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, Whamcloud, Inc.
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 "osc_internal.h"
62 #include "osc_cl_internal.h"
64 static void osc_release_ppga(struct brw_page **ppga, obd_count count);
65 static int brw_interpret(const struct lu_env *env,
66 struct ptlrpc_request *req, void *data, int rc);
67 int osc_cleanup(struct obd_device *obd);
69 /* Pack OSC object metadata for disk storage (LE byte order). */
70 static int osc_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
71 struct lov_stripe_md *lsm)
76 lmm_size = sizeof(**lmmp);
81 OBD_FREE(*lmmp, lmm_size);
87 OBD_ALLOC(*lmmp, lmm_size);
93 LASSERT(lsm->lsm_object_id);
94 LASSERT_SEQ_IS_MDT(lsm->lsm_object_seq);
95 (*lmmp)->lmm_object_id = cpu_to_le64(lsm->lsm_object_id);
96 (*lmmp)->lmm_object_seq = cpu_to_le64(lsm->lsm_object_seq);
102 /* Unpack OSC object metadata from disk storage (LE byte order). */
103 static int osc_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
104 struct lov_mds_md *lmm, int lmm_bytes)
107 struct obd_import *imp = class_exp2cliimp(exp);
111 if (lmm_bytes < sizeof (*lmm)) {
112 CERROR("lov_mds_md too small: %d, need %d\n",
113 lmm_bytes, (int)sizeof(*lmm));
116 /* XXX LOV_MAGIC etc check? */
118 if (lmm->lmm_object_id == 0) {
119 CERROR("lov_mds_md: zero lmm_object_id\n");
124 lsm_size = lov_stripe_md_size(1);
128 if (*lsmp != NULL && lmm == NULL) {
129 OBD_FREE((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
130 OBD_FREE(*lsmp, lsm_size);
136 OBD_ALLOC(*lsmp, lsm_size);
139 OBD_ALLOC((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
140 if ((*lsmp)->lsm_oinfo[0] == NULL) {
141 OBD_FREE(*lsmp, lsm_size);
144 loi_init((*lsmp)->lsm_oinfo[0]);
148 /* XXX zero *lsmp? */
149 (*lsmp)->lsm_object_id = le64_to_cpu (lmm->lmm_object_id);
150 (*lsmp)->lsm_object_seq = le64_to_cpu (lmm->lmm_object_seq);
151 LASSERT((*lsmp)->lsm_object_id);
152 LASSERT_SEQ_IS_MDT((*lsmp)->lsm_object_seq);
156 (imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_MAXBYTES))
157 (*lsmp)->lsm_maxbytes = imp->imp_connect_data.ocd_maxbytes;
159 (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES;
164 static inline void osc_pack_capa(struct ptlrpc_request *req,
165 struct ost_body *body, void *capa)
167 struct obd_capa *oc = (struct obd_capa *)capa;
168 struct lustre_capa *c;
173 c = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1);
176 body->oa.o_valid |= OBD_MD_FLOSSCAPA;
177 DEBUG_CAPA(D_SEC, c, "pack");
180 static inline void osc_pack_req_body(struct ptlrpc_request *req,
181 struct obd_info *oinfo)
183 struct ost_body *body;
185 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
188 lustre_set_wire_obdo(&body->oa, oinfo->oi_oa);
189 osc_pack_capa(req, body, oinfo->oi_capa);
192 static inline void osc_set_capa_size(struct ptlrpc_request *req,
193 const struct req_msg_field *field,
197 req_capsule_set_size(&req->rq_pill, field, RCL_CLIENT, 0);
199 /* it is already calculated as sizeof struct obd_capa */
203 static int osc_getattr_interpret(const struct lu_env *env,
204 struct ptlrpc_request *req,
205 struct osc_async_args *aa, int rc)
207 struct ost_body *body;
213 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
215 CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
216 lustre_get_wire_obdo(aa->aa_oi->oi_oa, &body->oa);
218 /* This should really be sent by the OST */
219 aa->aa_oi->oi_oa->o_blksize = PTLRPC_MAX_BRW_SIZE;
220 aa->aa_oi->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
222 CDEBUG(D_INFO, "can't unpack ost_body\n");
224 aa->aa_oi->oi_oa->o_valid = 0;
227 rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
231 static int osc_getattr_async(struct obd_export *exp, struct obd_info *oinfo,
232 struct ptlrpc_request_set *set)
234 struct ptlrpc_request *req;
235 struct osc_async_args *aa;
239 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
243 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
244 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
246 ptlrpc_request_free(req);
250 osc_pack_req_body(req, oinfo);
252 ptlrpc_request_set_replen(req);
253 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_getattr_interpret;
255 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
256 aa = ptlrpc_req_async_args(req);
259 ptlrpc_set_add_req(set, req);
263 static int osc_getattr(const struct lu_env *env, struct obd_export *exp,
264 struct obd_info *oinfo)
266 struct ptlrpc_request *req;
267 struct ost_body *body;
271 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
275 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
276 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
278 ptlrpc_request_free(req);
282 osc_pack_req_body(req, oinfo);
284 ptlrpc_request_set_replen(req);
286 rc = ptlrpc_queue_wait(req);
290 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
292 GOTO(out, rc = -EPROTO);
294 CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
295 lustre_get_wire_obdo(oinfo->oi_oa, &body->oa);
297 /* This should really be sent by the OST */
298 oinfo->oi_oa->o_blksize = PTLRPC_MAX_BRW_SIZE;
299 oinfo->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
303 ptlrpc_req_finished(req);
307 static int osc_setattr(const struct lu_env *env, struct obd_export *exp,
308 struct obd_info *oinfo, struct obd_trans_info *oti)
310 struct ptlrpc_request *req;
311 struct ost_body *body;
315 LASSERT(oinfo->oi_oa->o_valid & OBD_MD_FLGROUP);
317 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR);
321 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
322 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR);
324 ptlrpc_request_free(req);
328 osc_pack_req_body(req, oinfo);
330 ptlrpc_request_set_replen(req);
332 rc = ptlrpc_queue_wait(req);
336 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
338 GOTO(out, rc = -EPROTO);
340 lustre_get_wire_obdo(oinfo->oi_oa, &body->oa);
344 ptlrpc_req_finished(req);
348 static int osc_setattr_interpret(const struct lu_env *env,
349 struct ptlrpc_request *req,
350 struct osc_setattr_args *sa, int rc)
352 struct ost_body *body;
358 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
360 GOTO(out, rc = -EPROTO);
362 lustre_get_wire_obdo(sa->sa_oa, &body->oa);
364 rc = sa->sa_upcall(sa->sa_cookie, rc);
368 int osc_setattr_async_base(struct obd_export *exp, struct obd_info *oinfo,
369 struct obd_trans_info *oti,
370 obd_enqueue_update_f upcall, void *cookie,
371 struct ptlrpc_request_set *rqset)
373 struct ptlrpc_request *req;
374 struct osc_setattr_args *sa;
378 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR);
382 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
383 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR);
385 ptlrpc_request_free(req);
389 if (oti && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
390 oinfo->oi_oa->o_lcookie = *oti->oti_logcookies;
392 osc_pack_req_body(req, oinfo);
394 ptlrpc_request_set_replen(req);
396 /* do mds to ost setattr asynchronously */
398 /* Do not wait for response. */
399 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
401 req->rq_interpret_reply =
402 (ptlrpc_interpterer_t)osc_setattr_interpret;
404 CLASSERT (sizeof(*sa) <= sizeof(req->rq_async_args));
405 sa = ptlrpc_req_async_args(req);
406 sa->sa_oa = oinfo->oi_oa;
407 sa->sa_upcall = upcall;
408 sa->sa_cookie = cookie;
410 if (rqset == PTLRPCD_SET)
411 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
413 ptlrpc_set_add_req(rqset, req);
419 static int osc_setattr_async(struct obd_export *exp, struct obd_info *oinfo,
420 struct obd_trans_info *oti,
421 struct ptlrpc_request_set *rqset)
423 return osc_setattr_async_base(exp, oinfo, oti,
424 oinfo->oi_cb_up, oinfo, rqset);
427 int osc_real_create(struct obd_export *exp, struct obdo *oa,
428 struct lov_stripe_md **ea, struct obd_trans_info *oti)
430 struct ptlrpc_request *req;
431 struct ost_body *body;
432 struct lov_stripe_md *lsm;
441 rc = obd_alloc_memmd(exp, &lsm);
446 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_CREATE);
448 GOTO(out, rc = -ENOMEM);
450 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_CREATE);
452 ptlrpc_request_free(req);
456 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
458 lustre_set_wire_obdo(&body->oa, oa);
460 ptlrpc_request_set_replen(req);
462 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
463 oa->o_flags == OBD_FL_DELORPHAN) {
465 "delorphan from OST integration");
466 /* Don't resend the delorphan req */
467 req->rq_no_resend = req->rq_no_delay = 1;
470 rc = ptlrpc_queue_wait(req);
474 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
476 GOTO(out_req, rc = -EPROTO);
478 lustre_get_wire_obdo(oa, &body->oa);
480 /* This should really be sent by the OST */
481 oa->o_blksize = PTLRPC_MAX_BRW_SIZE;
482 oa->o_valid |= OBD_MD_FLBLKSZ;
484 /* XXX LOV STACKING: the lsm that is passed to us from LOV does not
485 * have valid lsm_oinfo data structs, so don't go touching that.
486 * This needs to be fixed in a big way.
