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, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #define DEBUG_SUBSYSTEM S_OSC
39 #include <libcfs/libcfs.h>
42 # include <liblustre.h>
45 #include <lustre_dlm.h>
46 #include <lustre_net.h>
47 #include <lustre/lustre_user.h>
48 #include <obd_cksum.h>
56 #include <lustre_ha.h>
57 #include <lprocfs_status.h>
58 #include <lustre_log.h>
59 #include <lustre_debug.h>
60 #include <lustre_param.h>
61 #include <lustre_fid.h>
62 #include "osc_internal.h"
63 #include "osc_cl_internal.h"
65 static void osc_release_ppga(struct brw_page **ppga, obd_count count);
66 static int brw_interpret(const struct lu_env *env,
67 struct ptlrpc_request *req, void *data, int rc);
68 int osc_cleanup(struct obd_device *obd);
70 /* Pack OSC object metadata for disk storage (LE byte order). */
71 static int osc_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
72 struct lov_stripe_md *lsm)
77 lmm_size = sizeof(**lmmp);
81 if (*lmmp != NULL && lsm == NULL) {
82 OBD_FREE(*lmmp, lmm_size);
85 } else if (unlikely(lsm != NULL && ostid_id(&lsm->lsm_oi) == 0)) {
90 OBD_ALLOC(*lmmp, lmm_size);
96 ostid_cpu_to_le(&lsm->lsm_oi, &(*lmmp)->lmm_oi);
101 /* Unpack OSC object metadata from disk storage (LE byte order). */
102 static int osc_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
103 struct lov_mds_md *lmm, int lmm_bytes)
106 struct obd_import *imp = class_exp2cliimp(exp);
110 if (lmm_bytes < sizeof(*lmm)) {
111 CERROR("%s: lov_mds_md too small: %d, need %d\n",
112 exp->exp_obd->obd_name, lmm_bytes,
116 /* XXX LOV_MAGIC etc check? */
118 if (unlikely(ostid_id(&lmm->lmm_oi) == 0)) {
119 CERROR("%s: zero lmm_object_id: rc = %d\n",
120 exp->exp_obd->obd_name, -EINVAL);
125 lsm_size = lov_stripe_md_size(1);
129 if (*lsmp != NULL && lmm == NULL) {
130 OBD_FREE((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
131 OBD_FREE(*lsmp, lsm_size);
137 OBD_ALLOC(*lsmp, lsm_size);
138 if (unlikely(*lsmp == NULL))
140 OBD_ALLOC((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
141 if (unlikely((*lsmp)->lsm_oinfo[0] == NULL)) {
142 OBD_FREE(*lsmp, lsm_size);
145 loi_init((*lsmp)->lsm_oinfo[0]);
146 } else if (unlikely(ostid_id(&(*lsmp)->lsm_oi) == 0)) {
151 /* XXX zero *lsmp? */
152 ostid_le_to_cpu(&lmm->lmm_oi, &(*lsmp)->lsm_oi);
155 (imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_MAXBYTES))
156 (*lsmp)->lsm_maxbytes = imp->imp_connect_data.ocd_maxbytes;
158 (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES;
163 static inline void osc_pack_capa(struct ptlrpc_request *req,
164 struct ost_body *body, void *capa)
166 struct obd_capa *oc = (struct obd_capa *)capa;
167 struct lustre_capa *c;
172 c = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1);
175 body->oa.o_valid |= OBD_MD_FLOSSCAPA;
176 DEBUG_CAPA(D_SEC, c, "pack");
179 static inline void osc_pack_req_body(struct ptlrpc_request *req,
180 struct obd_info *oinfo)
182 struct ost_body *body;
184 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
187 lustre_set_wire_obdo(&body->oa, oinfo->oi_oa);
188 osc_pack_capa(req, body, oinfo->oi_capa);
191 static inline void osc_set_capa_size(struct ptlrpc_request *req,
192 const struct req_msg_field *field,
196 req_capsule_set_size(&req->rq_pill, field, RCL_CLIENT, 0);
198 /* it is already calculated as sizeof struct obd_capa */
202 static int osc_getattr_interpret(const struct lu_env *env,
203 struct ptlrpc_request *req,
204 struct osc_async_args *aa, int rc)
206 struct ost_body *body;
212 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
214 CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
215 lustre_get_wire_obdo(aa->aa_oi->oi_oa, &body->oa);
217 /* This should really be sent by the OST */
218 aa->aa_oi->oi_oa->o_blksize = DT_MAX_BRW_SIZE;
219 aa->aa_oi->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
221 CDEBUG(D_INFO, "can't unpack ost_body\n");
223 aa->aa_oi->oi_oa->o_valid = 0;
226 rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
230 static int osc_getattr_async(struct obd_export *exp, struct obd_info *oinfo,
231 struct ptlrpc_request_set *set)
233 struct ptlrpc_request *req;
234 struct osc_async_args *aa;
238 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
242 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
243 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
245 ptlrpc_request_free(req);
249 osc_pack_req_body(req, oinfo);
251 ptlrpc_request_set_replen(req);
252 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_getattr_interpret;
254 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
255 aa = ptlrpc_req_async_args(req);
258 ptlrpc_set_add_req(set, req);
262 static int osc_getattr(const struct lu_env *env, struct obd_export *exp,
263 struct obd_info *oinfo)
265 struct ptlrpc_request *req;
266 struct ost_body *body;
270 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
274 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
275 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
277 ptlrpc_request_free(req);
281 osc_pack_req_body(req, oinfo);
283 ptlrpc_request_set_replen(req);
285 rc = ptlrpc_queue_wait(req);
289 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
291 GOTO(out, rc = -EPROTO);
293 CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
294 lustre_get_wire_obdo(oinfo->oi_oa, &body->oa);
296 oinfo->oi_oa->o_blksize = cli_brw_size(exp->exp_obd);
297 oinfo->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
301 ptlrpc_req_finished(req);
305 static int osc_setattr(const struct lu_env *env, struct obd_export *exp,
306 struct obd_info *oinfo, struct obd_trans_info *oti)
308 struct ptlrpc_request *req;
309 struct ost_body *body;
313 LASSERT(oinfo->oi_oa->o_valid & OBD_MD_FLGROUP);
315 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR);
319 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
320 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR);
322 ptlrpc_request_free(req);
326 osc_pack_req_body(req, oinfo);
328 ptlrpc_request_set_replen(req);
330 rc = ptlrpc_queue_wait(req);
334 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
336 GOTO(out, rc = -EPROTO);
338 lustre_get_wire_obdo(oinfo->oi_oa, &body->oa);
342 ptlrpc_req_finished(req);
346 static int osc_setattr_interpret(const struct lu_env *env,
347 struct ptlrpc_request *req,
348 struct osc_setattr_args *sa, int rc)
350 struct ost_body *body;
356 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
358 GOTO(out, rc = -EPROTO);
360 lustre_get_wire_obdo(sa->sa_oa, &body->oa);
362 rc = sa->sa_upcall(sa->sa_cookie, rc);
366 int osc_setattr_async_base(struct obd_export *exp, struct obd_info *oinfo,
367 struct obd_trans_info *oti,
368 obd_enqueue_update_f upcall, void *cookie,
369 struct ptlrpc_request_set *rqset)
371 struct ptlrpc_request *req;
372 struct osc_setattr_args *sa;
376 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR);
380 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
381 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR);
383 ptlrpc_request_free(req);
387 if (oti && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
388 oinfo->oi_oa->o_lcookie = *oti->oti_logcookies;
390 osc_pack_req_body(req, oinfo);
392 ptlrpc_request_set_replen(req);
394 /* do mds to ost setattr asynchronously */
396 /* Do not wait for response. */
397 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
399 req->rq_interpret_reply =
400 (ptlrpc_interpterer_t)osc_setattr_interpret;
402 CLASSERT (sizeof(*sa) <= sizeof(req->rq_async_args));
403 sa = ptlrpc_req_async_args(req);
404 sa->sa_oa = oinfo->oi_oa;
405 sa->sa_upcall = upcall;
406 sa->sa_cookie = cookie;
408 if (rqset == PTLRPCD_SET)
409 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
411 ptlrpc_set_add_req(rqset, req);
417 static int osc_setattr_async(struct obd_export *exp, struct obd_info *oinfo,
418 struct obd_trans_info *oti,
419 struct ptlrpc_request_set *rqset)
421 return osc_setattr_async_base(exp, oinfo, oti,
422 oinfo->oi_cb_up, oinfo, rqset);
425 int osc_real_create(struct obd_export *exp, struct obdo *oa,
426 struct lov_stripe_md **ea, struct obd_trans_info *oti)
428 struct ptlrpc_request *req;
429 struct ost_body *body;
430 struct lov_stripe_md *lsm;
439 rc = obd_alloc_memmd(exp, &lsm);
444 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_CREATE);
446 GOTO(out, rc = -ENOMEM);
448 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_CREATE);
450 ptlrpc_request_free(req);
454 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
456 lustre_set_wire_obdo(&body->oa, oa);
458 ptlrpc_request_set_replen(req);
460 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
461 oa->o_flags == OBD_FL_DELORPHAN) {
463 "delorphan from OST integration");
464 /* Don't resend the delorphan req */
465 req->rq_no_resend = req->rq_no_delay = 1;
468 rc = ptlrpc_queue_wait(req);
472 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
474 GOTO(out_req, rc = -EPROTO);
476 lustre_get_wire_obdo(oa, &body->oa);
478 oa->o_blksize = cli_brw_size(exp->exp_obd);
479 oa->o_valid |= OBD_MD_FLBLKSZ;
481 /* XXX LOV STACKING: the lsm that is passed to us from LOV does not
482 * have valid lsm_oinfo data structs, so don't go touching that.
483 * This needs to be fixed in a big way.
485 lsm->lsm_oi = oa->o_oi;
489 oti->oti_transno = lustre_msg_get_transno(req->rq_repmsg);
491 if (oa->o_valid & OBD_MD_FLCOOKIE) {
492 if (!oti->oti_logcookies)
493 oti_alloc_cookies(oti, 1);
494 *oti->oti_logcookies = oa->o_lcookie;
498 CDEBUG(D_HA, "transno: "LPD64"\n",
499 lustre_msg_get_transno(req->rq_repmsg));
501 ptlrpc_req_finished(req);
504 obd_free_memmd(exp, &lsm);
508 int osc_punch_base(struct obd_export *exp, struct obd_info *oinfo,
509 obd_enqueue_update_f upcall, void *cookie,
510 struct ptlrpc_request_set *rqset)
512 struct ptlrpc_request *req;
513 struct osc_setattr_args *sa;
514 struct ost_body *body;
518 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_PUNCH);
522 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
523 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_PUNCH);
525 ptlrpc_request_free(req);
528 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
529 ptlrpc_at_set_req_timeout(req);
531 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
533 lustre_set_wire_obdo(&body->oa, oinfo->oi_oa);
534 osc_pack_capa(req, body, oinfo->oi_capa);
536 ptlrpc_request_set_replen(req);
538 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_setattr_interpret;
539 CLASSERT (sizeof(*sa) <= sizeof(req->rq_async_args));
540 sa = ptlrpc_req_async_args(req);
541 sa->sa_oa = oinfo->oi_oa;
542 sa->sa_upcall = upcall;
543 sa->sa_cookie = cookie;
544 if (rqset == PTLRPCD_SET)
545 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
547 ptlrpc_set_add_req(rqset, req);
552 static int osc_punch(const struct lu_env *env, struct obd_export *exp,
553 struct obd_info *oinfo, struct obd_trans_info *oti,
554 struct ptlrpc_request_set *rqset)
556 oinfo->oi_oa->o_size = oinfo->oi_policy.l_extent.start;
557 oinfo->oi_oa->o_blocks = oinfo->oi_policy.l_extent.end;
558 oinfo->oi_oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
559 return osc_punch_base(exp, oinfo,
560 oinfo->oi_cb_up, oinfo, rqset);
563 static int osc_sync_interpret(const struct lu_env *env,
564 struct ptlrpc_request *req,
567 struct osc_fsync_args *fa = arg;
568 struct ost_body *body;
574 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
576 CERROR ("can't unpack ost_body\n");
577 GOTO(out, rc = -EPROTO);
580 *fa->fa_oi->oi_oa = body->oa;
582 rc = fa->fa_upcall(fa->fa_cookie, rc);
586 int osc_sync_base(struct obd_export *exp, struct obd_info *oinfo,
587 obd_enqueue_update_f upcall, void *cookie,
588 struct ptlrpc_request_set *rqset)
590 struct ptlrpc_request *req;
591 struct ost_body *body;
592 struct osc_fsync_args *fa;
596 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SYNC);
600 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
601 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SYNC);
603 ptlrpc_request_free(req);
607 /* overload the size and blocks fields in the oa with start/end */
608 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
610 lustre_set_wire_obdo(&body->oa, oinfo->oi_oa);
611 osc_pack_capa(req, body, oinfo->oi_capa);
613 ptlrpc_request_set_replen(req);
614 req->rq_interpret_reply = osc_sync_interpret;
616 CLASSERT(sizeof(*fa) <= sizeof(req->rq_async_args));
617 fa = ptlrpc_req_async_args(req);
619 fa->fa_upcall = upcall;
620 fa->fa_cookie = cookie;
622 if (rqset == PTLRPCD_SET)
623 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
625 ptlrpc_set_add_req(rqset, req);
630 static int osc_sync(const struct lu_env *env, struct obd_export *exp,
631 struct obd_info *oinfo, obd_size start, obd_size end,
632 struct ptlrpc_request_set *set)
637 CDEBUG(D_INFO, "oa NULL\n");
641 oinfo->oi_oa->o_size = start;
642 oinfo->oi_oa->o_blocks = end;
643 oinfo->oi_oa->o_valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS);
645 RETURN(osc_sync_base(exp, oinfo, oinfo->oi_cb_up, oinfo, set));
648 /* Find and cancel locally locks matched by @mode in the resource found by
649 * @objid. Found locks are added into @cancel list. Returns the amount of
650 * locks added to @cancels list. */
651 static int osc_resource_get_unused(struct obd_export *exp, struct obdo *oa,
653 ldlm_mode_t mode, int lock_flags)
655 struct ldlm_namespace *ns = exp->exp_obd->obd_namespace;
656 struct ldlm_res_id res_id;
657 struct ldlm_resource *res;
661 /* Return, i.e. cancel nothing, only if ELC is supported (flag in
662 * export) but disabled through procfs (flag in NS).
