4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.
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).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 021110-1307, USA
24 * Copyright (c) 2012, 2013, Intel Corporation.
25 * Use is subject to license terms.
27 * Author: Johann Lombardi <johann.lombardi@intel.com>
28 * Author: Niu Yawei <yawei.niu@intel.com>
31 #define DEBUG_SUBSYSTEM S_LQUOTA
33 #include <lustre_net.h>
34 #include <lustre_import.h>
35 #include <lustre_dlm.h>
36 #include <obd_class.h>
38 #include "qsd_internal.h"
40 struct qsd_async_args {
41 struct obd_export *aa_exp;
42 struct qsd_qtype_info *aa_qqi;
44 struct lquota_lvb *aa_lvb;
45 struct lustre_handle aa_lockh;
46 qsd_req_completion_t aa_completion;
50 * non-intent quota request interpret callback.
52 * \param env - the environment passed by the caller
53 * \param req - the non-intent quota request
54 * \param arg - qsd_async_args
55 * \param rc - request status
58 * \retval -ve - appropriate errors
60 static int qsd_dqacq_interpret(const struct lu_env *env,
61 struct ptlrpc_request *req, void *arg, int rc)
63 struct quota_body *rep_qbody = NULL, *req_qbody;
64 struct qsd_async_args *aa = (struct qsd_async_args *)arg;
67 req_qbody = req_capsule_client_get(&req->rq_pill, &RMF_QUOTA_BODY);
68 if (rc == 0 || rc == -EDQUOT || rc == -EINPROGRESS)
69 rep_qbody = req_capsule_server_get(&req->rq_pill,
71 aa->aa_completion(env, aa->aa_qqi, req_qbody, rep_qbody, &aa->aa_lockh,
72 NULL, aa->aa_arg, rc);
77 * Send non-intent quota request to master.
79 * \param env - the environment passed by the caller
80 * \param exp - is the export to use to send the acquire RPC
81 * \param qbody - quota body to be packed in request
82 * \param sync - synchronous or asynchronous
83 * \param completion - completion callback
84 * \param qqi - is the qsd_qtype_info structure to pass to the completion
86 * \param lqe - is the qid entry to be processed
89 * \retval -ve - appropriate errors
91 int qsd_send_dqacq(const struct lu_env *env, struct obd_export *exp,
92 struct quota_body *qbody, bool sync,
93 qsd_req_completion_t completion, struct qsd_qtype_info *qqi,
94 struct lustre_handle *lockh, struct lquota_entry *lqe)
96 struct ptlrpc_request *req;
97 struct quota_body *req_qbody;
98 struct qsd_async_args *aa;
104 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_QUOTA_DQACQ);
106 GOTO(out, rc = -ENOMEM);
108 req->rq_no_resend = req->rq_no_delay = 1;
109 req->rq_no_retry_einprogress = 1;
110 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, QUOTA_DQACQ);
112 ptlrpc_request_free(req);
116 req->rq_request_portal = MDS_READPAGE_PORTAL;
117 req_qbody = req_capsule_client_get(&req->rq_pill, &RMF_QUOTA_BODY);
120 ptlrpc_request_set_replen(req);
122 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
123 aa = ptlrpc_req_async_args(req);
126 aa->aa_arg = (void *)lqe;
127 aa->aa_completion = completion;
128 lustre_handle_copy(&aa->aa_lockh, lockh);
131 rc = ptlrpc_queue_wait(req);
132 rc = qsd_dqacq_interpret(env, req, aa, rc);
133 ptlrpc_req_finished(req);
135 req->rq_interpret_reply = qsd_dqacq_interpret;
136 ptlrpcd_add_req(req);
141 completion(env, qqi, qbody, NULL, lockh, NULL, lqe, rc);
146 * intent quota request interpret callback.
