | 2710 | case OBD_IOC_POLL_QUOTACHECK: |
167a47c5 | 2711 | err = osc_quota_poll_check(exp, karg); |
26c4ea46 | 2712 | goto out; |
d7e09d03 PT |
2713 | case OBD_IOC_PING_TARGET: |
2714 | err = ptlrpc_obd_ping(obd); | |
26c4ea46 | 2715 | goto out; |
d7e09d03 PT |
2716 | default: |
2717 | CDEBUG(D_INODE, "unrecognised ioctl %#x by %s\n", | |
2718 | cmd, current_comm()); | |
26c4ea46 TJ |
2719 | err = -ENOTTY; |
2720 | goto out; | |
d7e09d03 PT |
2721 | } |
2722 | out: | |
2723 | module_put(THIS_MODULE); | |
2724 | return err; | |
2725 | } | |
2726 | ||
2727 | static int osc_get_info(const struct lu_env *env, struct obd_export *exp, | |
21aef7d9 | 2728 | u32 keylen, void *key, __u32 *vallen, void *val, |
d7e09d03 PT |
2729 | struct lov_stripe_md *lsm) |
2730 | { | |
d7e09d03 | 2731 | if (!vallen || !val) |
0a3bdb00 | 2732 | return -EFAULT; |
d7e09d03 PT |
2733 | |
2734 | if (KEY_IS(KEY_LOCK_TO_STRIPE)) { | |
2735 | __u32 *stripe = val; | |
2736 | *vallen = sizeof(*stripe); | |
2737 | *stripe = 0; | |
0a3bdb00 | 2738 | return 0; |
d7e09d03 PT |
2739 | } else if (KEY_IS(KEY_LAST_ID)) { |
2740 | struct ptlrpc_request *req; | |
29ac6840 CH |
2741 | u64 *reply; |
2742 | char *tmp; | |
2743 | int rc; | |
d7e09d03 PT |
2744 | |
2745 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), | |
2746 | &RQF_OST_GET_INFO_LAST_ID); | |
7f1ae4c0 | 2747 | if (!req) |
0a3bdb00 | 2748 | return -ENOMEM; |
d7e09d03 PT |
2749 | |
2750 | req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY, | |
2751 | RCL_CLIENT, keylen); | |
2752 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO); | |
2753 | if (rc) { | |
2754 | ptlrpc_request_free(req); | |
0a3bdb00 | 2755 | return rc; |
d7e09d03 PT |
2756 | } |
2757 | ||
2758 | tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY); | |
2759 | memcpy(tmp, key, keylen); | |
2760 | ||
04a6284f NC |
2761 | req->rq_no_delay = 1; |
2762 | req->rq_no_resend = 1; | |
d7e09d03 PT |
2763 | ptlrpc_request_set_replen(req); |
2764 | rc = ptlrpc_queue_wait(req); | |
2765 | if (rc) | |
26c4ea46 | 2766 | goto out; |
d7e09d03 PT |
2767 | |
2768 | reply = req_capsule_server_get(&req->rq_pill, &RMF_OBD_ID); | |
7f1ae4c0 | 2769 | if (!reply) { |
26c4ea46 TJ |
2770 | rc = -EPROTO; |
2771 | goto out; | |
2772 | } | |
d7e09d03 | 2773 | |
21aef7d9 | 2774 | *((u64 *)val) = *reply; |
c71d2645 | 2775 | out: |
d7e09d03 | 2776 | ptlrpc_req_finished(req); |
0a3bdb00 | 2777 | return rc; |
d7e09d03 | 2778 | } else if (KEY_IS(KEY_FIEMAP)) { |
167a47c5 | 2779 | struct ll_fiemap_info_key *fm_key = key; |
29ac6840 CH |
2780 | struct ldlm_res_id res_id; |
2781 | ldlm_policy_data_t policy; | |
2782 | struct lustre_handle lockh; | |
52ee0d20 | 2783 | enum ldlm_mode mode = 0; |
29ac6840 CH |
2784 | struct ptlrpc_request *req; |
2785 | struct ll_user_fiemap *reply; | |
2786 | char *tmp; | |
2787 | int rc; | |
9d865439 AB |
2788 | |
2789 | if (!(fm_key->fiemap.fm_flags & FIEMAP_FLAG_SYNC)) | |
2790 | goto skip_locking; | |
2791 | ||
2792 | policy.l_extent.start = fm_key->fiemap.fm_start & | |
616387e8 | 2793 | PAGE_MASK; |
9d865439 AB |
2794 | |
2795 | if (OBD_OBJECT_EOF - fm_key->fiemap.fm_length <= | |
09cbfeaf | 2796 | fm_key->fiemap.fm_start + PAGE_SIZE - 1) |
9d865439 AB |
2797 | policy.l_extent.end = OBD_OBJECT_EOF; |
2798 | else | |
2799 | policy.l_extent.end = (fm_key->fiemap.fm_start + | |
2800 | fm_key->fiemap.fm_length + | |