488 lsm->lsm_object_id = oa->o_id;
489 lsm->lsm_object_seq = oa->o_seq;
493 oti->oti_transno = lustre_msg_get_transno(req->rq_repmsg);
495 if (oa->o_valid & OBD_MD_FLCOOKIE) {
496 if (!oti->oti_logcookies)
497 oti_alloc_cookies(oti, 1);
498 *oti->oti_logcookies = oa->o_lcookie;
502 CDEBUG(D_HA, "transno: "LPD64"\n",
503 lustre_msg_get_transno(req->rq_repmsg));
505 ptlrpc_req_finished(req);
508 obd_free_memmd(exp, &lsm);
512 int osc_punch_base(struct obd_export *exp, struct obd_info *oinfo,
513 obd_enqueue_update_f upcall, void *cookie,
514 struct ptlrpc_request_set *rqset)
516 struct ptlrpc_request *req;
517 struct osc_setattr_args *sa;
518 struct ost_body *body;
522 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_PUNCH);
526 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
527 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_PUNCH);
529 ptlrpc_request_free(req);
532 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
533 ptlrpc_at_set_req_timeout(req);
535 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
537 lustre_set_wire_obdo(&body->oa, oinfo->oi_oa);
538 osc_pack_capa(req, body, oinfo->oi_capa);
540 ptlrpc_request_set_replen(req);
542 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_setattr_interpret;
543 CLASSERT (sizeof(*sa) <= sizeof(req->rq_async_args));
544 sa = ptlrpc_req_async_args(req);
545 sa->sa_oa = oinfo->oi_oa;
546 sa->sa_upcall = upcall;
547 sa->sa_cookie = cookie;
548 if (rqset == PTLRPCD_SET)
549 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
551 ptlrpc_set_add_req(rqset, req);
556 static int osc_punch(const struct lu_env *env, struct obd_export *exp,
557 struct obd_info *oinfo, struct obd_trans_info *oti,
558 struct ptlrpc_request_set *rqset)
560 oinfo->oi_oa->o_size = oinfo->oi_policy.l_extent.start;
561 oinfo->oi_oa->o_blocks = oinfo->oi_policy.l_extent.end;
562 oinfo->oi_oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
563 return osc_punch_base(exp, oinfo,
564 oinfo->oi_cb_up, oinfo, rqset);
567 static int osc_sync_interpret(const struct lu_env *env,
568 struct ptlrpc_request *req,
571 struct osc_fsync_args *fa = arg;
572 struct ost_body *body;
578 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
580 CERROR ("can't unpack ost_body\n");
581 GOTO(out, rc = -EPROTO);
584 *fa->fa_oi->oi_oa = body->oa;
586 rc = fa->fa_upcall(fa->fa_cookie, rc);
590 int osc_sync_base(struct obd_export *exp, struct obd_info *oinfo,
591 obd_enqueue_update_f upcall, void *cookie,
592 struct ptlrpc_request_set *rqset)
594 struct ptlrpc_request *req;
595 struct ost_body *body;
596 struct osc_fsync_args *fa;
600 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SYNC);
604 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
605 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SYNC);
607 ptlrpc_request_free(req);
611 /* overload the size and blocks fields in the oa with start/end */
612 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
614 lustre_set_wire_obdo(&body->oa, oinfo->oi_oa);
615 osc_pack_capa(req, body, oinfo->oi_capa);
617 ptlrpc_request_set_replen(req);
618 req->rq_interpret_reply = osc_sync_interpret;
620 CLASSERT(sizeof(*fa) <= sizeof(req->rq_async_args));
621 fa = ptlrpc_req_async_args(req);
623 fa->fa_upcall = upcall;
624 fa->fa_cookie = cookie;
626 if (rqset == PTLRPCD_SET)
627 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
629 ptlrpc_set_add_req(rqset, req);
634 static int osc_sync(const struct lu_env *env, struct obd_export *exp,
635 struct obd_info *oinfo, obd_size start, obd_size end,
636 struct ptlrpc_request_set *set)
641 CDEBUG(D_INFO, "oa NULL\n");
645 oinfo->oi_oa->o_size = start;
646 oinfo->oi_oa->o_blocks = end;
647 oinfo->oi_oa->o_valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS);
649 RETURN(osc_sync_base(exp, oinfo, oinfo->oi_cb_up, oinfo, set));
652 /* Find and cancel locally locks matched by @mode in the resource found by
653 * @objid. Found locks are added into @cancel list. Returns the amount of
654 * locks added to @cancels list. */
655 static int osc_resource_get_unused(struct obd_export *exp, struct obdo *oa,
657 ldlm_mode_t mode, int lock_flags)
659 struct ldlm_namespace *ns = exp->exp_obd->obd_namespace;
660 struct ldlm_res_id res_id;
661 struct ldlm_resource *res;
665 /* Return, i.e. cancel nothing, only if ELC is supported (flag in
666 * export) but disabled through procfs (flag in NS).
668 * This distinguishes from a case when ELC is not supported originally,
669 * when we still want to cancel locks in advance and just cancel them
670 * locally, without sending any RPC. */
671 if (exp_connect_cancelset(exp) && !ns_connect_cancelset(ns))
674 osc_build_res_name(oa->o_id, oa->o_seq, &res_id);
675 res = ldlm_resource_get(ns, NULL, &res_id, 0, 0);
679 LDLM_RESOURCE_ADDREF(res);
680 count = ldlm_cancel_resource_local(res, cancels, NULL, mode,
681 lock_flags, 0, NULL);
682 LDLM_RESOURCE_DELREF(res);
683 ldlm_resource_putref(res);
687 static int osc_destroy_interpret(const struct lu_env *env,
688 struct ptlrpc_request *req, void *data,
691 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
693 cfs_atomic_dec(&cli->cl_destroy_in_flight);
694 cfs_waitq_signal(&cli->cl_destroy_waitq);
698 static int osc_can_send_destroy(struct client_obd *cli)
700 if (cfs_atomic_inc_return(&cli->cl_destroy_in_flight) <=
701 cli->cl_max_rpcs_in_flight) {
702 /* The destroy request can be sent */
705 if (cfs_atomic_dec_return(&cli->cl_destroy_in_flight) <
706 cli->cl_max_rpcs_in_flight) {
708 * The counter has been modified between the two atomic
711 cfs_waitq_signal(&cli->cl_destroy_waitq);
716 int osc_create(const struct lu_env *env, struct obd_export *exp,
717 struct obdo *oa, struct lov_stripe_md **ea,
718 struct obd_trans_info *oti)
725 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
727 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
728 oa->o_flags == OBD_FL_RECREATE_OBJS) {
729 RETURN(osc_real_create(exp, oa, ea, oti));
732 if (!fid_seq_is_mdt(oa->o_seq))
733 RETURN(osc_real_create(exp, oa, ea, oti));
735 /* we should not get here anymore */
741 /* Destroy requests can be async always on the client, and we don't even really
742 * care about the return code since the client cannot do anything at all about
744 * When the MDS is unlinking a filename, it saves the file objects into a
745 * recovery llog, and these object records are cancelled when the OST reports
746 * they were destroyed and sync'd to disk (i.e. transaction committed).
747 * If the client dies, or the OST is down when the object should be destroyed,
748 * the records are not cancelled, and when the OST reconnects to the MDS next,
749 * it will retrieve the llog unlink logs and then sends the log cancellation
750 * cookies to the MDS after committing destroy transactions. */
751 static int osc_destroy(const struct lu_env *env, struct obd_export *exp,
752 struct obdo *oa, struct lov_stripe_md *ea,
753 struct obd_trans_info *oti, struct obd_export *md_export,
756 struct client_obd *cli = &exp->exp_obd->u.cli;
757 struct ptlrpc_request *req;
758 struct ost_body *body;
759 CFS_LIST_HEAD(cancels);
764 CDEBUG(D_INFO, "oa NULL\n");
768 count = osc_resource_get_unused(exp, oa, &cancels, LCK_PW,
769 LDLM_FL_DISCARD_DATA);
771 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_DESTROY);
773 ldlm_lock_list_put(&cancels, l_bl_ast, count);
777 osc_set_capa_size(req, &RMF_CAPA1, (struct obd_capa *)capa);
778 rc = ldlm_prep_elc_req(exp, req, LUSTRE_OST_VERSION, OST_DESTROY,
781 ptlrpc_request_free(req);
785 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
786 ptlrpc_at_set_req_timeout(req);
788 if (oti != NULL && oa->o_valid & OBD_MD_FLCOOKIE)
789 oa->o_lcookie = *oti->oti_logcookies;
790 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
792 lustre_set_wire_obdo(&body->oa, oa);
794 osc_pack_capa(req, body, (struct obd_capa *)capa);
795 ptlrpc_request_set_replen(req);
797 /* If osc_destory is for destroying the unlink orphan,
798 * sent from MDT to OST, which should not be blocked here,
799 * because the process might be triggered by ptlrpcd, and
800 * it is not good to block ptlrpcd thread (b=16006)*/
801 if (!(oa->o_flags & OBD_FL_DELORPHAN)) {
802 req->rq_interpret_reply = osc_destroy_interpret;
803 if (!osc_can_send_destroy(cli)) {
804 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP,
808 * Wait until the number of on-going destroy RPCs drops
809 * under max_rpc_in_flight
811 l_wait_event_exclusive(cli->cl_destroy_waitq,
812 osc_can_send_destroy(cli), &lwi);
816 /* Do not wait for response */
817 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
821 static void osc_announce_cached(struct client_obd *cli, struct obdo *oa,
824 obd_flag bits = OBD_MD_FLBLOCKS|OBD_MD_FLGRANT;
826 LASSERT(!(oa->o_valid & bits));
829 client_obd_list_lock(&cli->cl_loi_list_lock);
830 oa->o_dirty = cli->cl_dirty;
831 if (unlikely(cli->cl_dirty - cli->cl_dirty_transit >
832 cli->cl_dirty_max)) {
833 CERROR("dirty %lu - %lu > dirty_max %lu\n",
834 cli->cl_dirty, cli->cl_dirty_transit, cli->cl_dirty_max);
836 } else if (unlikely(cfs_atomic_read(&obd_dirty_pages) -
837 cfs_atomic_read(&obd_dirty_transit_pages) >
838 (long)(obd_max_dirty_pages + 1))) {
839 /* The cfs_atomic_read() allowing the cfs_atomic_inc() are
840 * not covered by a lock thus they may safely race and trip
841 * this CERROR() unless we add in a small fudge factor (+1). */
842 CERROR("dirty %d - %d > system dirty_max %d\n",
843 cfs_atomic_read(&obd_dirty_pages),
844 cfs_atomic_read(&obd_dirty_transit_pages),
845 obd_max_dirty_pages);