664 * This distinguishes from a case when ELC is not supported originally,
665 * when we still want to cancel locks in advance and just cancel them
666 * locally, without sending any RPC. */
667 if (exp_connect_cancelset(exp) && !ns_connect_cancelset(ns))
670 ostid_build_res_name(&oa->o_oi, &res_id);
671 res = ldlm_resource_get(ns, NULL, &res_id, 0, 0);
675 LDLM_RESOURCE_ADDREF(res);
676 count = ldlm_cancel_resource_local(res, cancels, NULL, mode,
677 lock_flags, 0, NULL);
678 LDLM_RESOURCE_DELREF(res);
679 ldlm_resource_putref(res);
683 static int osc_destroy_interpret(const struct lu_env *env,
684 struct ptlrpc_request *req, void *data,
687 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
689 cfs_atomic_dec(&cli->cl_destroy_in_flight);
690 cfs_waitq_signal(&cli->cl_destroy_waitq);
694 static int osc_can_send_destroy(struct client_obd *cli)
696 if (cfs_atomic_inc_return(&cli->cl_destroy_in_flight) <=
697 cli->cl_max_rpcs_in_flight) {
698 /* The destroy request can be sent */
701 if (cfs_atomic_dec_return(&cli->cl_destroy_in_flight) <
702 cli->cl_max_rpcs_in_flight) {
704 * The counter has been modified between the two atomic
707 cfs_waitq_signal(&cli->cl_destroy_waitq);
712 int osc_create(const struct lu_env *env, struct obd_export *exp,
713 struct obdo *oa, struct lov_stripe_md **ea,
714 struct obd_trans_info *oti)
721 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
723 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
724 oa->o_flags == OBD_FL_RECREATE_OBJS) {
725 RETURN(osc_real_create(exp, oa, ea, oti));
728 if (!fid_seq_is_mdt(ostid_seq(&oa->o_oi)))
729 RETURN(osc_real_create(exp, oa, ea, oti));
731 /* we should not get here anymore */
737 /* Destroy requests can be async always on the client, and we don't even really
738 * care about the return code since the client cannot do anything at all about
740 * When the MDS is unlinking a filename, it saves the file objects into a
741 * recovery llog, and these object records are cancelled when the OST reports
742 * they were destroyed and sync'd to disk (i.e. transaction committed).
743 * If the client dies, or the OST is down when the object should be destroyed,
744 * the records are not cancelled, and when the OST reconnects to the MDS next,
745 * it will retrieve the llog unlink logs and then sends the log cancellation
746 * cookies to the MDS after committing destroy transactions. */
747 static int osc_destroy(const struct lu_env *env, struct obd_export *exp,
748 struct obdo *oa, struct lov_stripe_md *ea,
749 struct obd_trans_info *oti, struct obd_export *md_export,
752 struct client_obd *cli = &exp->exp_obd->u.cli;
753 struct ptlrpc_request *req;
754 struct ost_body *body;
755 CFS_LIST_HEAD(cancels);
760 CDEBUG(D_INFO, "oa NULL\n");
764 count = osc_resource_get_unused(exp, oa, &cancels, LCK_PW,
765 LDLM_FL_DISCARD_DATA);
767 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_DESTROY);
769 ldlm_lock_list_put(&cancels, l_bl_ast, count);
773 osc_set_capa_size(req, &RMF_CAPA1, (struct obd_capa *)capa);
774 rc = ldlm_prep_elc_req(exp, req, LUSTRE_OST_VERSION, OST_DESTROY,
777 ptlrpc_request_free(req);
781 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
782 ptlrpc_at_set_req_timeout(req);
784 if (oti != NULL && oa->o_valid & OBD_MD_FLCOOKIE)
785 oa->o_lcookie = *oti->oti_logcookies;
786 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
788 lustre_set_wire_obdo(&body->oa, oa);
790 osc_pack_capa(req, body, (struct obd_capa *)capa);
791 ptlrpc_request_set_replen(req);
793 /* If osc_destory is for destroying the unlink orphan,
794 * sent from MDT to OST, which should not be blocked here,
795 * because the process might be triggered by ptlrpcd, and
796 * it is not good to block ptlrpcd thread (b=16006)*/
797 if (!(oa->o_flags & OBD_FL_DELORPHAN)) {
798 req->rq_interpret_reply = osc_destroy_interpret;
799 if (!osc_can_send_destroy(cli)) {
800 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP,
804 * Wait until the number of on-going destroy RPCs drops
805 * under max_rpc_in_flight
807 l_wait_event_exclusive(cli->cl_destroy_waitq,
808 osc_can_send_destroy(cli), &lwi);
812 /* Do not wait for response */
813 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
817 static void osc_announce_cached(struct client_obd *cli, struct obdo *oa,
820 obd_flag bits = OBD_MD_FLBLOCKS|OBD_MD_FLGRANT;
822 LASSERT(!(oa->o_valid & bits));
825 client_obd_list_lock(&cli->cl_loi_list_lock);
826 oa->o_dirty = cli->cl_dirty;
827 if (unlikely(cli->cl_dirty - cli->cl_dirty_transit >
828 cli->cl_dirty_max)) {
829 CERROR("dirty %lu - %lu > dirty_max %lu\n",
830 cli->cl_dirty, cli->cl_dirty_transit, cli->cl_dirty_max);
832 } else if (unlikely(cfs_atomic_read(&obd_unstable_pages) +
833 cfs_atomic_read(&obd_dirty_pages) -
834 cfs_atomic_read(&obd_dirty_transit_pages) >
835 (long)(obd_max_dirty_pages + 1))) {
836 /* The cfs_atomic_read() allowing the cfs_atomic_inc() are
837 * not covered by a lock thus they may safely race and trip
838 * this CERROR() unless we add in a small fudge factor (+1). */
839 CERROR("%s: dirty %d + %d - %d > system dirty_max %d\n",
840 cli->cl_import->imp_obd->obd_name,
841 cfs_atomic_read(&obd_unstable_pages),
842 cfs_atomic_read(&obd_dirty_pages),
843 cfs_atomic_read(&obd_dirty_transit_pages),
844 obd_max_dirty_pages);
846 } else if (unlikely(cli->cl_dirty_max - cli->cl_dirty > 0x7fffffff)) {
847 CERROR("dirty %lu - dirty_max %lu too big???\n",
848 cli->cl_dirty, cli->cl_dirty_max);
851 long max_in_flight = (cli->cl_max_pages_per_rpc <<
853 (cli->cl_max_rpcs_in_flight + 1);
854 oa->o_undirty = max(cli->cl_dirty_max, max_in_flight);
856 oa->o_grant = cli->cl_avail_grant + cli->cl_reserved_grant;
857 oa->o_dropped = cli->cl_lost_grant;
858 cli->cl_lost_grant = 0;
859 client_obd_list_unlock(&cli->cl_loi_list_lock);
860 CDEBUG(D_CACHE,"dirty: "LPU64" undirty: %u dropped %u grant: "LPU64"\n",
861 oa->o_dirty, oa->o_undirty, oa->o_dropped, oa->o_grant);
865 void osc_update_next_shrink(struct client_obd *cli)
867 cli->cl_next_shrink_grant =
868 cfs_time_shift(cli->cl_grant_shrink_interval);
869 CDEBUG(D_CACHE, "next time %ld to shrink grant \n",
870 cli->cl_next_shrink_grant);
873 static void __osc_update_grant(struct client_obd *cli, obd_size grant)
875 client_obd_list_lock(&cli->cl_loi_list_lock);
876 cli->cl_avail_grant += grant;
877 client_obd_list_unlock(&cli->cl_loi_list_lock);
880 static void osc_update_grant(struct client_obd *cli, struct ost_body *body)
882 if (body->oa.o_valid & OBD_MD_FLGRANT) {
883 CDEBUG(D_CACHE, "got "LPU64" extra grant\n", body->oa.o_grant);
884 __osc_update_grant(cli, body->oa.o_grant);
888 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
889 obd_count keylen, void *key, obd_count vallen,
890 void *val, struct ptlrpc_request_set *set);
892 static int osc_shrink_grant_interpret(const struct lu_env *env,
893 struct ptlrpc_request *req,
896 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
897 struct obdo *oa = ((struct osc_grant_args *)aa)->aa_oa;
898 struct ost_body *body;
901 __osc_update_grant(cli, oa->o_grant);
905 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
907 osc_update_grant(cli, body);
913 static void osc_shrink_grant_local(struct client_obd *cli, struct obdo *oa)
915 client_obd_list_lock(&cli->cl_loi_list_lock);
916 oa->o_grant = cli->cl_avail_grant / 4;
917 cli->cl_avail_grant -= oa->o_grant;
918 client_obd_list_unlock(&cli->cl_loi_list_lock);
919 if (!(oa->o_valid & OBD_MD_FLFLAGS)) {
920 oa->o_valid |= OBD_MD_FLFLAGS;
923 oa->o_flags |= OBD_FL_SHRINK_GRANT;
924 osc_update_next_shrink(cli);
927 /* Shrink the current grant, either from some large amount to enough for a
928 * full set of in-flight RPCs, or if we have already shrunk to that limit
929 * then to enough for a single RPC. This avoids keeping more grant than
930 * needed, and avoids shrinking the grant piecemeal. */
931 static int osc_shrink_grant(struct client_obd *cli)
933 __u64 target_bytes = (cli->cl_max_rpcs_in_flight + 1) *
934 (cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT);
936 client_obd_list_lock(&cli->cl_loi_list_lock);
937 if (cli->cl_avail_grant <= target_bytes)
938 target_bytes = cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT;
939 client_obd_list_unlock(&cli->cl_loi_list_lock);
941 return osc_shrink_grant_to_target(cli, target_bytes);
944 int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes)
947 struct ost_body *body;
950 client_obd_list_lock(&cli->cl_loi_list_lock);
951 /* Don't shrink if we are already above or below the desired limit
952 * We don't want to shrink below a single RPC, as that will negatively
953 * impact block allocation and long-term performance. */
954 if (target_bytes < cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT)
955 target_bytes = cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT;
957 if (target_bytes >= cli->cl_avail_grant) {
958 client_obd_list_unlock(&cli->cl_loi_list_lock);
961 client_obd_list_unlock(&cli->cl_loi_list_lock);
967 osc_announce_cached(cli, &body->oa, 0);
969 client_obd_list_lock(&cli->cl_loi_list_lock);
970 body->oa.o_grant = cli->cl_avail_grant - target_bytes;
971 cli->cl_avail_grant = target_bytes;
972 client_obd_list_unlock(&cli->cl_loi_list_lock);
973 if (!(body->oa.o_valid & OBD_MD_FLFLAGS)) {
974 body->oa.o_valid |= OBD_MD_FLFLAGS;
975 body->oa.o_flags = 0;
977 body->oa.o_flags |= OBD_FL_SHRINK_GRANT;
978 osc_update_next_shrink(cli);
980 rc = osc_set_info_async(NULL, cli->cl_import->imp_obd->obd_self_export,
981 sizeof(KEY_GRANT_SHRINK), KEY_GRANT_SHRINK,
982 sizeof(*body), body, NULL);
984 __osc_update_grant(cli, body->oa.o_grant);
989 static int osc_should_shrink_grant(struct client_obd *client)
991 cfs_time_t time = cfs_time_current();
992 cfs_time_t next_shrink = client->cl_next_shrink_grant;
994 if ((client->cl_import->imp_connect_data.ocd_connect_flags &
995 OBD_CONNECT_GRANT_SHRINK) == 0)
998 if (cfs_time_aftereq(time, next_shrink - 5 * CFS_TICK)) {
999 /* Get the current RPC size directly, instead of going via:
1000 * cli_brw_size(obd->u.cli.cl_import->imp_obd->obd_self_export)
1001 * Keep comment here so that it can be found by searching. */
1002 int brw_size = client->cl_max_pages_per_rpc << CFS_PAGE_SHIFT;
1004 if (client->cl_import->imp_state == LUSTRE_IMP_FULL &&
1005 client->cl_avail_grant > brw_size)
1008 osc_update_next_shrink(client);
1013 static int osc_grant_shrink_grant_cb(struct timeout_item *item, void *data)
1015 struct client_obd *client;
1017 cfs_list_for_each_entry(client, &item->ti_obd_list,
1018 cl_grant_shrink_list) {
1019 if (osc_should_shrink_grant(client))
1020 osc_shrink_grant(client);
1025 static int osc_add_shrink_grant(struct client_obd *client)
1029 rc = ptlrpc_add_timeout_client(client->cl_grant_shrink_interval,
1031 osc_grant_shrink_grant_cb, NULL,
1032 &client->cl_grant_shrink_list);
1034 CERROR("add grant client %s error %d\n",
1035 client->cl_import->imp_obd->obd_name, rc);
1038 CDEBUG(D_CACHE, "add grant client %s \n",
1039 client->cl_import->imp_obd->obd_name);
1040 osc_update_next_shrink(client);
1044 static int osc_del_shrink_grant(struct client_obd *client)
1046 return ptlrpc_del_timeout_client(&client->cl_grant_shrink_list,
1050 static void osc_init_grant(struct client_obd *cli, struct obd_connect_data *ocd)
1053 * ocd_grant is the total grant amount we're expect to hold: if we've
1054 * been evicted, it's the new avail_grant amount, cl_dirty will drop
1055 * to 0 as inflight RPCs fail out; otherwise, it's avail_grant + dirty.
1057 * race is tolerable here: if we're evicted, but imp_state already
1058 * left EVICTED state, then cl_dirty must be 0 already.