5f479924 | 2801 | PAGE_SIZE - 1) & PAGE_MASK; |
9d865439 AB |
2802 | |
2803 | ostid_build_res_name(&fm_key->oa.o_oi, &res_id); | |
2804 | mode = ldlm_lock_match(exp->exp_obd->obd_namespace, | |
2805 | LDLM_FL_BLOCK_GRANTED | | |
2806 | LDLM_FL_LVB_READY, | |
2807 | &res_id, LDLM_EXTENT, &policy, | |
2808 | LCK_PR | LCK_PW, &lockh, 0); | |
2809 | if (mode) { /* lock is cached on client */ | |
2810 | if (mode != LCK_PR) { | |
2811 | ldlm_lock_addref(&lockh, LCK_PR); | |
2812 | ldlm_lock_decref(&lockh, LCK_PW); | |
2813 | } | |
2814 | } else { /* no cached lock, needs acquire lock on server side */ | |
2815 | fm_key->oa.o_valid |= OBD_MD_FLFLAGS; | |
2816 | fm_key->oa.o_flags |= OBD_FL_SRVLOCK; | |
2817 | } | |
d7e09d03 | 2818 | |
9d865439 | 2819 | skip_locking: |
d7e09d03 PT |
2820 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), |
2821 | &RQF_OST_GET_INFO_FIEMAP); | |
7f1ae4c0 | 2822 | if (!req) { |
26c4ea46 TJ |
2823 | rc = -ENOMEM; |
2824 | goto drop_lock; | |
2825 | } | |
d7e09d03 PT |
2826 | |
2827 | req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_KEY, | |
2828 | RCL_CLIENT, keylen); | |
2829 | req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL, | |
2830 | RCL_CLIENT, *vallen); | |
2831 | req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL, | |
2832 | RCL_SERVER, *vallen); | |
2833 | ||
2834 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO); | |
2835 | if (rc) { | |
2836 | ptlrpc_request_free(req); | |
26c4ea46 | 2837 | goto drop_lock; |
d7e09d03 PT |
2838 | } |
2839 | ||
2840 | tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_KEY); | |
2841 | memcpy(tmp, key, keylen); | |
2842 | tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_VAL); | |
2843 | memcpy(tmp, val, *vallen); | |
2844 | ||
2845 | ptlrpc_request_set_replen(req); | |
2846 | rc = ptlrpc_queue_wait(req); | |
2847 | if (rc) | |
26c4ea46 | 2848 | goto fini_req; |
d7e09d03 PT |
2849 | |
2850 | reply = req_capsule_server_get(&req->rq_pill, &RMF_FIEMAP_VAL); | |
7f1ae4c0 | 2851 | if (!reply) { |
26c4ea46 TJ |
2852 | rc = -EPROTO; |
2853 | goto fini_req; | |
2854 | } | |
d7e09d03 PT |
2855 | |
2856 | memcpy(val, reply, *vallen); | |
9d865439 | 2857 | fini_req: |
d7e09d03 | 2858 | ptlrpc_req_finished(req); |
9d865439 AB |
2859 | drop_lock: |
2860 | if (mode) | |
2861 | ldlm_lock_decref(&lockh, LCK_PR); | |
0a3bdb00 | 2862 | return rc; |
d7e09d03 PT |
2863 | } |
2864 | ||
0a3bdb00 | 2865 | return -EINVAL; |
d7e09d03 PT |
2866 | } |
2867 | ||
2868 | static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp, | |
21aef7d9 | 2869 | u32 keylen, void *key, u32 vallen, |
d7e09d03 PT |
2870 | void *val, struct ptlrpc_request_set *set) |
2871 | { | |
2872 | struct ptlrpc_request *req; | |
29ac6840 CH |
2873 | struct obd_device *obd = exp->exp_obd; |
2874 | struct obd_import *imp = class_exp2cliimp(exp); | |
2875 | char *tmp; | |
2876 | int rc; | |
d7e09d03 PT |
2877 | |
2878 | OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_SHUTDOWN, 10); | |
2879 | ||
2880 | if (KEY_IS(KEY_CHECKSUM)) { | |
2881 | if (vallen != sizeof(int)) | |
0a3bdb00 | 2882 | return -EINVAL; |
d7e09d03 | 2883 | exp->exp_obd->u.cli.cl_checksum = (*(int *)val) ? 1 : 0; |
0a3bdb00 | 2884 | return 0; |
d7e09d03 PT |
2885 | } |
2886 | ||
2887 | if (KEY_IS(KEY_SPTLRPC_CONF)) { | |
2888 | sptlrpc_conf_client_adapt(obd); | |