847 } else if (unlikely(cli->cl_dirty_max - cli->cl_dirty > 0x7fffffff)) {
848 CERROR("dirty %lu - dirty_max %lu too big???\n",
849 cli->cl_dirty, cli->cl_dirty_max);
852 long max_in_flight = (cli->cl_max_pages_per_rpc <<
854 (cli->cl_max_rpcs_in_flight + 1);
855 oa->o_undirty = max(cli->cl_dirty_max, max_in_flight);
857 oa->o_grant = cli->cl_avail_grant + cli->cl_reserved_grant;
858 oa->o_dropped = cli->cl_lost_grant;
859 cli->cl_lost_grant = 0;
860 client_obd_list_unlock(&cli->cl_loi_list_lock);
861 CDEBUG(D_CACHE,"dirty: "LPU64" undirty: %u dropped %u grant: "LPU64"\n",
862 oa->o_dirty, oa->o_undirty, oa->o_dropped, oa->o_grant);
866 void osc_update_next_shrink(struct client_obd *cli)
868 cli->cl_next_shrink_grant =
869 cfs_time_shift(cli->cl_grant_shrink_interval);
870 CDEBUG(D_CACHE, "next time %ld to shrink grant \n",
871 cli->cl_next_shrink_grant);
874 static void __osc_update_grant(struct client_obd *cli, obd_size grant)
876 client_obd_list_lock(&cli->cl_loi_list_lock);
877 cli->cl_avail_grant += grant;
878 client_obd_list_unlock(&cli->cl_loi_list_lock);
881 static void osc_update_grant(struct client_obd *cli, struct ost_body *body)
883 if (body->oa.o_valid & OBD_MD_FLGRANT) {
884 CDEBUG(D_CACHE, "got "LPU64" extra grant\n", body->oa.o_grant);
885 __osc_update_grant(cli, body->oa.o_grant);
889 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
890 obd_count keylen, void *key, obd_count vallen,
891 void *val, struct ptlrpc_request_set *set);
893 static int osc_shrink_grant_interpret(const struct lu_env *env,
894 struct ptlrpc_request *req,
897 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
898 struct obdo *oa = ((struct osc_grant_args *)aa)->aa_oa;
899 struct ost_body *body;
902 __osc_update_grant(cli, oa->o_grant);
906 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
908 osc_update_grant(cli, body);
914 static void osc_shrink_grant_local(struct client_obd *cli, struct obdo *oa)
916 client_obd_list_lock(&cli->cl_loi_list_lock);
917 oa->o_grant = cli->cl_avail_grant / 4;
918 cli->cl_avail_grant -= oa->o_grant;
919 client_obd_list_unlock(&cli->cl_loi_list_lock);
920 if (!(oa->o_valid & OBD_MD_FLFLAGS)) {
921 oa->o_valid |= OBD_MD_FLFLAGS;
924 oa->o_flags |= OBD_FL_SHRINK_GRANT;
925 osc_update_next_shrink(cli);
928 /* Shrink the current grant, either from some large amount to enough for a
929 * full set of in-flight RPCs, or if we have already shrunk to that limit
930 * then to enough for a single RPC. This avoids keeping more grant than
931 * needed, and avoids shrinking the grant piecemeal. */
932 static int osc_shrink_grant(struct client_obd *cli)
934 long target = (cli->cl_max_rpcs_in_flight + 1) *
935 cli->cl_max_pages_per_rpc;
937 client_obd_list_lock(&cli->cl_loi_list_lock);
938 if (cli->cl_avail_grant <= target)
939 target = cli->cl_max_pages_per_rpc;
940 client_obd_list_unlock(&cli->cl_loi_list_lock);
942 return osc_shrink_grant_to_target(cli, target);
945 int osc_shrink_grant_to_target(struct client_obd *cli, long target)
948 struct ost_body *body;
951 client_obd_list_lock(&cli->cl_loi_list_lock);
952 /* Don't shrink if we are already above or below the desired limit
953 * We don't want to shrink below a single RPC, as that will negatively
954 * impact block allocation and long-term performance. */
955 if (target < cli->cl_max_pages_per_rpc)
956 target = cli->cl_max_pages_per_rpc;
958 if (target >= cli->cl_avail_grant) {
959 client_obd_list_unlock(&cli->cl_loi_list_lock);
962 client_obd_list_unlock(&cli->cl_loi_list_lock);
968 osc_announce_cached(cli, &body->oa, 0);
970 client_obd_list_lock(&cli->cl_loi_list_lock);
971 body->oa.o_grant = cli->cl_avail_grant - target;
972 cli->cl_avail_grant = target;
973 client_obd_list_unlock(&cli->cl_loi_list_lock);
974 if (!(body->oa.o_valid & OBD_MD_FLFLAGS)) {
975 body->oa.o_valid |= OBD_MD_FLFLAGS;
976 body->oa.o_flags = 0;
978 body->oa.o_flags |= OBD_FL_SHRINK_GRANT;
979 osc_update_next_shrink(cli);
981 rc = osc_set_info_async(NULL, cli->cl_import->imp_obd->obd_self_export,
982 sizeof(KEY_GRANT_SHRINK), KEY_GRANT_SHRINK,
983 sizeof(*body), body, NULL);
985 __osc_update_grant(cli, body->oa.o_grant);
990 #define GRANT_SHRINK_LIMIT PTLRPC_MAX_BRW_SIZE
991 static int osc_should_shrink_grant(struct client_obd *client)
993 cfs_time_t time = cfs_time_current();
994 cfs_time_t next_shrink = client->cl_next_shrink_grant;
996 if ((client->cl_import->imp_connect_data.ocd_connect_flags &
997 OBD_CONNECT_GRANT_SHRINK) == 0)
1000 if (cfs_time_aftereq(time, next_shrink - 5 * CFS_TICK)) {
1001 if (client->cl_import->imp_state == LUSTRE_IMP_FULL &&
1002 client->cl_avail_grant > GRANT_SHRINK_LIMIT)
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 if (opc == OST_WRITE)
1295 desc = ptlrpc_prep_bulk_imp(req, page_count,
1296 BULK_GET_SOURCE, OST_BULK_PORTAL);
1298 desc = ptlrpc_prep_bulk_imp(req, page_count,
1299 BULK_PUT_SINK, OST_BULK_PORTAL);
1302 GOTO(out, rc = -ENOMEM);
1303 /* NB request now owns desc and will free it when it gets freed */
1305 body = req_capsule_client_get(pill, &RMF_OST_BODY);
1306 ioobj = req_capsule_client_get(pill, &RMF_OBD_IOOBJ);
1307 niobuf = req_capsule_client_get(pill, &RMF_NIOBUF_REMOTE);
1308 LASSERT(body != NULL && ioobj != NULL && niobuf != NULL);
1310 lustre_set_wire_obdo(&body->oa, oa);
1312 obdo_to_ioobj(oa, ioobj);
1313 ioobj->ioo_bufcnt = niocount;
1314 osc_pack_capa(req, body, ocapa);
1315 LASSERT (page_count > 0);
1317 for (requested_nob = i = 0; i < page_count; i++, niobuf++) {
1318 struct brw_page *pg = pga[i];
1319 int poff = pg->off & ~CFS_PAGE_MASK;
1321 LASSERT(pg->count > 0);
1322 /* make sure there is no gap in the middle of page array */
1323 LASSERTF(page_count == 1 ||
1324 (ergo(i == 0, poff + pg->count == CFS_PAGE_SIZE) &&
1325 ergo(i > 0 && i < page_count - 1,
1326 poff == 0 && pg->count == CFS_PAGE_SIZE) &&
1327 ergo(i == page_count - 1, poff == 0)),
1328 "i: %d/%d pg: %p off: "LPU64", count: %u\n",
1329 i, page_count, pg, pg->off, pg->count);
1331 LASSERTF(i == 0 || pg->off > pg_prev->off,
1332 "i %d p_c %u pg %p [pri %lu ind %lu] off "LPU64
1333 " prev_pg %p [pri %lu ind %lu] off "LPU64"\n",
1335 pg->pg, page_private(pg->pg), pg->pg->index, pg->off,
1336 pg_prev->pg, page_private(pg_prev->pg),
1337 pg_prev->pg->index, pg_prev->off);
1339 LASSERTF(i == 0 || pg->off > pg_prev->off,
1340 "i %d p_c %u\n", i, page_count);
1342 LASSERT((pga[0]->flag & OBD_BRW_SRVLOCK) ==
1343 (pg->flag & OBD_BRW_SRVLOCK));
1345 ptlrpc_prep_bulk_page_pin(desc, pg->pg, poff, pg->count);
1346 requested_nob += pg->count;
1348 if (i > 0 && can_merge_pages(pg_prev, pg)) {
1350 niobuf->len += pg->count;
1352 niobuf->offset = pg->off;
1353 niobuf->len = pg->count;
1354 niobuf->flags = pg->flag;
1359 LASSERTF((void *)(niobuf - niocount) ==
1360 req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE),
1361 "want %p - real %p\n", req_capsule_client_get(&req->rq_pill,
1362 &RMF_NIOBUF_REMOTE), (void *)(niobuf - niocount));
1364 osc_announce_cached(cli, &body->oa, opc == OST_WRITE ? requested_nob:0);
1366 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
1367 body->oa.o_valid |= OBD_MD_FLFLAGS;
1368 body->oa.o_flags = 0;
1370 body->oa.o_flags |= OBD_FL_RECOV_RESEND;
1373 if (osc_should_shrink_grant(cli))
1374 osc_shrink_grant_local(cli, &body->oa);
1376 /* size[REQ_REC_OFF] still sizeof (*body) */
1377 if (opc == OST_WRITE) {
1378 if (cli->cl_checksum &&
1379 !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
1380 /* store cl_cksum_type in a local variable since
1381 * it can be changed via lprocfs */
1382 cksum_type_t cksum_type = cli->cl_cksum_type;
1384 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
1385 oa->o_flags &= OBD_FL_LOCAL_MASK;
1386 body->oa.o_flags = 0;
1388 body->oa.o_flags |= cksum_type_pack(cksum_type);
1389 body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1390 body->oa.o_cksum = osc_checksum_bulk(requested_nob,
1394 CDEBUG(D_PAGE, "checksum at write origin: %x\n",
1396 /* save this in 'oa', too, for later checking */
1397 oa->o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1398 oa->o_flags |= cksum_type_pack(cksum_type);
1400 /* clear out the checksum flag, in case this is a
1401 * resend but cl_checksum is no longer set. b=11238 */
1402 oa->o_valid &= ~OBD_MD_FLCKSUM;
1404 oa->o_cksum = body->oa.o_cksum;
1405 /* 1 RC per niobuf */
1406 req_capsule_set_size(pill, &RMF_RCS, RCL_SERVER,
1407 sizeof(__u32) * niocount);
1409 if (cli->cl_checksum &&
1410 !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
1411 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0)
1412 body->oa.o_flags = 0;
1413 body->oa.o_flags |= cksum_type_pack(cli->cl_cksum_type);
1414 body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1417 ptlrpc_request_set_replen(req);
1419 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
1420 aa = ptlrpc_req_async_args(req);
1422 aa->aa_requested_nob = requested_nob;
1423 aa->aa_nio_count = niocount;
1424 aa->aa_page_count = page_count;
1428 CFS_INIT_LIST_HEAD(&aa->aa_oaps);
1429 if (ocapa && reserve)
1430 aa->aa_ocapa = capa_get(ocapa);
1436 ptlrpc_req_finished(req);
1440 static int check_write_checksum(struct obdo *oa, const lnet_process_id_t *peer,
1441 __u32 client_cksum, __u32 server_cksum, int nob,
1442 obd_count page_count, struct brw_page **pga,
1443 cksum_type_t client_cksum_type)
1447 cksum_type_t cksum_type;
1449 if (server_cksum == client_cksum) {
1450 CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
1454 cksum_type = cksum_type_unpack(oa->o_valid & OBD_MD_FLFLAGS ?