1060 client_obd_list_lock(&cli->cl_loi_list_lock);
1061 if (cli->cl_import->imp_state == LUSTRE_IMP_EVICTED)
1062 cli->cl_avail_grant = ocd->ocd_grant;
1064 cli->cl_avail_grant = ocd->ocd_grant - cli->cl_dirty;
1066 if (cli->cl_avail_grant < 0) {
1067 CWARN("%s: available grant < 0: avail/ocd/dirty %ld/%u/%ld\n",
1068 cli->cl_import->imp_obd->obd_name, cli->cl_avail_grant,
1069 ocd->ocd_grant, cli->cl_dirty);
1070 /* workaround for servers which do not have the patch from
1072 cli->cl_avail_grant = ocd->ocd_grant;
1075 /* determine the appropriate chunk size used by osc_extent. */
1076 cli->cl_chunkbits = max_t(int, CFS_PAGE_SHIFT, ocd->ocd_blocksize);
1077 client_obd_list_unlock(&cli->cl_loi_list_lock);
1079 CDEBUG(D_CACHE, "%s, setting cl_avail_grant: %ld cl_lost_grant: %ld."
1080 "chunk bits: %d.\n", cli->cl_import->imp_obd->obd_name,
1081 cli->cl_avail_grant, cli->cl_lost_grant, cli->cl_chunkbits);
1083 if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT_SHRINK &&
1084 cfs_list_empty(&cli->cl_grant_shrink_list))
1085 osc_add_shrink_grant(cli);
1088 /* We assume that the reason this OSC got a short read is because it read
1089 * beyond the end of a stripe file; i.e. lustre is reading a sparse file
1090 * via the LOV, and it _knows_ it's reading inside the file, it's just that
1091 * this stripe never got written at or beyond this stripe offset yet. */
1092 static void handle_short_read(int nob_read, obd_count page_count,
1093 struct brw_page **pga)
1098 /* skip bytes read OK */
1099 while (nob_read > 0) {
1100 LASSERT (page_count > 0);
1102 if (pga[i]->count > nob_read) {
1103 /* EOF inside this page */
1104 ptr = cfs_kmap(pga[i]->pg) +
1105 (pga[i]->off & ~CFS_PAGE_MASK);
1106 memset(ptr + nob_read, 0, pga[i]->count - nob_read);
1107 cfs_kunmap(pga[i]->pg);
1113 nob_read -= pga[i]->count;
1118 /* zero remaining pages */
1119 while (page_count-- > 0) {
1120 ptr = cfs_kmap(pga[i]->pg) + (pga[i]->off & ~CFS_PAGE_MASK);
1121 memset(ptr, 0, pga[i]->count);
1122 cfs_kunmap(pga[i]->pg);
1127 static int check_write_rcs(struct ptlrpc_request *req,
1128 int requested_nob, int niocount,
1129 obd_count page_count, struct brw_page **pga)
1134 remote_rcs = req_capsule_server_sized_get(&req->rq_pill, &RMF_RCS,
1135 sizeof(*remote_rcs) *
1137 if (remote_rcs == NULL) {
1138 CDEBUG(D_INFO, "Missing/short RC vector on BRW_WRITE reply\n");
1142 /* return error if any niobuf was in error */
1143 for (i = 0; i < niocount; i++) {
1144 if ((int)remote_rcs[i] < 0)
1145 return(remote_rcs[i]);
1147 if (remote_rcs[i] != 0) {
1148 CDEBUG(D_INFO, "rc[%d] invalid (%d) req %p\n",
1149 i, remote_rcs[i], req);
1154 if (req->rq_bulk->bd_nob_transferred != requested_nob) {
1155 CERROR("Unexpected # bytes transferred: %d (requested %d)\n",
1156 req->rq_bulk->bd_nob_transferred, requested_nob);
1163 static inline int can_merge_pages(struct brw_page *p1, struct brw_page *p2)
1165 if (p1->flag != p2->flag) {
1166 unsigned mask = ~(OBD_BRW_FROM_GRANT| OBD_BRW_NOCACHE|
1167 OBD_BRW_SYNC|OBD_BRW_ASYNC|OBD_BRW_NOQUOTA);
1169 /* warn if we try to combine flags that we don't know to be
1170 * safe to combine */
1171 if (unlikely((p1->flag & mask) != (p2->flag & mask))) {
1172 CWARN("Saw flags 0x%x and 0x%x in the same brw, please "
1173 "report this at http://bugs.whamcloud.com/\n",
1174 p1->flag, p2->flag);
1179 return (p1->off + p1->count == p2->off);
1182 static obd_count osc_checksum_bulk(int nob, obd_count pg_count,
1183 struct brw_page **pga, int opc,
1184 cksum_type_t cksum_type)
1188 struct cfs_crypto_hash_desc *hdesc;
1189 unsigned int bufsize;
1191 unsigned char cfs_alg = cksum_obd2cfs(cksum_type);
1193 LASSERT(pg_count > 0);
1195 hdesc = cfs_crypto_hash_init(cfs_alg, NULL, 0);
1196 if (IS_ERR(hdesc)) {
1197 CERROR("Unable to initialize checksum hash %s\n",
1198 cfs_crypto_hash_name(cfs_alg));
1199 return PTR_ERR(hdesc);
1202 while (nob > 0 && pg_count > 0) {
1203 int count = pga[i]->count > nob ? nob : pga[i]->count;
1205 /* corrupt the data before we compute the checksum, to
1206 * simulate an OST->client data error */
1207 if (i == 0 && opc == OST_READ &&
1208 OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_RECEIVE)) {
1209 unsigned char *ptr = cfs_kmap(pga[i]->pg);
1210 int off = pga[i]->off & ~CFS_PAGE_MASK;
1211 memcpy(ptr + off, "bad1", min(4, nob));
1212 cfs_kunmap(pga[i]->pg);
1214 cfs_crypto_hash_update_page(hdesc, pga[i]->pg,
1215 pga[i]->off & ~CFS_PAGE_MASK,
1217 LL_CDEBUG_PAGE(D_PAGE, pga[i]->pg, "off %d\n",
1218 (int)(pga[i]->off & ~CFS_PAGE_MASK));
1220 nob -= pga[i]->count;
1226 err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize);
1229 cfs_crypto_hash_final(hdesc, NULL, NULL);
1231 /* For sending we only compute the wrong checksum instead
1232 * of corrupting the data so it is still correct on a redo */
1233 if (opc == OST_WRITE && OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_SEND))
1239 static int osc_brw_prep_request(int cmd, struct client_obd *cli,struct obdo *oa,
1240 struct lov_stripe_md *lsm, obd_count page_count,
1241 struct brw_page **pga,
1242 struct ptlrpc_request **reqp,
1243 struct obd_capa *ocapa, int reserve,
1246 struct ptlrpc_request *req;
1247 struct ptlrpc_bulk_desc *desc;
1248 struct ost_body *body;
1249 struct obd_ioobj *ioobj;
1250 struct niobuf_remote *niobuf;
1251 int niocount, i, requested_nob, opc, rc;
1252 struct osc_brw_async_args *aa;
1253 struct req_capsule *pill;
1254 struct brw_page *pg_prev;
1257 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ))
1258 RETURN(-ENOMEM); /* Recoverable */
1259 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ2))
1260 RETURN(-EINVAL); /* Fatal */
1262 if ((cmd & OBD_BRW_WRITE) != 0) {
1264 req = ptlrpc_request_alloc_pool(cli->cl_import,
1265 cli->cl_import->imp_rq_pool,
1266 &RQF_OST_BRW_WRITE);
1269 req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_BRW_READ);
1274 for (niocount = i = 1; i < page_count; i++) {
1275 if (!can_merge_pages(pga[i - 1], pga[i]))
1279 pill = &req->rq_pill;
1280 req_capsule_set_size(pill, &RMF_OBD_IOOBJ, RCL_CLIENT,
1282 req_capsule_set_size(pill, &RMF_NIOBUF_REMOTE, RCL_CLIENT,
1283 niocount * sizeof(*niobuf));
1284 osc_set_capa_size(req, &RMF_CAPA1, ocapa);
1286 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, opc);
1288 ptlrpc_request_free(req);
1291 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
1292 ptlrpc_at_set_req_timeout(req);
1293 /* ask ptlrpc not to resend on EINPROGRESS since BRWs have their own
1295 req->rq_no_retry_einprogress = 1;
1297 desc = ptlrpc_prep_bulk_imp(req, page_count,
1298 cli->cl_import->imp_connect_data.ocd_brw_size >> LNET_MTU_BITS,
1299 opc == OST_WRITE ? BULK_GET_SOURCE : BULK_PUT_SINK,
1303 GOTO(out, rc = -ENOMEM);
1304 /* NB request now owns desc and will free it when it gets freed */
1306 body = req_capsule_client_get(pill, &RMF_OST_BODY);
1307 ioobj = req_capsule_client_get(pill, &RMF_OBD_IOOBJ);
1308 niobuf = req_capsule_client_get(pill, &RMF_NIOBUF_REMOTE);
1309 LASSERT(body != NULL && ioobj != NULL && niobuf != NULL);
1311 lustre_set_wire_obdo(&body->oa, oa);
1313 obdo_to_ioobj(oa, ioobj);
1314 ioobj->ioo_bufcnt = niocount;
1315 /* The high bits of ioo_max_brw tells server _maximum_ number of bulks
1316 * that might be send for this request. The actual number is decided
1317 * when the RPC is finally sent in ptlrpc_register_bulk(). It sends
1318 * "max - 1" for old client compatibility sending "0", and also so the
1319 * the actual maximum is a power-of-two number, not one less. LU-1431 */
1320 ioobj_max_brw_set(ioobj, desc->bd_md_max_brw);
1321 osc_pack_capa(req, body, ocapa);
1322 LASSERT(page_count > 0);
1324 for (requested_nob = i = 0; i < page_count; i++, niobuf++) {
1325 struct brw_page *pg = pga[i];
1326 int poff = pg->off & ~CFS_PAGE_MASK;
1328 LASSERT(pg->count > 0);
1329 /* make sure there is no gap in the middle of page array */
1330 LASSERTF(page_count == 1 ||
1331 (ergo(i == 0, poff + pg->count == CFS_PAGE_SIZE) &&
1332 ergo(i > 0 && i < page_count - 1,
1333 poff == 0 && pg->count == CFS_PAGE_SIZE) &&
1334 ergo(i == page_count - 1, poff == 0)),
1335 "i: %d/%d pg: %p off: "LPU64", count: %u\n",
1336 i, page_count, pg, pg->off, pg->count);
1338 LASSERTF(i == 0 || pg->off > pg_prev->off,
1339 "i %d p_c %u pg %p [pri %lu ind %lu] off "LPU64
1340 " prev_pg %p [pri %lu ind %lu] off "LPU64"\n",
1342 pg->pg, page_private(pg->pg), pg->pg->index, pg->off,
1343 pg_prev->pg, page_private(pg_prev->pg),
1344 pg_prev->pg->index, pg_prev->off);
1346 LASSERTF(i == 0 || pg->off > pg_prev->off,
1347 "i %d p_c %u\n", i, page_count);
1349 LASSERT((pga[0]->flag & OBD_BRW_SRVLOCK) ==
1350 (pg->flag & OBD_BRW_SRVLOCK));
1352 ptlrpc_prep_bulk_page_pin(desc, pg->pg, poff, pg->count);
1353 requested_nob += pg->count;
1355 if (i > 0 && can_merge_pages(pg_prev, pg)) {
1357 niobuf->len += pg->count;
1359 niobuf->offset = pg->off;
1360 niobuf->len = pg->count;
1361 niobuf->flags = pg->flag;
1366 LASSERTF((void *)(niobuf - niocount) ==
1367 req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE),
1368 "want %p - real %p\n", req_capsule_client_get(&req->rq_pill,
1369 &RMF_NIOBUF_REMOTE), (void *)(niobuf - niocount));
1371 osc_announce_cached(cli, &body->oa, opc == OST_WRITE ? requested_nob:0);
1373 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
1374 body->oa.o_valid |= OBD_MD_FLFLAGS;
1375 body->oa.o_flags = 0;
1377 body->oa.o_flags |= OBD_FL_RECOV_RESEND;
1380 if (osc_should_shrink_grant(cli))
1381 osc_shrink_grant_local(cli, &body->oa);
1383 /* size[REQ_REC_OFF] still sizeof (*body) */
1384 if (opc == OST_WRITE) {
1385 if (cli->cl_checksum &&
1386 !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
1387 /* store cl_cksum_type in a local variable since
1388 * it can be changed via lprocfs */
1389 cksum_type_t cksum_type = cli->cl_cksum_type;
1391 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
1392 oa->o_flags &= OBD_FL_LOCAL_MASK;
1393 body->oa.o_flags = 0;
1395 body->oa.o_flags |= cksum_type_pack(cksum_type);
1396 body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1397 body->oa.o_cksum = osc_checksum_bulk(requested_nob,
1401 CDEBUG(D_PAGE, "checksum at write origin: %x\n",
1403 /* save this in 'oa', too, for later checking */
1404 oa->o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1405 oa->o_flags |= cksum_type_pack(cksum_type);
1407 /* clear out the checksum flag, in case this is a
1408 * resend but cl_checksum is no longer set. b=11238 */
1409 oa->o_valid &= ~OBD_MD_FLCKSUM;
1411 oa->o_cksum = body->oa.o_cksum;
1412 /* 1 RC per niobuf */
1413 req_capsule_set_size(pill, &RMF_RCS, RCL_SERVER,
1414 sizeof(__u32) * niocount);
1416 if (cli->cl_checksum &&
1417 !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
1418 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0)
1419 body->oa.o_flags = 0;
1420 body->oa.o_flags |= cksum_type_pack(cli->cl_cksum_type);
1421 body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1424 ptlrpc_request_set_replen(req);
1426 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
1427 aa = ptlrpc_req_async_args(req);
1429 aa->aa_requested_nob = requested_nob;
1430 aa->aa_nio_count = niocount;
1431 aa->aa_page_count = page_count;
1435 CFS_INIT_LIST_HEAD(&aa->aa_oaps);
1436 if (ocapa && reserve)
1437 aa->aa_ocapa = capa_get(ocapa);
1443 ptlrpc_req_finished(req);
1447 static int check_write_checksum(struct obdo *oa, const lnet_process_id_t *peer,
1448 __u32 client_cksum, __u32 server_cksum, int nob,
1449 obd_count page_count, struct brw_page **pga,
1450 cksum_type_t client_cksum_type)
1454 cksum_type_t cksum_type;
1456 if (server_cksum == client_cksum) {
1457 CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
1461 cksum_type = cksum_type_unpack(oa->o_valid & OBD_MD_FLFLAGS ?