0a3bdb00 | 2889 | return 0; |
d7e09d03 PT |
2890 | } |
2891 | ||
2892 | if (KEY_IS(KEY_FLUSH_CTX)) { | |
2893 | sptlrpc_import_flush_my_ctx(imp); | |
0a3bdb00 | 2894 | return 0; |
d7e09d03 PT |
2895 | } |
2896 | ||
2897 | if (KEY_IS(KEY_CACHE_SET)) { | |
2898 | struct client_obd *cli = &obd->u.cli; | |
2899 | ||
7f1ae4c0 | 2900 | LASSERT(!cli->cl_cache); /* only once */ |
167a47c5 | 2901 | cli->cl_cache = val; |
1b02bde3 | 2902 | cl_cache_incref(cli->cl_cache); |
d7e09d03 PT |
2903 | cli->cl_lru_left = &cli->cl_cache->ccc_lru_left; |
2904 | ||
2905 | /* add this osc into entity list */ | |
2906 | LASSERT(list_empty(&cli->cl_lru_osc)); | |
2907 | spin_lock(&cli->cl_cache->ccc_lru_lock); | |
2908 | list_add(&cli->cl_lru_osc, &cli->cl_cache->ccc_lru); | |
2909 | spin_unlock(&cli->cl_cache->ccc_lru_lock); | |
2910 | ||
0a3bdb00 | 2911 | return 0; |
d7e09d03 PT |
2912 | } |
2913 | ||
2914 | if (KEY_IS(KEY_CACHE_LRU_SHRINK)) { | |
2915 | struct client_obd *cli = &obd->u.cli; | |
2916 | int nr = atomic_read(&cli->cl_lru_in_list) >> 1; | |
2917 | int target = *(int *)val; | |
2918 | ||
2579d8d0 | 2919 | nr = osc_lru_shrink(env, cli, min(nr, target), true); |
d7e09d03 | 2920 | *(int *)val -= nr; |
0a3bdb00 | 2921 | return 0; |
d7e09d03 PT |
2922 | } |
2923 | ||
2924 | if (!set && !KEY_IS(KEY_GRANT_SHRINK)) | |
0a3bdb00 | 2925 | return -EINVAL; |
d7e09d03 PT |
2926 | |
2927 | /* We pass all other commands directly to OST. Since nobody calls osc | |
30aa9c52 OD |
2928 | * methods directly and everybody is supposed to go through LOV, we |
2929 | * assume lov checked invalid values for us. | |
2930 | * The only recognised values so far are evict_by_nid and mds_conn. | |
2931 | * Even if something bad goes through, we'd get a -EINVAL from OST | |
2932 | * anyway. | |
2933 | */ | |
d7e09d03 PT |
2934 | |
2935 | req = ptlrpc_request_alloc(imp, KEY_IS(KEY_GRANT_SHRINK) ? | |
2936 | &RQF_OST_SET_GRANT_INFO : | |
2937 | &RQF_OBD_SET_INFO); | |
7f1ae4c0 | 2938 | if (!req) |
0a3bdb00 | 2939 | return -ENOMEM; |
d7e09d03 PT |
2940 | |
2941 | req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY, | |
2942 | RCL_CLIENT, keylen); | |
2943 | if (!KEY_IS(KEY_GRANT_SHRINK)) | |
2944 | req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL, | |
2945 | RCL_CLIENT, vallen); | |
2946 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SET_INFO); | |
2947 | if (rc) { | |
2948 | ptlrpc_request_free(req); | |
0a3bdb00 | 2949 | return rc; |
d7e09d03 PT |
2950 | } |
2951 | ||
2952 | tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY); | |
2953 | memcpy(tmp, key, keylen); | |
2954 | tmp = req_capsule_client_get(&req->rq_pill, KEY_IS(KEY_GRANT_SHRINK) ? | |
2955 | &RMF_OST_BODY : | |
2956 | &RMF_SETINFO_VAL); | |
2957 | memcpy(tmp, val, vallen); | |
2958 | ||
2959 | if (KEY_IS(KEY_GRANT_SHRINK)) { | |
f024bad4 | 2960 | struct osc_brw_async_args *aa; |
d7e09d03 PT |
2961 | struct obdo *oa; |
2962 | ||
2963 | CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args)); | |
2964 | aa = ptlrpc_req_async_args(req); | |
c4418dac | 2965 | oa = kmem_cache_zalloc(obdo_cachep, GFP_NOFS); |
d7e09d03 PT |
2966 | if (!oa) { |
2967 | ptlrpc_req_finished(req); | |
0a3bdb00 | 2968 | return -ENOMEM; |
d7e09d03 PT |
2969 | } |
2970 | *oa = ((struct ost_body *)val)->oa; | |
2971 | aa->aa_oa = oa; | |
2972 | req->rq_interpret_reply = osc_shrink_grant_interpret; | |
