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, 2012, 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(oa->o_seq))
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_dirty_pages) -
833 cfs_atomic_read(&obd_dirty_transit_pages) >
834 (long)(obd_max_dirty_pages + 1))) {
835 /* The cfs_atomic_read() allowing the cfs_atomic_inc() are
836 * not covered by a lock thus they may safely race and trip
837 * this CERROR() unless we add in a small fudge factor (+1). */
838 CERROR("dirty %d - %d > system dirty_max %d\n",
839 cfs_atomic_read(&obd_dirty_pages),
840 cfs_atomic_read(&obd_dirty_transit_pages),
841 obd_max_dirty_pages);
843 } else if (unlikely(cli->cl_dirty_max - cli->cl_dirty > 0x7fffffff)) {
844 CERROR("dirty %lu - dirty_max %lu too big???\n",
845 cli->cl_dirty, cli->cl_dirty_max);
848 long max_in_flight = (cli->cl_max_pages_per_rpc <<
850 (cli->cl_max_rpcs_in_flight + 1);
851 oa->o_undirty = max(cli->cl_dirty_max, max_in_flight);
853 oa->o_grant = cli->cl_avail_grant + cli->cl_reserved_grant;
854 oa->o_dropped = cli->cl_lost_grant;
855 cli->cl_lost_grant = 0;
856 client_obd_list_unlock(&cli->cl_loi_list_lock);
857 CDEBUG(D_CACHE,"dirty: "LPU64" undirty: %u dropped %u grant: "LPU64"\n",
858 oa->o_dirty, oa->o_undirty, oa->o_dropped, oa->o_grant);
862 void osc_update_next_shrink(struct client_obd *cli)
864 cli->cl_next_shrink_grant =
865 cfs_time_shift(cli->cl_grant_shrink_interval);
866 CDEBUG(D_CACHE, "next time %ld to shrink grant \n",
867 cli->cl_next_shrink_grant);
870 static void __osc_update_grant(struct client_obd *cli, obd_size grant)
872 client_obd_list_lock(&cli->cl_loi_list_lock);
873 cli->cl_avail_grant += grant;
874 client_obd_list_unlock(&cli->cl_loi_list_lock);
877 static void osc_update_grant(struct client_obd *cli, struct ost_body *body)
879 if (body->oa.o_valid & OBD_MD_FLGRANT) {
880 CDEBUG(D_CACHE, "got "LPU64" extra grant\n", body->oa.o_grant);
881 __osc_update_grant(cli, body->oa.o_grant);
885 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
886 obd_count keylen, void *key, obd_count vallen,
887 void *val, struct ptlrpc_request_set *set);
889 static int osc_shrink_grant_interpret(const struct lu_env *env,
890 struct ptlrpc_request *req,
893 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
894 struct obdo *oa = ((struct osc_grant_args *)aa)->aa_oa;
895 struct ost_body *body;
898 __osc_update_grant(cli, oa->o_grant);
902 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
904 osc_update_grant(cli, body);
910 static void osc_shrink_grant_local(struct client_obd *cli, struct obdo *oa)
912 client_obd_list_lock(&cli->cl_loi_list_lock);
913 oa->o_grant = cli->cl_avail_grant / 4;
914 cli->cl_avail_grant -= oa->o_grant;
915 client_obd_list_unlock(&cli->cl_loi_list_lock);
916 if (!(oa->o_valid & OBD_MD_FLFLAGS)) {
917 oa->o_valid |= OBD_MD_FLFLAGS;
920 oa->o_flags |= OBD_FL_SHRINK_GRANT;
921 osc_update_next_shrink(cli);
924 /* Shrink the current grant, either from some large amount to enough for a
925 * full set of in-flight RPCs, or if we have already shrunk to that limit
926 * then to enough for a single RPC. This avoids keeping more grant than
927 * needed, and avoids shrinking the grant piecemeal. */
928 static int osc_shrink_grant(struct client_obd *cli)
930 __u64 target_bytes = (cli->cl_max_rpcs_in_flight + 1) *
931 (cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT);
933 client_obd_list_lock(&cli->cl_loi_list_lock);
934 if (cli->cl_avail_grant <= target_bytes)
935 target_bytes = cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT;
936 client_obd_list_unlock(&cli->cl_loi_list_lock);
938 return osc_shrink_grant_to_target(cli, target_bytes);
941 int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes)
944 struct ost_body *body;
947 client_obd_list_lock(&cli->cl_loi_list_lock);
948 /* Don't shrink if we are already above or below the desired limit
949 * We don't want to shrink below a single RPC, as that will negatively
950 * impact block allocation and long-term performance. */
951 if (target_bytes < cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT)
952 target_bytes = cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT;
954 if (target_bytes >= cli->cl_avail_grant) {
955 client_obd_list_unlock(&cli->cl_loi_list_lock);
958 client_obd_list_unlock(&cli->cl_loi_list_lock);
964 osc_announce_cached(cli, &body->oa, 0);
966 client_obd_list_lock(&cli->cl_loi_list_lock);
967 body->oa.o_grant = cli->cl_avail_grant - target_bytes;
968 cli->cl_avail_grant = target_bytes;
969 client_obd_list_unlock(&cli->cl_loi_list_lock);
970 if (!(body->oa.o_valid & OBD_MD_FLFLAGS)) {
971 body->oa.o_valid |= OBD_MD_FLFLAGS;
972 body->oa.o_flags = 0;
974 body->oa.o_flags |= OBD_FL_SHRINK_GRANT;
975 osc_update_next_shrink(cli);
977 rc = osc_set_info_async(NULL, cli->cl_import->imp_obd->obd_self_export,
978 sizeof(KEY_GRANT_SHRINK), KEY_GRANT_SHRINK,
979 sizeof(*body), body, NULL);
981 __osc_update_grant(cli, body->oa.o_grant);
986 static int osc_should_shrink_grant(struct client_obd *client)
988 cfs_time_t time = cfs_time_current();
989 cfs_time_t next_shrink = client->cl_next_shrink_grant;
991 if ((client->cl_import->imp_connect_data.ocd_connect_flags &
992 OBD_CONNECT_GRANT_SHRINK) == 0)
995 if (cfs_time_aftereq(time, next_shrink - 5 * CFS_TICK)) {
996 /* Get the current RPC size directly, instead of going via:
997 * cli_brw_size(obd->u.cli.cl_import->imp_obd->obd_self_export)
998 * Keep comment here so that it can be found by searching. */
999 int brw_size = client->cl_max_pages_per_rpc << CFS_PAGE_SHIFT;
1001 if (client->cl_import->imp_state == LUSTRE_IMP_FULL &&
1002 client->cl_avail_grant > brw_size)
1005 osc_update_next_shrink(client);
1010 static int osc_grant_shrink_grant_cb(struct timeout_item *item, void *data)
1012 struct client_obd *client;
1014 cfs_list_for_each_entry(client, &item->ti_obd_list,
1015 cl_grant_shrink_list) {
1016 if (osc_should_shrink_grant(client))
1017 osc_shrink_grant(client);
1022 static int osc_add_shrink_grant(struct client_obd *client)
1026 rc = ptlrpc_add_timeout_client(client->cl_grant_shrink_interval,
1028 osc_grant_shrink_grant_cb, NULL,
1029 &client->cl_grant_shrink_list);
1031 CERROR("add grant client %s error %d\n",
1032 client->cl_import->imp_obd->obd_name, rc);
1035 CDEBUG(D_CACHE, "add grant client %s \n",
1036 client->cl_import->imp_obd->obd_name);
1037 osc_update_next_shrink(client);
1041 static int osc_del_shrink_grant(struct client_obd *client)
1043 return ptlrpc_del_timeout_client(&client->cl_grant_shrink_list,
1047 static void osc_init_grant(struct client_obd *cli, struct obd_connect_data *ocd)
1050 * ocd_grant is the total grant amount we're expect to hold: if we've
1051 * been evicted, it's the new avail_grant amount, cl_dirty will drop
1052 * to 0 as inflight RPCs fail out; otherwise, it's avail_grant + dirty.
1054 * race is tolerable here: if we're evicted, but imp_state already
1055 * left EVICTED state, then cl_dirty must be 0 already.
1057 client_obd_list_lock(&cli->cl_loi_list_lock);
1058 if (cli->cl_import->imp_state == LUSTRE_IMP_EVICTED)
1059 cli->cl_avail_grant = ocd->ocd_grant;
1061 cli->cl_avail_grant = ocd->ocd_grant - cli->cl_dirty;
1063 if (cli->cl_avail_grant < 0) {
1064 CWARN("%s: available grant < 0, the OSS is probably not running"
1065 " with patch from bug20278 (%ld) \n",
1066 cli->cl_import->imp_obd->obd_name, cli->cl_avail_grant);
1067 /* workaround for 1.6 servers which do not have
1068 * the patch from bug20278 */
1069 cli->cl_avail_grant = ocd->ocd_grant;
1072 /* determine the appropriate chunk size used by osc_extent. */
1073 cli->cl_chunkbits = max_t(int, CFS_PAGE_SHIFT, ocd->ocd_blocksize);
1074 client_obd_list_unlock(&cli->cl_loi_list_lock);