1463 new_cksum = osc_checksum_bulk(nob, page_count, pga, OST_WRITE,
1466 if (cksum_type != client_cksum_type)
1467 msg = "the server did not use the checksum type specified in "
1468 "the original request - likely a protocol problem";
1469 else if (new_cksum == server_cksum)
1470 msg = "changed on the client after we checksummed it - "
1471 "likely false positive due to mmap IO (bug 11742)";
1472 else if (new_cksum == client_cksum)
1473 msg = "changed in transit before arrival at OST";
1475 msg = "changed in transit AND doesn't match the original - "
1476 "likely false positive due to mmap IO (bug 11742)";
1478 LCONSOLE_ERROR_MSG(0x132, "BAD WRITE CHECKSUM: %s: from %s inode "DFID
1479 " object "DOSTID" extent ["LPU64"-"LPU64"]\n",
1480 msg, libcfs_nid2str(peer->nid),
1481 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : (__u64)0,
1482 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0,
1483 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0,
1484 POSTID(&oa->o_oi), pga[0]->off,
1485 pga[page_count-1]->off + pga[page_count-1]->count - 1);
1486 CERROR("original client csum %x (type %x), server csum %x (type %x), "
1487 "client csum now %x\n", client_cksum, client_cksum_type,
1488 server_cksum, cksum_type, new_cksum);
1492 /* Note rc enters this function as number of bytes transferred */
1493 static int osc_brw_fini_request(struct ptlrpc_request *req, int rc)
1495 struct osc_brw_async_args *aa = (void *)&req->rq_async_args;
1496 const lnet_process_id_t *peer =
1497 &req->rq_import->imp_connection->c_peer;
1498 struct client_obd *cli = aa->aa_cli;
1499 struct ost_body *body;
1500 __u32 client_cksum = 0;
1503 if (rc < 0 && rc != -EDQUOT) {
1504 DEBUG_REQ(D_INFO, req, "Failed request with rc = %d\n", rc);
1508 LASSERTF(req->rq_repmsg != NULL, "rc = %d\n", rc);
1509 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
1511 DEBUG_REQ(D_INFO, req, "Can't unpack body\n");
1515 /* set/clear over quota flag for a uid/gid */
1516 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE &&
1517 body->oa.o_valid & (OBD_MD_FLUSRQUOTA | OBD_MD_FLGRPQUOTA)) {
1518 unsigned int qid[MAXQUOTAS] = { body->oa.o_uid, body->oa.o_gid };
1520 CDEBUG(D_QUOTA, "setdq for [%u %u] with valid "LPX64", flags %x\n",
1521 body->oa.o_uid, body->oa.o_gid, body->oa.o_valid,
1523 osc_quota_setdq(cli, qid, body->oa.o_valid, body->oa.o_flags);
1526 osc_update_grant(cli, body);
1531 if (aa->aa_oa->o_valid & OBD_MD_FLCKSUM)
1532 client_cksum = aa->aa_oa->o_cksum; /* save for later */
1534 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) {
1536 CERROR("Unexpected +ve rc %d\n", rc);
1539 LASSERT(req->rq_bulk->bd_nob == aa->aa_requested_nob);
1541 if (sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk))
1544 if ((aa->aa_oa->o_valid & OBD_MD_FLCKSUM) && client_cksum &&
1545 check_write_checksum(&body->oa, peer, client_cksum,
1546 body->oa.o_cksum, aa->aa_requested_nob,
1547 aa->aa_page_count, aa->aa_ppga,
1548 cksum_type_unpack(aa->aa_oa->o_flags)))
1551 rc = check_write_rcs(req, aa->aa_requested_nob,aa->aa_nio_count,
1552 aa->aa_page_count, aa->aa_ppga);
1556 /* The rest of this function executes only for OST_READs */
1558 /* if unwrap_bulk failed, return -EAGAIN to retry */
1559 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk, rc);
1561 GOTO(out, rc = -EAGAIN);
1563 if (rc > aa->aa_requested_nob) {
1564 CERROR("Unexpected rc %d (%d requested)\n", rc,
1565 aa->aa_requested_nob);
1569 if (rc != req->rq_bulk->bd_nob_transferred) {
1570 CERROR ("Unexpected rc %d (%d transferred)\n",
1571 rc, req->rq_bulk->bd_nob_transferred);
1575 if (rc < aa->aa_requested_nob)
1576 handle_short_read(rc, aa->aa_page_count, aa->aa_ppga);
1578 if (body->oa.o_valid & OBD_MD_FLCKSUM) {
1579 static int cksum_counter;
1580 __u32 server_cksum = body->oa.o_cksum;
1583 cksum_type_t cksum_type;
1585 cksum_type = cksum_type_unpack(body->oa.o_valid &OBD_MD_FLFLAGS?
1586 body->oa.o_flags : 0);
1587 client_cksum = osc_checksum_bulk(rc, aa->aa_page_count,
1588 aa->aa_ppga, OST_READ,
1591 if (peer->nid == req->rq_bulk->bd_sender) {
1595 router = libcfs_nid2str(req->rq_bulk->bd_sender);
1598 if (server_cksum == ~0 && rc > 0) {
1599 CERROR("Protocol error: server %s set the 'checksum' "
1600 "bit, but didn't send a checksum. Not fatal, "
1601 "but please notify on http://bugs.whamcloud.com/\n",
1602 libcfs_nid2str(peer->nid));
1603 } else if (server_cksum != client_cksum) {
1604 LCONSOLE_ERROR_MSG(0x133, "%s: BAD READ CHECKSUM: from "
1605 "%s%s%s inode "DFID" object "DOSTID
1606 " extent ["LPU64"-"LPU64"]\n",
1607 req->rq_import->imp_obd->obd_name,
1608 libcfs_nid2str(peer->nid),
1610 body->oa.o_valid & OBD_MD_FLFID ?
1611 body->oa.o_parent_seq : (__u64)0,
1612 body->oa.o_valid & OBD_MD_FLFID ?
1613 body->oa.o_parent_oid : 0,
1614 body->oa.o_valid & OBD_MD_FLFID ?
1615 body->oa.o_parent_ver : 0,
1616 POSTID(&body->oa.o_oi),
1617 aa->aa_ppga[0]->off,
1618 aa->aa_ppga[aa->aa_page_count-1]->off +
1619 aa->aa_ppga[aa->aa_page_count-1]->count -
1621 CERROR("client %x, server %x, cksum_type %x\n",
1622 client_cksum, server_cksum, cksum_type);
1624 aa->aa_oa->o_cksum = client_cksum;
1628 CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
1631 } else if (unlikely(client_cksum)) {
1632 static int cksum_missed;
1635 if ((cksum_missed & (-cksum_missed)) == cksum_missed)
1636 CERROR("Checksum %u requested from %s but not sent\n",
1637 cksum_missed, libcfs_nid2str(peer->nid));
1643 lustre_get_wire_obdo(aa->aa_oa, &body->oa);
1648 static int osc_brw_internal(int cmd, struct obd_export *exp, struct obdo *oa,
1649 struct lov_stripe_md *lsm,
1650 obd_count page_count, struct brw_page **pga,
1651 struct obd_capa *ocapa)
1653 struct ptlrpc_request *req;
1656 int generation, resends = 0;
1657 struct l_wait_info lwi;
1661 cfs_waitq_init(&waitq);
1662 generation = exp->exp_obd->u.cli.cl_import->imp_generation;
1665 rc = osc_brw_prep_request(cmd, &exp->exp_obd->u.cli, oa, lsm,
1666 page_count, pga, &req, ocapa, 0, resends);
1671 req->rq_generation_set = 1;
1672 req->rq_import_generation = generation;
1673 req->rq_sent = cfs_time_current_sec() + resends;
1676 rc = ptlrpc_queue_wait(req);
1678 if (rc == -ETIMEDOUT && req->rq_resend) {
1679 DEBUG_REQ(D_HA, req, "BULK TIMEOUT");
1680 ptlrpc_req_finished(req);
1684 rc = osc_brw_fini_request(req, rc);
1686 ptlrpc_req_finished(req);
1687 /* When server return -EINPROGRESS, client should always retry
1688 * regardless of the number of times the bulk was resent already.*/
1689 if (osc_recoverable_error(rc)) {
1691 if (rc != -EINPROGRESS &&
1692 !client_should_resend(resends, &exp->exp_obd->u.cli)) {
1693 CERROR("%s: too many resend retries for object: "
1694 ""DOSTID", rc = %d.\n", exp->exp_obd->obd_name,
1695 POSTID(&oa->o_oi), rc);
1699 exp->exp_obd->u.cli.cl_import->imp_generation) {
1700 CDEBUG(D_HA, "%s: resend cross eviction for object: "
1701 ""DOSTID", rc = %d.\n", exp->exp_obd->obd_name,
1702 POSTID(&oa->o_oi), rc);
1706 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL,
1708 l_wait_event(waitq, 0, &lwi);
1713 if (rc == -EAGAIN || rc == -EINPROGRESS)
1718 static int osc_brw_redo_request(struct ptlrpc_request *request,
1719 struct osc_brw_async_args *aa, int rc)
1721 struct ptlrpc_request *new_req;
1722 struct osc_brw_async_args *new_aa;
1723 struct osc_async_page *oap;
1726 DEBUG_REQ(rc == -EINPROGRESS ? D_RPCTRACE : D_ERROR, request,
1727 "redo for recoverable error %d", rc);
1729 rc = osc_brw_prep_request(lustre_msg_get_opc(request->rq_reqmsg) ==
1730 OST_WRITE ? OBD_BRW_WRITE :OBD_BRW_READ,
1731 aa->aa_cli, aa->aa_oa,
1732 NULL /* lsm unused by osc currently */,
1733 aa->aa_page_count, aa->aa_ppga,
1734 &new_req, aa->aa_ocapa, 0, 1);
1738 cfs_list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
1739 if (oap->oap_request != NULL) {
1740 LASSERTF(request == oap->oap_request,
1741 "request %p != oap_request %p\n",
1742 request, oap->oap_request);
1743 if (oap->oap_interrupted) {
1744 ptlrpc_req_finished(new_req);
1749 /* New request takes over pga and oaps from old request.
1750 * Note that copying a list_head doesn't work, need to move it... */
1752 new_req->rq_interpret_reply = request->rq_interpret_reply;
1753 new_req->rq_async_args = request->rq_async_args;
1754 new_req->rq_commit_cb = request->rq_commit_cb;
1755 /* cap resend delay to the current request timeout, this is similar to
1756 * what ptlrpc does (see after_reply()) */
1757 if (aa->aa_resends > new_req->rq_timeout)
1758 new_req->rq_sent = cfs_time_current_sec() + new_req->rq_timeout;
1760 new_req->rq_sent = cfs_time_current_sec() + aa->aa_resends;
1761 new_req->rq_generation_set = 1;
1762 new_req->rq_import_generation = request->rq_import_generation;
1764 new_aa = ptlrpc_req_async_args(new_req);
1766 CFS_INIT_LIST_HEAD(&new_aa->aa_oaps);
1767 cfs_list_splice_init(&aa->aa_oaps, &new_aa->aa_oaps);
1768 CFS_INIT_LIST_HEAD(&new_aa->aa_exts);
1769 cfs_list_splice_init(&aa->aa_exts, &new_aa->aa_exts);
1770 new_aa->aa_resends = aa->aa_resends;
1772 cfs_list_for_each_entry(oap, &new_aa->aa_oaps, oap_rpc_item) {
1773 if (oap->oap_request) {
1774 ptlrpc_req_finished(oap->oap_request);
1775 oap->oap_request = ptlrpc_request_addref(new_req);
1779 new_aa->aa_ocapa = aa->aa_ocapa;
1780 aa->aa_ocapa = NULL;
1782 /* XXX: This code will run into problem if we're going to support
1783 * to add a series of BRW RPCs into a self-defined ptlrpc_request_set
1784 * and wait for all of them to be finished. We should inherit request
1785 * set from old request. */
1786 ptlrpcd_add_req(new_req, PDL_POLICY_SAME, -1);
1788 DEBUG_REQ(D_INFO, new_req, "new request");
1793 * ugh, we want disk allocation on the target to happen in offset order. we'll
1794 * follow sedgewicks advice and stick to the dead simple shellsort -- it'll do
1795 * fine for our small page arrays and doesn't require allocation. its an
1796 * insertion sort that swaps elements that are strides apart, shrinking the
1797 * stride down until its '1' and the array is sorted.