2973 | } | |
2974 | ||
2975 | ptlrpc_request_set_replen(req); | |
2976 | if (!KEY_IS(KEY_GRANT_SHRINK)) { | |
7f1ae4c0 | 2977 | LASSERT(set); |
d7e09d03 PT |
2978 | ptlrpc_set_add_req(set, req); |
2979 | ptlrpc_check_set(NULL, set); | |
c5c4c6fa OW |
2980 | } else { |
2981 | ptlrpcd_add_req(req); | |
2982 | } | |
d7e09d03 | 2983 | |
0a3bdb00 | 2984 | return 0; |
d7e09d03 PT |
2985 | } |
2986 | ||
d7e09d03 PT |
2987 | static int osc_reconnect(const struct lu_env *env, |
2988 | struct obd_export *exp, struct obd_device *obd, | |
2989 | struct obd_uuid *cluuid, | |
2990 | struct obd_connect_data *data, | |
2991 | void *localdata) | |
2992 | { | |
2993 | struct client_obd *cli = &obd->u.cli; | |
2994 | ||
7f1ae4c0 | 2995 | if (data && (data->ocd_connect_flags & OBD_CONNECT_GRANT)) { |
d7e09d03 PT |
2996 | long lost_grant; |
2997 | ||
7d53d8f4 | 2998 | spin_lock(&cli->cl_loi_list_lock); |
3147b268 HZ |
2999 | data->ocd_grant = (cli->cl_avail_grant + |
3000 | (cli->cl_dirty_pages << PAGE_SHIFT)) ?: | |
3001 | 2 * cli_brw_size(obd); | |
d7e09d03 PT |
3002 | lost_grant = cli->cl_lost_grant; |
3003 | cli->cl_lost_grant = 0; | |
7d53d8f4 | 3004 | spin_unlock(&cli->cl_loi_list_lock); |
d7e09d03 | 3005 | |
2d00bd17 JP |
3006 | CDEBUG(D_RPCTRACE, "ocd_connect_flags: %#llx ocd_version: %d ocd_grant: %d, lost: %ld.\n", |
3007 | data->ocd_connect_flags, | |
d7e09d03 PT |
3008 | data->ocd_version, data->ocd_grant, lost_grant); |
3009 | } | |
3010 | ||
0a3bdb00 | 3011 | return 0; |
d7e09d03 PT |
3012 | } |
3013 | ||
3014 | static int osc_disconnect(struct obd_export *exp) | |
3015 | { | |
3016 | struct obd_device *obd = class_exp2obd(exp); | |
d7e09d03 PT |
3017 | int rc; |
3018 | ||
d7e09d03 PT |
3019 | rc = client_disconnect_export(exp); |
3020 | /** | |
3021 | * Initially we put del_shrink_grant before disconnect_export, but it | |
3022 | * causes the following problem if setup (connect) and cleanup | |
3023 | * (disconnect) are tangled together. | |
3024 | * connect p1 disconnect p2 | |
3025 | * ptlrpc_connect_import | |
3026 | * ............... class_manual_cleanup | |
3027 | * osc_disconnect | |
3028 | * del_shrink_grant | |
3029 | * ptlrpc_connect_interrupt | |
3030 | * init_grant_shrink | |
3031 | * add this client to shrink list | |
3032 | * cleanup_osc | |
3033 | * Bang! pinger trigger the shrink. | |
3034 | * So the osc should be disconnected from the shrink list, after we | |
3035 | * are sure the import has been destroyed. BUG18662 | |
3036 | */ | |
7f1ae4c0 | 3037 | if (!obd->u.cli.cl_import) |
d7e09d03 PT |
3038 | osc_del_shrink_grant(&obd->u.cli); |
3039 | return rc; | |
3040 | } | |
3041 | ||
3042 | static int osc_import_event(struct obd_device *obd, | |
3043 | struct obd_import *imp, | |
3044 | enum obd_import_event event) | |
3045 | { | |
3046 | struct client_obd *cli; | |
3047 | int rc = 0; | |
3048 | ||
d7e09d03 PT |
3049 | LASSERT(imp->imp_obd == obd); |
3050 | ||
3051 | switch (event) { | |
3052 | case IMP_EVENT_DISCON: { | |
3053 | cli = &obd->u.cli; | |
7d53d8f4 | 3054 | spin_lock(&cli->cl_loi_list_lock); |
d7e09d03 PT |
3055 | cli->cl_avail_grant = 0; |
3056 | cli->cl_lost_grant = 0; | |
7d53d8f4 | 3057 | spin_unlock(&cli->cl_loi_list_lock); |
d7e09d03 PT |
3058 | break; |
3059 | } | |
3060 | case IMP_EVENT_INACTIVE: { | |
3061 | rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL); | |