1076 CDEBUG(D_CACHE, "%s, setting cl_avail_grant: %ld cl_lost_grant: %ld."
1077 "chunk bits: %d.\n", cli->cl_import->imp_obd->obd_name,
1078 cli->cl_avail_grant, cli->cl_lost_grant, cli->cl_chunkbits);
1080 if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT_SHRINK &&
1081 cfs_list_empty(&cli->cl_grant_shrink_list))
1082 osc_add_shrink_grant(cli);
1085 /* We assume that the reason this OSC got a short read is because it read
1086 * beyond the end of a stripe file; i.e. lustre is reading a sparse file
1087 * via the LOV, and it _knows_ it's reading inside the file, it's just that
1088 * this stripe never got written at or beyond this stripe offset yet. */
1089 static void handle_short_read(int nob_read, obd_count page_count,
1090 struct brw_page **pga)
1095 /* skip bytes read OK */
1096 while (nob_read > 0) {
1097 LASSERT (page_count > 0);
1099 if (pga[i]->count > nob_read) {
1100 /* EOF inside this page */
1101 ptr = cfs_kmap(pga[i]->pg) +
1102 (pga[i]->off & ~CFS_PAGE_MASK);
1103 memset(ptr + nob_read, 0, pga[i]->count - nob_read);
1104 cfs_kunmap(pga[i]->pg);
1110 nob_read -= pga[i]->count;
1115 /* zero remaining pages */
1116 while (page_count-- > 0) {
1117 ptr = cfs_kmap(pga[i]->pg) + (pga[i]->off & ~CFS_PAGE_MASK);
1118 memset(ptr, 0, pga[i]->count);
1119 cfs_kunmap(pga[i]->pg);
1124 static int check_write_rcs(struct ptlrpc_request *req,
1125 int requested_nob, int niocount,
1126 obd_count page_count, struct brw_page **pga)
1131 remote_rcs = req_capsule_server_sized_get(&req->rq_pill, &RMF_RCS,
1132 sizeof(*remote_rcs) *
1134 if (remote_rcs == NULL) {
1135 CDEBUG(D_INFO, "Missing/short RC vector on BRW_WRITE reply\n");
1139 /* return error if any niobuf was in error */
1140 for (i = 0; i < niocount; i++) {
1141 if ((int)remote_rcs[i] < 0)
1142 return(remote_rcs[i]);
1144 if (remote_rcs[i] != 0) {
1145 CDEBUG(D_INFO, "rc[%d] invalid (%d) req %p\n",
1146 i, remote_rcs[i], req);
1151 if (req->rq_bulk->bd_nob_transferred != requested_nob) {
1152 CERROR("Unexpected # bytes transferred: %d (requested %d)\n",
1153 req->rq_bulk->bd_nob_transferred, requested_nob);
1160 static inline int can_merge_pages(struct brw_page *p1, struct brw_page *p2)
1162 if (p1->flag != p2->flag) {
1163 unsigned mask = ~(OBD_BRW_FROM_GRANT| OBD_BRW_NOCACHE|
1164 OBD_BRW_SYNC|OBD_BRW_ASYNC|OBD_BRW_NOQUOTA);
1166 /* warn if we try to combine flags that we don't know to be
1167 * safe to combine */
1168 if (unlikely((p1->flag & mask) != (p2->flag & mask))) {
1169 CWARN("Saw flags 0x%x and 0x%x in the same brw, please "
1170 "report this at http://bugs.whamcloud.com/\n",
1171 p1->flag, p2->flag);
1176 return (p1->off + p1->count == p2->off);
1179 static obd_count osc_checksum_bulk(int nob, obd_count pg_count,
1180 struct brw_page **pga, int opc,
1181 cksum_type_t cksum_type)
1185 struct cfs_crypto_hash_desc *hdesc;
1186 unsigned int bufsize;
1188 unsigned char cfs_alg = cksum_obd2cfs(cksum_type);
1190 LASSERT(pg_count > 0);
1192 hdesc = cfs_crypto_hash_init(cfs_alg, NULL, 0);
1193 if (IS_ERR(hdesc)) {
1194 CERROR("Unable to initialize checksum hash %s\n",
1195 cfs_crypto_hash_name(cfs_alg));
1196 return PTR_ERR(hdesc);
1199 while (nob > 0 && pg_count > 0) {
1200 int count = pga[i]->count > nob ? nob : pga[i]->count;
1202 /* corrupt the data before we compute the checksum, to
1203 * simulate an OST->client data error */
1204 if (i == 0 && opc == OST_READ &&
1205 OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_RECEIVE)) {
1206 unsigned char *ptr = cfs_kmap(pga[i]->pg);
1207 int off = pga[i]->off & ~CFS_PAGE_MASK;
1208 memcpy(ptr + off, "bad1", min(4, nob));
1209 cfs_kunmap(pga[i]->pg);
1211 cfs_crypto_hash_update_page(hdesc, pga[i]->pg,
1212 pga[i]->off & ~CFS_PAGE_MASK,
1214 LL_CDEBUG_PAGE(D_PAGE, pga[i]->pg, "off %d checksum %x\n",
1215 (int)(pga[i]->off & ~CFS_PAGE_MASK), cksum);
1217 nob -= pga[i]->count;
1223 err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize);
1226 cfs_crypto_hash_final(hdesc, NULL, NULL);
1228 /* For sending we only compute the wrong checksum instead
1229 * of corrupting the data so it is still correct on a redo */
1230 if (opc == OST_WRITE && OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_SEND))
1236 static int osc_brw_prep_request(int cmd, struct client_obd *cli,struct obdo *oa,
1237 struct lov_stripe_md *lsm, obd_count page_count,
1238 struct brw_page **pga,
1239 struct ptlrpc_request **reqp,
1240 struct obd_capa *ocapa, int reserve,
1243 struct ptlrpc_request *req;
1244 struct ptlrpc_bulk_desc *desc;
1245 struct ost_body *body;
1246 struct obd_ioobj *ioobj;
1247 struct niobuf_remote *niobuf;
1248 int niocount, i, requested_nob, opc, rc;
1249 struct osc_brw_async_args *aa;
1250 struct req_capsule *pill;
1251 struct brw_page *pg_prev;
1254 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ))
1255 RETURN(-ENOMEM); /* Recoverable */
1256 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ2))
1257 RETURN(-EINVAL); /* Fatal */
1259 if ((cmd & OBD_BRW_WRITE) != 0) {
1261 req = ptlrpc_request_alloc_pool(cli->cl_import,
1262 cli->cl_import->imp_rq_pool,
1263 &RQF_OST_BRW_WRITE);
1266 req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_BRW_READ);
1271 for (niocount = i = 1; i < page_count; i++) {
1272 if (!can_merge_pages(pga[i - 1], pga[i]))
1276 pill = &req->rq_pill;
1277 req_capsule_set_size(pill, &RMF_OBD_IOOBJ, RCL_CLIENT,
1279 req_capsule_set_size(pill, &RMF_NIOBUF_REMOTE, RCL_CLIENT,
1280 niocount * sizeof(*niobuf));
1281 osc_set_capa_size(req, &RMF_CAPA1, ocapa);
1283 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, opc);
1285 ptlrpc_request_free(req);
1288 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
1289 ptlrpc_at_set_req_timeout(req);
1290 /* ask ptlrpc not to resend on EINPROGRESS since BRWs have their own
1292 req->rq_no_retry_einprogress = 1;
1294 desc = ptlrpc_prep_bulk_imp(req, page_count,
1295 cli->cl_import->imp_connect_data.ocd_brw_size >> LNET_MTU_BITS,
1296 opc == OST_WRITE ? BULK_GET_SOURCE : BULK_PUT_SINK,
1300 GOTO(out, rc = -ENOMEM);
1301 /* NB request now owns desc and will free it when it gets freed */
1303 body = req_capsule_client_get(pill, &RMF_OST_BODY);
1304 ioobj = req_capsule_client_get(pill, &RMF_OBD_IOOBJ);
1305 niobuf = req_capsule_client_get(pill, &RMF_NIOBUF_REMOTE);
1306 LASSERT(body != NULL && ioobj != NULL && niobuf != NULL);
1308 lustre_set_wire_obdo(&body->oa, oa);
1310 obdo_to_ioobj(oa, ioobj);
1311 ioobj->ioo_bufcnt = niocount;
1312 /* The high bits of ioo_max_brw tells server _maximum_ number of bulks
1313 * that might be send for this request. The actual number is decided
1314 * when the RPC is finally sent in ptlrpc_register_bulk(). It sends
1315 * "max - 1" for old client compatibility sending "0", and also so the
1316 * the actual maximum is a power-of-two number, not one less. LU-1431 */
1317 ioobj_max_brw_set(ioobj, desc->bd_md_max_brw);
1318 osc_pack_capa(req, body, ocapa);
1319 LASSERT(page_count > 0);
1321 for (requested_nob = i = 0; i < page_count; i++, niobuf++) {
1322 struct brw_page *pg = pga[i];
1323 int poff = pg->off & ~CFS_PAGE_MASK;
1325 LASSERT(pg->count > 0);
1326 /* make sure there is no gap in the middle of page array */
1327 LASSERTF(page_count == 1 ||
1328 (ergo(i == 0, poff + pg->count == CFS_PAGE_SIZE) &&
1329 ergo(i > 0 && i < page_count - 1,
1330 poff == 0 && pg->count == CFS_PAGE_SIZE) &&
1331 ergo(i == page_count - 1, poff == 0)),
1332 "i: %d/%d pg: %p off: "LPU64", count: %u\n",
1333 i, page_count, pg, pg->off, pg->count);
1335 LASSERTF(i == 0 || pg->off > pg_prev->off,
1336 "i %d p_c %u pg %p [pri %lu ind %lu] off "LPU64
1337 " prev_pg %p [pri %lu ind %lu] off "LPU64"\n",
1339 pg->pg, page_private(pg->pg), pg->pg->index, pg->off,
1340 pg_prev->pg, page_private(pg_prev->pg),
1341 pg_prev->pg->index, pg_prev->off);
1343 LASSERTF(i == 0 || pg->off > pg_prev->off,
1344 "i %d p_c %u\n", i, page_count);
1346 LASSERT((pga[0]->flag & OBD_BRW_SRVLOCK) ==
1347 (pg->flag & OBD_BRW_SRVLOCK));
1349 ptlrpc_prep_bulk_page_pin(desc, pg->pg, poff, pg->count);
1350 requested_nob += pg->count;
1352 if (i > 0 && can_merge_pages(pg_prev, pg)) {
1354 niobuf->len += pg->count;
1356 niobuf->offset = pg->off;
1357 niobuf->len = pg->count;
1358 niobuf->flags = pg->flag;
1363 LASSERTF((void *)(niobuf - niocount) ==
1364 req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE),
1365 "want %p - real %p\n", req_capsule_client_get(&req->rq_pill,
1366 &RMF_NIOBUF_REMOTE), (void *)(niobuf - niocount));
1368 osc_announce_cached(cli, &body->oa, opc == OST_WRITE ? requested_nob:0);
1370 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
1371 body->oa.o_valid |= OBD_MD_FLFLAGS;
1372 body->oa.o_flags = 0;
1374 body->oa.o_flags |= OBD_FL_RECOV_RESEND;
1377 if (osc_should_shrink_grant(cli))
1378 osc_shrink_grant_local(cli, &body->oa);
1380 /* size[REQ_REC_OFF] still sizeof (*body) */
1381 if (opc == OST_WRITE) {
1382 if (cli->cl_checksum &&
1383 !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
1384 /* store cl_cksum_type in a local variable since
1385 * it can be changed via lprocfs */
1386 cksum_type_t cksum_type = cli->cl_cksum_type;
1388 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
1389 oa->o_flags &= OBD_FL_LOCAL_MASK;
1390 body->oa.o_flags = 0;
1392 body->oa.o_flags |= cksum_type_pack(cksum_type);
1393 body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1394 body->oa.o_cksum = osc_checksum_bulk(requested_nob,
1398 CDEBUG(D_PAGE, "checksum at write origin: %x\n",
1400 /* save this in 'oa', too, for later checking */
1401 oa->o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1402 oa->o_flags |= cksum_type_pack(cksum_type);
1404 /* clear out the checksum flag, in case this is a
1405 * resend but cl_checksum is no longer set. b=11238 */
1406 oa->o_valid &= ~OBD_MD_FLCKSUM;
1408 oa->o_cksum = body->oa.o_cksum;
1409 /* 1 RC per niobuf */
1410 req_capsule_set_size(pill, &RMF_RCS, RCL_SERVER,
1411 sizeof(__u32) * niocount);
1413 if (cli->cl_checksum &&
1414 !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
1415 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0)
1416 body->oa.o_flags = 0;
1417 body->oa.o_flags |= cksum_type_pack(cli->cl_cksum_type);
1418 body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1421 ptlrpc_request_set_replen(req);
1423 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
1424 aa = ptlrpc_req_async_args(req);
1426 aa->aa_requested_nob = requested_nob;
1427 aa->aa_nio_count = niocount;
1428 aa->aa_page_count = page_count;
1432 CFS_INIT_LIST_HEAD(&aa->aa_oaps);
1433 if (ocapa && reserve)
1434 aa->aa_ocapa = capa_get(ocapa);
1440 ptlrpc_req_finished(req);
1444 static int check_write_checksum(struct obdo *oa, const lnet_process_id_t *peer,
1445 __u32 client_cksum, __u32 server_cksum, int nob,
1446 obd_count page_count, struct brw_page **pga,
1447 cksum_type_t client_cksum_type)
1451 cksum_type_t cksum_type;
1453 if (server_cksum == client_cksum) {
1454 CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
1458 cksum_type = cksum_type_unpack(oa->o_valid & OBD_MD_FLFLAGS ?