1456 new_cksum = osc_checksum_bulk(nob, page_count, pga, OST_WRITE,
1459 if (cksum_type != client_cksum_type)
1460 msg = "the server did not use the checksum type specified in "
1461 "the original request - likely a protocol problem";
1462 else if (new_cksum == server_cksum)
1463 msg = "changed on the client after we checksummed it - "
1464 "likely false positive due to mmap IO (bug 11742)";
1465 else if (new_cksum == client_cksum)
1466 msg = "changed in transit before arrival at OST";
1468 msg = "changed in transit AND doesn't match the original - "
1469 "likely false positive due to mmap IO (bug 11742)";
1471 LCONSOLE_ERROR_MSG(0x132, "BAD WRITE CHECKSUM: %s: from %s inode "DFID
1472 " object "LPU64"/"LPU64" extent ["LPU64"-"LPU64"]\n",
1473 msg, libcfs_nid2str(peer->nid),
1474 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : (__u64)0,
1475 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0,
1476 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0,
1478 oa->o_valid & OBD_MD_FLGROUP ? oa->o_seq : (__u64)0,
1480 pga[page_count-1]->off + pga[page_count-1]->count - 1);
1481 CERROR("original client csum %x (type %x), server csum %x (type %x), "
1482 "client csum now %x\n", client_cksum, client_cksum_type,
1483 server_cksum, cksum_type, new_cksum);
1487 /* Note rc enters this function as number of bytes transferred */
1488 static int osc_brw_fini_request(struct ptlrpc_request *req, int rc)
1490 struct osc_brw_async_args *aa = (void *)&req->rq_async_args;
1491 const lnet_process_id_t *peer =
1492 &req->rq_import->imp_connection->c_peer;
1493 struct client_obd *cli = aa->aa_cli;
1494 struct ost_body *body;
1495 __u32 client_cksum = 0;
1498 if (rc < 0 && rc != -EDQUOT) {
1499 DEBUG_REQ(D_INFO, req, "Failed request with rc = %d\n", rc);
1503 LASSERTF(req->rq_repmsg != NULL, "rc = %d\n", rc);
1504 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
1506 DEBUG_REQ(D_INFO, req, "Can't unpack body\n");
1510 /* set/clear over quota flag for a uid/gid */
1511 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE &&
1512 body->oa.o_valid & (OBD_MD_FLUSRQUOTA | OBD_MD_FLGRPQUOTA)) {
1513 unsigned int qid[MAXQUOTAS] = { body->oa.o_uid, body->oa.o_gid };
1515 CDEBUG(D_QUOTA, "setdq for [%u %u] with valid "LPX64", flags %x\n",
1516 body->oa.o_uid, body->oa.o_gid, body->oa.o_valid,
1518 osc_quota_setdq(cli, qid, body->oa.o_valid, body->oa.o_flags);
1521 osc_update_grant(cli, body);
1526 if (aa->aa_oa->o_valid & OBD_MD_FLCKSUM)
1527 client_cksum = aa->aa_oa->o_cksum; /* save for later */
1529 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) {
1531 CERROR("Unexpected +ve rc %d\n", rc);
1534 LASSERT(req->rq_bulk->bd_nob == aa->aa_requested_nob);
1536 if (sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk))
1539 if ((aa->aa_oa->o_valid & OBD_MD_FLCKSUM) && client_cksum &&
1540 check_write_checksum(&body->oa, peer, client_cksum,
1541 body->oa.o_cksum, aa->aa_requested_nob,
1542 aa->aa_page_count, aa->aa_ppga,
1543 cksum_type_unpack(aa->aa_oa->o_flags)))
1546 rc = check_write_rcs(req, aa->aa_requested_nob,aa->aa_nio_count,
1547 aa->aa_page_count, aa->aa_ppga);
1551 /* The rest of this function executes only for OST_READs */
1553 /* if unwrap_bulk failed, return -EAGAIN to retry */
1554 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk, rc);
1556 GOTO(out, rc = -EAGAIN);
1558 if (rc > aa->aa_requested_nob) {
1559 CERROR("Unexpected rc %d (%d requested)\n", rc,
1560 aa->aa_requested_nob);
1564 if (rc != req->rq_bulk->bd_nob_transferred) {
1565 CERROR ("Unexpected rc %d (%d transferred)\n",
1566 rc, req->rq_bulk->bd_nob_transferred);
1570 if (rc < aa->aa_requested_nob)
1571 handle_short_read(rc, aa->aa_page_count, aa->aa_ppga);
1573 if (body->oa.o_valid & OBD_MD_FLCKSUM) {
1574 static int cksum_counter;
1575 __u32 server_cksum = body->oa.o_cksum;
1578 cksum_type_t cksum_type;
1580 cksum_type = cksum_type_unpack(body->oa.o_valid &OBD_MD_FLFLAGS?
1581 body->oa.o_flags : 0);
1582 client_cksum = osc_checksum_bulk(rc, aa->aa_page_count,
1583 aa->aa_ppga, OST_READ,
1586 if (peer->nid == req->rq_bulk->bd_sender) {
1590 router = libcfs_nid2str(req->rq_bulk->bd_sender);
1593 if (server_cksum == ~0 && rc > 0) {
1594 CERROR("Protocol error: server %s set the 'checksum' "
1595 "bit, but didn't send a checksum. Not fatal, "
1596 "but please notify on http://bugs.whamcloud.com/\n",
1597 libcfs_nid2str(peer->nid));
1598 } else if (server_cksum != client_cksum) {
1599 LCONSOLE_ERROR_MSG(0x133, "%s: BAD READ CHECKSUM: from "
1600 "%s%s%s inode "DFID" object "
1601 LPU64"/"LPU64" extent "
1602 "["LPU64"-"LPU64"]\n",
1603 req->rq_import->imp_obd->obd_name,
1604 libcfs_nid2str(peer->nid),
1606 body->oa.o_valid & OBD_MD_FLFID ?
1607 body->oa.o_parent_seq : (__u64)0,
1608 body->oa.o_valid & OBD_MD_FLFID ?
1609 body->oa.o_parent_oid : 0,
1610 body->oa.o_valid & OBD_MD_FLFID ?
1611 body->oa.o_parent_ver : 0,
1613 body->oa.o_valid & OBD_MD_FLGROUP ?
1614 body->oa.o_seq : (__u64)0,
1615 aa->aa_ppga[0]->off,
1616 aa->aa_ppga[aa->aa_page_count-1]->off +
1617 aa->aa_ppga[aa->aa_page_count-1]->count -
1619 CERROR("client %x, server %x, cksum_type %x\n",
1620 client_cksum, server_cksum, cksum_type);
1622 aa->aa_oa->o_cksum = client_cksum;
1626 CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
1629 } else if (unlikely(client_cksum)) {
1630 static int cksum_missed;
1633 if ((cksum_missed & (-cksum_missed)) == cksum_missed)
1634 CERROR("Checksum %u requested from %s but not sent\n",
1635 cksum_missed, libcfs_nid2str(peer->nid));
1641 lustre_get_wire_obdo(aa->aa_oa, &body->oa);
1646 static int osc_brw_internal(int cmd, struct obd_export *exp, struct obdo *oa,
1647 struct lov_stripe_md *lsm,
1648 obd_count page_count, struct brw_page **pga,
1649 struct obd_capa *ocapa)
1651 struct ptlrpc_request *req;
1654 int generation, resends = 0;
1655 struct l_wait_info lwi;
1659 cfs_waitq_init(&waitq);
1660 generation = exp->exp_obd->u.cli.cl_import->imp_generation;
1663 rc = osc_brw_prep_request(cmd, &exp->exp_obd->u.cli, oa, lsm,
1664 page_count, pga, &req, ocapa, 0, resends);
1669 req->rq_generation_set = 1;
1670 req->rq_import_generation = generation;
1671 req->rq_sent = cfs_time_current_sec() + resends;
1674 rc = ptlrpc_queue_wait(req);
1676 if (rc == -ETIMEDOUT && req->rq_resend) {
1677 DEBUG_REQ(D_HA, req, "BULK TIMEOUT");
1678 ptlrpc_req_finished(req);
1682 rc = osc_brw_fini_request(req, rc);
1684 ptlrpc_req_finished(req);
1685 /* When server return -EINPROGRESS, client should always retry
1686 * regardless of the number of times the bulk was resent already.*/
1687 if (osc_recoverable_error(rc)) {
1689 if (rc != -EINPROGRESS &&
1690 !client_should_resend(resends, &exp->exp_obd->u.cli)) {
1691 CERROR("%s: too many resend retries for object: "
1692 ""LPU64":"LPU64", rc = %d.\n",
1693 exp->exp_obd->obd_name, oa->o_id, oa->o_seq, rc);
1697 exp->exp_obd->u.cli.cl_import->imp_generation) {
1698 CDEBUG(D_HA, "%s: resend cross eviction for object: "
1699 ""LPU64":"LPU64", rc = %d.\n",
1700 exp->exp_obd->obd_name, oa->o_id, oa->o_seq, rc);
1704 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL,
1706 l_wait_event(waitq, 0, &lwi);
1711 if (rc == -EAGAIN || rc == -EINPROGRESS)
1716 static int osc_brw_redo_request(struct ptlrpc_request *request,
1717 struct osc_brw_async_args *aa, int rc)
1719 struct ptlrpc_request *new_req;
1720 struct osc_brw_async_args *new_aa;
1721 struct osc_async_page *oap;
1724 DEBUG_REQ(rc == -EINPROGRESS ? D_RPCTRACE : D_ERROR, request,
1725 "redo for recoverable error %d", rc);
1727 rc = osc_brw_prep_request(lustre_msg_get_opc(request->rq_reqmsg) ==
1728 OST_WRITE ? OBD_BRW_WRITE :OBD_BRW_READ,
1729 aa->aa_cli, aa->aa_oa,
1730 NULL /* lsm unused by osc currently */,
1731 aa->aa_page_count, aa->aa_ppga,
1732 &new_req, aa->aa_ocapa, 0, 1);
1736 cfs_list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
1737 if (oap->oap_request != NULL) {
1738 LASSERTF(request == oap->oap_request,
1739 "request %p != oap_request %p\n",
1740 request, oap->oap_request);
1741 if (oap->oap_interrupted) {
1742 ptlrpc_req_finished(new_req);
1747 /* New request takes over pga and oaps from old request.
1748 * Note that copying a list_head doesn't work, need to move it... */
1750 new_req->rq_interpret_reply = request->rq_interpret_reply;
1751 new_req->rq_async_args = request->rq_async_args;
1752 /* cap resend delay to the current request timeout, this is similar to
1753 * what ptlrpc does (see after_reply()) */
1754 if (aa->aa_resends > new_req->rq_timeout)
1755 new_req->rq_sent = cfs_time_current_sec() + new_req->rq_timeout;
1757 new_req->rq_sent = cfs_time_current_sec() + aa->aa_resends;
1758 new_req->rq_generation_set = 1;
1759 new_req->rq_import_generation = request->rq_import_generation;
1761 new_aa = ptlrpc_req_async_args(new_req);
1763 CFS_INIT_LIST_HEAD(&new_aa->aa_oaps);
1764 cfs_list_splice_init(&aa->aa_oaps, &new_aa->aa_oaps);
1765 CFS_INIT_LIST_HEAD(&new_aa->aa_exts);
1766 cfs_list_splice_init(&aa->aa_exts, &new_aa->aa_exts);
1768 cfs_list_for_each_entry(oap, &new_aa->aa_oaps, oap_rpc_item) {
1769 if (oap->oap_request) {
1770 ptlrpc_req_finished(oap->oap_request);
1771 oap->oap_request = ptlrpc_request_addref(new_req);
1775 new_aa->aa_ocapa = aa->aa_ocapa;
1776 aa->aa_ocapa = NULL;
1778 /* XXX: This code will run into problem if we're going to support
1779 * to add a series of BRW RPCs into a self-defined ptlrpc_request_set
1780 * and wait for all of them to be finished. We should inherit request
1781 * set from old request. */
1782 ptlrpcd_add_req(new_req, PDL_POLICY_SAME, -1);
1784 DEBUG_REQ(D_INFO, new_req, "new request");
1789 * ugh, we want disk allocation on the target to happen in offset order. we'll
1790 * follow sedgewicks advice and stick to the dead simple shellsort -- it'll do
1791 * fine for our small page arrays and doesn't require allocation. its an
1792 * insertion sort that swaps elements that are strides apart, shrinking the
1793 * stride down until its '1' and the array is sorted.