3062 | break; | |
3063 | } | |
3064 | case IMP_EVENT_INVALIDATE: { | |
3065 | struct ldlm_namespace *ns = obd->obd_namespace; | |
29ac6840 CH |
3066 | struct lu_env *env; |
3067 | int refcheck; | |
d7e09d03 PT |
3068 | |
3069 | env = cl_env_get(&refcheck); | |
3070 | if (!IS_ERR(env)) { | |
3071 | /* Reset grants */ | |
3072 | cli = &obd->u.cli; | |
3073 | /* all pages go to failing rpcs due to the invalid | |
30aa9c52 OD |
3074 | * import |
3075 | */ | |
c5c4c6fa | 3076 | osc_io_unplug(env, cli, NULL); |
d7e09d03 PT |
3077 | |
3078 | ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY); | |
3079 | cl_env_put(env, &refcheck); | |
da5ecb4d | 3080 | } else { |
d7e09d03 | 3081 | rc = PTR_ERR(env); |
da5ecb4d | 3082 | } |
d7e09d03 PT |
3083 | break; |
3084 | } | |
3085 | case IMP_EVENT_ACTIVE: { | |
3086 | rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL); | |
3087 | break; | |
3088 | } | |
3089 | case IMP_EVENT_OCD: { | |
3090 | struct obd_connect_data *ocd = &imp->imp_connect_data; | |
3091 | ||
3092 | if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT) | |
3093 | osc_init_grant(&obd->u.cli, ocd); | |
3094 | ||
3095 | /* See bug 7198 */ | |
3096 | if (ocd->ocd_connect_flags & OBD_CONNECT_REQPORTAL) | |
b2952d62 | 3097 | imp->imp_client->cli_request_portal = OST_REQUEST_PORTAL; |
d7e09d03 PT |
3098 | |
3099 | rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL); | |
3100 | break; | |
3101 | } | |
3102 | case IMP_EVENT_DEACTIVATE: { | |
3103 | rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DEACTIVATE, NULL); | |
3104 | break; | |
3105 | } | |
3106 | case IMP_EVENT_ACTIVATE: { | |
3107 | rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVATE, NULL); | |
3108 | break; | |
3109 | } | |
3110 | default: | |
3111 | CERROR("Unknown import event %d\n", event); | |
3112 | LBUG(); | |
3113 | } | |
0a3bdb00 | 3114 | return rc; |
d7e09d03 PT |
3115 | } |
3116 | ||
3117 | /** | |
3118 | * Determine whether the lock can be canceled before replaying the lock | |
3119 | * during recovery, see bug16774 for detailed information. | |
3120 | * | |
3121 | * \retval zero the lock can't be canceled | |
3122 | * \retval other ok to cancel | |
3123 | */ | |
7d443334 | 3124 | static int osc_cancel_weight(struct ldlm_lock *lock) |
d7e09d03 | 3125 | { |
d7e09d03 | 3126 | /* |
7d443334 | 3127 | * Cancel all unused and granted extent lock. |
d7e09d03 PT |
3128 | */ |
3129 | if (lock->l_resource->lr_type == LDLM_EXTENT && | |
7d443334 JX |
3130 | lock->l_granted_mode == lock->l_req_mode && |
3131 | osc_ldlm_weigh_ast(lock) == 0) | |
0a3bdb00 | 3132 | return 1; |
d7e09d03 | 3133 | |
0a3bdb00 | 3134 | return 0; |
d7e09d03 PT |
3135 | } |
3136 | ||
3137 | static int brw_queue_work(const struct lu_env *env, void *data) | |
3138 | { | |
3139 | struct client_obd *cli = data; | |
3140 | ||
3141 | CDEBUG(D_CACHE, "Run writeback work for client obd %p.\n", cli); | |
3142 | ||
c5c4c6fa | 3143 | osc_io_unplug(env, cli, NULL); |
0a3bdb00 | 3144 | return 0; |
d7e09d03 PT |
3145 | } |
3146 | ||
3147 | int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg) | |
3148 | { | |
ea7893bb | 3149 | struct lprocfs_static_vars lvars = { NULL }; |
29ac6840 CH |
3150 | struct client_obd *cli = &obd->u.cli; |
3151 | void *handler; | |
3152 | int rc; | |
aefd9d71 LX |
3153 | int adding; |
3154 | int added; | |
3155 | int req_count; | |