1460 new_cksum = osc_checksum_bulk(nob, page_count, pga, OST_WRITE,
1463 if (cksum_type != client_cksum_type)
1464 msg = "the server did not use the checksum type specified in "
1465 "the original request - likely a protocol problem";
1466 else if (new_cksum == server_cksum)
1467 msg = "changed on the client after we checksummed it - "
1468 "likely false positive due to mmap IO (bug 11742)";
1469 else if (new_cksum == client_cksum)
1470 msg = "changed in transit before arrival at OST";
1472 msg = "changed in transit AND doesn't match the original - "
1473 "likely false positive due to mmap IO (bug 11742)";
1475 LCONSOLE_ERROR_MSG(0x132, "BAD WRITE CHECKSUM: %s: from %s inode "DFID
1476 " object "LPU64"/"LPU64" extent ["LPU64"-"LPU64"]\n",
1477 msg, libcfs_nid2str(peer->nid),
1478 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : (__u64)0,
1479 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0,
1480 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0,
1482 oa->o_valid & OBD_MD_FLGROUP ? oa->o_seq : (__u64)0,
1484 pga[page_count-1]->off + pga[page_count-1]->count - 1);
1485 CERROR("original client csum %x (type %x), server csum %x (type %x), "
1486 "client csum now %x\n", client_cksum, client_cksum_type,
1487 server_cksum, cksum_type, new_cksum);
1491 /* Note rc enters this function as number of bytes transferred */
1492 static int osc_brw_fini_request(struct ptlrpc_request *req, int rc)
1494 struct osc_brw_async_args *aa = (void *)&req->rq_async_args;
1495 const lnet_process_id_t *peer =
1496 &req->rq_import->imp_connection->c_peer;
1497 struct client_obd *cli = aa->aa_cli;
1498 struct ost_body *body;
1499 __u32 client_cksum = 0;
1502 if (rc < 0 && rc != -EDQUOT) {
1503 DEBUG_REQ(D_INFO, req, "Failed request with rc = %d\n", rc);
1507 LASSERTF(req->rq_repmsg != NULL, "rc = %d\n", rc);
1508 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
1510 DEBUG_REQ(D_INFO, req, "Can't unpack body\n");
1514 /* set/clear over quota flag for a uid/gid */
1515 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE &&
1516 body->oa.o_valid & (OBD_MD_FLUSRQUOTA | OBD_MD_FLGRPQUOTA)) {
1517 unsigned int qid[MAXQUOTAS] = { body->oa.o_uid, body->oa.o_gid };
1519 CDEBUG(D_QUOTA, "setdq for [%u %u] with valid "LPX64", flags %x\n",
1520 body->oa.o_uid, body->oa.o_gid, body->oa.o_valid,
1522 osc_quota_setdq(cli, qid, body->oa.o_valid, body->oa.o_flags);
1525 osc_update_grant(cli, body);
1530 if (aa->aa_oa->o_valid & OBD_MD_FLCKSUM)
1531 client_cksum = aa->aa_oa->o_cksum; /* save for later */
1533 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) {
1535 CERROR("Unexpected +ve rc %d\n", rc);
1538 LASSERT(req->rq_bulk->bd_nob == aa->aa_requested_nob);
1540 if (sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk))
1543 if ((aa->aa_oa->o_valid & OBD_MD_FLCKSUM) && client_cksum &&
1544 check_write_checksum(&body->oa, peer, client_cksum,
1545 body->oa.o_cksum, aa->aa_requested_nob,
1546 aa->aa_page_count, aa->aa_ppga,
1547 cksum_type_unpack(aa->aa_oa->o_flags)))
1550 rc = check_write_rcs(req, aa->aa_requested_nob,aa->aa_nio_count,
1551 aa->aa_page_count, aa->aa_ppga);
1555 /* The rest of this function executes only for OST_READs */
1557 /* if unwrap_bulk failed, return -EAGAIN to retry */
1558 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk, rc);
1560 GOTO(out, rc = -EAGAIN);
1562 if (rc > aa->aa_requested_nob) {
1563 CERROR("Unexpected rc %d (%d requested)\n", rc,
1564 aa->aa_requested_nob);
1568 if (rc != req->rq_bulk->bd_nob_transferred) {
1569 CERROR ("Unexpected rc %d (%d transferred)\n",
1570 rc, req->rq_bulk->bd_nob_transferred);
1574 if (rc < aa->aa_requested_nob)
1575 handle_short_read(rc, aa->aa_page_count, aa->aa_ppga);
1577 if (body->oa.o_valid & OBD_MD_FLCKSUM) {
1578 static int cksum_counter;
1579 __u32 server_cksum = body->oa.o_cksum;
1582 cksum_type_t cksum_type;
1584 cksum_type = cksum_type_unpack(body->oa.o_valid &OBD_MD_FLFLAGS?
1585 body->oa.o_flags : 0);
1586 client_cksum = osc_checksum_bulk(rc, aa->aa_page_count,
1587 aa->aa_ppga, OST_READ,
1590 if (peer->nid == req->rq_bulk->bd_sender) {
1594 router = libcfs_nid2str(req->rq_bulk->bd_sender);
1597 if (server_cksum == ~0 && rc > 0) {
1598 CERROR("Protocol error: server %s set the 'checksum' "
1599 "bit, but didn't send a checksum. Not fatal, "
1600 "but please notify on http://bugs.whamcloud.com/\n",
1601 libcfs_nid2str(peer->nid));
1602 } else if (server_cksum != client_cksum) {
1603 LCONSOLE_ERROR_MSG(0x133, "%s: BAD READ CHECKSUM: from "
1604 "%s%s%s inode "DFID" object "
1605 LPU64"/"LPU64" extent "
1606 "["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,
1617 body->oa.o_valid & OBD_MD_FLGROUP ?
1618 body->oa.o_seq : (__u64)0,
1619 aa->aa_ppga[0]->off,
1620 aa->aa_ppga[aa->aa_page_count-1]->off +
1621 aa->aa_ppga[aa->aa_page_count-1]->count -
1623 CERROR("client %x, server %x, cksum_type %x\n",
1624 client_cksum, server_cksum, cksum_type);
1626 aa->aa_oa->o_cksum = client_cksum;
1630 CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
1633 } else if (unlikely(client_cksum)) {
1634 static int cksum_missed;
1637 if ((cksum_missed & (-cksum_missed)) == cksum_missed)
1638 CERROR("Checksum %u requested from %s but not sent\n",
1639 cksum_missed, libcfs_nid2str(peer->nid));
1645 lustre_get_wire_obdo(aa->aa_oa, &body->oa);
1650 static int osc_brw_internal(int cmd, struct obd_export *exp, struct obdo *oa,
1651 struct lov_stripe_md *lsm,
1652 obd_count page_count, struct brw_page **pga,
1653 struct obd_capa *ocapa)
1655 struct ptlrpc_request *req;
1658 int generation, resends = 0;
1659 struct l_wait_info lwi;
1663 cfs_waitq_init(&waitq);
1664 generation = exp->exp_obd->u.cli.cl_import->imp_generation;
1667 rc = osc_brw_prep_request(cmd, &exp->exp_obd->u.cli, oa, lsm,
1668 page_count, pga, &req, ocapa, 0, resends);
1673 req->rq_generation_set = 1;
1674 req->rq_import_generation = generation;
1675 req->rq_sent = cfs_time_current_sec() + resends;
1678 rc = ptlrpc_queue_wait(req);
1680 if (rc == -ETIMEDOUT && req->rq_resend) {
1681 DEBUG_REQ(D_HA, req, "BULK TIMEOUT");
1682 ptlrpc_req_finished(req);
1686 rc = osc_brw_fini_request(req, rc);
1688 ptlrpc_req_finished(req);
1689 /* When server return -EINPROGRESS, client should always retry
1690 * regardless of the number of times the bulk was resent already.*/
1691 if (osc_recoverable_error(rc)) {
1693 if (rc != -EINPROGRESS &&
1694 !client_should_resend(resends, &exp->exp_obd->u.cli)) {
1695 CERROR("%s: too many resend retries for object: "
1696 ""LPU64":"LPU64", rc = %d.\n",
1697 exp->exp_obd->obd_name, oa->o_id, oa->o_seq, rc);
1701 exp->exp_obd->u.cli.cl_import->imp_generation) {
1702 CDEBUG(D_HA, "%s: resend cross eviction for object: "
1703 ""LPU64":"LPU64", rc = %d.\n",
1704 exp->exp_obd->obd_name, oa->o_id, oa->o_seq, rc);
1708 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL,
1710 l_wait_event(waitq, 0, &lwi);
1715 if (rc == -EAGAIN || rc == -EINPROGRESS)
1720 static int osc_brw_redo_request(struct ptlrpc_request *request,
1721 struct osc_brw_async_args *aa, int rc)
1723 struct ptlrpc_request *new_req;
1724 struct osc_brw_async_args *new_aa;
1725 struct osc_async_page *oap;
1728 DEBUG_REQ(rc == -EINPROGRESS ? D_RPCTRACE : D_ERROR, request,
1729 "redo for recoverable error %d", rc);
1731 rc = osc_brw_prep_request(lustre_msg_get_opc(request->rq_reqmsg) ==
1732 OST_WRITE ? OBD_BRW_WRITE :OBD_BRW_READ,
1733 aa->aa_cli, aa->aa_oa,
1734 NULL /* lsm unused by osc currently */,
1735 aa->aa_page_count, aa->aa_ppga,
1736 &new_req, aa->aa_ocapa, 0, 1);
1740 cfs_list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
1741 if (oap->oap_request != NULL) {
1742 LASSERTF(request == oap->oap_request,
1743 "request %p != oap_request %p\n",
1744 request, oap->oap_request);
1745 if (oap->oap_interrupted) {
1746 ptlrpc_req_finished(new_req);
1751 /* New request takes over pga and oaps from old request.
1752 * Note that copying a list_head doesn't work, need to move it... */
1754 new_req->rq_interpret_reply = request->rq_interpret_reply;
1755 new_req->rq_async_args = request->rq_async_args;
1756 /* cap resend delay to the current request timeout, this is similar to
1757 * what ptlrpc does (see after_reply()) */
1758 if (aa->aa_resends > new_req->rq_timeout)
1759 new_req->rq_sent = cfs_time_current_sec() + new_req->rq_timeout;
1761 new_req->rq_sent = cfs_time_current_sec() + aa->aa_resends;
1762 new_req->rq_generation_set = 1;
1763 new_req->rq_import_generation = request->rq_import_generation;
1765 new_aa = ptlrpc_req_async_args(new_req);
1767 CFS_INIT_LIST_HEAD(&new_aa->aa_oaps);
1768 cfs_list_splice_init(&aa->aa_oaps, &new_aa->aa_oaps);
1769 CFS_INIT_LIST_HEAD(&new_aa->aa_exts);
1770 cfs_list_splice_init(&aa->aa_exts, &new_aa->aa_exts);
1771 new_aa->aa_resends = aa->aa_resends;
1773 cfs_list_for_each_entry(oap, &new_aa->aa_oaps, oap_rpc_item) {
1774 if (oap->oap_request) {
1775 ptlrpc_req_finished(oap->oap_request);
1776 oap->oap_request = ptlrpc_request_addref(new_req);
1780 new_aa->aa_ocapa = aa->aa_ocapa;
1781 aa->aa_ocapa = NULL;
1783 /* XXX: This code will run into problem if we're going to support
1784 * to add a series of BRW RPCs into a self-defined ptlrpc_request_set
1785 * and wait for all of them to be finished. We should inherit request
1786 * set from old request. */
1787 ptlrpcd_add_req(new_req, PDL_POLICY_SAME, -1);
1789 DEBUG_REQ(D_INFO, new_req, "new request");
1794 * ugh, we want disk allocation on the target to happen in offset order. we'll
1795 * follow sedgewicks advice and stick to the dead simple shellsort -- it'll do
1796 * fine for our small page arrays and doesn't require allocation. its an
1797 * insertion sort that swaps elements that are strides apart, shrinking the
1798 * stride down until its '1' and the array is sorted.