1795 static void sort_brw_pages(struct brw_page **array, int num)
1798 struct brw_page *tmp;
1802 for (stride = 1; stride < num ; stride = (stride * 3) + 1)
1807 for (i = stride ; i < num ; i++) {
1810 while (j >= stride && array[j - stride]->off > tmp->off) {
1811 array[j] = array[j - stride];
1816 } while (stride > 1);
1819 static obd_count max_unfragmented_pages(struct brw_page **pg, obd_count pages)
1825 LASSERT (pages > 0);
1826 offset = pg[i]->off & ~CFS_PAGE_MASK;
1830 if (pages == 0) /* that's all */
1833 if (offset + pg[i]->count < CFS_PAGE_SIZE)
1834 return count; /* doesn't end on page boundary */
1837 offset = pg[i]->off & ~CFS_PAGE_MASK;
1838 if (offset != 0) /* doesn't start on page boundary */
1845 static struct brw_page **osc_build_ppga(struct brw_page *pga, obd_count count)
1847 struct brw_page **ppga;
1850 OBD_ALLOC(ppga, sizeof(*ppga) * count);
1854 for (i = 0; i < count; i++)
1859 static void osc_release_ppga(struct brw_page **ppga, obd_count count)
1861 LASSERT(ppga != NULL);
1862 OBD_FREE(ppga, sizeof(*ppga) * count);
1865 static int osc_brw(int cmd, struct obd_export *exp, struct obd_info *oinfo,
1866 obd_count page_count, struct brw_page *pga,
1867 struct obd_trans_info *oti)
1869 struct obdo *saved_oa = NULL;
1870 struct brw_page **ppga, **orig;
1871 struct obd_import *imp = class_exp2cliimp(exp);
1872 struct client_obd *cli;
1873 int rc, page_count_orig;
1876 LASSERT((imp != NULL) && (imp->imp_obd != NULL));
1877 cli = &imp->imp_obd->u.cli;
1879 if (cmd & OBD_BRW_CHECK) {
1880 /* The caller just wants to know if there's a chance that this
1881 * I/O can succeed */
1883 if (imp->imp_invalid)
1888 /* test_brw with a failed create can trip this, maybe others. */
1889 LASSERT(cli->cl_max_pages_per_rpc);
1893 orig = ppga = osc_build_ppga(pga, page_count);
1896 page_count_orig = page_count;
1898 sort_brw_pages(ppga, page_count);
1899 while (page_count) {
1900 obd_count pages_per_brw;
1902 if (page_count > cli->cl_max_pages_per_rpc)
1903 pages_per_brw = cli->cl_max_pages_per_rpc;
1905 pages_per_brw = page_count;
1907 pages_per_brw = max_unfragmented_pages(ppga, pages_per_brw);
1909 if (saved_oa != NULL) {
1910 /* restore previously saved oa */
1911 *oinfo->oi_oa = *saved_oa;
1912 } else if (page_count > pages_per_brw) {
1913 /* save a copy of oa (brw will clobber it) */
1914 OBDO_ALLOC(saved_oa);
1915 if (saved_oa == NULL)
1916 GOTO(out, rc = -ENOMEM);
1917 *saved_oa = *oinfo->oi_oa;
1920 rc = osc_brw_internal(cmd, exp, oinfo->oi_oa, oinfo->oi_md,
1921 pages_per_brw, ppga, oinfo->oi_capa);
1926 page_count -= pages_per_brw;
1927 ppga += pages_per_brw;
1931 osc_release_ppga(orig, page_count_orig);
1933 if (saved_oa != NULL)
1934 OBDO_FREE(saved_oa);
1939 static int brw_interpret(const struct lu_env *env,
1940 struct ptlrpc_request *req, void *data, int rc)
1942 struct osc_brw_async_args *aa = data;
1943 struct osc_extent *ext;
1944 struct osc_extent *tmp;
1945 struct cl_object *obj = NULL;
1946 struct client_obd *cli = aa->aa_cli;
1949 rc = osc_brw_fini_request(req, rc);
1950 CDEBUG(D_INODE, "request %p aa %p rc %d\n", req, aa, rc);
1951 /* When server return -EINPROGRESS, client should always retry
1952 * regardless of the number of times the bulk was resent already. */
1953 if (osc_recoverable_error(rc)) {
1954 if (req->rq_import_generation !=
1955 req->rq_import->imp_generation) {
1956 CDEBUG(D_HA, "%s: resend cross eviction for object: "
1957 ""LPU64":"LPU64", rc = %d.\n",
1958 req->rq_import->imp_obd->obd_name,
1959 aa->aa_oa->o_id, aa->aa_oa->o_seq, rc);
1960 } else if (rc == -EINPROGRESS ||
1961 client_should_resend(aa->aa_resends, aa->aa_cli)) {
1962 rc = osc_brw_redo_request(req, aa, rc);
1964 CERROR("%s: too many resent retries for object: "
1965 ""LPU64":"LPU64", rc = %d.\n",
1966 req->rq_import->imp_obd->obd_name,
1967 aa->aa_oa->o_id, aa->aa_oa->o_seq, rc);
1972 else if (rc == -EAGAIN || rc == -EINPROGRESS)
1977 capa_put(aa->aa_ocapa);
1978 aa->aa_ocapa = NULL;
1981 cfs_list_for_each_entry_safe(ext, tmp, &aa->aa_exts, oe_link) {
1982 if (obj == NULL && rc == 0) {
1983 obj = osc2cl(ext->oe_obj);
1987 cfs_list_del_init(&ext->oe_link);
1988 osc_extent_finish(env, ext, 1, rc);
1990 LASSERT(cfs_list_empty(&aa->aa_exts));
1991 LASSERT(cfs_list_empty(&aa->aa_oaps));
1994 struct obdo *oa = aa->aa_oa;
1995 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
1996 unsigned long valid = 0;
1999 if (oa->o_valid & OBD_MD_FLBLOCKS) {
2000 attr->cat_blocks = oa->o_blocks;
2001 valid |= CAT_BLOCKS;
2003 if (oa->o_valid & OBD_MD_FLMTIME) {
2004 attr->cat_mtime = oa->o_mtime;
2007 if (oa->o_valid & OBD_MD_FLATIME) {
2008 attr->cat_atime = oa->o_atime;
2011 if (oa->o_valid & OBD_MD_FLCTIME) {
2012 attr->cat_ctime = oa->o_ctime;
2016 cl_object_attr_lock(obj);
2017 cl_object_attr_set(env, obj, attr, valid);
2018 cl_object_attr_unlock(obj);
2020 cl_object_put(env, obj);
2022 OBDO_FREE(aa->aa_oa);
2024 cl_req_completion(env, aa->aa_clerq, rc < 0 ? rc :
2025 req->rq_bulk->bd_nob_transferred);
2026 osc_release_ppga(aa->aa_ppga, aa->aa_page_count);
2027 ptlrpc_lprocfs_brw(req, req->rq_bulk->bd_nob_transferred);
2029 client_obd_list_lock(&cli->cl_loi_list_lock);
2030 /* We need to decrement before osc_ap_completion->osc_wake_cache_waiters
2031 * is called so we know whether to go to sync BRWs or wait for more
2032 * RPCs to complete */
2033 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE)
2034 cli->cl_w_in_flight--;
2036 cli->cl_r_in_flight--;
2037 osc_wake_cache_waiters(cli);
2038 client_obd_list_unlock(&cli->cl_loi_list_lock);
2040 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
2045 * Build an RPC by the list of extent @ext_list. The caller must ensure
2046 * that the total pages in this list are NOT over max pages per RPC.
2047 * Extents in the list must be in OES_RPC state.
2049 int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
2050 cfs_list_t *ext_list, int cmd, pdl_policy_t pol)
2052 struct ptlrpc_request *req = NULL;
2053 struct osc_extent *ext;
2054 CFS_LIST_HEAD(rpc_list);
2055 struct brw_page **pga = NULL;
2056 struct osc_brw_async_args *aa = NULL;
2057 struct obdo *oa = NULL;
2058 struct osc_async_page *oap;
2059 struct osc_async_page *tmp;
2060 struct cl_req *clerq = NULL;
2061 enum cl_req_type crt = (cmd & OBD_BRW_WRITE) ? CRT_WRITE : CRT_READ;
2062 struct ldlm_lock *lock = NULL;
2063 struct cl_req_attr crattr;
2064 obd_off starting_offset = OBD_OBJECT_EOF;
2065 obd_off ending_offset = 0;
2066 int i, rc, mpflag = 0, mem_tight = 0, page_count = 0;
2069 LASSERT(!cfs_list_empty(ext_list));
2071 /* add pages into rpc_list to build BRW rpc */
2072 cfs_list_for_each_entry(ext, ext_list, oe_link) {
2073 LASSERT(ext->oe_state == OES_RPC);
2074 mem_tight |= ext->oe_memalloc;
2075 cfs_list_for_each_entry(oap, &ext->oe_pages, oap_pending_item) {
2077 cfs_list_add_tail(&oap->oap_rpc_item, &rpc_list);
2078 if (starting_offset > oap->oap_obj_off)
2079 starting_offset = oap->oap_obj_off;
2081 LASSERT(oap->oap_page_off == 0);
2082 if (ending_offset < oap->oap_obj_off + oap->oap_count)
2083 ending_offset = oap->oap_obj_off +
2086 LASSERT(oap->oap_page_off + oap->oap_count ==
2092 mpflag = cfs_memory_pressure_get_and_set();
2094 memset(&crattr, 0, sizeof crattr);
2095 OBD_ALLOC(pga, sizeof(*pga) * page_count);
2097 GOTO(out, rc = -ENOMEM);
2101 GOTO(out, rc = -ENOMEM);
2104 cfs_list_for_each_entry(oap, &rpc_list, oap_rpc_item) {
2105 struct cl_page *page = oap2cl_page(oap);
2106 if (clerq == NULL) {
2107 clerq = cl_req_alloc(env, page, crt,
2108 1 /* only 1-object rpcs for
2111 GOTO(out, rc = PTR_ERR(clerq));
2112 lock = oap->oap_ldlm_lock;
2115 oap->oap_brw_flags |= OBD_BRW_MEMALLOC;
2116 pga[i] = &oap->oap_brw_page;
2117 pga[i]->off = oap->oap_obj_off + oap->oap_page_off;
2118 CDEBUG(0, "put page %p index %lu oap %p flg %x to pga\n",
2119 pga[i]->pg, cfs_page_index(oap->oap_page), oap, pga[i]->flag);
2121 cl_req_page_add(env, clerq, page);
2124 /* always get the data for the obdo for the rpc */
2125 LASSERT(clerq != NULL);
2127 crattr.cra_capa = NULL;
2128 memset(crattr.cra_jobid, 0, JOBSTATS_JOBID_SIZE);
2129 cl_req_attr_set(env, clerq, &crattr, ~0ULL);
2131 oa->o_handle = lock->l_remote_handle;
2132 oa->o_valid |= OBD_MD_FLHANDLE;
2135 rc = cl_req_prep(env, clerq);
2137 CERROR("cl_req_prep failed: %d\n", rc);
2141 sort_brw_pages(pga, page_count);
2142 rc = osc_brw_prep_request(cmd, cli, oa, NULL, page_count,
2143 pga, &req, crattr.cra_capa, 1, 0);
2145 CERROR("prep_req failed: %d\n", rc);
2149 req->rq_interpret_reply = brw_interpret;
2151 req->rq_memalloc = 1;
2153 /* Need to update the timestamps after the request is built in case
2154 * we race with setattr (locally or in queue at OST). If OST gets
2155 * later setattr before earlier BRW (as determined by the request xid),
2156 * the OST will not use BRW timestamps. Sadly, there is no obvious
2157 * way to do this in a single call. bug 10150 */
2158 cl_req_attr_set(env, clerq, &crattr,
2159 OBD_MD_FLMTIME|OBD_MD_FLCTIME|OBD_MD_FLATIME);
2161 lustre_msg_set_jobid(req->rq_reqmsg, crattr.cra_jobid);
2163 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
2164 aa = ptlrpc_req_async_args(req);
2165 CFS_INIT_LIST_HEAD(&aa->aa_oaps);
2166 cfs_list_splice_init(&rpc_list, &aa->aa_oaps);
2167 CFS_INIT_LIST_HEAD(&aa->aa_exts);
2168 cfs_list_splice_init(ext_list, &aa->aa_exts);
2169 aa->aa_clerq = clerq;
2171 /* queued sync pages can be torn down while the pages
2172 * were between the pending list and the rpc */
2174 cfs_list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