1799 static void sort_brw_pages(struct brw_page **array, int num)
1802 struct brw_page *tmp;
1806 for (stride = 1; stride < num ; stride = (stride * 3) + 1)
1811 for (i = stride ; i < num ; i++) {
1814 while (j >= stride && array[j - stride]->off > tmp->off) {
1815 array[j] = array[j - stride];
1820 } while (stride > 1);
1823 static obd_count max_unfragmented_pages(struct brw_page **pg, obd_count pages)
1829 LASSERT (pages > 0);
1830 offset = pg[i]->off & ~CFS_PAGE_MASK;
1834 if (pages == 0) /* that's all */
1837 if (offset + pg[i]->count < CFS_PAGE_SIZE)
1838 return count; /* doesn't end on page boundary */
1841 offset = pg[i]->off & ~CFS_PAGE_MASK;
1842 if (offset != 0) /* doesn't start on page boundary */
1849 static struct brw_page **osc_build_ppga(struct brw_page *pga, obd_count count)
1851 struct brw_page **ppga;
1854 OBD_ALLOC(ppga, sizeof(*ppga) * count);
1858 for (i = 0; i < count; i++)
1863 static void osc_release_ppga(struct brw_page **ppga, obd_count count)
1865 LASSERT(ppga != NULL);
1866 OBD_FREE(ppga, sizeof(*ppga) * count);
1869 static int osc_brw(int cmd, struct obd_export *exp, struct obd_info *oinfo,
1870 obd_count page_count, struct brw_page *pga,
1871 struct obd_trans_info *oti)
1873 struct obdo *saved_oa = NULL;
1874 struct brw_page **ppga, **orig;
1875 struct obd_import *imp = class_exp2cliimp(exp);
1876 struct client_obd *cli;
1877 int rc, page_count_orig;
1880 LASSERT((imp != NULL) && (imp->imp_obd != NULL));
1881 cli = &imp->imp_obd->u.cli;
1883 if (cmd & OBD_BRW_CHECK) {
1884 /* The caller just wants to know if there's a chance that this
1885 * I/O can succeed */
1887 if (imp->imp_invalid)
1892 /* test_brw with a failed create can trip this, maybe others. */
1893 LASSERT(cli->cl_max_pages_per_rpc);
1897 orig = ppga = osc_build_ppga(pga, page_count);
1900 page_count_orig = page_count;
1902 sort_brw_pages(ppga, page_count);
1903 while (page_count) {
1904 obd_count pages_per_brw;
1906 if (page_count > cli->cl_max_pages_per_rpc)
1907 pages_per_brw = cli->cl_max_pages_per_rpc;
1909 pages_per_brw = page_count;
1911 pages_per_brw = max_unfragmented_pages(ppga, pages_per_brw);
1913 if (saved_oa != NULL) {
1914 /* restore previously saved oa */
1915 *oinfo->oi_oa = *saved_oa;
1916 } else if (page_count > pages_per_brw) {
1917 /* save a copy of oa (brw will clobber it) */
1918 OBDO_ALLOC(saved_oa);
1919 if (saved_oa == NULL)
1920 GOTO(out, rc = -ENOMEM);
1921 *saved_oa = *oinfo->oi_oa;
1924 rc = osc_brw_internal(cmd, exp, oinfo->oi_oa, oinfo->oi_md,
1925 pages_per_brw, ppga, oinfo->oi_capa);
1930 page_count -= pages_per_brw;
1931 ppga += pages_per_brw;
1935 osc_release_ppga(orig, page_count_orig);
1937 if (saved_oa != NULL)
1938 OBDO_FREE(saved_oa);
1943 static int brw_interpret(const struct lu_env *env,
1944 struct ptlrpc_request *req, void *data, int rc)
1946 struct osc_brw_async_args *aa = data;
1947 struct osc_extent *ext;
1948 struct osc_extent *tmp;
1949 struct cl_object *obj = NULL;
1950 struct client_obd *cli = aa->aa_cli;
1953 rc = osc_brw_fini_request(req, rc);
1954 CDEBUG(D_INODE, "request %p aa %p rc %d\n", req, aa, rc);
1955 /* When server return -EINPROGRESS, client should always retry
1956 * regardless of the number of times the bulk was resent already. */
1957 if (osc_recoverable_error(rc)) {
1958 if (req->rq_import_generation !=
1959 req->rq_import->imp_generation) {
1960 CDEBUG(D_HA, "%s: resend cross eviction for object: "
1961 ""DOSTID", rc = %d.\n",
1962 req->rq_import->imp_obd->obd_name,
1963 POSTID(&aa->aa_oa->o_oi), rc);
1964 } else if (rc == -EINPROGRESS ||
1965 client_should_resend(aa->aa_resends, aa->aa_cli)) {
1966 rc = osc_brw_redo_request(req, aa, rc);
1968 CERROR("%s: too many resent retries for object: "
1969 ""LPU64":"LPU64", rc = %d.\n",
1970 req->rq_import->imp_obd->obd_name,
1971 POSTID(&aa->aa_oa->o_oi), rc);
1976 else if (rc == -EAGAIN || rc == -EINPROGRESS)
1981 capa_put(aa->aa_ocapa);
1982 aa->aa_ocapa = NULL;
1985 cfs_list_for_each_entry_safe(ext, tmp, &aa->aa_exts, oe_link) {
1986 if (obj == NULL && rc == 0) {
1987 obj = osc2cl(ext->oe_obj);
1991 cfs_list_del_init(&ext->oe_link);
1992 osc_extent_finish(env, ext, 1, rc);
1994 LASSERT(cfs_list_empty(&aa->aa_exts));
1995 LASSERT(cfs_list_empty(&aa->aa_oaps));
1998 struct obdo *oa = aa->aa_oa;
1999 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
2000 unsigned long valid = 0;
2003 if (oa->o_valid & OBD_MD_FLBLOCKS) {
2004 attr->cat_blocks = oa->o_blocks;
2005 valid |= CAT_BLOCKS;
2007 if (oa->o_valid & OBD_MD_FLMTIME) {
2008 attr->cat_mtime = oa->o_mtime;
2011 if (oa->o_valid & OBD_MD_FLATIME) {
2012 attr->cat_atime = oa->o_atime;
2015 if (oa->o_valid & OBD_MD_FLCTIME) {
2016 attr->cat_ctime = oa->o_ctime;
2020 cl_object_attr_lock(obj);
2021 cl_object_attr_set(env, obj, attr, valid);
2022 cl_object_attr_unlock(obj);
2024 cl_object_put(env, obj);
2026 OBDO_FREE(aa->aa_oa);
2028 cl_req_completion(env, aa->aa_clerq, rc < 0 ? rc :
2029 req->rq_bulk->bd_nob_transferred);
2030 osc_release_ppga(aa->aa_ppga, aa->aa_page_count);
2031 ptlrpc_lprocfs_brw(req, req->rq_bulk->bd_nob_transferred);
2033 client_obd_list_lock(&cli->cl_loi_list_lock);
2034 /* We need to decrement before osc_ap_completion->osc_wake_cache_waiters
2035 * is called so we know whether to go to sync BRWs or wait for more
2036 * RPCs to complete */
2037 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE)
2038 cli->cl_w_in_flight--;
2040 cli->cl_r_in_flight--;
2041 osc_wake_cache_waiters(cli);
2042 client_obd_list_unlock(&cli->cl_loi_list_lock);
2044 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
2048 static void brw_commit(struct ptlrpc_request *req)
2050 spin_lock(&req->rq_lock);
2051 /* If osc_inc_unstable_pages (via osc_extent_finish) races with
2052 * this called via the rq_commit_cb, I need to ensure
2053 * osc_dec_unstable_pages is still called. Otherwise unstable
2054 * pages may be leaked. */
2055 if (req->rq_unstable)
2056 osc_dec_unstable_pages(req);
2058 req->rq_committed = 1;
2059 spin_unlock(&req->rq_lock);
2063 * Build an RPC by the list of extent @ext_list. The caller must ensure
2064 * that the total pages in this list are NOT over max pages per RPC.
2065 * Extents in the list must be in OES_RPC state.
2067 int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
2068 cfs_list_t *ext_list, int cmd, pdl_policy_t pol)
2070 struct ptlrpc_request *req = NULL;
2071 struct osc_extent *ext;
2072 CFS_LIST_HEAD(rpc_list);
2073 struct brw_page **pga = NULL;
2074 struct osc_brw_async_args *aa = NULL;
2075 struct obdo *oa = NULL;
2076 struct osc_async_page *oap;
2077 struct osc_async_page *tmp;
2078 struct cl_req *clerq = NULL;
2079 enum cl_req_type crt = (cmd & OBD_BRW_WRITE) ? CRT_WRITE : CRT_READ;
2080 struct ldlm_lock *lock = NULL;
2081 struct cl_req_attr crattr;
2082 obd_off starting_offset = OBD_OBJECT_EOF;
2083 obd_off ending_offset = 0;
2084 int i, rc, mpflag = 0, mem_tight = 0, page_count = 0;
2087 LASSERT(!cfs_list_empty(ext_list));
2089 /* add pages into rpc_list to build BRW rpc */
2090 cfs_list_for_each_entry(ext, ext_list, oe_link) {
2091 LASSERT(ext->oe_state == OES_RPC);
2092 mem_tight |= ext->oe_memalloc;
2093 cfs_list_for_each_entry(oap, &ext->oe_pages, oap_pending_item) {
2095 cfs_list_add_tail(&oap->oap_rpc_item, &rpc_list);
2096 if (starting_offset > oap->oap_obj_off)
2097 starting_offset = oap->oap_obj_off;
2099 LASSERT(oap->oap_page_off == 0);
2100 if (ending_offset < oap->oap_obj_off + oap->oap_count)
2101 ending_offset = oap->oap_obj_off +
2104 LASSERT(oap->oap_page_off + oap->oap_count ==
2110 mpflag = cfs_memory_pressure_get_and_set();
2112 memset(&crattr, 0, sizeof crattr);
2113 OBD_ALLOC(pga, sizeof(*pga) * page_count);
2115 GOTO(out, rc = -ENOMEM);
2119 GOTO(out, rc = -ENOMEM);
2122 cfs_list_for_each_entry(oap, &rpc_list, oap_rpc_item) {
2123 struct cl_page *page = oap2cl_page(oap);
2124 if (clerq == NULL) {
2125 clerq = cl_req_alloc(env, page, crt,
2126 1 /* only 1-object rpcs for
2129 GOTO(out, rc = PTR_ERR(clerq));
2130 lock = oap->oap_ldlm_lock;
2133 oap->oap_brw_flags |= OBD_BRW_MEMALLOC;
2134 pga[i] = &oap->oap_brw_page;
2135 pga[i]->off = oap->oap_obj_off + oap->oap_page_off;
2136 CDEBUG(0, "put page %p index %lu oap %p flg %x to pga\n",
2137 pga[i]->pg, cfs_page_index(oap->oap_page), oap, pga[i]->flag);
2139 cl_req_page_add(env, clerq, page);
2142 /* always get the data for the obdo for the rpc */
2143 LASSERT(clerq != NULL);
2145 crattr.cra_capa = NULL;
2146 memset(crattr.cra_jobid, 0, JOBSTATS_JOBID_SIZE);
2147 cl_req_attr_set(env, clerq, &crattr, ~0ULL);
2149 oa->o_handle = lock->l_remote_handle;
2150 oa->o_valid |= OBD_MD_FLHANDLE;
2153 rc = cl_req_prep(env, clerq);
2155 CERROR("cl_req_prep failed: %d\n", rc);
2159 sort_brw_pages(pga, page_count);
2160 rc = osc_brw_prep_request(cmd, cli, oa, NULL, page_count,
2161 pga, &req, crattr.cra_capa, 1, 0);
2163 CERROR("prep_req failed: %d\n", rc);
2167 req->rq_commit_cb = brw_commit;
2168 req->rq_interpret_reply = brw_interpret;
2171 req->rq_memalloc = 1;
2173 /* Need to update the timestamps after the request is built in case
2174 * we race with setattr (locally or in queue at OST). If OST gets
2175 * later setattr before earlier BRW (as determined by the request xid),
2176 * the OST will not use BRW timestamps. Sadly, there is no obvious
2177 * way to do this in a single call. bug 10150 */
2178 cl_req_attr_set(env, clerq, &crattr,
2179 OBD_MD_FLMTIME|OBD_MD_FLCTIME|OBD_MD_FLATIME);
2181 lustre_msg_set_jobid(req->rq_reqmsg, crattr.cra_jobid);
2183 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
2184 aa = ptlrpc_req_async_args(req);
2185 CFS_INIT_LIST_HEAD(&aa->aa_oaps);
2186 cfs_list_splice_init(&rpc_list, &aa->aa_oaps);
2187 CFS_INIT_LIST_HEAD(&aa->aa_exts);
2188 cfs_list_splice_init(ext_list, &aa->aa_exts);
2189 aa->aa_clerq = clerq;
2191 /* queued sync pages can be torn down while the pages
2192 * were between the pending list and the rpc */
2194 cfs_list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
2195 /* only one oap gets a request reference */
2198 if (oap->oap_interrupted && !req->rq_intr) {
2199 CDEBUG(D_INODE, "oap %p in req %p interrupted\n",
2201 ptlrpc_mark_interrupted(req);
2205 tmp->oap_request = ptlrpc_request_addref(req);
2207 client_obd_list_lock(&cli->cl_loi_list_lock);
2208 starting_offset >>= CFS_PAGE_SHIFT;
2209 if (cmd == OBD_BRW_READ) {
2210 cli->cl_r_in_flight++;
2211 lprocfs_oh_tally_log2(&cli->cl_read_page_hist, page_count);
2212 lprocfs_oh_tally(&cli->cl_read_rpc_hist, cli->cl_r_in_flight);
2213 lprocfs_oh_tally_log2(&cli->cl_read_offset_hist,
2214 starting_offset + 1);
2216 cli->cl_w_in_flight++;
2217 lprocfs_oh_tally_log2(&cli->cl_write_page_hist, page_count);
2218 lprocfs_oh_tally(&cli->cl_write_rpc_hist, cli->cl_w_in_flight);
2219 lprocfs_oh_tally_log2(&cli->cl_write_offset_hist,
2220 starting_offset + 1);
2222 client_obd_list_unlock(&cli->cl_loi_list_lock);
2224 DEBUG_REQ(D_INODE, req, "%d pages, aa %p. now %dr/%dw in flight",
2225 page_count, aa, cli->cl_r_in_flight,
2226 cli->cl_w_in_flight);
2228 /* XXX: Maybe the caller can check the RPC bulk descriptor to
2229 * see which CPU/NUMA node the majority of pages were allocated
2230 * on, and try to assign the async RPC to the CPU core
2231 * (PDL_POLICY_PREFERRED) to reduce cross-CPU memory traffic.
2233 * But on the other hand, we expect that multiple ptlrpcd
2234 * threads and the initial write sponsor can run in parallel,
2235 * especially when data checksum is enabled, which is CPU-bound
2236 * operation and single ptlrpcd thread cannot process in time.
2237 * So more ptlrpcd threads sharing BRW load
2238 * (with PDL_POLICY_ROUND) seems better.