1800 static void sort_brw_pages(struct brw_page **array, int num)
1803 struct brw_page *tmp;
1807 for (stride = 1; stride < num ; stride = (stride * 3) + 1)
1812 for (i = stride ; i < num ; i++) {
1815 while (j >= stride && array[j - stride]->off > tmp->off) {
1816 array[j] = array[j - stride];
1821 } while (stride > 1);
1824 static obd_count max_unfragmented_pages(struct brw_page **pg, obd_count pages)
1830 LASSERT (pages > 0);
1831 offset = pg[i]->off & ~CFS_PAGE_MASK;
1835 if (pages == 0) /* that's all */
1838 if (offset + pg[i]->count < CFS_PAGE_SIZE)
1839 return count; /* doesn't end on page boundary */
1842 offset = pg[i]->off & ~CFS_PAGE_MASK;
1843 if (offset != 0) /* doesn't start on page boundary */
1850 static struct brw_page **osc_build_ppga(struct brw_page *pga, obd_count count)
1852 struct brw_page **ppga;
1855 OBD_ALLOC(ppga, sizeof(*ppga) * count);
1859 for (i = 0; i < count; i++)
1864 static void osc_release_ppga(struct brw_page **ppga, obd_count count)
1866 LASSERT(ppga != NULL);
1867 OBD_FREE(ppga, sizeof(*ppga) * count);
1870 static int osc_brw(int cmd, struct obd_export *exp, struct obd_info *oinfo,
1871 obd_count page_count, struct brw_page *pga,
1872 struct obd_trans_info *oti)
1874 struct obdo *saved_oa = NULL;
1875 struct brw_page **ppga, **orig;
1876 struct obd_import *imp = class_exp2cliimp(exp);
1877 struct client_obd *cli;
1878 int rc, page_count_orig;
1881 LASSERT((imp != NULL) && (imp->imp_obd != NULL));
1882 cli = &imp->imp_obd->u.cli;
1884 if (cmd & OBD_BRW_CHECK) {
1885 /* The caller just wants to know if there's a chance that this
1886 * I/O can succeed */
1888 if (imp->imp_invalid)
1893 /* test_brw with a failed create can trip this, maybe others. */
1894 LASSERT(cli->cl_max_pages_per_rpc);
1898 orig = ppga = osc_build_ppga(pga, page_count);
1901 page_count_orig = page_count;
1903 sort_brw_pages(ppga, page_count);
1904 while (page_count) {
1905 obd_count pages_per_brw;
1907 if (page_count > cli->cl_max_pages_per_rpc)
1908 pages_per_brw = cli->cl_max_pages_per_rpc;
1910 pages_per_brw = page_count;
1912 pages_per_brw = max_unfragmented_pages(ppga, pages_per_brw);
1914 if (saved_oa != NULL) {
1915 /* restore previously saved oa */
1916 *oinfo->oi_oa = *saved_oa;
1917 } else if (page_count > pages_per_brw) {
1918 /* save a copy of oa (brw will clobber it) */
1919 OBDO_ALLOC(saved_oa);
1920 if (saved_oa == NULL)
1921 GOTO(out, rc = -ENOMEM);
1922 *saved_oa = *oinfo->oi_oa;
1925 rc = osc_brw_internal(cmd, exp, oinfo->oi_oa, oinfo->oi_md,
1926 pages_per_brw, ppga, oinfo->oi_capa);
1931 page_count -= pages_per_brw;
1932 ppga += pages_per_brw;
1936 osc_release_ppga(orig, page_count_orig);
1938 if (saved_oa != NULL)
1939 OBDO_FREE(saved_oa);
1944 static int brw_interpret(const struct lu_env *env,
1945 struct ptlrpc_request *req, void *data, int rc)
1947 struct osc_brw_async_args *aa = data;
1948 struct osc_extent *ext;
1949 struct osc_extent *tmp;
1950 struct cl_object *obj = NULL;
1951 struct client_obd *cli = aa->aa_cli;
1954 rc = osc_brw_fini_request(req, rc);
1955 CDEBUG(D_INODE, "request %p aa %p rc %d\n", req, aa, rc);
1956 /* When server return -EINPROGRESS, client should always retry
1957 * regardless of the number of times the bulk was resent already. */
1958 if (osc_recoverable_error(rc)) {
1959 if (req->rq_import_generation !=
1960 req->rq_import->imp_generation) {
1961 CDEBUG(D_HA, "%s: resend cross eviction for object: "
1962 ""LPU64":"LPU64", rc = %d.\n",
1963 req->rq_import->imp_obd->obd_name,
1964 aa->aa_oa->o_id, aa->aa_oa->o_seq, rc);
1965 } else if (rc == -EINPROGRESS ||
1966 client_should_resend(aa->aa_resends, aa->aa_cli)) {
1967 rc = osc_brw_redo_request(req, aa, rc);
1969 CERROR("%s: too many resent retries for object: "
1970 ""LPU64":"LPU64", rc = %d.\n",
1971 req->rq_import->imp_obd->obd_name,
1972 aa->aa_oa->o_id, aa->aa_oa->o_seq, rc);
1977 else if (rc == -EAGAIN || rc == -EINPROGRESS)
1982 capa_put(aa->aa_ocapa);
1983 aa->aa_ocapa = NULL;
1986 cfs_list_for_each_entry_safe(ext, tmp, &aa->aa_exts, oe_link) {
1987 if (obj == NULL && rc == 0) {
1988 obj = osc2cl(ext->oe_obj);
1992 cfs_list_del_init(&ext->oe_link);
1993 osc_extent_finish(env, ext, 1, rc);
1995 LASSERT(cfs_list_empty(&aa->aa_exts));
1996 LASSERT(cfs_list_empty(&aa->aa_oaps));
1999 struct obdo *oa = aa->aa_oa;
2000 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
2001 unsigned long valid = 0;
2004 if (oa->o_valid & OBD_MD_FLBLOCKS) {
2005 attr->cat_blocks = oa->o_blocks;
2006 valid |= CAT_BLOCKS;
2008 if (oa->o_valid & OBD_MD_FLMTIME) {
2009 attr->cat_mtime = oa->o_mtime;
2012 if (oa->o_valid & OBD_MD_FLATIME) {
2013 attr->cat_atime = oa->o_atime;
2016 if (oa->o_valid & OBD_MD_FLCTIME) {
2017 attr->cat_ctime = oa->o_ctime;
2021 cl_object_attr_lock(obj);
2022 cl_object_attr_set(env, obj, attr, valid);
2023 cl_object_attr_unlock(obj);
2025 cl_object_put(env, obj);
2027 OBDO_FREE(aa->aa_oa);
2029 cl_req_completion(env, aa->aa_clerq, rc < 0 ? rc :
2030 req->rq_bulk->bd_nob_transferred);
2031 osc_release_ppga(aa->aa_ppga, aa->aa_page_count);
2032 ptlrpc_lprocfs_brw(req, req->rq_bulk->bd_nob_transferred);
2034 client_obd_list_lock(&cli->cl_loi_list_lock);
2035 /* We need to decrement before osc_ap_completion->osc_wake_cache_waiters
2036 * is called so we know whether to go to sync BRWs or wait for more
2037 * RPCs to complete */
2038 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE)
2039 cli->cl_w_in_flight--;
2041 cli->cl_r_in_flight--;
2042 osc_wake_cache_waiters(cli);
2043 client_obd_list_unlock(&cli->cl_loi_list_lock);
2045 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
2050 * Build an RPC by the list of extent @ext_list. The caller must ensure
2051 * that the total pages in this list are NOT over max pages per RPC.
2052 * Extents in the list must be in OES_RPC state.
2054 int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
2055 cfs_list_t *ext_list, int cmd, pdl_policy_t pol)
2057 struct ptlrpc_request *req = NULL;
2058 struct osc_extent *ext;
2059 CFS_LIST_HEAD(rpc_list);
2060 struct brw_page **pga = NULL;
2061 struct osc_brw_async_args *aa = NULL;
2062 struct obdo *oa = NULL;
2063 struct osc_async_page *oap;
2064 struct osc_async_page *tmp;
2065 struct cl_req *clerq = NULL;
2066 enum cl_req_type crt = (cmd & OBD_BRW_WRITE) ? CRT_WRITE : CRT_READ;
2067 struct ldlm_lock *lock = NULL;
2068 struct cl_req_attr crattr;
2069 obd_off starting_offset = OBD_OBJECT_EOF;
2070 obd_off ending_offset = 0;
2071 int i, rc, mpflag = 0, mem_tight = 0, page_count = 0;
2074 LASSERT(!cfs_list_empty(ext_list));
2076 /* add pages into rpc_list to build BRW rpc */
2077 cfs_list_for_each_entry(ext, ext_list, oe_link) {
2078 LASSERT(ext->oe_state == OES_RPC);
2079 mem_tight |= ext->oe_memalloc;
2080 cfs_list_for_each_entry(oap, &ext->oe_pages, oap_pending_item) {
2082 cfs_list_add_tail(&oap->oap_rpc_item, &rpc_list);
2083 if (starting_offset > oap->oap_obj_off)
2084 starting_offset = oap->oap_obj_off;
2086 LASSERT(oap->oap_page_off == 0);
2087 if (ending_offset < oap->oap_obj_off + oap->oap_count)
2088 ending_offset = oap->oap_obj_off +
2091 LASSERT(oap->oap_page_off + oap->oap_count ==
2097 mpflag = cfs_memory_pressure_get_and_set();
2099 memset(&crattr, 0, sizeof crattr);
2100 OBD_ALLOC(pga, sizeof(*pga) * page_count);
2102 GOTO(out, rc = -ENOMEM);
2106 GOTO(out, rc = -ENOMEM);
2109 cfs_list_for_each_entry(oap, &rpc_list, oap_rpc_item) {
2110 struct cl_page *page = oap2cl_page(oap);
2111 if (clerq == NULL) {
2112 clerq = cl_req_alloc(env, page, crt,
2113 1 /* only 1-object rpcs for
2116 GOTO(out, rc = PTR_ERR(clerq));
2117 lock = oap->oap_ldlm_lock;
2120 oap->oap_brw_flags |= OBD_BRW_MEMALLOC;
2121 pga[i] = &oap->oap_brw_page;
2122 pga[i]->off = oap->oap_obj_off + oap->oap_page_off;
2123 CDEBUG(0, "put page %p index %lu oap %p flg %x to pga\n",
2124 pga[i]->pg, cfs_page_index(oap->oap_page), oap, pga[i]->flag);
2126 cl_req_page_add(env, clerq, page);
2129 /* always get the data for the obdo for the rpc */
2130 LASSERT(clerq != NULL);
2132 crattr.cra_capa = NULL;
2133 memset(crattr.cra_jobid, 0, JOBSTATS_JOBID_SIZE);
2134 cl_req_attr_set(env, clerq, &crattr, ~0ULL);
2136 oa->o_handle = lock->l_remote_handle;
2137 oa->o_valid |= OBD_MD_FLHANDLE;
2140 rc = cl_req_prep(env, clerq);
2142 CERROR("cl_req_prep failed: %d\n", rc);
2146 sort_brw_pages(pga, page_count);
2147 rc = osc_brw_prep_request(cmd, cli, oa, NULL, page_count,
2148 pga, &req, crattr.cra_capa, 1, 0);
2150 CERROR("prep_req failed: %d\n", rc);
2154 req->rq_interpret_reply = brw_interpret;
2156 req->rq_memalloc = 1;
2158 /* Need to update the timestamps after the request is built in case
2159 * we race with setattr (locally or in queue at OST). If OST gets
2160 * later setattr before earlier BRW (as determined by the request xid),
2161 * the OST will not use BRW timestamps. Sadly, there is no obvious
2162 * way to do this in a single call. bug 10150 */
2163 cl_req_attr_set(env, clerq, &crattr,
2164 OBD_MD_FLMTIME|OBD_MD_FLCTIME|OBD_MD_FLATIME);
2166 lustre_msg_set_jobid(req->rq_reqmsg, crattr.cra_jobid);
2168 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
2169 aa = ptlrpc_req_async_args(req);
2170 CFS_INIT_LIST_HEAD(&aa->aa_oaps);
2171 cfs_list_splice_init(&rpc_list, &aa->aa_oaps);
2172 CFS_INIT_LIST_HEAD(&aa->aa_exts);
2173 cfs_list_splice_init(ext_list, &aa->aa_exts);
2174 aa->aa_clerq = clerq;
2176 /* queued sync pages can be torn down while the pages
2177 * were between the pending list and the rpc */
2179 cfs_list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
2180 /* only one oap gets a request reference */
2183 if (oap->oap_interrupted && !req->rq_intr) {
2184 CDEBUG(D_INODE, "oap %p in req %p interrupted\n",
2186 ptlrpc_mark_interrupted(req);
2190 tmp->oap_request = ptlrpc_request_addref(req);
2192 client_obd_list_lock(&cli->cl_loi_list_lock);
2193 starting_offset >>= CFS_PAGE_SHIFT;
2194 if (cmd == OBD_BRW_READ) {
2195 cli->cl_r_in_flight++;
2196 lprocfs_oh_tally_log2(&cli->cl_read_page_hist, page_count);
2197 lprocfs_oh_tally(&cli->cl_read_rpc_hist, cli->cl_r_in_flight);
2198 lprocfs_oh_tally_log2(&cli->cl_read_offset_hist,
2199 starting_offset + 1);
2201 cli->cl_w_in_flight++;
2202 lprocfs_oh_tally_log2(&cli->cl_write_page_hist, page_count);
2203 lprocfs_oh_tally(&cli->cl_write_rpc_hist, cli->cl_w_in_flight);
2204 lprocfs_oh_tally_log2(&cli->cl_write_offset_hist,
2205 starting_offset + 1);
2207 client_obd_list_unlock(&cli->cl_loi_list_lock);
2209 DEBUG_REQ(D_INODE, req, "%d pages, aa %p. now %dr/%dw in flight",
2210 page_count, aa, cli->cl_r_in_flight,
2211 cli->cl_w_in_flight);
2213 /* XXX: Maybe the caller can check the RPC bulk descriptor to
2214 * see which CPU/NUMA node the majority of pages were allocated
2215 * on, and try to assign the async RPC to the CPU core
2216 * (PDL_POLICY_PREFERRED) to reduce cross-CPU memory traffic.