2175 /* only one oap gets a request reference */
2178 if (oap->oap_interrupted && !req->rq_intr) {
2179 CDEBUG(D_INODE, "oap %p in req %p interrupted\n",
2181 ptlrpc_mark_interrupted(req);
2185 tmp->oap_request = ptlrpc_request_addref(req);
2187 client_obd_list_lock(&cli->cl_loi_list_lock);
2188 starting_offset >>= CFS_PAGE_SHIFT;
2189 if (cmd == OBD_BRW_READ) {
2190 cli->cl_r_in_flight++;
2191 lprocfs_oh_tally_log2(&cli->cl_read_page_hist, page_count);
2192 lprocfs_oh_tally(&cli->cl_read_rpc_hist, cli->cl_r_in_flight);
2193 lprocfs_oh_tally_log2(&cli->cl_read_offset_hist,
2194 starting_offset + 1);
2196 cli->cl_w_in_flight++;
2197 lprocfs_oh_tally_log2(&cli->cl_write_page_hist, page_count);
2198 lprocfs_oh_tally(&cli->cl_write_rpc_hist, cli->cl_w_in_flight);
2199 lprocfs_oh_tally_log2(&cli->cl_write_offset_hist,
2200 starting_offset + 1);
2202 client_obd_list_unlock(&cli->cl_loi_list_lock);
2204 DEBUG_REQ(D_INODE, req, "%d pages, aa %p. now %dr/%dw in flight",
2205 page_count, aa, cli->cl_r_in_flight,
2206 cli->cl_w_in_flight);
2208 /* XXX: Maybe the caller can check the RPC bulk descriptor to
2209 * see which CPU/NUMA node the majority of pages were allocated
2210 * on, and try to assign the async RPC to the CPU core
2211 * (PDL_POLICY_PREFERRED) to reduce cross-CPU memory traffic.
2213 * But on the other hand, we expect that multiple ptlrpcd
2214 * threads and the initial write sponsor can run in parallel,
2215 * especially when data checksum is enabled, which is CPU-bound
2216 * operation and single ptlrpcd thread cannot process in time.
2217 * So more ptlrpcd threads sharing BRW load
2218 * (with PDL_POLICY_ROUND) seems better.
2220 ptlrpcd_add_req(req, pol, -1);
2226 cfs_memory_pressure_restore(mpflag);
2228 capa_put(crattr.cra_capa);
2230 LASSERT(req == NULL);
2235 OBD_FREE(pga, sizeof(*pga) * page_count);
2236 /* this should happen rarely and is pretty bad, it makes the
2237 * pending list not follow the dirty order */
2238 while (!cfs_list_empty(ext_list)) {
2239 ext = cfs_list_entry(ext_list->next, struct osc_extent,
2241 cfs_list_del_init(&ext->oe_link);
2242 osc_extent_finish(env, ext, 0, rc);
2244 if (clerq && !IS_ERR(clerq))
2245 cl_req_completion(env, clerq, rc);
2250 static int osc_set_lock_data_with_check(struct ldlm_lock *lock,
2251 struct ldlm_enqueue_info *einfo)
2253 void *data = einfo->ei_cbdata;
2256 LASSERT(lock != NULL);
2257 LASSERT(lock->l_blocking_ast == einfo->ei_cb_bl);
2258 LASSERT(lock->l_resource->lr_type == einfo->ei_type);
2259 LASSERT(lock->l_completion_ast == einfo->ei_cb_cp);
2260 LASSERT(lock->l_glimpse_ast == einfo->ei_cb_gl);
2262 lock_res_and_lock(lock);
2263 spin_lock(&osc_ast_guard);
2265 if (lock->l_ast_data == NULL)
2266 lock->l_ast_data = data;
2267 if (lock->l_ast_data == data)
2270 spin_unlock(&osc_ast_guard);
2271 unlock_res_and_lock(lock);
2276 static int osc_set_data_with_check(struct lustre_handle *lockh,
2277 struct ldlm_enqueue_info *einfo)
2279 struct ldlm_lock *lock = ldlm_handle2lock(lockh);
2283 set = osc_set_lock_data_with_check(lock, einfo);
2284 LDLM_LOCK_PUT(lock);
2286 CERROR("lockh %p, data %p - client evicted?\n",
2287 lockh, einfo->ei_cbdata);
2291 static int osc_change_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
2292 ldlm_iterator_t replace, void *data)
2294 struct ldlm_res_id res_id;
2295 struct obd_device *obd = class_exp2obd(exp);
2297 osc_build_res_name(lsm->lsm_object_id, lsm->lsm_object_seq, &res_id);
2298 ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
2302 /* find any ldlm lock of the inode in osc
2306 static int osc_find_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
2307 ldlm_iterator_t replace, void *data)
2309 struct ldlm_res_id res_id;
2310 struct obd_device *obd = class_exp2obd(exp);
2313 osc_build_res_name(lsm->lsm_object_id, lsm->lsm_object_seq, &res_id);
2314 rc = ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
2315 if (rc == LDLM_ITER_STOP)
2317 if (rc == LDLM_ITER_CONTINUE)
2322 static int osc_enqueue_fini(struct ptlrpc_request *req, struct ost_lvb *lvb,
2323 obd_enqueue_update_f upcall, void *cookie,
2324 __u64 *flags, int agl, int rc)
2326 int intent = *flags & LDLM_FL_HAS_INTENT;
2330 /* The request was created before ldlm_cli_enqueue call. */
2331 if (rc == ELDLM_LOCK_ABORTED) {
2332 struct ldlm_reply *rep;
2333 rep = req_capsule_server_get(&req->rq_pill,
2336 LASSERT(rep != NULL);
2337 if (rep->lock_policy_res1)
2338 rc = rep->lock_policy_res1;
2342 if ((intent != 0 && rc == ELDLM_LOCK_ABORTED && agl == 0) ||
2344 *flags |= LDLM_FL_LVB_READY;
2345 CDEBUG(D_INODE,"got kms "LPU64" blocks "LPU64" mtime "LPU64"\n",
2346 lvb->lvb_size, lvb->lvb_blocks, lvb->lvb_mtime);
2349 /* Call the update callback. */
2350 rc = (*upcall)(cookie, rc);
2354 static int osc_enqueue_interpret(const struct lu_env *env,
2355 struct ptlrpc_request *req,
2356 struct osc_enqueue_args *aa, int rc)
2358 struct ldlm_lock *lock;
2359 struct lustre_handle handle;
2361 struct ost_lvb *lvb;
2363 __u64 *flags = aa->oa_flags;
2365 /* Make a local copy of a lock handle and a mode, because aa->oa_*
2366 * might be freed anytime after lock upcall has been called. */
2367 lustre_handle_copy(&handle, aa->oa_lockh);
2368 mode = aa->oa_ei->ei_mode;
2370 /* ldlm_cli_enqueue is holding a reference on the lock, so it must
2372 lock = ldlm_handle2lock(&handle);
2374 /* Take an additional reference so that a blocking AST that
2375 * ldlm_cli_enqueue_fini() might post for a failed lock, is guaranteed
2376 * to arrive after an upcall has been executed by
2377 * osc_enqueue_fini(). */
2378 ldlm_lock_addref(&handle, mode);
2380 /* Let CP AST to grant the lock first. */
2381 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_ENQ_RACE, 1);
2383 if (aa->oa_agl && rc == ELDLM_LOCK_ABORTED) {
2388 lvb_len = sizeof(*aa->oa_lvb);
2391 /* Complete obtaining the lock procedure. */
2392 rc = ldlm_cli_enqueue_fini(aa->oa_exp, req, aa->oa_ei->ei_type, 1,
2393 mode, flags, lvb, lvb_len, &handle, rc);
2394 /* Complete osc stuff. */
2395 rc = osc_enqueue_fini(req, aa->oa_lvb, aa->oa_upcall, aa->oa_cookie,
2396 flags, aa->oa_agl, rc);
2398 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_CANCEL_RACE, 10);
2400 /* Release the lock for async request. */
2401 if (lustre_handle_is_used(&handle) && rc == ELDLM_OK)
2403 * Releases a reference taken by ldlm_cli_enqueue(), if it is
2404 * not already released by
2405 * ldlm_cli_enqueue_fini()->failed_lock_cleanup()
2407 ldlm_lock_decref(&handle, mode);
2409 LASSERTF(lock != NULL, "lockh %p, req %p, aa %p - client evicted?\n",
2410 aa->oa_lockh, req, aa);
2411 ldlm_lock_decref(&handle, mode);
2412 LDLM_LOCK_PUT(lock);
2416 void osc_update_enqueue(struct lustre_handle *lov_lockhp,
2417 struct lov_oinfo *loi, int flags,
2418 struct ost_lvb *lvb, __u32 mode, int rc)
2420 struct ldlm_lock *lock = ldlm_handle2lock(lov_lockhp);
2422 if (rc == ELDLM_OK) {
2425 LASSERT(lock != NULL);
2426 loi->loi_lvb = *lvb;
2427 tmp = loi->loi_lvb.lvb_size;
2428 /* Extend KMS up to the end of this lock and no further
2429 * A lock on [x,y] means a KMS of up to y + 1 bytes! */
2430 if (tmp > lock->l_policy_data.l_extent.end)
2431 tmp = lock->l_policy_data.l_extent.end + 1;
2432 if (tmp >= loi->loi_kms) {
2433 LDLM_DEBUG(lock, "lock acquired, setting rss="LPU64
2434 ", kms="LPU64, loi->loi_lvb.lvb_size, tmp);
2435 loi_kms_set(loi, tmp);
2437 LDLM_DEBUG(lock, "lock acquired, setting rss="
2438 LPU64"; leaving kms="LPU64", end="LPU64,
2439 loi->loi_lvb.lvb_size, loi->loi_kms,
2440 lock->l_policy_data.l_extent.end);
2442 ldlm_lock_allow_match(lock);
2443 } else if (rc == ELDLM_LOCK_ABORTED && (flags & LDLM_FL_HAS_INTENT)) {
2444 LASSERT(lock != NULL);
2445 loi->loi_lvb = *lvb;
2446 ldlm_lock_allow_match(lock);
2447 CDEBUG(D_INODE, "glimpsed, setting rss="LPU64"; leaving"
2448 " kms="LPU64"\n", loi->loi_lvb.lvb_size, loi->loi_kms);
2454 ldlm_lock_fail_match(lock);
2456 LDLM_LOCK_PUT(lock);
2459 EXPORT_SYMBOL(osc_update_enqueue);
2461 struct ptlrpc_request_set *PTLRPCD_SET = (void *)1;
2463 /* When enqueuing asynchronously, locks are not ordered, we can obtain a lock
2464 * from the 2nd OSC before a lock from the 1st one. This does not deadlock with
2465 * other synchronous requests, however keeping some locks and trying to obtain
2466 * others may take a considerable amount of time in a case of ost failure; and
2467 * when other sync requests do not get released lock from a client, the client
2468 * is excluded from the cluster -- such scenarious make the life difficult, so
2469 * release locks just after they are obtained. */
2470 int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2471 __u64 *flags, ldlm_policy_data_t *policy,
2472 struct ost_lvb *lvb, int kms_valid,
2473 obd_enqueue_update_f upcall, void *cookie,
2474 struct ldlm_enqueue_info *einfo,
2475 struct lustre_handle *lockh,
2476 struct ptlrpc_request_set *rqset, int async, int agl)
2478 struct obd_device *obd = exp->exp_obd;
2479 struct ptlrpc_request *req = NULL;
2480 int intent = *flags & LDLM_FL_HAS_INTENT;
2481 int match_lvb = (agl != 0 ? 0 : LDLM_FL_LVB_READY);
2486 /* Filesystem lock extents are extended to page boundaries so that
2487 * dealing with the page cache is a little smoother. */
2488 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2489 policy->l_extent.end |= ~CFS_PAGE_MASK;
2492 * kms is not valid when either object is completely fresh (so that no
2493 * locks are cached), or object was evicted. In the latter case cached
2494 * lock cannot be used, because it would prime inode state with
2495 * potentially stale LVB.