2240 ptlrpcd_add_req(req, pol, -1);
2246 cfs_memory_pressure_restore(mpflag);
2248 capa_put(crattr.cra_capa);
2250 LASSERT(req == NULL);
2255 OBD_FREE(pga, sizeof(*pga) * page_count);
2256 /* this should happen rarely and is pretty bad, it makes the
2257 * pending list not follow the dirty order */
2258 while (!cfs_list_empty(ext_list)) {
2259 ext = cfs_list_entry(ext_list->next, struct osc_extent,
2261 cfs_list_del_init(&ext->oe_link);
2262 osc_extent_finish(env, ext, 0, rc);
2264 if (clerq && !IS_ERR(clerq))
2265 cl_req_completion(env, clerq, rc);
2270 static int osc_set_lock_data_with_check(struct ldlm_lock *lock,
2271 struct ldlm_enqueue_info *einfo)
2273 void *data = einfo->ei_cbdata;
2276 LASSERT(lock != NULL);
2277 LASSERT(lock->l_blocking_ast == einfo->ei_cb_bl);
2278 LASSERT(lock->l_resource->lr_type == einfo->ei_type);
2279 LASSERT(lock->l_completion_ast == einfo->ei_cb_cp);
2280 LASSERT(lock->l_glimpse_ast == einfo->ei_cb_gl);
2282 lock_res_and_lock(lock);
2283 spin_lock(&osc_ast_guard);
2285 if (lock->l_ast_data == NULL)
2286 lock->l_ast_data = data;
2287 if (lock->l_ast_data == data)
2290 spin_unlock(&osc_ast_guard);
2291 unlock_res_and_lock(lock);
2296 static int osc_set_data_with_check(struct lustre_handle *lockh,
2297 struct ldlm_enqueue_info *einfo)
2299 struct ldlm_lock *lock = ldlm_handle2lock(lockh);
2303 set = osc_set_lock_data_with_check(lock, einfo);
2304 LDLM_LOCK_PUT(lock);
2306 CERROR("lockh %p, data %p - client evicted?\n",
2307 lockh, einfo->ei_cbdata);
2311 static int osc_change_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
2312 ldlm_iterator_t replace, void *data)
2314 struct ldlm_res_id res_id;
2315 struct obd_device *obd = class_exp2obd(exp);
2317 ostid_build_res_name(&lsm->lsm_oi, &res_id);
2318 ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
2322 /* find any ldlm lock of the inode in osc
2326 static int osc_find_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
2327 ldlm_iterator_t replace, void *data)
2329 struct ldlm_res_id res_id;
2330 struct obd_device *obd = class_exp2obd(exp);
2333 ostid_build_res_name(&lsm->lsm_oi, &res_id);
2334 rc = ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
2335 if (rc == LDLM_ITER_STOP)
2337 if (rc == LDLM_ITER_CONTINUE)
2342 static int osc_enqueue_fini(struct ptlrpc_request *req, struct ost_lvb *lvb,
2343 obd_enqueue_update_f upcall, void *cookie,
2344 __u64 *flags, int agl, int rc)
2346 int intent = *flags & LDLM_FL_HAS_INTENT;
2350 /* The request was created before ldlm_cli_enqueue call. */
2351 if (rc == ELDLM_LOCK_ABORTED) {
2352 struct ldlm_reply *rep;
2353 rep = req_capsule_server_get(&req->rq_pill,
2356 LASSERT(rep != NULL);
2357 if (rep->lock_policy_res1)
2358 rc = rep->lock_policy_res1;
2362 if ((intent != 0 && rc == ELDLM_LOCK_ABORTED && agl == 0) ||
2364 *flags |= LDLM_FL_LVB_READY;
2365 CDEBUG(D_INODE,"got kms "LPU64" blocks "LPU64" mtime "LPU64"\n",
2366 lvb->lvb_size, lvb->lvb_blocks, lvb->lvb_mtime);
2369 /* Call the update callback. */
2370 rc = (*upcall)(cookie, rc);
2374 static int osc_enqueue_interpret(const struct lu_env *env,
2375 struct ptlrpc_request *req,
2376 struct osc_enqueue_args *aa, int rc)
2378 struct ldlm_lock *lock;
2379 struct lustre_handle handle;
2381 struct ost_lvb *lvb;
2383 __u64 *flags = aa->oa_flags;
2385 /* Make a local copy of a lock handle and a mode, because aa->oa_*
2386 * might be freed anytime after lock upcall has been called. */
2387 lustre_handle_copy(&handle, aa->oa_lockh);
2388 mode = aa->oa_ei->ei_mode;
2390 /* ldlm_cli_enqueue is holding a reference on the lock, so it must
2392 lock = ldlm_handle2lock(&handle);
2394 /* Take an additional reference so that a blocking AST that
2395 * ldlm_cli_enqueue_fini() might post for a failed lock, is guaranteed
2396 * to arrive after an upcall has been executed by
2397 * osc_enqueue_fini(). */
2398 ldlm_lock_addref(&handle, mode);
2400 /* Let CP AST to grant the lock first. */
2401 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_ENQ_RACE, 1);
2403 if (aa->oa_agl && rc == ELDLM_LOCK_ABORTED) {
2408 lvb_len = sizeof(*aa->oa_lvb);
2411 /* Complete obtaining the lock procedure. */
2412 rc = ldlm_cli_enqueue_fini(aa->oa_exp, req, aa->oa_ei->ei_type, 1,
2413 mode, flags, lvb, lvb_len, &handle, rc);
2414 /* Complete osc stuff. */
2415 rc = osc_enqueue_fini(req, aa->oa_lvb, aa->oa_upcall, aa->oa_cookie,
2416 flags, aa->oa_agl, rc);
2418 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_CANCEL_RACE, 10);
2420 /* Release the lock for async request. */
2421 if (lustre_handle_is_used(&handle) && rc == ELDLM_OK)
2423 * Releases a reference taken by ldlm_cli_enqueue(), if it is
2424 * not already released by
2425 * ldlm_cli_enqueue_fini()->failed_lock_cleanup()
2427 ldlm_lock_decref(&handle, mode);
2429 LASSERTF(lock != NULL, "lockh %p, req %p, aa %p - client evicted?\n",
2430 aa->oa_lockh, req, aa);
2431 ldlm_lock_decref(&handle, mode);
2432 LDLM_LOCK_PUT(lock);
2436 void osc_update_enqueue(struct lustre_handle *lov_lockhp,
2437 struct lov_oinfo *loi, int flags,
2438 struct ost_lvb *lvb, __u32 mode, int rc)
2440 struct ldlm_lock *lock = ldlm_handle2lock(lov_lockhp);
2442 if (rc == ELDLM_OK) {
2445 LASSERT(lock != NULL);
2446 loi->loi_lvb = *lvb;
2447 tmp = loi->loi_lvb.lvb_size;
2448 /* Extend KMS up to the end of this lock and no further
2449 * A lock on [x,y] means a KMS of up to y + 1 bytes! */
2450 if (tmp > lock->l_policy_data.l_extent.end)
2451 tmp = lock->l_policy_data.l_extent.end + 1;
2452 if (tmp >= loi->loi_kms) {
2453 LDLM_DEBUG(lock, "lock acquired, setting rss="LPU64
2454 ", kms="LPU64, loi->loi_lvb.lvb_size, tmp);
2455 loi_kms_set(loi, tmp);
2457 LDLM_DEBUG(lock, "lock acquired, setting rss="
2458 LPU64"; leaving kms="LPU64", end="LPU64,
2459 loi->loi_lvb.lvb_size, loi->loi_kms,
2460 lock->l_policy_data.l_extent.end);
2462 ldlm_lock_allow_match(lock);
2463 } else if (rc == ELDLM_LOCK_ABORTED && (flags & LDLM_FL_HAS_INTENT)) {
2464 LASSERT(lock != NULL);
2465 loi->loi_lvb = *lvb;
2466 ldlm_lock_allow_match(lock);
2467 CDEBUG(D_INODE, "glimpsed, setting rss="LPU64"; leaving"
2468 " kms="LPU64"\n", loi->loi_lvb.lvb_size, loi->loi_kms);
2474 ldlm_lock_fail_match(lock);
2476 LDLM_LOCK_PUT(lock);
2479 EXPORT_SYMBOL(osc_update_enqueue);
2481 struct ptlrpc_request_set *PTLRPCD_SET = (void *)1;
2483 /* When enqueuing asynchronously, locks are not ordered, we can obtain a lock
2484 * from the 2nd OSC before a lock from the 1st one. This does not deadlock with
2485 * other synchronous requests, however keeping some locks and trying to obtain
2486 * others may take a considerable amount of time in a case of ost failure; and
2487 * when other sync requests do not get released lock from a client, the client
2488 * is excluded from the cluster -- such scenarious make the life difficult, so
2489 * release locks just after they are obtained. */
2490 int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2491 __u64 *flags, ldlm_policy_data_t *policy,
2492 struct ost_lvb *lvb, int kms_valid,
2493 obd_enqueue_update_f upcall, void *cookie,
2494 struct ldlm_enqueue_info *einfo,
2495 struct lustre_handle *lockh,
2496 struct ptlrpc_request_set *rqset, int async, int agl)
2498 struct obd_device *obd = exp->exp_obd;
2499 struct ptlrpc_request *req = NULL;
2500 int intent = *flags & LDLM_FL_HAS_INTENT;
2501 int match_lvb = (agl != 0 ? 0 : LDLM_FL_LVB_READY);
2506 /* Filesystem lock extents are extended to page boundaries so that
2507 * dealing with the page cache is a little smoother. */
2508 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2509 policy->l_extent.end |= ~CFS_PAGE_MASK;
2512 * kms is not valid when either object is completely fresh (so that no
2513 * locks are cached), or object was evicted. In the latter case cached
2514 * lock cannot be used, because it would prime inode state with
2515 * potentially stale LVB.
2520 /* Next, search for already existing extent locks that will cover us */
2521 /* If we're trying to read, we also search for an existing PW lock. The
2522 * VFS and page cache already protect us locally, so lots of readers/
2523 * writers can share a single PW lock.
2525 * There are problems with conversion deadlocks, so instead of
2526 * converting a read lock to a write lock, we'll just enqueue a new
2529 * At some point we should cancel the read lock instead of making them
2530 * send us a blocking callback, but there are problems with canceling
2531 * locks out from other users right now, too. */
2532 mode = einfo->ei_mode;
2533 if (einfo->ei_mode == LCK_PR)
2535 mode = ldlm_lock_match(obd->obd_namespace, *flags | match_lvb, res_id,
2536 einfo->ei_type, policy, mode, lockh, 0);
2538 struct ldlm_lock *matched = ldlm_handle2lock(lockh);
2540 if ((agl != 0) && !(matched->l_flags & LDLM_FL_LVB_READY)) {
2541 /* For AGL, if enqueue RPC is sent but the lock is not
2542 * granted, then skip to process this strpe.
2543 * Return -ECANCELED to tell the caller. */
2544 ldlm_lock_decref(lockh, mode);
2545 LDLM_LOCK_PUT(matched);
2547 } else if (osc_set_lock_data_with_check(matched, einfo)) {
2548 *flags |= LDLM_FL_LVB_READY;
2549 /* addref the lock only if not async requests and PW
2550 * lock is matched whereas we asked for PR. */
2551 if (!rqset && einfo->ei_mode != mode)
2552 ldlm_lock_addref(lockh, LCK_PR);
2554 /* I would like to be able to ASSERT here that
2555 * rss <= kms, but I can't, for reasons which
2556 * are explained in lov_enqueue() */
2559 /* We already have a lock, and it's referenced.
2561 * At this point, the cl_lock::cll_state is CLS_QUEUING,
2562 * AGL upcall may change it to CLS_HELD directly. */
2563 (*upcall)(cookie, ELDLM_OK);
2565 if (einfo->ei_mode != mode)
2566 ldlm_lock_decref(lockh, LCK_PW);
2568 /* For async requests, decref the lock. */
2569 ldlm_lock_decref(lockh, einfo->ei_mode);
2570 LDLM_LOCK_PUT(matched);
2573 ldlm_lock_decref(lockh, mode);
2574 LDLM_LOCK_PUT(matched);
2580 CFS_LIST_HEAD(cancels);
2581 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2582 &RQF_LDLM_ENQUEUE_LVB);
2586 rc = ldlm_prep_enqueue_req(exp, req, &cancels, 0);
2588 ptlrpc_request_free(req);
2592 req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
2594 ptlrpc_request_set_replen(req);
2597 /* users of osc_enqueue() can pass this flag for ldlm_lock_match() */
2598 *flags &= ~LDLM_FL_BLOCK_GRANTED;
2600 rc = ldlm_cli_enqueue(exp, &req, einfo, res_id, policy, flags, lvb,
2601 sizeof(*lvb), LVB_T_OST, lockh, async);
2604 struct osc_enqueue_args *aa;
2605 CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
2606 aa = ptlrpc_req_async_args(req);
2609 aa->oa_flags = flags;
2610 aa->oa_upcall = upcall;
2611 aa->oa_cookie = cookie;
2613 aa->oa_lockh = lockh;
2616 req->rq_interpret_reply =
2617 (ptlrpc_interpterer_t)osc_enqueue_interpret;
2618 if (rqset == PTLRPCD_SET)
2619 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
2621 ptlrpc_set_add_req(rqset, req);
2622 } else if (intent) {
2623 ptlrpc_req_finished(req);
2628 rc = osc_enqueue_fini(req, lvb, upcall, cookie, flags, agl, rc);
2630 ptlrpc_req_finished(req);
2635 static int osc_enqueue(struct obd_export *exp, struct obd_info *oinfo,
2636 struct ldlm_enqueue_info *einfo,
2637 struct ptlrpc_request_set *rqset)
2639 struct ldlm_res_id res_id;
2643 ostid_build_res_name(&oinfo->oi_md->lsm_oi, &res_id);
2644 rc = osc_enqueue_base(exp, &res_id, &oinfo->oi_flags, &oinfo->oi_policy,
2645 &oinfo->oi_md->lsm_oinfo[0]->loi_lvb,
2646 oinfo->oi_md->lsm_oinfo[0]->loi_kms_valid,
2647 oinfo->oi_cb_up, oinfo, einfo, oinfo->oi_lockh,
2648 rqset, rqset != NULL, 0);
2652 int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2653 __u32 type, ldlm_policy_data_t *policy, __u32 mode,
2654 int *flags, void *data, struct lustre_handle *lockh,
2657 struct obd_device *obd = exp->exp_obd;
2658 int lflags = *flags;
2662 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_MATCH))
2665 /* Filesystem lock extents are extended to page boundaries so that
2666 * dealing with the page cache is a little smoother */
2667 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2668 policy->l_extent.end |= ~CFS_PAGE_MASK;
2670 /* Next, search for already existing extent locks that will cover us */
2671 /* If we're trying to read, we also search for an existing PW lock. The
2672 * VFS and page cache already protect us locally, so lots of readers/
2673 * writers can share a single PW lock. */
2677 rc = ldlm_lock_match(obd->obd_namespace, lflags,
2678 res_id, type, policy, rc, lockh, unref);
2681 if (!osc_set_data_with_check(lockh, data)) {
2682 if (!(lflags & LDLM_FL_TEST_LOCK))
2683 ldlm_lock_decref(lockh, rc);
2687 if (!(lflags & LDLM_FL_TEST_LOCK) && mode != rc) {
2688 ldlm_lock_addref(lockh, LCK_PR);
2689 ldlm_lock_decref(lockh, LCK_PW);
2696 int osc_cancel_base(struct lustre_handle *lockh, __u32 mode)
2700 if (unlikely(mode == LCK_GROUP))
2701 ldlm_lock_decref_and_cancel(lockh, mode);
2703 ldlm_lock_decref(lockh, mode);
2708 static int osc_cancel(struct obd_export *exp, struct lov_stripe_md *md,
2709 __u32 mode, struct lustre_handle *lockh)
2712 RETURN(osc_cancel_base(lockh, mode));
2715 static int osc_cancel_unused(struct obd_export *exp,
2716 struct lov_stripe_md *lsm,
2717 ldlm_cancel_flags_t flags,
2720 struct obd_device *obd = class_exp2obd(exp);
2721 struct ldlm_res_id res_id, *resp = NULL;
2724 ostid_build_res_name(&lsm->lsm_oi, &res_id);
2728 return ldlm_cli_cancel_unused(obd->obd_namespace, resp, flags, opaque);
2731 static int osc_statfs_interpret(const struct lu_env *env,
2732 struct ptlrpc_request *req,
2733 struct osc_async_args *aa, int rc)
2735 struct obd_statfs *msfs;
2739 /* The request has in fact never been sent
2740 * due to issues at a higher level (LOV).