2218 * But on the other hand, we expect that multiple ptlrpcd
2219 * threads and the initial write sponsor can run in parallel,
2220 * especially when data checksum is enabled, which is CPU-bound
2221 * operation and single ptlrpcd thread cannot process in time.
2222 * So more ptlrpcd threads sharing BRW load
2223 * (with PDL_POLICY_ROUND) seems better.
2225 ptlrpcd_add_req(req, pol, -1);
2231 cfs_memory_pressure_restore(mpflag);
2233 capa_put(crattr.cra_capa);
2235 LASSERT(req == NULL);
2240 OBD_FREE(pga, sizeof(*pga) * page_count);
2241 /* this should happen rarely and is pretty bad, it makes the
2242 * pending list not follow the dirty order */
2243 while (!cfs_list_empty(ext_list)) {
2244 ext = cfs_list_entry(ext_list->next, struct osc_extent,
2246 cfs_list_del_init(&ext->oe_link);
2247 osc_extent_finish(env, ext, 0, rc);
2249 if (clerq && !IS_ERR(clerq))
2250 cl_req_completion(env, clerq, rc);
2255 static int osc_set_lock_data_with_check(struct ldlm_lock *lock,
2256 struct ldlm_enqueue_info *einfo)
2258 void *data = einfo->ei_cbdata;
2261 LASSERT(lock != NULL);
2262 LASSERT(lock->l_blocking_ast == einfo->ei_cb_bl);
2263 LASSERT(lock->l_resource->lr_type == einfo->ei_type);
2264 LASSERT(lock->l_completion_ast == einfo->ei_cb_cp);
2265 LASSERT(lock->l_glimpse_ast == einfo->ei_cb_gl);
2267 lock_res_and_lock(lock);
2268 spin_lock(&osc_ast_guard);
2270 if (lock->l_ast_data == NULL)
2271 lock->l_ast_data = data;
2272 if (lock->l_ast_data == data)
2275 spin_unlock(&osc_ast_guard);
2276 unlock_res_and_lock(lock);
2281 static int osc_set_data_with_check(struct lustre_handle *lockh,
2282 struct ldlm_enqueue_info *einfo)
2284 struct ldlm_lock *lock = ldlm_handle2lock(lockh);
2288 set = osc_set_lock_data_with_check(lock, einfo);
2289 LDLM_LOCK_PUT(lock);
2291 CERROR("lockh %p, data %p - client evicted?\n",
2292 lockh, einfo->ei_cbdata);
2296 static int osc_change_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
2297 ldlm_iterator_t replace, void *data)
2299 struct ldlm_res_id res_id;
2300 struct obd_device *obd = class_exp2obd(exp);
2302 ostid_build_res_name(&lsm->lsm_oi, &res_id);
2303 ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
2307 /* find any ldlm lock of the inode in osc
2311 static int osc_find_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);
2318 ostid_build_res_name(&lsm->lsm_oi, &res_id);
2319 rc = ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
2320 if (rc == LDLM_ITER_STOP)
2322 if (rc == LDLM_ITER_CONTINUE)
2327 static int osc_enqueue_fini(struct ptlrpc_request *req, struct ost_lvb *lvb,
2328 obd_enqueue_update_f upcall, void *cookie,
2329 __u64 *flags, int agl, int rc)
2331 int intent = *flags & LDLM_FL_HAS_INTENT;
2335 /* The request was created before ldlm_cli_enqueue call. */
2336 if (rc == ELDLM_LOCK_ABORTED) {
2337 struct ldlm_reply *rep;
2338 rep = req_capsule_server_get(&req->rq_pill,
2341 LASSERT(rep != NULL);
2342 if (rep->lock_policy_res1)
2343 rc = rep->lock_policy_res1;
2347 if ((intent != 0 && rc == ELDLM_LOCK_ABORTED && agl == 0) ||
2349 *flags |= LDLM_FL_LVB_READY;
2350 CDEBUG(D_INODE,"got kms "LPU64" blocks "LPU64" mtime "LPU64"\n",
2351 lvb->lvb_size, lvb->lvb_blocks, lvb->lvb_mtime);
2354 /* Call the update callback. */
2355 rc = (*upcall)(cookie, rc);
2359 static int osc_enqueue_interpret(const struct lu_env *env,
2360 struct ptlrpc_request *req,
2361 struct osc_enqueue_args *aa, int rc)
2363 struct ldlm_lock *lock;
2364 struct lustre_handle handle;
2366 struct ost_lvb *lvb;
2368 __u64 *flags = aa->oa_flags;
2370 /* Make a local copy of a lock handle and a mode, because aa->oa_*
2371 * might be freed anytime after lock upcall has been called. */
2372 lustre_handle_copy(&handle, aa->oa_lockh);
2373 mode = aa->oa_ei->ei_mode;
2375 /* ldlm_cli_enqueue is holding a reference on the lock, so it must
2377 lock = ldlm_handle2lock(&handle);
2379 /* Take an additional reference so that a blocking AST that
2380 * ldlm_cli_enqueue_fini() might post for a failed lock, is guaranteed
2381 * to arrive after an upcall has been executed by
2382 * osc_enqueue_fini(). */
2383 ldlm_lock_addref(&handle, mode);
2385 /* Let CP AST to grant the lock first. */
2386 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_ENQ_RACE, 1);
2388 if (aa->oa_agl && rc == ELDLM_LOCK_ABORTED) {
2393 lvb_len = sizeof(*aa->oa_lvb);
2396 /* Complete obtaining the lock procedure. */
2397 rc = ldlm_cli_enqueue_fini(aa->oa_exp, req, aa->oa_ei->ei_type, 1,
2398 mode, flags, lvb, lvb_len, &handle, rc);
2399 /* Complete osc stuff. */
2400 rc = osc_enqueue_fini(req, aa->oa_lvb, aa->oa_upcall, aa->oa_cookie,
2401 flags, aa->oa_agl, rc);
2403 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_CANCEL_RACE, 10);
2405 /* Release the lock for async request. */
2406 if (lustre_handle_is_used(&handle) && rc == ELDLM_OK)
2408 * Releases a reference taken by ldlm_cli_enqueue(), if it is
2409 * not already released by
2410 * ldlm_cli_enqueue_fini()->failed_lock_cleanup()
2412 ldlm_lock_decref(&handle, mode);
2414 LASSERTF(lock != NULL, "lockh %p, req %p, aa %p - client evicted?\n",
2415 aa->oa_lockh, req, aa);
2416 ldlm_lock_decref(&handle, mode);
2417 LDLM_LOCK_PUT(lock);
2421 void osc_update_enqueue(struct lustre_handle *lov_lockhp,
2422 struct lov_oinfo *loi, int flags,
2423 struct ost_lvb *lvb, __u32 mode, int rc)
2425 struct ldlm_lock *lock = ldlm_handle2lock(lov_lockhp);
2427 if (rc == ELDLM_OK) {
2430 LASSERT(lock != NULL);
2431 loi->loi_lvb = *lvb;
2432 tmp = loi->loi_lvb.lvb_size;
2433 /* Extend KMS up to the end of this lock and no further
2434 * A lock on [x,y] means a KMS of up to y + 1 bytes! */
2435 if (tmp > lock->l_policy_data.l_extent.end)
2436 tmp = lock->l_policy_data.l_extent.end + 1;
2437 if (tmp >= loi->loi_kms) {
2438 LDLM_DEBUG(lock, "lock acquired, setting rss="LPU64
2439 ", kms="LPU64, loi->loi_lvb.lvb_size, tmp);
2440 loi_kms_set(loi, tmp);
2442 LDLM_DEBUG(lock, "lock acquired, setting rss="
2443 LPU64"; leaving kms="LPU64", end="LPU64,
2444 loi->loi_lvb.lvb_size, loi->loi_kms,
2445 lock->l_policy_data.l_extent.end);
2447 ldlm_lock_allow_match(lock);
2448 } else if (rc == ELDLM_LOCK_ABORTED && (flags & LDLM_FL_HAS_INTENT)) {
2449 LASSERT(lock != NULL);
2450 loi->loi_lvb = *lvb;
2451 ldlm_lock_allow_match(lock);
2452 CDEBUG(D_INODE, "glimpsed, setting rss="LPU64"; leaving"
2453 " kms="LPU64"\n", loi->loi_lvb.lvb_size, loi->loi_kms);
2459 ldlm_lock_fail_match(lock);
2461 LDLM_LOCK_PUT(lock);
2464 EXPORT_SYMBOL(osc_update_enqueue);
2466 struct ptlrpc_request_set *PTLRPCD_SET = (void *)1;
2468 /* When enqueuing asynchronously, locks are not ordered, we can obtain a lock
2469 * from the 2nd OSC before a lock from the 1st one. This does not deadlock with
2470 * other synchronous requests, however keeping some locks and trying to obtain
2471 * others may take a considerable amount of time in a case of ost failure; and
2472 * when other sync requests do not get released lock from a client, the client
2473 * is excluded from the cluster -- such scenarious make the life difficult, so
2474 * release locks just after they are obtained. */
2475 int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2476 __u64 *flags, ldlm_policy_data_t *policy,
2477 struct ost_lvb *lvb, int kms_valid,
2478 obd_enqueue_update_f upcall, void *cookie,
2479 struct ldlm_enqueue_info *einfo,
2480 struct lustre_handle *lockh,
2481 struct ptlrpc_request_set *rqset, int async, int agl)
2483 struct obd_device *obd = exp->exp_obd;
2484 struct ptlrpc_request *req = NULL;
2485 int intent = *flags & LDLM_FL_HAS_INTENT;
2486 int match_lvb = (agl != 0 ? 0 : LDLM_FL_LVB_READY);
2491 /* Filesystem lock extents are extended to page boundaries so that
2492 * dealing with the page cache is a little smoother. */
2493 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2494 policy->l_extent.end |= ~CFS_PAGE_MASK;
2497 * kms is not valid when either object is completely fresh (so that no
2498 * locks are cached), or object was evicted. In the latter case cached
2499 * lock cannot be used, because it would prime inode state with
2500 * potentially stale LVB.