148 * \param env - the environment passed by the caller
149 * \param req - the intent quota request
150 * \param arg - qsd_async_args
151 * \param rc - request status
153 * \retval 0 - success
154 * \retval -ve - appropriate errors
156 static int qsd_intent_interpret(const struct lu_env *env,
157 struct ptlrpc_request *req, void *arg, int rc)
159 struct lustre_handle *lockh;
160 struct quota_body *rep_qbody = NULL, *req_qbody;
161 struct ldlm_intent *lit;
162 struct qsd_async_args *aa = (struct qsd_async_args *)arg;
163 __u64 flags = LDLM_FL_HAS_INTENT;
167 lockh = &aa->aa_lockh;
168 req_qbody = req_capsule_client_get(&req->rq_pill, &RMF_QUOTA_BODY);
169 lit = req_capsule_client_get(&req->rq_pill, &RMF_LDLM_INTENT);
171 rc = ldlm_cli_enqueue_fini(aa->aa_exp, req, LDLM_PLAIN, 0, LCK_CR,
172 &flags, (void *)aa->aa_lvb,
173 sizeof(struct lquota_lvb), lockh, rc);
175 /* the lock has been destroyed, forget about the lock handle */
176 memset(lockh, 0, sizeof(*lockh));
178 if (rc == 0 || rc == -EDQUOT || rc == -EINPROGRESS)
179 rep_qbody = req_capsule_server_get(&req->rq_pill,
182 aa->aa_completion(env, aa->aa_qqi, req_qbody, rep_qbody, lockh,
183 aa->aa_lvb, aa->aa_arg, rc);
188 * Get intent per-ID lock or global-index lock from master.
190 * \param env - the environment passed by the caller
191 * \param exp - is the export to use to send the intent RPC
192 * \param qbody - quota body to be packed in request
193 * \param sync - synchronous or asynchronous (pre-acquire)
194 * \param it_op - IT_QUOTA_DQACQ or IT_QUOTA_CONN
195 * \param completion - completion callback
196 * \param qqi - is the qsd_qtype_info structure to pass to the completion
198 * \param lvb - is the lvb associated with the lock and returned by the
200 * \param arg - is an opaq argument passed to the completion callback
202 * \retval 0 - success
203 * \retval -ve - appropriate errors
205 int qsd_intent_lock(const struct lu_env *env, struct obd_export *exp,
206 struct quota_body *qbody, bool sync, int it_op,
207 qsd_req_completion_t completion, struct qsd_qtype_info *qqi,
208 struct lquota_lvb *lvb, void *arg)
210 struct qsd_thread_info *qti = qsd_info(env);
211 struct ptlrpc_request *req;
212 struct qsd_async_args *aa = NULL;
213 struct ldlm_intent *lit;
214 struct quota_body *req_qbody;
215 __u64 flags = LDLM_FL_HAS_INTENT;
219 LASSERT(exp != NULL);
220 LASSERT(!lustre_handle_is_used(&qbody->qb_lockh));
222 memset(&qti->qti_lockh, 0, sizeof(qti->qti_lockh));
224 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
225 &RQF_LDLM_INTENT_QUOTA);
227 GOTO(out, rc = -ENOMEM);
229 req->rq_no_retry_einprogress = 1;
230 rc = ldlm_prep_enqueue_req(exp, req, NULL, 0);
232 ptlrpc_request_free(req);
235 req->rq_request_portal = MDS_READPAGE_PORTAL;
237 lit = req_capsule_client_get(&req->rq_pill, &RMF_LDLM_INTENT);
238 lit->opc = (__u64)it_op;
240 req_qbody = req_capsule_client_get(&req->rq_pill, &RMF_QUOTA_BODY);
243 req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
245 ptlrpc_request_set_replen(req);
249 /* build resource name associated with global index */
250 fid_build_reg_res_name(&qbody->qb_fid, &qti->qti_resid);
252 /* copy einfo template and fill ei_cbdata with qqi pointer */
253 memcpy(&qti->qti_einfo, &qsd_glb_einfo, sizeof(qti->qti_einfo));
254 qti->qti_einfo.ei_cbdata = qqi;
256 /* don't cancel global lock on memory pressure */
257 flags |= LDLM_FL_NO_LRU;
260 /* build resource name associated for per-ID quota lock */