2741 * Exit immediately since the caller is
2742 * aware of the problem and takes care
2743 * of the clean up */
2746 if ((rc == -ENOTCONN || rc == -EAGAIN) &&
2747 (aa->aa_oi->oi_flags & OBD_STATFS_NODELAY))
2753 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2755 GOTO(out, rc = -EPROTO);
2758 *aa->aa_oi->oi_osfs = *msfs;
2760 rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
2764 static int osc_statfs_async(struct obd_export *exp,
2765 struct obd_info *oinfo, __u64 max_age,
2766 struct ptlrpc_request_set *rqset)
2768 struct obd_device *obd = class_exp2obd(exp);
2769 struct ptlrpc_request *req;
2770 struct osc_async_args *aa;
2774 /* We could possibly pass max_age in the request (as an absolute
2775 * timestamp or a "seconds.usec ago") so the target can avoid doing
2776 * extra calls into the filesystem if that isn't necessary (e.g.
2777 * during mount that would help a bit). Having relative timestamps
2778 * is not so great if request processing is slow, while absolute
2779 * timestamps are not ideal because they need time synchronization. */
2780 req = ptlrpc_request_alloc(obd->u.cli.cl_import, &RQF_OST_STATFS);
2784 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2786 ptlrpc_request_free(req);
2789 ptlrpc_request_set_replen(req);
2790 req->rq_request_portal = OST_CREATE_PORTAL;
2791 ptlrpc_at_set_req_timeout(req);
2793 if (oinfo->oi_flags & OBD_STATFS_NODELAY) {
2794 /* procfs requests not want stat in wait for avoid deadlock */
2795 req->rq_no_resend = 1;
2796 req->rq_no_delay = 1;
2799 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_statfs_interpret;
2800 CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
2801 aa = ptlrpc_req_async_args(req);
2804 ptlrpc_set_add_req(rqset, req);
2808 static int osc_statfs(const struct lu_env *env, struct obd_export *exp,
2809 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
2811 struct obd_device *obd = class_exp2obd(exp);
2812 struct obd_statfs *msfs;
2813 struct ptlrpc_request *req;
2814 struct obd_import *imp = NULL;
2818 /*Since the request might also come from lprocfs, so we need
2819 *sync this with client_disconnect_export Bug15684*/
2820 down_read(&obd->u.cli.cl_sem);
2821 if (obd->u.cli.cl_import)
2822 imp = class_import_get(obd->u.cli.cl_import);
2823 up_read(&obd->u.cli.cl_sem);
2827 /* We could possibly pass max_age in the request (as an absolute
2828 * timestamp or a "seconds.usec ago") so the target can avoid doing
2829 * extra calls into the filesystem if that isn't necessary (e.g.
2830 * during mount that would help a bit). Having relative timestamps
2831 * is not so great if request processing is slow, while absolute
2832 * timestamps are not ideal because they need time synchronization. */
2833 req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
2835 class_import_put(imp);
2840 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2842 ptlrpc_request_free(req);
2845 ptlrpc_request_set_replen(req);
2846 req->rq_request_portal = OST_CREATE_PORTAL;
2847 ptlrpc_at_set_req_timeout(req);
2849 if (flags & OBD_STATFS_NODELAY) {
2850 /* procfs requests not want stat in wait for avoid deadlock */
2851 req->rq_no_resend = 1;
2852 req->rq_no_delay = 1;
2855 rc = ptlrpc_queue_wait(req);
2859 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2861 GOTO(out, rc = -EPROTO);
2868 ptlrpc_req_finished(req);
2872 /* Retrieve object striping information.
2874 * @lmmu is a pointer to an in-core struct with lmm_ost_count indicating
2875 * the maximum number of OST indices which will fit in the user buffer.
2876 * lmm_magic must be LOV_MAGIC (we only use 1 slot here).
2878 static int osc_getstripe(struct lov_stripe_md *lsm, struct lov_user_md *lump)
2880 /* we use lov_user_md_v3 because it is larger than lov_user_md_v1 */
2881 struct lov_user_md_v3 lum, *lumk;
2882 struct lov_user_ost_data_v1 *lmm_objects;
2883 int rc = 0, lum_size;
2889 /* we only need the header part from user space to get lmm_magic and
2890 * lmm_stripe_count, (the header part is common to v1 and v3) */
2891 lum_size = sizeof(struct lov_user_md_v1);
2892 if (cfs_copy_from_user(&lum, lump, lum_size))
2895 if ((lum.lmm_magic != LOV_USER_MAGIC_V1) &&
2896 (lum.lmm_magic != LOV_USER_MAGIC_V3))
2899 /* lov_user_md_vX and lov_mds_md_vX must have the same size */
2900 LASSERT(sizeof(struct lov_user_md_v1) == sizeof(struct lov_mds_md_v1));
2901 LASSERT(sizeof(struct lov_user_md_v3) == sizeof(struct lov_mds_md_v3));
2902 LASSERT(sizeof(lum.lmm_objects[0]) == sizeof(lumk->lmm_objects[0]));
2904 /* we can use lov_mds_md_size() to compute lum_size
2905 * because lov_user_md_vX and lov_mds_md_vX have the same size */
2906 if (lum.lmm_stripe_count > 0) {
2907 lum_size = lov_mds_md_size(lum.lmm_stripe_count, lum.lmm_magic);
2908 OBD_ALLOC(lumk, lum_size);
2912 if (lum.lmm_magic == LOV_USER_MAGIC_V1)
2914 &(((struct lov_user_md_v1 *)lumk)->lmm_objects[0]);
2916 lmm_objects = &(lumk->lmm_objects[0]);
2917 lmm_objects->l_ost_oi = lsm->lsm_oi;
2919 lum_size = lov_mds_md_size(0, lum.lmm_magic);
2923 lumk->lmm_oi = lsm->lsm_oi;
2924 lumk->lmm_stripe_count = 1;
2926 if (cfs_copy_to_user(lump, lumk, lum_size))
2930 OBD_FREE(lumk, lum_size);
2936 static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2937 void *karg, void *uarg)
2939 struct obd_device *obd = exp->exp_obd;
2940 struct obd_ioctl_data *data = karg;
2944 if (!cfs_try_module_get(THIS_MODULE)) {
2945 CERROR("Can't get module. Is it alive?");
2949 case OBD_IOC_LOV_GET_CONFIG: {
2951 struct lov_desc *desc;
2952 struct obd_uuid uuid;
2956 if (obd_ioctl_getdata(&buf, &len, (void *)uarg))
2957 GOTO(out, err = -EINVAL);
2959 data = (struct obd_ioctl_data *)buf;
2961 if (sizeof(*desc) > data->ioc_inllen1) {
2962 obd_ioctl_freedata(buf, len);
2963 GOTO(out, err = -EINVAL);
2966 if (data->ioc_inllen2 < sizeof(uuid)) {
2967 obd_ioctl_freedata(buf, len);
2968 GOTO(out, err = -EINVAL);
2971 desc = (struct lov_desc *)data->ioc_inlbuf1;
2972 desc->ld_tgt_count = 1;
2973 desc->ld_active_tgt_count = 1;
2974 desc->ld_default_stripe_count = 1;
2975 desc->ld_default_stripe_size = 0;
2976 desc->ld_default_stripe_offset = 0;
2977 desc->ld_pattern = 0;
2978 memcpy(&desc->ld_uuid, &obd->obd_uuid, sizeof(uuid));
2980 memcpy(data->ioc_inlbuf2, &obd->obd_uuid, sizeof(uuid));
2982 err = cfs_copy_to_user((void *)uarg, buf, len);
2985 obd_ioctl_freedata(buf, len);
2988 case LL_IOC_LOV_SETSTRIPE:
2989 err = obd_alloc_memmd(exp, karg);
2993 case LL_IOC_LOV_GETSTRIPE:
2994 err = osc_getstripe(karg, uarg);
2996 case OBD_IOC_CLIENT_RECOVER:
2997 err = ptlrpc_recover_import(obd->u.cli.cl_import,
2998 data->ioc_inlbuf1, 0);
3002 case IOC_OSC_SET_ACTIVE:
3003 err = ptlrpc_set_import_active(obd->u.cli.cl_import,
3006 case OBD_IOC_POLL_QUOTACHECK:
3007 err = osc_quota_poll_check(exp, (struct if_quotacheck *)karg);
3009 case OBD_IOC_PING_TARGET:
3010 err = ptlrpc_obd_ping(obd);
3013 CDEBUG(D_INODE, "unrecognised ioctl %#x by %s\n",
3014 cmd, cfs_curproc_comm());
3015 GOTO(out, err = -ENOTTY);
3018 cfs_module_put(THIS_MODULE);
3022 static int osc_get_info(const struct lu_env *env, struct obd_export *exp,
3023 obd_count keylen, void *key, __u32 *vallen, void *val,
3024 struct lov_stripe_md *lsm)
3027 if (!vallen || !val)
3030 if (KEY_IS(KEY_LOCK_TO_STRIPE)) {
3031 __u32 *stripe = val;
3032 *vallen = sizeof(*stripe);
3035 } else if (KEY_IS(KEY_LAST_ID)) {
3036 struct ptlrpc_request *req;
3041 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
3042 &RQF_OST_GET_INFO_LAST_ID);
3046 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
3047 RCL_CLIENT, keylen);
3048 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
3050 ptlrpc_request_free(req);
3054 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
3055 memcpy(tmp, key, keylen);
3057 req->rq_no_delay = req->rq_no_resend = 1;
3058 ptlrpc_request_set_replen(req);
3059 rc = ptlrpc_queue_wait(req);
3063 reply = req_capsule_server_get(&req->rq_pill, &RMF_OBD_ID);
3065 GOTO(out, rc = -EPROTO);
3067 *((obd_id *)val) = *reply;
3069 ptlrpc_req_finished(req);
3071 } else if (KEY_IS(KEY_FIEMAP)) {
3072 struct ptlrpc_request *req;
3073 struct ll_user_fiemap *reply;
3077 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
3078 &RQF_OST_GET_INFO_FIEMAP);
3082 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_KEY,
3083 RCL_CLIENT, keylen);
3084 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
3085 RCL_CLIENT, *vallen);
3086 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
3087 RCL_SERVER, *vallen);
3089 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
3091 ptlrpc_request_free(req);
3095 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_KEY);
3096 memcpy(tmp, key, keylen);
3097 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_VAL);
3098 memcpy(tmp, val, *vallen);
3100 ptlrpc_request_set_replen(req);
3101 rc = ptlrpc_queue_wait(req);
3105 reply = req_capsule_server_get(&req->rq_pill, &RMF_FIEMAP_VAL);
3107 GOTO(out1, rc = -EPROTO);
3109 memcpy(val, reply, *vallen);
3111 ptlrpc_req_finished(req);
3119 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
3120 obd_count keylen, void *key, obd_count vallen,
3121 void *val, struct ptlrpc_request_set *set)
3123 struct ptlrpc_request *req;
3124 struct obd_device *obd = exp->exp_obd;
3125 struct obd_import *imp = class_exp2cliimp(exp);
3130 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_SHUTDOWN, 10);
3132 if (KEY_IS(KEY_CHECKSUM)) {
3133 if (vallen != sizeof(int))
3135 exp->exp_obd->u.cli.cl_checksum = (*(int *)val) ? 1 : 0;
3139 if (KEY_IS(KEY_SPTLRPC_CONF)) {
3140 sptlrpc_conf_client_adapt(obd);
3144 if (KEY_IS(KEY_FLUSH_CTX)) {
3145 sptlrpc_import_flush_my_ctx(imp);
3149 if (KEY_IS(KEY_CACHE_SET)) {
3150 struct client_obd *cli = &obd->u.cli;
3152 LASSERT(cli->cl_cache == NULL); /* only once */
3153 cli->cl_cache = (struct cl_client_cache *)val;
3154 cfs_atomic_inc(&cli->cl_cache->ccc_users);
3155 cli->cl_lru_left = &cli->cl_cache->ccc_lru_left;
3157 /* add this osc into entity list */
3158 LASSERT(cfs_list_empty(&cli->cl_lru_osc));
3159 spin_lock(&cli->cl_cache->ccc_lru_lock);
3160 cfs_list_add(&cli->cl_lru_osc, &cli->cl_cache->ccc_lru);
3161 spin_unlock(&cli->cl_cache->ccc_lru_lock);
3166 if (KEY_IS(KEY_CACHE_LRU_SHRINK)) {
3167 struct client_obd *cli = &obd->u.cli;
3168 int nr = cfs_atomic_read(&cli->cl_lru_in_list) >> 1;
3169 int target = *(int *)val;
3171 nr = osc_lru_shrink(cli, min(nr, target));
3176 if (!set && !KEY_IS(KEY_GRANT_SHRINK))
3179 /* We pass all other commands directly to OST. Since nobody calls osc
3180 methods directly and everybody is supposed to go through LOV, we
3181 assume lov checked invalid values for us.