2500 /* Next, search for already existing extent locks that will cover us */
2501 /* If we're trying to read, we also search for an existing PW lock. The
2502 * VFS and page cache already protect us locally, so lots of readers/
2503 * writers can share a single PW lock.
2505 * There are problems with conversion deadlocks, so instead of
2506 * converting a read lock to a write lock, we'll just enqueue a new
2509 * At some point we should cancel the read lock instead of making them
2510 * send us a blocking callback, but there are problems with canceling
2511 * locks out from other users right now, too. */
2512 mode = einfo->ei_mode;
2513 if (einfo->ei_mode == LCK_PR)
2515 mode = ldlm_lock_match(obd->obd_namespace, *flags | match_lvb, res_id,
2516 einfo->ei_type, policy, mode, lockh, 0);
2518 struct ldlm_lock *matched = ldlm_handle2lock(lockh);
2520 if ((agl != 0) && !(matched->l_flags & LDLM_FL_LVB_READY)) {
2521 /* For AGL, if enqueue RPC is sent but the lock is not
2522 * granted, then skip to process this strpe.
2523 * Return -ECANCELED to tell the caller. */
2524 ldlm_lock_decref(lockh, mode);
2525 LDLM_LOCK_PUT(matched);
2527 } else if (osc_set_lock_data_with_check(matched, einfo)) {
2528 *flags |= LDLM_FL_LVB_READY;
2529 /* addref the lock only if not async requests and PW
2530 * lock is matched whereas we asked for PR. */
2531 if (!rqset && einfo->ei_mode != mode)
2532 ldlm_lock_addref(lockh, LCK_PR);
2534 /* I would like to be able to ASSERT here that
2535 * rss <= kms, but I can't, for reasons which
2536 * are explained in lov_enqueue() */
2539 /* We already have a lock, and it's referenced.
2541 * At this point, the cl_lock::cll_state is CLS_QUEUING,
2542 * AGL upcall may change it to CLS_HELD directly. */
2543 (*upcall)(cookie, ELDLM_OK);
2545 if (einfo->ei_mode != mode)
2546 ldlm_lock_decref(lockh, LCK_PW);
2548 /* For async requests, decref the lock. */
2549 ldlm_lock_decref(lockh, einfo->ei_mode);
2550 LDLM_LOCK_PUT(matched);
2553 ldlm_lock_decref(lockh, mode);
2554 LDLM_LOCK_PUT(matched);
2560 CFS_LIST_HEAD(cancels);
2561 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2562 &RQF_LDLM_ENQUEUE_LVB);
2566 rc = ldlm_prep_enqueue_req(exp, req, &cancels, 0);
2568 ptlrpc_request_free(req);
2572 req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
2574 ptlrpc_request_set_replen(req);
2577 /* users of osc_enqueue() can pass this flag for ldlm_lock_match() */
2578 *flags &= ~LDLM_FL_BLOCK_GRANTED;
2580 rc = ldlm_cli_enqueue(exp, &req, einfo, res_id, policy, flags, lvb,
2581 sizeof(*lvb), LVB_T_OST, lockh, async);
2584 struct osc_enqueue_args *aa;
2585 CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
2586 aa = ptlrpc_req_async_args(req);
2589 aa->oa_flags = flags;
2590 aa->oa_upcall = upcall;
2591 aa->oa_cookie = cookie;
2593 aa->oa_lockh = lockh;
2596 req->rq_interpret_reply =
2597 (ptlrpc_interpterer_t)osc_enqueue_interpret;
2598 if (rqset == PTLRPCD_SET)
2599 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
2601 ptlrpc_set_add_req(rqset, req);
2602 } else if (intent) {
2603 ptlrpc_req_finished(req);
2608 rc = osc_enqueue_fini(req, lvb, upcall, cookie, flags, agl, rc);
2610 ptlrpc_req_finished(req);
2615 static int osc_enqueue(struct obd_export *exp, struct obd_info *oinfo,
2616 struct ldlm_enqueue_info *einfo,
2617 struct ptlrpc_request_set *rqset)
2619 struct ldlm_res_id res_id;
2623 osc_build_res_name(oinfo->oi_md->lsm_object_id,
2624 oinfo->oi_md->lsm_object_seq, &res_id);
2626 rc = osc_enqueue_base(exp, &res_id, &oinfo->oi_flags, &oinfo->oi_policy,
2627 &oinfo->oi_md->lsm_oinfo[0]->loi_lvb,
2628 oinfo->oi_md->lsm_oinfo[0]->loi_kms_valid,
2629 oinfo->oi_cb_up, oinfo, einfo, oinfo->oi_lockh,
2630 rqset, rqset != NULL, 0);
2634 int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2635 __u32 type, ldlm_policy_data_t *policy, __u32 mode,
2636 int *flags, void *data, struct lustre_handle *lockh,
2639 struct obd_device *obd = exp->exp_obd;
2640 int lflags = *flags;
2644 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_MATCH))
2647 /* Filesystem lock extents are extended to page boundaries so that
2648 * dealing with the page cache is a little smoother */
2649 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2650 policy->l_extent.end |= ~CFS_PAGE_MASK;
2652 /* Next, search for already existing extent locks that will cover us */
2653 /* If we're trying to read, we also search for an existing PW lock. The
2654 * VFS and page cache already protect us locally, so lots of readers/
2655 * writers can share a single PW lock. */
2659 rc = ldlm_lock_match(obd->obd_namespace, lflags,
2660 res_id, type, policy, rc, lockh, unref);
2663 if (!osc_set_data_with_check(lockh, data)) {
2664 if (!(lflags & LDLM_FL_TEST_LOCK))
2665 ldlm_lock_decref(lockh, rc);
2669 if (!(lflags & LDLM_FL_TEST_LOCK) && mode != rc) {
2670 ldlm_lock_addref(lockh, LCK_PR);
2671 ldlm_lock_decref(lockh, LCK_PW);
2678 int osc_cancel_base(struct lustre_handle *lockh, __u32 mode)
2682 if (unlikely(mode == LCK_GROUP))
2683 ldlm_lock_decref_and_cancel(lockh, mode);
2685 ldlm_lock_decref(lockh, mode);
2690 static int osc_cancel(struct obd_export *exp, struct lov_stripe_md *md,
2691 __u32 mode, struct lustre_handle *lockh)
2694 RETURN(osc_cancel_base(lockh, mode));
2697 static int osc_cancel_unused(struct obd_export *exp,
2698 struct lov_stripe_md *lsm,
2699 ldlm_cancel_flags_t flags,
2702 struct obd_device *obd = class_exp2obd(exp);
2703 struct ldlm_res_id res_id, *resp = NULL;
2706 resp = osc_build_res_name(lsm->lsm_object_id,
2707 lsm->lsm_object_seq, &res_id);
2710 return ldlm_cli_cancel_unused(obd->obd_namespace, resp, flags, opaque);
2713 static int osc_statfs_interpret(const struct lu_env *env,
2714 struct ptlrpc_request *req,
2715 struct osc_async_args *aa, int rc)
2717 struct obd_statfs *msfs;
2721 /* The request has in fact never been sent
2722 * due to issues at a higher level (LOV).
2723 * Exit immediately since the caller is
2724 * aware of the problem and takes care
2725 * of the clean up */
2728 if ((rc == -ENOTCONN || rc == -EAGAIN) &&
2729 (aa->aa_oi->oi_flags & OBD_STATFS_NODELAY))
2735 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2737 GOTO(out, rc = -EPROTO);
2740 *aa->aa_oi->oi_osfs = *msfs;
2742 rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
2746 static int osc_statfs_async(struct obd_export *exp,
2747 struct obd_info *oinfo, __u64 max_age,
2748 struct ptlrpc_request_set *rqset)
2750 struct obd_device *obd = class_exp2obd(exp);
2751 struct ptlrpc_request *req;
2752 struct osc_async_args *aa;
2756 /* We could possibly pass max_age in the request (as an absolute
2757 * timestamp or a "seconds.usec ago") so the target can avoid doing
2758 * extra calls into the filesystem if that isn't necessary (e.g.