261 fid_build_quota_res_name(&qbody->qb_fid, &qbody->qb_id,
264 /* copy einfo template and fill ei_cbdata with lqe pointer */
265 memcpy(&qti->qti_einfo, &qsd_id_einfo, sizeof(qti->qti_einfo));
266 qti->qti_einfo.ei_cbdata = arg;
269 LASSERTF(0, "invalid it_op %d\n", it_op);
272 /* build lock enqueue request */
273 rc = ldlm_cli_enqueue(exp, &req, &qti->qti_einfo, &qti->qti_resid, NULL,
274 &flags, (void *)lvb, sizeof(*lvb), LVB_T_LQUOTA,
277 ptlrpc_req_finished(req);
281 /* grab reference on backend structure for the new lock */
284 /* grab reference on qqi for new lock */
287 struct ldlm_lock *lock;
289 lock = ldlm_handle2lock(&qti->qti_lockh);
291 ptlrpc_req_finished(req);
292 GOTO(out, rc = -ENOLCK);
294 lu_ref_add(&qqi->qqi_reference, "glb_lock", lock);
301 /* grab reference on lqe for new lock */
302 lqe_getref((struct lquota_entry *)arg);
303 /* all acquire/release request are sent with no_resend and
305 req->rq_no_resend = req->rq_no_delay = 1;
311 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
312 aa = ptlrpc_req_async_args(req);
317 aa->aa_completion = completion;
318 lustre_handle_copy(&aa->aa_lockh, &qti->qti_lockh);
321 /* send lock enqueue request and wait for completion */
322 rc = ptlrpc_queue_wait(req);
323 rc = qsd_intent_interpret(env, req, aa, rc);
324 ptlrpc_req_finished(req);
326 /* queue lock request and return */
327 req->rq_interpret_reply = qsd_intent_interpret;
328 ptlrpcd_add_req(req);
333 completion(env, qqi, qbody, NULL, &qti->qti_lockh, lvb, arg, rc);
338 * Fetch a global or slave index from the QMT.
340 * \param env - the environment passed by the caller
341 * \param exp - is the export to use to issue the OBD_IDX_READ RPC
342 * \param ii - is the index information to be packed in the request
343 * on success, the index information returned by the server
345 * \param npages - is the number of pages in the pages array
346 * \param pages - is an array of @npages pages
348 * \retval 0 - success
349 * \retval -ve - appropriate errors
351 int qsd_fetch_index(const struct lu_env *env, struct obd_export *exp,
352 struct idx_info *ii, unsigned int npages,
353 struct page **pages, bool *need_swab)
355 struct ptlrpc_request *req;
356 struct idx_info *req_ii;
357 struct ptlrpc_bulk_desc *desc;
363 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OBD_IDX_READ);
367 rc = ptlrpc_request_pack(req, LUSTRE_OBD_VERSION, OBD_IDX_READ);
369 ptlrpc_request_free(req);
373 req->rq_request_portal = MDS_READPAGE_PORTAL;
374 ptlrpc_at_set_req_timeout(req);
376 /* allocate bulk descriptor */
377 desc = ptlrpc_prep_bulk_imp(req, npages, 1,
378 PTLRPC_BULK_PUT_SINK | PTLRPC_BULK_BUF_KIOV,
380 &ptlrpc_bulk_kiov_pin_ops);
382 ptlrpc_request_free(req);
386 /* req now owns desc and will free it when it gets freed */
387 for (i = 0; i < npages; i++)
388 desc->bd_frag_ops->add_kiov_frag(desc, pages[i], 0,
391 /* pack index information in request */
392 req_ii = req_capsule_client_get(&req->rq_pill, &RMF_IDX_INFO);
395 ptlrpc_request_set_replen(req);
397 /* send request to master and wait for RPC to complete */
398 rc = ptlrpc_queue_wait(req);
402 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
403 req->rq_bulk->bd_nob_transferred);
407 /* sptlrpc_cli_unwrap_bulk_read() returns the number of bytes
411 req_ii = req_capsule_server_get(&req->rq_pill, &RMF_IDX_INFO);
414 *need_swab = ptlrpc_rep_need_swab(req);
418 ptlrpc_req_finished(req);