2505 /* Next, search for already existing extent locks that will cover us */
2506 /* If we're trying to read, we also search for an existing PW lock. The
2507 * VFS and page cache already protect us locally, so lots of readers/
2508 * writers can share a single PW lock.
2510 * There are problems with conversion deadlocks, so instead of
2511 * converting a read lock to a write lock, we'll just enqueue a new
2514 * At some point we should cancel the read lock instead of making them
2515 * send us a blocking callback, but there are problems with canceling
2516 * locks out from other users right now, too. */
2517 mode = einfo->ei_mode;
2518 if (einfo->ei_mode == LCK_PR)
2520 mode = ldlm_lock_match(obd->obd_namespace, *flags | match_lvb, res_id,
2521 einfo->ei_type, policy, mode, lockh, 0);
2523 struct ldlm_lock *matched = ldlm_handle2lock(lockh);
2525 if ((agl != 0) && !(matched->l_flags & LDLM_FL_LVB_READY)) {
2526 /* For AGL, if enqueue RPC is sent but the lock is not
2527 * granted, then skip to process this strpe.
2528 * Return -ECANCELED to tell the caller. */
2529 ldlm_lock_decref(lockh, mode);
2530 LDLM_LOCK_PUT(matched);
2532 } else if (osc_set_lock_data_with_check(matched, einfo)) {
2533 *flags |= LDLM_FL_LVB_READY;
2534 /* addref the lock only if not async requests and PW
2535 * lock is matched whereas we asked for PR. */
2536 if (!rqset && einfo->ei_mode != mode)
2537 ldlm_lock_addref(lockh, LCK_PR);
2539 /* I would like to be able to ASSERT here that
2540 * rss <= kms, but I can't, for reasons which
2541 * are explained in lov_enqueue() */
2544 /* We already have a lock, and it's referenced.
2546 * At this point, the cl_lock::cll_state is CLS_QUEUING,
2547 * AGL upcall may change it to CLS_HELD directly. */
2548 (*upcall)(cookie, ELDLM_OK);
2550 if (einfo->ei_mode != mode)
2551 ldlm_lock_decref(lockh, LCK_PW);
2553 /* For async requests, decref the lock. */
2554 ldlm_lock_decref(lockh, einfo->ei_mode);
2555 LDLM_LOCK_PUT(matched);
2558 ldlm_lock_decref(lockh, mode);
2559 LDLM_LOCK_PUT(matched);
2565 CFS_LIST_HEAD(cancels);
2566 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2567 &RQF_LDLM_ENQUEUE_LVB);
2571 rc = ldlm_prep_enqueue_req(exp, req, &cancels, 0);
2573 ptlrpc_request_free(req);
2577 req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
2579 ptlrpc_request_set_replen(req);
2582 /* users of osc_enqueue() can pass this flag for ldlm_lock_match() */
2583 *flags &= ~LDLM_FL_BLOCK_GRANTED;
2585 rc = ldlm_cli_enqueue(exp, &req, einfo, res_id, policy, flags, lvb,
2586 sizeof(*lvb), LVB_T_OST, lockh, async);
2589 struct osc_enqueue_args *aa;
2590 CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
2591 aa = ptlrpc_req_async_args(req);
2594 aa->oa_flags = flags;
2595 aa->oa_upcall = upcall;
2596 aa->oa_cookie = cookie;
2598 aa->oa_lockh = lockh;
2601 req->rq_interpret_reply =
2602 (ptlrpc_interpterer_t)osc_enqueue_interpret;
2603 if (rqset == PTLRPCD_SET)
2604 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
2606 ptlrpc_set_add_req(rqset, req);
2607 } else if (intent) {
2608 ptlrpc_req_finished(req);
2613 rc = osc_enqueue_fini(req, lvb, upcall, cookie, flags, agl, rc);
2615 ptlrpc_req_finished(req);
2620 static int osc_enqueue(struct obd_export *exp, struct obd_info *oinfo,
2621 struct ldlm_enqueue_info *einfo,
2622 struct ptlrpc_request_set *rqset)
2624 struct ldlm_res_id res_id;
2628 ostid_build_res_name(&oinfo->oi_md->lsm_oi, &res_id);
2629 rc = osc_enqueue_base(exp, &res_id, &oinfo->oi_flags, &oinfo->oi_policy,
2630 &oinfo->oi_md->lsm_oinfo[0]->loi_lvb,
2631 oinfo->oi_md->lsm_oinfo[0]->loi_kms_valid,
2632 oinfo->oi_cb_up, oinfo, einfo, oinfo->oi_lockh,
2633 rqset, rqset != NULL, 0);
2637 int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2638 __u32 type, ldlm_policy_data_t *policy, __u32 mode,
2639 int *flags, void *data, struct lustre_handle *lockh,
2642 struct obd_device *obd = exp->exp_obd;
2643 int lflags = *flags;
2647 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_MATCH))
2650 /* Filesystem lock extents are extended to page boundaries so that
2651 * dealing with the page cache is a little smoother */
2652 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2653 policy->l_extent.end |= ~CFS_PAGE_MASK;
2655 /* Next, search for already existing extent locks that will cover us */
2656 /* If we're trying to read, we also search for an existing PW lock. The
2657 * VFS and page cache already protect us locally, so lots of readers/
2658 * writers can share a single PW lock. */
2662 rc = ldlm_lock_match(obd->obd_namespace, lflags,
2663 res_id, type, policy, rc, lockh, unref);
2666 if (!osc_set_data_with_check(lockh, data)) {
2667 if (!(lflags & LDLM_FL_TEST_LOCK))
2668 ldlm_lock_decref(lockh, rc);
2672 if (!(lflags & LDLM_FL_TEST_LOCK) && mode != rc) {
2673 ldlm_lock_addref(lockh, LCK_PR);
2674 ldlm_lock_decref(lockh, LCK_PW);
2681 int osc_cancel_base(struct lustre_handle *lockh, __u32 mode)
2685 if (unlikely(mode == LCK_GROUP))
2686 ldlm_lock_decref_and_cancel(lockh, mode);
2688 ldlm_lock_decref(lockh, mode);
2693 static int osc_cancel(struct obd_export *exp, struct lov_stripe_md *md,
2694 __u32 mode, struct lustre_handle *lockh)
2697 RETURN(osc_cancel_base(lockh, mode));
2700 static int osc_cancel_unused(struct obd_export *exp,
2701 struct lov_stripe_md *lsm,
2702 ldlm_cancel_flags_t flags,
2705 struct obd_device *obd = class_exp2obd(exp);
2706 struct ldlm_res_id res_id, *resp = NULL;
2709 ostid_build_res_name(&lsm->lsm_oi, &res_id);
2713 return ldlm_cli_cancel_unused(obd->obd_namespace, resp, flags, opaque);
2716 static int osc_statfs_interpret(const struct lu_env *env,
2717 struct ptlrpc_request *req,
2718 struct osc_async_args *aa, int rc)
2720 struct obd_statfs *msfs;
2724 /* The request has in fact never been sent
2725 * due to issues at a higher level (LOV).
2726 * Exit immediately since the caller is
2727 * aware of the problem and takes care
2728 * of the clean up */
2731 if ((rc == -ENOTCONN || rc == -EAGAIN) &&
2732 (aa->aa_oi->oi_flags & OBD_STATFS_NODELAY))
2738 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2740 GOTO(out, rc = -EPROTO);
2743 *aa->aa_oi->oi_osfs = *msfs;
2745 rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
2749 static int osc_statfs_async(struct obd_export *exp,
2750 struct obd_info *oinfo, __u64 max_age,
2751 struct ptlrpc_request_set *rqset)
2753 struct obd_device *obd = class_exp2obd(exp);
2754 struct ptlrpc_request *req;
2755 struct osc_async_args *aa;
2759 /* We could possibly pass max_age in the request (as an absolute
2760 * timestamp or a "seconds.usec ago") so the target can avoid doing
2761 * extra calls into the filesystem if that isn't necessary (e.g.
2762 * during mount that would help a bit). Having relative timestamps
2763 * is not so great if request processing is slow, while absolute
2764 * timestamps are not ideal because they need time synchronization. */
2765 req = ptlrpc_request_alloc(obd->u.cli.cl_import, &RQF_OST_STATFS);
2769 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2771 ptlrpc_request_free(req);
2774 ptlrpc_request_set_replen(req);
2775 req->rq_request_portal = OST_CREATE_PORTAL;
2776 ptlrpc_at_set_req_timeout(req);
2778 if (oinfo->oi_flags & OBD_STATFS_NODELAY) {
2779 /* procfs requests not want stat in wait for avoid deadlock */
2780 req->rq_no_resend = 1;
2781 req->rq_no_delay = 1;
2784 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_statfs_interpret;
2785 CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
2786 aa = ptlrpc_req_async_args(req);
2789 ptlrpc_set_add_req(rqset, req);
2793 static int osc_statfs(const struct lu_env *env, struct obd_export *exp,
2794 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
2796 struct obd_device *obd = class_exp2obd(exp);
2797 struct obd_statfs *msfs;
2798 struct ptlrpc_request *req;
2799 struct obd_import *imp = NULL;
2803 /*Since the request might also come from lprocfs, so we need
2804 *sync this with client_disconnect_export Bug15684*/
2805 down_read(&obd->u.cli.cl_sem);
2806 if (obd->u.cli.cl_import)
2807 imp = class_import_get(obd->u.cli.cl_import);
2808 up_read(&obd->u.cli.cl_sem);
2812 /* We could possibly pass max_age in the request (as an absolute
2813 * timestamp or a "seconds.usec ago") so the target can avoid doing
2814 * extra calls into the filesystem if that isn't necessary (e.g.
2815 * during mount that would help a bit). Having relative timestamps
2816 * is not so great if request processing is slow, while absolute
2817 * timestamps are not ideal because they need time synchronization. */
2818 req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
2820 class_import_put(imp);
2825 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2827 ptlrpc_request_free(req);
2830 ptlrpc_request_set_replen(req);
2831 req->rq_request_portal = OST_CREATE_PORTAL;
2832 ptlrpc_at_set_req_timeout(req);
2834 if (flags & OBD_STATFS_NODELAY) {
2835 /* procfs requests not want stat in wait for avoid deadlock */
2836 req->rq_no_resend = 1;
2837 req->rq_no_delay = 1;
2840 rc = ptlrpc_queue_wait(req);
2844 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2846 GOTO(out, rc = -EPROTO);
2853 ptlrpc_req_finished(req);
2857 /* Retrieve object striping information.
2859 * @lmmu is a pointer to an in-core struct with lmm_ost_count indicating
2860 * the maximum number of OST indices which will fit in the user buffer.
2861 * lmm_magic must be LOV_MAGIC (we only use 1 slot here).