d7e09d03 PT |
3156 | |
3157 | rc = ptlrpcd_addref(); | |
3158 | if (rc) | |
0a3bdb00 | 3159 | return rc; |
d7e09d03 PT |
3160 | |
3161 | rc = client_obd_setup(obd, lcfg); | |
3162 | if (rc) | |
26c4ea46 | 3163 | goto out_ptlrpcd; |
d7e09d03 PT |
3164 | |
3165 | handler = ptlrpcd_alloc_work(cli->cl_import, brw_queue_work, cli); | |
26c4ea46 TJ |
3166 | if (IS_ERR(handler)) { |
3167 | rc = PTR_ERR(handler); | |
3168 | goto out_client_setup; | |
3169 | } | |
d7e09d03 PT |
3170 | cli->cl_writeback_work = handler; |
3171 | ||
2579d8d0 JX |
3172 | handler = ptlrpcd_alloc_work(cli->cl_import, lru_queue_work, cli); |
3173 | if (IS_ERR(handler)) { | |
3174 | rc = PTR_ERR(handler); | |
3175 | goto out_ptlrpcd_work; | |
3176 | } | |
3177 | ||
3178 | cli->cl_lru_work = handler; | |
3179 | ||
d7e09d03 PT |
3180 | rc = osc_quota_setup(obd); |
3181 | if (rc) | |
26c4ea46 | 3182 | goto out_ptlrpcd_work; |
d7e09d03 PT |
3183 | |
3184 | cli->cl_grant_shrink_interval = GRANT_SHRINK_INTERVAL; | |
3185 | lprocfs_osc_init_vars(&lvars); | |
9b801302 | 3186 | if (lprocfs_obd_setup(obd, lvars.obd_vars, lvars.sysfs_vars) == 0) { |
d7e09d03 PT |
3187 | lproc_osc_attach_seqstat(obd); |
3188 | sptlrpc_lprocfs_cliobd_attach(obd); | |
3189 | ptlrpc_lprocfs_register_obd(obd); | |
3190 | } | |
3191 | ||
aefd9d71 LX |
3192 | /* |
3193 | * We try to control the total number of requests with a upper limit | |
3194 | * osc_reqpool_maxreqcount. There might be some race which will cause | |
3195 | * over-limit allocation, but it is fine. | |
3196 | */ | |
3197 | req_count = atomic_read(&osc_pool_req_count); | |
3198 | if (req_count < osc_reqpool_maxreqcount) { | |
3199 | adding = cli->cl_max_rpcs_in_flight + 2; | |
3200 | if (req_count + adding > osc_reqpool_maxreqcount) | |
3201 | adding = osc_reqpool_maxreqcount - req_count; | |
3202 | ||
3203 | added = ptlrpc_add_rqs_to_pool(osc_rq_pool, adding); | |
3204 | atomic_add(added, &osc_pool_req_count); | |
3205 | } | |
d7e09d03 PT |
3206 | |
3207 | INIT_LIST_HEAD(&cli->cl_grant_shrink_list); | |
7d443334 | 3208 | ns_register_cancel(obd->obd_namespace, osc_cancel_weight); |
0a3bdb00 | 3209 | return rc; |
d7e09d03 PT |
3210 | |
3211 | out_ptlrpcd_work: | |
2579d8d0 JX |
3212 | if (cli->cl_writeback_work) { |
3213 | ptlrpcd_destroy_work(cli->cl_writeback_work); | |
3214 | cli->cl_writeback_work = NULL; | |
3215 | } | |
3216 | if (cli->cl_lru_work) { | |
3217 | ptlrpcd_destroy_work(cli->cl_lru_work); | |
3218 | cli->cl_lru_work = NULL; | |
3219 | } | |
d7e09d03 PT |
3220 | out_client_setup: |
3221 | client_obd_cleanup(obd); | |
3222 | out_ptlrpcd: | |
3223 | ptlrpcd_decref(); | |
0a3bdb00 | 3224 | return rc; |
d7e09d03 PT |
3225 | } |
3226 | ||
3227 | static int osc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage) | |
3228 | { | |
d7e09d03 PT |
3229 | switch (stage) { |
3230 | case OBD_CLEANUP_EARLY: { | |
3231 | struct obd_import *imp; | |
50ffcb7e | 3232 | |
d7e09d03 PT |
3233 | imp = obd->u.cli.cl_import; |
3234 | CDEBUG(D_HA, "Deactivating import %s\n", obd->obd_name); | |
3235 | /* ptlrpc_abort_inflight to stop an mds_lov_synchronize */ | |
3236 | ptlrpc_deactivate_import(imp); | |
3237 | spin_lock(&imp->imp_lock); | |
3238 | imp->imp_pingable = 0; | |
3239 | spin_unlock(&imp->imp_lock); | |
3240 | break; | |
3241 | } | |
3242 | case OBD_CLEANUP_EXPORTS: { | |
3243 | struct client_obd *cli = &obd->u.cli; | |