3182 The only recognised values so far are evict_by_nid and mds_conn.
3183 Even if something bad goes through, we'd get a -EINVAL from OST
3186 req = ptlrpc_request_alloc(imp, KEY_IS(KEY_GRANT_SHRINK) ?
3187 &RQF_OST_SET_GRANT_INFO :
3192 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
3193 RCL_CLIENT, keylen);
3194 if (!KEY_IS(KEY_GRANT_SHRINK))
3195 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
3196 RCL_CLIENT, vallen);
3197 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SET_INFO);
3199 ptlrpc_request_free(req);
3203 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
3204 memcpy(tmp, key, keylen);
3205 tmp = req_capsule_client_get(&req->rq_pill, KEY_IS(KEY_GRANT_SHRINK) ?
3208 memcpy(tmp, val, vallen);
3210 if (KEY_IS(KEY_GRANT_SHRINK)) {
3211 struct osc_grant_args *aa;
3214 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
3215 aa = ptlrpc_req_async_args(req);
3218 ptlrpc_req_finished(req);
3221 *oa = ((struct ost_body *)val)->oa;
3223 req->rq_interpret_reply = osc_shrink_grant_interpret;
3226 ptlrpc_request_set_replen(req);
3227 if (!KEY_IS(KEY_GRANT_SHRINK)) {
3228 LASSERT(set != NULL);
3229 ptlrpc_set_add_req(set, req);
3230 ptlrpc_check_set(NULL, set);
3232 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
3238 static int osc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
3239 struct obd_device *disk_obd, int *index)
3241 /* this code is not supposed to be used with LOD/OSP
3242 * to be removed soon */
3247 static int osc_llog_finish(struct obd_device *obd, int count)
3249 struct llog_ctxt *ctxt;
3253 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
3255 llog_cat_close(NULL, ctxt->loc_handle);
3256 llog_cleanup(NULL, ctxt);
3259 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
3261 llog_cleanup(NULL, ctxt);
3265 static int osc_reconnect(const struct lu_env *env,
3266 struct obd_export *exp, struct obd_device *obd,
3267 struct obd_uuid *cluuid,
3268 struct obd_connect_data *data,
3271 struct client_obd *cli = &obd->u.cli;
3273 if (data != NULL && (data->ocd_connect_flags & OBD_CONNECT_GRANT)) {
3276 client_obd_list_lock(&cli->cl_loi_list_lock);
3277 data->ocd_grant = (cli->cl_avail_grant + cli->cl_dirty) ?:
3278 2 * cli_brw_size(obd);
3279 lost_grant = cli->cl_lost_grant;
3280 cli->cl_lost_grant = 0;
3281 client_obd_list_unlock(&cli->cl_loi_list_lock);
3283 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d"
3284 " ocd_grant: %d, lost: %ld.\n", data->ocd_connect_flags,
3285 data->ocd_version, data->ocd_grant, lost_grant);
3291 static int osc_disconnect(struct obd_export *exp)
3293 struct obd_device *obd = class_exp2obd(exp);
3294 struct llog_ctxt *ctxt;
3297 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
3299 if (obd->u.cli.cl_conn_count == 1) {
3300 /* Flush any remaining cancel messages out to the
3302 llog_sync(ctxt, exp, 0);
3304 llog_ctxt_put(ctxt);
3306 CDEBUG(D_HA, "No LLOG_SIZE_REPL_CTXT found in obd %p\n",
3310 rc = client_disconnect_export(exp);
3312 * Initially we put del_shrink_grant before disconnect_export, but it
3313 * causes the following problem if setup (connect) and cleanup
3314 * (disconnect) are tangled together.
3315 * connect p1 disconnect p2
3316 * ptlrpc_connect_import
3317 * ............... class_manual_cleanup
3320 * ptlrpc_connect_interrupt
3322 * add this client to shrink list
3324 * Bang! pinger trigger the shrink.
3325 * So the osc should be disconnected from the shrink list, after we
3326 * are sure the import has been destroyed. BUG18662
3328 if (obd->u.cli.cl_import == NULL)
3329 osc_del_shrink_grant(&obd->u.cli);
3333 static int osc_import_event(struct obd_device *obd,
3334 struct obd_import *imp,
3335 enum obd_import_event event)
3337 struct client_obd *cli;
3341 LASSERT(imp->imp_obd == obd);
3344 case IMP_EVENT_DISCON: {
3346 client_obd_list_lock(&cli->cl_loi_list_lock);
3347 cli->cl_avail_grant = 0;
3348 cli->cl_lost_grant = 0;
3349 client_obd_list_unlock(&cli->cl_loi_list_lock);
3352 case IMP_EVENT_INACTIVE: {
3353 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
3356 case IMP_EVENT_INVALIDATE: {
3357 struct ldlm_namespace *ns = obd->obd_namespace;
3361 env = cl_env_get(&refcheck);
3365 /* all pages go to failing rpcs due to the invalid
3367 osc_io_unplug(env, cli, NULL, PDL_POLICY_ROUND);
3369 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
3370 cl_env_put(env, &refcheck);
3375 case IMP_EVENT_ACTIVE: {
3376 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
3379 case IMP_EVENT_OCD: {
3380 struct obd_connect_data *ocd = &imp->imp_connect_data;
3382 if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT)
3383 osc_init_grant(&obd->u.cli, ocd);
3386 if (ocd->ocd_connect_flags & OBD_CONNECT_REQPORTAL)
3387 imp->imp_client->cli_request_portal =OST_REQUEST_PORTAL;
3389 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
3392 case IMP_EVENT_DEACTIVATE: {
3393 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DEACTIVATE, NULL);
3396 case IMP_EVENT_ACTIVATE: {
3397 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVATE, NULL);
3401 CERROR("Unknown import event %d\n", event);
3408 * Determine whether the lock can be canceled before replaying the lock
3409 * during recovery, see bug16774 for detailed information.
3411 * \retval zero the lock can't be canceled
3412 * \retval other ok to cancel
3414 static int osc_cancel_for_recovery(struct ldlm_lock *lock)
3416 check_res_locked(lock->l_resource);
3419 * Cancel all unused extent lock in granted mode LCK_PR or LCK_CR.
3421 * XXX as a future improvement, we can also cancel unused write lock
3422 * if it doesn't have dirty data and active mmaps.
3424 if (lock->l_resource->lr_type == LDLM_EXTENT &&
3425 (lock->l_granted_mode == LCK_PR ||
3426 lock->l_granted_mode == LCK_CR) &&
3427 (osc_dlm_lock_pageref(lock) == 0))
3433 static int brw_queue_work(const struct lu_env *env, void *data)
3435 struct client_obd *cli = data;
3437 CDEBUG(D_CACHE, "Run writeback work for client obd %p.\n", cli);
3439 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
3443 int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
3445 struct lprocfs_static_vars lvars = { 0 };
3446 struct client_obd *cli = &obd->u.cli;
3451 rc = ptlrpcd_addref();
3455 rc = client_obd_setup(obd, lcfg);
3457 GOTO(out_ptlrpcd, rc);
3459 handler = ptlrpcd_alloc_work(cli->cl_import, brw_queue_work, cli);
3460 if (IS_ERR(handler))
3461 GOTO(out_client_setup, rc = PTR_ERR(handler));
3462 cli->cl_writeback_work = handler;
3464 rc = osc_quota_setup(obd);
3466 GOTO(out_ptlrpcd_work, rc);
3468 cli->cl_grant_shrink_interval = GRANT_SHRINK_INTERVAL;
3469 lprocfs_osc_init_vars(&lvars);
3470 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0) {
3471 lproc_osc_attach_seqstat(obd);
3472 sptlrpc_lprocfs_cliobd_attach(obd);
3473 ptlrpc_lprocfs_register_obd(obd);
3476 /* We need to allocate a few requests more, because
3477 * brw_interpret tries to create new requests before freeing
3478 * previous ones, Ideally we want to have 2x max_rpcs_in_flight
3479 * reserved, but I'm afraid that might be too much wasted RAM
3480 * in fact, so 2 is just my guess and still should work. */
3481 cli->cl_import->imp_rq_pool =
3482 ptlrpc_init_rq_pool(cli->cl_max_rpcs_in_flight + 2,
3484 ptlrpc_add_rqs_to_pool);
3486 CFS_INIT_LIST_HEAD(&cli->cl_grant_shrink_list);
3487 ns_register_cancel(obd->obd_namespace, osc_cancel_for_recovery);
3491 ptlrpcd_destroy_work(handler);
3493 client_obd_cleanup(obd);
3499 static int osc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
3505 case OBD_CLEANUP_EARLY: {
3506 struct obd_import *imp;
3507 imp = obd->u.cli.cl_import;
3508 CDEBUG(D_HA, "Deactivating import %s\n", obd->obd_name);
3509 /* ptlrpc_abort_inflight to stop an mds_lov_synchronize */
3510 ptlrpc_deactivate_import(imp);
3511 spin_lock(&imp->imp_lock);
3512 imp->imp_pingable = 0;
3513 spin_unlock(&imp->imp_lock);
3516 case OBD_CLEANUP_EXPORTS: {
3517 struct client_obd *cli = &obd->u.cli;
3519 * for echo client, export may be on zombie list, wait for
3520 * zombie thread to cull it, because cli.cl_import will be
3521 * cleared in client_disconnect_export():
3522 * class_export_destroy() -> obd_cleanup() ->
3523 * echo_device_free() -> echo_client_cleanup() ->
3524 * obd_disconnect() -> osc_disconnect() ->
3525 * client_disconnect_export()
3527 obd_zombie_barrier();
3528 if (cli->cl_writeback_work) {
3529 ptlrpcd_destroy_work(cli->cl_writeback_work);
3530 cli->cl_writeback_work = NULL;
3532 obd_cleanup_client_import(obd);
3533 ptlrpc_lprocfs_unregister_obd(obd);
3534 lprocfs_obd_cleanup(obd);
3535 rc = obd_llog_finish(obd, 0);
3537 CERROR("failed to cleanup llogging subsystems\n");
3544 int osc_cleanup(struct obd_device *obd)
3546 struct client_obd *cli = &obd->u.cli;
3552 if (cli->cl_cache != NULL) {
3553 LASSERT(cfs_atomic_read(&cli->cl_cache->ccc_users) > 0);
3554 spin_lock(&cli->cl_cache->ccc_lru_lock);
3555 cfs_list_del_init(&cli->cl_lru_osc);
3556 spin_unlock(&cli->cl_cache->ccc_lru_lock);
3557 cli->cl_lru_left = NULL;
3558 cfs_atomic_dec(&cli->cl_cache->ccc_users);
3559 cli->cl_cache = NULL;
3562 /* free memory of osc quota cache */
3563 osc_quota_cleanup(obd);
3565 rc = client_obd_cleanup(obd);
3571 int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg)
3573 struct lprocfs_static_vars lvars = { 0 };
3576 lprocfs_osc_init_vars(&lvars);
3578 switch (lcfg->lcfg_command) {
3580 rc = class_process_proc_param(PARAM_OSC, lvars.obd_vars,
3590 static int osc_process_config(struct obd_device *obd, obd_count len, void *buf)
3592 return osc_process_config_base(obd, buf);
3595 struct obd_ops osc_obd_ops = {
3596 .o_owner = THIS_MODULE,
3597 .o_setup = osc_setup,
3598 .o_precleanup = osc_precleanup,
3599 .o_cleanup = osc_cleanup,
3600 .o_add_conn = client_import_add_conn,
3601 .o_del_conn = client_import_del_conn,
3602 .o_connect = client_connect_import,
3603 .o_reconnect = osc_reconnect,
3604 .o_disconnect = osc_disconnect,
3605 .o_statfs = osc_statfs,
3606 .o_statfs_async = osc_statfs_async,
3607 .o_packmd = osc_packmd,
3608 .o_unpackmd = osc_unpackmd,
3609 .o_create = osc_create,
3610 .o_destroy = osc_destroy,
3611 .o_getattr = osc_getattr,
3612 .o_getattr_async = osc_getattr_async,
3613 .o_setattr = osc_setattr,
3614 .o_setattr_async = osc_setattr_async,
3616 .o_punch = osc_punch,
3618 .o_enqueue = osc_enqueue,
3619 .o_change_cbdata = osc_change_cbdata,
3620 .o_find_cbdata = osc_find_cbdata,
3621 .o_cancel = osc_cancel,
3622 .o_cancel_unused = osc_cancel_unused,
3623 .o_iocontrol = osc_iocontrol,
3624 .o_get_info = osc_get_info,
3625 .o_set_info_async = osc_set_info_async,
3626 .o_import_event = osc_import_event,
3627 .o_llog_init = osc_llog_init,
3628 .o_llog_finish = osc_llog_finish,
3629 .o_process_config = osc_process_config,
3630 .o_quotactl = osc_quotactl,
3631 .o_quotacheck = osc_quotacheck,
3634 extern struct lu_kmem_descr osc_caches[];
3635 extern spinlock_t osc_ast_guard;
3636 extern struct lock_class_key osc_ast_guard_class;
3638 int __init osc_init(void)
3640 struct lprocfs_static_vars lvars = { 0 };
3644 /* print an address of _any_ initialized kernel symbol from this
3645 * module, to allow debugging with gdb that doesn't support data
3646 * symbols from modules.*/
3647 CDEBUG(D_INFO, "Lustre OSC module (%p).\n", &osc_caches);
3649 rc = lu_kmem_init(osc_caches);
3651 lprocfs_osc_init_vars(&lvars);
3653 rc = class_register_type(&osc_obd_ops, NULL, lvars.module_vars,
3654 LUSTRE_OSC_NAME, &osc_device_type);
3656 lu_kmem_fini(osc_caches);
3660 spin_lock_init(&osc_ast_guard);
3661 lockdep_set_class(&osc_ast_guard, &osc_ast_guard_class);
3667 static void /*__exit*/ osc_exit(void)
3669 class_unregister_type(LUSTRE_OSC_NAME);
3670 lu_kmem_fini(osc_caches);
3673 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3674 MODULE_DESCRIPTION("Lustre Object Storage Client (OSC)");
3675 MODULE_LICENSE("GPL");
3677 cfs_module(osc, LUSTRE_VERSION_STRING, osc_init, osc_exit);
git://git.whamcloud.com / fs / lustre-release.git / blob