2863 static int osc_getstripe(struct lov_stripe_md *lsm, struct lov_user_md *lump)
2865 /* we use lov_user_md_v3 because it is larger than lov_user_md_v1 */
2866 struct lov_user_md_v3 lum, *lumk;
2867 struct lov_user_ost_data_v1 *lmm_objects;
2868 int rc = 0, lum_size;
2874 /* we only need the header part from user space to get lmm_magic and
2875 * lmm_stripe_count, (the header part is common to v1 and v3) */
2876 lum_size = sizeof(struct lov_user_md_v1);
2877 if (cfs_copy_from_user(&lum, lump, lum_size))
2880 if ((lum.lmm_magic != LOV_USER_MAGIC_V1) &&
2881 (lum.lmm_magic != LOV_USER_MAGIC_V3))
2884 /* lov_user_md_vX and lov_mds_md_vX must have the same size */
2885 LASSERT(sizeof(struct lov_user_md_v1) == sizeof(struct lov_mds_md_v1));
2886 LASSERT(sizeof(struct lov_user_md_v3) == sizeof(struct lov_mds_md_v3));
2887 LASSERT(sizeof(lum.lmm_objects[0]) == sizeof(lumk->lmm_objects[0]));
2889 /* we can use lov_mds_md_size() to compute lum_size
2890 * because lov_user_md_vX and lov_mds_md_vX have the same size */
2891 if (lum.lmm_stripe_count > 0) {
2892 lum_size = lov_mds_md_size(lum.lmm_stripe_count, lum.lmm_magic);
2893 OBD_ALLOC(lumk, lum_size);
2897 if (lum.lmm_magic == LOV_USER_MAGIC_V1)
2899 &(((struct lov_user_md_v1 *)lumk)->lmm_objects[0]);
2901 lmm_objects = &(lumk->lmm_objects[0]);
2902 lmm_objects->l_ost_oi = lsm->lsm_oi;
2904 lum_size = lov_mds_md_size(0, lum.lmm_magic);
2908 lumk->lmm_oi = lsm->lsm_oi;
2909 lumk->lmm_stripe_count = 1;
2911 if (cfs_copy_to_user(lump, lumk, lum_size))
2915 OBD_FREE(lumk, lum_size);
2921 static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2922 void *karg, void *uarg)
2924 struct obd_device *obd = exp->exp_obd;
2925 struct obd_ioctl_data *data = karg;
2929 if (!cfs_try_module_get(THIS_MODULE)) {
2930 CERROR("Can't get module. Is it alive?");
2934 case OBD_IOC_LOV_GET_CONFIG: {
2936 struct lov_desc *desc;
2937 struct obd_uuid uuid;
2941 if (obd_ioctl_getdata(&buf, &len, (void *)uarg))
2942 GOTO(out, err = -EINVAL);
2944 data = (struct obd_ioctl_data *)buf;
2946 if (sizeof(*desc) > data->ioc_inllen1) {
2947 obd_ioctl_freedata(buf, len);
2948 GOTO(out, err = -EINVAL);
2951 if (data->ioc_inllen2 < sizeof(uuid)) {
2952 obd_ioctl_freedata(buf, len);
2953 GOTO(out, err = -EINVAL);
2956 desc = (struct lov_desc *)data->ioc_inlbuf1;
2957 desc->ld_tgt_count = 1;
2958 desc->ld_active_tgt_count = 1;
2959 desc->ld_default_stripe_count = 1;
2960 desc->ld_default_stripe_size = 0;
2961 desc->ld_default_stripe_offset = 0;
2962 desc->ld_pattern = 0;
2963 memcpy(&desc->ld_uuid, &obd->obd_uuid, sizeof(uuid));
2965 memcpy(data->ioc_inlbuf2, &obd->obd_uuid, sizeof(uuid));
2967 err = cfs_copy_to_user((void *)uarg, buf, len);
2970 obd_ioctl_freedata(buf, len);
2973 case LL_IOC_LOV_SETSTRIPE:
2974 err = obd_alloc_memmd(exp, karg);
2978 case LL_IOC_LOV_GETSTRIPE:
2979 err = osc_getstripe(karg, uarg);
2981 case OBD_IOC_CLIENT_RECOVER:
2982 err = ptlrpc_recover_import(obd->u.cli.cl_import,
2983 data->ioc_inlbuf1, 0);
2987 case IOC_OSC_SET_ACTIVE:
2988 err = ptlrpc_set_import_active(obd->u.cli.cl_import,
2991 case OBD_IOC_POLL_QUOTACHECK:
2992 err = osc_quota_poll_check(exp, (struct if_quotacheck *)karg);
2994 case OBD_IOC_PING_TARGET:
2995 err = ptlrpc_obd_ping(obd);
2998 CDEBUG(D_INODE, "unrecognised ioctl %#x by %s\n",
2999 cmd, cfs_curproc_comm());
3000 GOTO(out, err = -ENOTTY);
3003 cfs_module_put(THIS_MODULE);
3007 static int osc_get_info(const struct lu_env *env, struct obd_export *exp,
3008 obd_count keylen, void *key, __u32 *vallen, void *val,
3009 struct lov_stripe_md *lsm)
3012 if (!vallen || !val)
3015 if (KEY_IS(KEY_LOCK_TO_STRIPE)) {
3016 __u32 *stripe = val;
3017 *vallen = sizeof(*stripe);
3020 } else if (KEY_IS(KEY_LAST_ID)) {
3021 struct ptlrpc_request *req;
3026 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
3027 &RQF_OST_GET_INFO_LAST_ID);
3031 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
3032 RCL_CLIENT, keylen);
3033 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
3035 ptlrpc_request_free(req);
3039 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
3040 memcpy(tmp, key, keylen);
3042 req->rq_no_delay = req->rq_no_resend = 1;
3043 ptlrpc_request_set_replen(req);
3044 rc = ptlrpc_queue_wait(req);
3048 reply = req_capsule_server_get(&req->rq_pill, &RMF_OBD_ID);
3050 GOTO(out, rc = -EPROTO);
3052 *((obd_id *)val) = *reply;
3054 ptlrpc_req_finished(req);
3056 } else if (KEY_IS(KEY_FIEMAP)) {
3057 struct ptlrpc_request *req;
3058 struct ll_user_fiemap *reply;
3062 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
3063 &RQF_OST_GET_INFO_FIEMAP);
3067 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_KEY,
3068 RCL_CLIENT, keylen);
3069 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
3070 RCL_CLIENT, *vallen);
3071 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
3072 RCL_SERVER, *vallen);
3074 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
3076 ptlrpc_request_free(req);
3080 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_KEY);
3081 memcpy(tmp, key, keylen);
3082 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_VAL);
3083 memcpy(tmp, val, *vallen);
3085 ptlrpc_request_set_replen(req);
3086 rc = ptlrpc_queue_wait(req);
3090 reply = req_capsule_server_get(&req->rq_pill, &RMF_FIEMAP_VAL);
3092 GOTO(out1, rc = -EPROTO);
3094 memcpy(val, reply, *vallen);
3096 ptlrpc_req_finished(req);
3104 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
3105 obd_count keylen, void *key, obd_count vallen,
3106 void *val, struct ptlrpc_request_set *set)
3108 struct ptlrpc_request *req;
3109 struct obd_device *obd = exp->exp_obd;
3110 struct obd_import *imp = class_exp2cliimp(exp);
3115 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_SHUTDOWN, 10);
3117 if (KEY_IS(KEY_CHECKSUM)) {
3118 if (vallen != sizeof(int))
3120 exp->exp_obd->u.cli.cl_checksum = (*(int *)val) ? 1 : 0;
3124 if (KEY_IS(KEY_SPTLRPC_CONF)) {
3125 sptlrpc_conf_client_adapt(obd);
3129 if (KEY_IS(KEY_FLUSH_CTX)) {
3130 sptlrpc_import_flush_my_ctx(imp);
3134 if (KEY_IS(KEY_CACHE_SET)) {
3135 struct client_obd *cli = &obd->u.cli;
3137 LASSERT(cli->cl_cache == NULL); /* only once */
3138 cli->cl_cache = (struct cl_client_cache *)val;
3139 cfs_atomic_inc(&cli->cl_cache->ccc_users);
3140 cli->cl_lru_left = &cli->cl_cache->ccc_lru_left;
3142 /* add this osc into entity list */
3143 LASSERT(cfs_list_empty(&cli->cl_lru_osc));
3144 spin_lock(&cli->cl_cache->ccc_lru_lock);
3145 cfs_list_add(&cli->cl_lru_osc, &cli->cl_cache->ccc_lru);
3146 spin_unlock(&cli->cl_cache->ccc_lru_lock);
3151 if (KEY_IS(KEY_CACHE_LRU_SHRINK)) {
3152 struct client_obd *cli = &obd->u.cli;
3153 int nr = cfs_atomic_read(&cli->cl_lru_in_list) >> 1;
3154 int target = *(int *)val;
3156 nr = osc_lru_shrink(cli, min(nr, target));
3161 if (!set && !KEY_IS(KEY_GRANT_SHRINK))
3164 /* We pass all other commands directly to OST. Since nobody calls osc
3165 methods directly and everybody is supposed to go through LOV, we
3166 assume lov checked invalid values for us.
3167 The only recognised values so far are evict_by_nid and mds_conn.
3168 Even if something bad goes through, we'd get a -EINVAL from OST
3171 req = ptlrpc_request_alloc(imp, KEY_IS(KEY_GRANT_SHRINK) ?
3172 &RQF_OST_SET_GRANT_INFO :
3177 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
3178 RCL_CLIENT, keylen);
3179 if (!KEY_IS(KEY_GRANT_SHRINK))
3180 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
3181 RCL_CLIENT, vallen);
3182 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SET_INFO);
3184 ptlrpc_request_free(req);
3188 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
3189 memcpy(tmp, key, keylen);
3190 tmp = req_capsule_client_get(&req->rq_pill, KEY_IS(KEY_GRANT_SHRINK) ?
3193 memcpy(tmp, val, vallen);
3195 if (KEY_IS(KEY_GRANT_SHRINK)) {
3196 struct osc_grant_args *aa;
3199 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
3200 aa = ptlrpc_req_async_args(req);
3203 ptlrpc_req_finished(req);
3206 *oa = ((struct ost_body *)val)->oa;
3208 req->rq_interpret_reply = osc_shrink_grant_interpret;
3211 ptlrpc_request_set_replen(req);
3212 if (!KEY_IS(KEY_GRANT_SHRINK)) {
3213 LASSERT(set != NULL);
3214 ptlrpc_set_add_req(set, req);
3215 ptlrpc_check_set(NULL, set);
3217 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
3223 static int osc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
3224 struct obd_device *disk_obd, int *index)
3226 /* this code is not supposed to be used with LOD/OSP
3227 * to be removed soon */
3232 static int osc_llog_finish(struct obd_device *obd, int count)
3234 struct llog_ctxt *ctxt;
3238 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
3240 llog_cat_close(NULL, ctxt->loc_handle);
3241 llog_cleanup(NULL, ctxt);
3244 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
3246 llog_cleanup(NULL, ctxt);
3250 static int osc_reconnect(const struct lu_env *env,
3251 struct obd_export *exp, struct obd_device *obd,
3252 struct obd_uuid *cluuid,
3253 struct obd_connect_data *data,
3256 struct client_obd *cli = &obd->u.cli;
3258 if (data != NULL && (data->ocd_connect_flags & OBD_CONNECT_GRANT)) {
3261 client_obd_list_lock(&cli->cl_loi_list_lock);
3262 data->ocd_grant = (cli->cl_avail_grant + cli->cl_dirty) ?:
3263 2 * cli_brw_size(obd);
3264 lost_grant = cli->cl_lost_grant;
3265 cli->cl_lost_grant = 0;
3266 client_obd_list_unlock(&cli->cl_loi_list_lock);
3268 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d"
3269 " ocd_grant: %d, lost: %ld.\n", data->ocd_connect_flags,
3270 data->ocd_version, data->ocd_grant, lost_grant);
3276 static int osc_disconnect(struct obd_export *exp)
3278 struct obd_device *obd = class_exp2obd(exp);
3279 struct llog_ctxt *ctxt;
3282 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
3284 if (obd->u.cli.cl_conn_count == 1) {
3285 /* Flush any remaining cancel messages out to the
3287 llog_sync(ctxt, exp, 0);
3289 llog_ctxt_put(ctxt);
3291 CDEBUG(D_HA, "No LLOG_SIZE_REPL_CTXT found in obd %p\n",
3295 rc = client_disconnect_export(exp);
3297 * Initially we put del_shrink_grant before disconnect_export, but it
3298 * causes the following problem if setup (connect) and cleanup
3299 * (disconnect) are tangled together.