3244 | /* LU-464 | |
3245 | * for echo client, export may be on zombie list, wait for | |
3246 | * zombie thread to cull it, because cli.cl_import will be | |
3247 | * cleared in client_disconnect_export(): | |
3248 | * class_export_destroy() -> obd_cleanup() -> | |
3249 | * echo_device_free() -> echo_client_cleanup() -> | |
3250 | * obd_disconnect() -> osc_disconnect() -> | |
3251 | * client_disconnect_export() | |
3252 | */ | |
3253 | obd_zombie_barrier(); | |
3254 | if (cli->cl_writeback_work) { | |
3255 | ptlrpcd_destroy_work(cli->cl_writeback_work); | |
3256 | cli->cl_writeback_work = NULL; | |
3257 | } | |
2579d8d0 JX |
3258 | if (cli->cl_lru_work) { |
3259 | ptlrpcd_destroy_work(cli->cl_lru_work); | |
3260 | cli->cl_lru_work = NULL; | |
3261 | } | |
d7e09d03 PT |
3262 | obd_cleanup_client_import(obd); |
3263 | ptlrpc_lprocfs_unregister_obd(obd); | |
3264 | lprocfs_obd_cleanup(obd); | |
d7e09d03 PT |
3265 | break; |
3266 | } | |
3267 | } | |
41f8d410 | 3268 | return 0; |
d7e09d03 PT |
3269 | } |
3270 | ||
f51e5a20 | 3271 | static int osc_cleanup(struct obd_device *obd) |
d7e09d03 PT |
3272 | { |
3273 | struct client_obd *cli = &obd->u.cli; | |
3274 | int rc; | |
3275 | ||
d7e09d03 | 3276 | /* lru cleanup */ |
7f1ae4c0 | 3277 | if (cli->cl_cache) { |
d7e09d03 PT |
3278 | LASSERT(atomic_read(&cli->cl_cache->ccc_users) > 0); |
3279 | spin_lock(&cli->cl_cache->ccc_lru_lock); | |
3280 | list_del_init(&cli->cl_lru_osc); | |
3281 | spin_unlock(&cli->cl_cache->ccc_lru_lock); | |
3282 | cli->cl_lru_left = NULL; | |
1b02bde3 | 3283 | cl_cache_decref(cli->cl_cache); |
d7e09d03 PT |
3284 | cli->cl_cache = NULL; |
3285 | } | |
3286 | ||
3287 | /* free memory of osc quota cache */ | |
3288 | osc_quota_cleanup(obd); | |
3289 | ||
3290 | rc = client_obd_cleanup(obd); | |
3291 | ||
3292 | ptlrpcd_decref(); | |
0a3bdb00 | 3293 | return rc; |
d7e09d03 PT |
3294 | } |
3295 | ||
3296 | int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg) | |
3297 | { | |
ea7893bb | 3298 | struct lprocfs_static_vars lvars = { NULL }; |
d7e09d03 PT |
3299 | int rc = 0; |
3300 | ||
3301 | lprocfs_osc_init_vars(&lvars); | |
3302 | ||
3303 | switch (lcfg->lcfg_command) { | |
3304 | default: | |
3305 | rc = class_process_proc_param(PARAM_OSC, lvars.obd_vars, | |
3306 | lcfg, obd); | |
3307 | if (rc > 0) | |
3308 | rc = 0; | |
3309 | break; | |
3310 | } | |
3311 | ||
fbe7c6c7 | 3312 | return rc; |
d7e09d03 PT |
3313 | } |
3314 | ||
21aef7d9 | 3315 | static int osc_process_config(struct obd_device *obd, u32 len, void *buf) |
d7e09d03 PT |
3316 | { |
3317 | return osc_process_config_base(obd, buf); | |
3318 | } | |
3319 | ||
f51e5a20 | 3320 | static struct obd_ops osc_obd_ops = { |
a13b1f32 DC |
3321 | .owner = THIS_MODULE, |
3322 | .setup = osc_setup, | |
3323 | .precleanup = osc_precleanup, | |
3324 | .cleanup = osc_cleanup, | |
3325 | .add_conn = client_import_add_conn, | |
3326 | .del_conn = client_import_del_conn, | |
3327 | .connect = client_connect_import, | |
3328 | .reconnect = osc_reconnect, | |
3329 | .disconnect = osc_disconnect, | |
3330 | .statfs = osc_statfs, | |
3331 | .statfs_async = osc_statfs_async, | |
3332 | .packmd = osc_packmd, | |
3333 | .unpackmd = osc_unpackmd, | |
3334 | .create = osc_create, | |
3335 | .destroy = osc_destroy, | |
3336 | .getattr = osc_getattr, | |
3337 | .getattr_async = osc_getattr_async, | |