3300 * connect p1 disconnect p2
3301 * ptlrpc_connect_import
3302 * ............... class_manual_cleanup
3305 * ptlrpc_connect_interrupt
3307 * add this client to shrink list
3309 * Bang! pinger trigger the shrink.
3310 * So the osc should be disconnected from the shrink list, after we
3311 * are sure the import has been destroyed. BUG18662
3313 if (obd->u.cli.cl_import == NULL)
3314 osc_del_shrink_grant(&obd->u.cli);
3318 static int osc_import_event(struct obd_device *obd,
3319 struct obd_import *imp,
3320 enum obd_import_event event)
3322 struct client_obd *cli;
3326 LASSERT(imp->imp_obd == obd);
3329 case IMP_EVENT_DISCON: {
3331 client_obd_list_lock(&cli->cl_loi_list_lock);
3332 cli->cl_avail_grant = 0;
3333 cli->cl_lost_grant = 0;
3334 client_obd_list_unlock(&cli->cl_loi_list_lock);
3337 case IMP_EVENT_INACTIVE: {
3338 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
3341 case IMP_EVENT_INVALIDATE: {
3342 struct ldlm_namespace *ns = obd->obd_namespace;
3346 env = cl_env_get(&refcheck);
3350 /* all pages go to failing rpcs due to the invalid
3352 osc_io_unplug(env, cli, NULL, PDL_POLICY_ROUND);
3354 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
3355 cl_env_put(env, &refcheck);
3360 case IMP_EVENT_ACTIVE: {
3361 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
3364 case IMP_EVENT_OCD: {
3365 struct obd_connect_data *ocd = &imp->imp_connect_data;
3367 if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT)
3368 osc_init_grant(&obd->u.cli, ocd);
3371 if (ocd->ocd_connect_flags & OBD_CONNECT_REQPORTAL)
3372 imp->imp_client->cli_request_portal =OST_REQUEST_PORTAL;
3374 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
3377 case IMP_EVENT_DEACTIVATE: {
3378 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DEACTIVATE, NULL);
3381 case IMP_EVENT_ACTIVATE: {
3382 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVATE, NULL);
3386 CERROR("Unknown import event %d\n", event);
3393 * Determine whether the lock can be canceled before replaying the lock
3394 * during recovery, see bug16774 for detailed information.
3396 * \retval zero the lock can't be canceled
3397 * \retval other ok to cancel
3399 static int osc_cancel_for_recovery(struct ldlm_lock *lock)
3401 check_res_locked(lock->l_resource);
3404 * Cancel all unused extent lock in granted mode LCK_PR or LCK_CR.
3406 * XXX as a future improvement, we can also cancel unused write lock
3407 * if it doesn't have dirty data and active mmaps.
3409 if (lock->l_resource->lr_type == LDLM_EXTENT &&
3410 (lock->l_granted_mode == LCK_PR ||
3411 lock->l_granted_mode == LCK_CR) &&
3412 (osc_dlm_lock_pageref(lock) == 0))
3418 static int brw_queue_work(const struct lu_env *env, void *data)
3420 struct client_obd *cli = data;
3422 CDEBUG(D_CACHE, "Run writeback work for client obd %p.\n", cli);
3424 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
3428 int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
3430 struct lprocfs_static_vars lvars = { 0 };
3431 struct client_obd *cli = &obd->u.cli;
3436 rc = ptlrpcd_addref();
3440 rc = client_obd_setup(obd, lcfg);
3442 GOTO(out_ptlrpcd, rc);
3444 handler = ptlrpcd_alloc_work(cli->cl_import, brw_queue_work, cli);
3445 if (IS_ERR(handler))
3446 GOTO(out_client_setup, rc = PTR_ERR(handler));
3447 cli->cl_writeback_work = handler;
3449 rc = osc_quota_setup(obd);
3451 GOTO(out_ptlrpcd_work, rc);
3453 cli->cl_grant_shrink_interval = GRANT_SHRINK_INTERVAL;
3454 lprocfs_osc_init_vars(&lvars);
3455 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0) {
3456 lproc_osc_attach_seqstat(obd);
3457 sptlrpc_lprocfs_cliobd_attach(obd);
3458 ptlrpc_lprocfs_register_obd(obd);
3461 /* We need to allocate a few requests more, because
3462 * brw_interpret tries to create new requests before freeing
3463 * previous ones, Ideally we want to have 2x max_rpcs_in_flight
3464 * reserved, but I'm afraid that might be too much wasted RAM
3465 * in fact, so 2 is just my guess and still should work. */
3466 cli->cl_import->imp_rq_pool =
3467 ptlrpc_init_rq_pool(cli->cl_max_rpcs_in_flight + 2,
3469 ptlrpc_add_rqs_to_pool);
3471 CFS_INIT_LIST_HEAD(&cli->cl_grant_shrink_list);
3472 ns_register_cancel(obd->obd_namespace, osc_cancel_for_recovery);
3476 ptlrpcd_destroy_work(handler);
3478 client_obd_cleanup(obd);
3484 static int osc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
3490 case OBD_CLEANUP_EARLY: {
3491 struct obd_import *imp;
3492 imp = obd->u.cli.cl_import;
3493 CDEBUG(D_HA, "Deactivating import %s\n", obd->obd_name);
3494 /* ptlrpc_abort_inflight to stop an mds_lov_synchronize */
3495 ptlrpc_deactivate_import(imp);
3496 spin_lock(&imp->imp_lock);
3497 imp->imp_pingable = 0;
3498 spin_unlock(&imp->imp_lock);
3501 case OBD_CLEANUP_EXPORTS: {
3502 struct client_obd *cli = &obd->u.cli;
3504 * for echo client, export may be on zombie list, wait for
3505 * zombie thread to cull it, because cli.cl_import will be
3506 * cleared in client_disconnect_export():
3507 * class_export_destroy() -> obd_cleanup() ->
3508 * echo_device_free() -> echo_client_cleanup() ->
3509 * obd_disconnect() -> osc_disconnect() ->
3510 * client_disconnect_export()
3512 obd_zombie_barrier();
3513 if (cli->cl_writeback_work) {
3514 ptlrpcd_destroy_work(cli->cl_writeback_work);
3515 cli->cl_writeback_work = NULL;
3517 obd_cleanup_client_import(obd);
3518 ptlrpc_lprocfs_unregister_obd(obd);
3519 lprocfs_obd_cleanup(obd);
3520 rc = obd_llog_finish(obd, 0);
3522 CERROR("failed to cleanup llogging subsystems\n");
3529 int osc_cleanup(struct obd_device *obd)
3531 struct client_obd *cli = &obd->u.cli;
3537 if (cli->cl_cache != NULL) {
3538 LASSERT(cfs_atomic_read(&cli->cl_cache->ccc_users) > 0);
3539 spin_lock(&cli->cl_cache->ccc_lru_lock);
3540 cfs_list_del_init(&cli->cl_lru_osc);
3541 spin_unlock(&cli->cl_cache->ccc_lru_lock);
3542 cli->cl_lru_left = NULL;
3543 cfs_atomic_dec(&cli->cl_cache->ccc_users);
3544 cli->cl_cache = NULL;
3547 /* free memory of osc quota cache */
3548 osc_quota_cleanup(obd);
3550 rc = client_obd_cleanup(obd);
3556 int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg)
3558 struct lprocfs_static_vars lvars = { 0 };
3561 lprocfs_osc_init_vars(&lvars);
3563 switch (lcfg->lcfg_command) {
3565 rc = class_process_proc_param(PARAM_OSC, lvars.obd_vars,
3575 static int osc_process_config(struct obd_device *obd, obd_count len, void *buf)
3577 return osc_process_config_base(obd, buf);
3580 struct obd_ops osc_obd_ops = {
3581 .o_owner = THIS_MODULE,
3582 .o_setup = osc_setup,
3583 .o_precleanup = osc_precleanup,
3584 .o_cleanup = osc_cleanup,
3585 .o_add_conn = client_import_add_conn,
3586 .o_del_conn = client_import_del_conn,
3587 .o_connect = client_connect_import,
3588 .o_reconnect = osc_reconnect,
3589 .o_disconnect = osc_disconnect,
3590 .o_statfs = osc_statfs,
3591 .o_statfs_async = osc_statfs_async,
3592 .o_packmd = osc_packmd,
3593 .o_unpackmd = osc_unpackmd,
3594 .o_create = osc_create,
3595 .o_destroy = osc_destroy,
3596 .o_getattr = osc_getattr,
3597 .o_getattr_async = osc_getattr_async,
3598 .o_setattr = osc_setattr,
3599 .o_setattr_async = osc_setattr_async,
3601 .o_punch = osc_punch,
3603 .o_enqueue = osc_enqueue,
3604 .o_change_cbdata = osc_change_cbdata,
3605 .o_find_cbdata = osc_find_cbdata,
3606 .o_cancel = osc_cancel,
3607 .o_cancel_unused = osc_cancel_unused,
3608 .o_iocontrol = osc_iocontrol,
3609 .o_get_info = osc_get_info,
3610 .o_set_info_async = osc_set_info_async,
3611 .o_import_event = osc_import_event,
3612 .o_llog_init = osc_llog_init,
3613 .o_llog_finish = osc_llog_finish,
3614 .o_process_config = osc_process_config,
3615 .o_quotactl = osc_quotactl,
3616 .o_quotacheck = osc_quotacheck,
3619 extern struct lu_kmem_descr osc_caches[];
3620 extern spinlock_t osc_ast_guard;
3621 extern struct lock_class_key osc_ast_guard_class;
3623 int __init osc_init(void)
3625 struct lprocfs_static_vars lvars = { 0 };
3629 /* print an address of _any_ initialized kernel symbol from this
3630 * module, to allow debugging with gdb that doesn't support data
3631 * symbols from modules.*/
3632 CDEBUG(D_INFO, "Lustre OSC module (%p).\n", &osc_caches);
3634 rc = lu_kmem_init(osc_caches);
3636 lprocfs_osc_init_vars(&lvars);
3638 rc = class_register_type(&osc_obd_ops, NULL, lvars.module_vars,
3639 LUSTRE_OSC_NAME, &osc_device_type);
3641 lu_kmem_fini(osc_caches);
3645 spin_lock_init(&osc_ast_guard);
3646 lockdep_set_class(&osc_ast_guard, &osc_ast_guard_class);
3652 static void /*__exit*/ osc_exit(void)
3654 class_unregister_type(LUSTRE_OSC_NAME);
3655 lu_kmem_fini(osc_caches);
3658 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3659 MODULE_DESCRIPTION("Lustre Object Storage Client (OSC)");
3660 MODULE_LICENSE("GPL");
3662 cfs_module(osc, LUSTRE_VERSION_STRING, osc_init, osc_exit);
git://git.whamcloud.com / fs / lustre-release.git / blob