3338 | .setattr = osc_setattr, | |
3339 | .setattr_async = osc_setattr_async, | |
a13b1f32 DC |
3340 | .iocontrol = osc_iocontrol, |
3341 | .get_info = osc_get_info, | |
3342 | .set_info_async = osc_set_info_async, | |
3343 | .import_event = osc_import_event, | |
3344 | .process_config = osc_process_config, | |
3345 | .quotactl = osc_quotactl, | |
3346 | .quotacheck = osc_quotacheck, | |
d7e09d03 PT |
3347 | }; |
3348 | ||
3349 | extern struct lu_kmem_descr osc_caches[]; | |
d7e09d03 PT |
3350 | extern struct lock_class_key osc_ast_guard_class; |
3351 | ||
b47ea4bb | 3352 | static int __init osc_init(void) |
d7e09d03 | 3353 | { |
ea7893bb | 3354 | struct lprocfs_static_vars lvars = { NULL }; |
aefd9d71 LX |
3355 | unsigned int reqpool_size; |
3356 | unsigned int reqsize; | |
d7e09d03 | 3357 | int rc; |
d7e09d03 PT |
3358 | |
3359 | /* print an address of _any_ initialized kernel symbol from this | |
3360 | * module, to allow debugging with gdb that doesn't support data | |
30aa9c52 OD |
3361 | * symbols from modules. |
3362 | */ | |
d7e09d03 PT |
3363 | CDEBUG(D_INFO, "Lustre OSC module (%p).\n", &osc_caches); |
3364 | ||
3365 | rc = lu_kmem_init(osc_caches); | |
a55e0f44 | 3366 | if (rc) |
0a3bdb00 | 3367 | return rc; |
d7e09d03 PT |
3368 | |
3369 | lprocfs_osc_init_vars(&lvars); | |
3370 | ||
2962b440 | 3371 | rc = class_register_type(&osc_obd_ops, NULL, |
d7e09d03 | 3372 | LUSTRE_OSC_NAME, &osc_device_type); |
aefd9d71 LX |
3373 | if (rc) |
3374 | goto out_kmem; | |
d7e09d03 | 3375 | |
aefd9d71 LX |
3376 | /* This is obviously too much memory, only prevent overflow here */ |
3377 | if (osc_reqpool_mem_max >= 1 << 12 || osc_reqpool_mem_max == 0) { | |
3378 | rc = -EINVAL; | |
3379 | goto out_type; | |
3380 | } | |
3381 | ||
3382 | reqpool_size = osc_reqpool_mem_max << 20; | |
3383 | ||
3384 | reqsize = 1; | |
3385 | while (reqsize < OST_MAXREQSIZE) | |
3386 | reqsize = reqsize << 1; | |
3387 | ||
3388 | /* | |
3389 | * We don't enlarge the request count in OSC pool according to | |
3390 | * cl_max_rpcs_in_flight. The allocation from the pool will only be | |
3391 | * tried after normal allocation failed. So a small OSC pool won't | |
3392 | * cause much performance degression in most of cases. | |
3393 | */ | |
3394 | osc_reqpool_maxreqcount = reqpool_size / reqsize; | |
3395 | ||
3396 | atomic_set(&osc_pool_req_count, 0); | |
3397 | osc_rq_pool = ptlrpc_init_rq_pool(0, OST_MAXREQSIZE, | |
3398 | ptlrpc_add_rqs_to_pool); | |
3399 | ||
3400 | if (osc_rq_pool) | |
3401 | return 0; | |
3402 | ||
3403 | rc = -ENOMEM; | |
3404 | ||
3405 | out_type: | |
3406 | class_unregister_type(LUSTRE_OSC_NAME); | |
3407 | out_kmem: | |
3408 | lu_kmem_fini(osc_caches); | |
0a3bdb00 | 3409 | return rc; |
d7e09d03 PT |
3410 | } |
3411 | ||
3412 | static void /*__exit*/ osc_exit(void) | |
3413 | { | |
3414 | class_unregister_type(LUSTRE_OSC_NAME); | |
3415 | lu_kmem_fini(osc_caches); | |
aefd9d71 | 3416 | ptlrpc_free_rq_pool(osc_rq_pool); |
d7e09d03 PT |
3417 | } |
3418 | ||
a0455471 | 3419 | MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>"); |
d7e09d03 PT |
3420 | MODULE_DESCRIPTION("Lustre Object Storage Client (OSC)"); |
3421 | MODULE_LICENSE("GPL"); | |
6960736c | 3422 | MODULE_VERSION(LUSTRE_VERSION_STRING); |
d7e09d03 | 3423 | |
6960736c GKH |
3424 | module_init(osc_init); |
3425 | module_exit(osc_exit); |