2759 * during mount that would help a bit). Having relative timestamps
2760 * is not so great if request processing is slow, while absolute
2761 * timestamps are not ideal because they need time synchronization. */
2762 req = ptlrpc_request_alloc(obd->u.cli.cl_import, &RQF_OST_STATFS);
2766 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2768 ptlrpc_request_free(req);
2771 ptlrpc_request_set_replen(req);
2772 req->rq_request_portal = OST_CREATE_PORTAL;
2773 ptlrpc_at_set_req_timeout(req);
2775 if (oinfo->oi_flags & OBD_STATFS_NODELAY) {
2776 /* procfs requests not want stat in wait for avoid deadlock */
2777 req->rq_no_resend = 1;
2778 req->rq_no_delay = 1;
2781 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_statfs_interpret;
2782 CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
2783 aa = ptlrpc_req_async_args(req);
2786 ptlrpc_set_add_req(rqset, req);
2790 static int osc_statfs(const struct lu_env *env, struct obd_export *exp,
2791 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
2793 struct obd_device *obd = class_exp2obd(exp);
2794 struct obd_statfs *msfs;
2795 struct ptlrpc_request *req;
2796 struct obd_import *imp = NULL;
2800 /*Since the request might also come from lprocfs, so we need
2801 *sync this with client_disconnect_export Bug15684*/
2802 down_read(&obd->u.cli.cl_sem);
2803 if (obd->u.cli.cl_import)
2804 imp = class_import_get(obd->u.cli.cl_import);
2805 up_read(&obd->u.cli.cl_sem);
2809 /* We could possibly pass max_age in the request (as an absolute
2810 * timestamp or a "seconds.usec ago") so the target can avoid doing
2811 * extra calls into the filesystem if that isn't necessary (e.g.
2812 * during mount that would help a bit). Having relative timestamps
2813 * is not so great if request processing is slow, while absolute
2814 * timestamps are not ideal because they need time synchronization. */
2815 req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
2817 class_import_put(imp);
2822 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2824 ptlrpc_request_free(req);
2827 ptlrpc_request_set_replen(req);
2828 req->rq_request_portal = OST_CREATE_PORTAL;
2829 ptlrpc_at_set_req_timeout(req);
2831 if (flags & OBD_STATFS_NODELAY) {
2832 /* procfs requests not want stat in wait for avoid deadlock */
2833 req->rq_no_resend = 1;
2834 req->rq_no_delay = 1;
2837 rc = ptlrpc_queue_wait(req);
2841 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2843 GOTO(out, rc = -EPROTO);
2850 ptlrpc_req_finished(req);
2854 /* Retrieve object striping information.
2856 * @lmmu is a pointer to an in-core struct with lmm_ost_count indicating
2857 * the maximum number of OST indices which will fit in the user buffer.
2858 * lmm_magic must be LOV_MAGIC (we only use 1 slot here).
2860 static int osc_getstripe(struct lov_stripe_md *lsm, struct lov_user_md *lump)
2862 /* we use lov_user_md_v3 because it is larger than lov_user_md_v1 */
2863 struct lov_user_md_v3 lum, *lumk;
2864 struct lov_user_ost_data_v1 *lmm_objects;
2865 int rc = 0, lum_size;
2871 /* we only need the header part from user space to get lmm_magic and
2872 * lmm_stripe_count, (the header part is common to v1 and v3) */
2873 lum_size = sizeof(struct lov_user_md_v1);
2874 if (cfs_copy_from_user(&lum, lump, lum_size))
2877 if ((lum.lmm_magic != LOV_USER_MAGIC_V1) &&
2878 (lum.lmm_magic != LOV_USER_MAGIC_V3))
2881 /* lov_user_md_vX and lov_mds_md_vX must have the same size */
2882 LASSERT(sizeof(struct lov_user_md_v1) == sizeof(struct lov_mds_md_v1));
2883 LASSERT(sizeof(struct lov_user_md_v3) == sizeof(struct lov_mds_md_v3));
2884 LASSERT(sizeof(lum.lmm_objects[0]) == sizeof(lumk->lmm_objects[0]));
2886 /* we can use lov_mds_md_size() to compute lum_size
2887 * because lov_user_md_vX and lov_mds_md_vX have the same size */
2888 if (lum.lmm_stripe_count > 0) {
2889 lum_size = lov_mds_md_size(lum.lmm_stripe_count, lum.lmm_magic);
2890 OBD_ALLOC(lumk, lum_size);
2894 if (lum.lmm_magic == LOV_USER_MAGIC_V1)
2895 lmm_objects = &(((struct lov_user_md_v1 *)lumk)->lmm_objects[0]);
2897 lmm_objects = &(lumk->lmm_objects[0]);
2898 lmm_objects->l_object_id = lsm->lsm_object_id;
2900 lum_size = lov_mds_md_size(0, lum.lmm_magic);
2904 lumk->lmm_object_id = lsm->lsm_object_id;
2905 lumk->lmm_object_seq = lsm->lsm_object_seq;
2906 lumk->lmm_stripe_count = 1;
2908 if (cfs_copy_to_user(lump, lumk, lum_size))
2912 OBD_FREE(lumk, lum_size);
2918 static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2919 void *karg, void *uarg)
2921 struct obd_device *obd = exp->exp_obd;
2922 struct obd_ioctl_data *data = karg;
2926 if (!cfs_try_module_get(THIS_MODULE)) {
2927 CERROR("Can't get module. Is it alive?");
2931 case OBD_IOC_LOV_GET_CONFIG: {
2933 struct lov_desc *desc;
2934 struct obd_uuid uuid;
2938 if (obd_ioctl_getdata(&buf, &len, (void *)uarg))
2939 GOTO(out, err = -EINVAL);
2941 data = (struct obd_ioctl_data *)buf;
2943 if (sizeof(*desc) > data->ioc_inllen1) {
2944 obd_ioctl_freedata(buf, len);
2945 GOTO(out, err = -EINVAL);
2948 if (data->ioc_inllen2 < sizeof(uuid)) {
2949 obd_ioctl_freedata(buf, len);
2950 GOTO(out, err = -EINVAL);
2953 desc = (struct lov_desc *)data->ioc_inlbuf1;
2954 desc->ld_tgt_count = 1;
2955 desc->ld_active_tgt_count = 1;
2956 desc->ld_default_stripe_count = 1;
2957 desc->ld_default_stripe_size = 0;
2958 desc->ld_default_stripe_offset = 0;
2959 desc->ld_pattern = 0;
2960 memcpy(&desc->ld_uuid, &obd->obd_uuid, sizeof(uuid));
2962 memcpy(data->ioc_inlbuf2, &obd->obd_uuid, sizeof(uuid));
2964 err = cfs_copy_to_user((void *)uarg, buf, len);
2967 obd_ioctl_freedata(buf, len);
2970 case LL_IOC_LOV_SETSTRIPE:
2971 err = obd_alloc_memmd(exp, karg);
2975 case LL_IOC_LOV_GETSTRIPE:
2976 err = osc_getstripe(karg, uarg);
2978 case OBD_IOC_CLIENT_RECOVER:
2979 err = ptlrpc_recover_import(obd->u.cli.cl_import,
2980 data->ioc_inlbuf1, 0);
2984 case IOC_OSC_SET_ACTIVE:
2985 err = ptlrpc_set_import_active(obd->u.cli.cl_import,
2988 case OBD_IOC_POLL_QUOTACHECK:
2989 err = osc_quota_poll_check(exp, (struct if_quotacheck *)karg);
2991 case OBD_IOC_PING_TARGET:
2992 err = ptlrpc_obd_ping(obd);
2995 CDEBUG(D_INODE, "unrecognised ioctl %#x by %s\n",
2996 cmd, cfs_curproc_comm());
2997 GOTO(out, err = -ENOTTY);
3000 cfs_module_put(THIS_MODULE);
3004 static int osc_get_info(const struct lu_env *env, struct obd_export *exp,
3005 obd_count keylen, void *key, __u32 *vallen, void *val,
3006 struct lov_stripe_md *lsm)
3009 if (!vallen || !val)
3012 if (KEY_IS(KEY_LOCK_TO_STRIPE)) {
3013 __u32 *stripe = val;
3014 *vallen = sizeof(*stripe);
3017 } else if (KEY_IS(KEY_LAST_ID)) {
3018 struct ptlrpc_request *req;
3023 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
3024 &RQF_OST_GET_INFO_LAST_ID);
3028 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
3029 RCL_CLIENT, keylen);
3030 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
3032 ptlrpc_request_free(req);
3036 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
3037 memcpy(tmp, key, keylen);
3039 req->rq_no_delay = req->rq_no_resend = 1;
3040 ptlrpc_request_set_replen(req);
3041 rc = ptlrpc_queue_wait(req);
3045 reply = req_capsule_server_get(&req->rq_pill, &RMF_OBD_ID);
3047 GOTO(out, rc = -EPROTO);
3049 *((obd_id *)val) = *reply;
3051 ptlrpc_req_finished(req);
3053 } else if (KEY_IS(KEY_FIEMAP)) {
3054 struct ptlrpc_request *req;
3055 struct ll_user_fiemap *reply;
3059 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
3060 &RQF_OST_GET_INFO_FIEMAP);
3064 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_KEY,
3065 RCL_CLIENT, keylen);
3066 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
3067 RCL_CLIENT, *vallen);
3068 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
3069 RCL_SERVER, *vallen);
3071 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
3073 ptlrpc_request_free(req);
3077 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_KEY);
3078 memcpy(tmp, key, keylen);
3079 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_VAL);
3080 memcpy(tmp, val, *vallen);
3082 ptlrpc_request_set_replen(req);
3083 rc = ptlrpc_queue_wait(req);
3087 reply = req_capsule_server_get(&req->rq_pill, &RMF_FIEMAP_VAL);
3089 GOTO(out1, rc = -EPROTO);
3091 memcpy(val, reply, *vallen);
3093 ptlrpc_req_finished(req);
3101 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
3102 obd_count keylen, void *key, obd_count vallen,
3103 void *val, struct ptlrpc_request_set *set)
3105 struct ptlrpc_request *req;
3106 struct obd_device *obd = exp->exp_obd;
3107 struct obd_import *imp = class_exp2cliimp(exp);
3112 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_SHUTDOWN, 10);
3114 if (KEY_IS(KEY_CHECKSUM)) {
3115 if (vallen != sizeof(int))
3117 exp->exp_obd->u.cli.cl_checksum = (*(int *)val) ? 1 : 0;
3121 if (KEY_IS(KEY_SPTLRPC_CONF)) {
3122 sptlrpc_conf_client_adapt(obd);
3126 if (KEY_IS(KEY_FLUSH_CTX)) {
3127 sptlrpc_import_flush_my_ctx(imp);
3131 if (KEY_IS(KEY_CACHE_SET)) {
3132 struct client_obd *cli = &obd->u.cli;
3134 LASSERT(cli->cl_cache == NULL); /* only once */
3135 cli->cl_cache = (struct cl_client_cache *)val;
3136 cfs_atomic_inc(&cli->cl_cache->ccc_users);
3137 cli->cl_lru_left = &cli->cl_cache->ccc_lru_left;
3139 /* add this osc into entity list */
3140 LASSERT(cfs_list_empty(&cli->cl_lru_osc));
3141 spin_lock(&cli->cl_cache->ccc_lru_lock);
3142 cfs_list_add(&cli->cl_lru_osc, &cli->cl_cache->ccc_lru);
3143 spin_unlock(&cli->cl_cache->ccc_lru_lock);
3148 if (KEY_IS(KEY_CACHE_LRU_SHRINK)) {
3149 struct client_obd *cli = &obd->u.cli;
3150 int nr = cfs_atomic_read(&cli->cl_lru_in_list) >> 1;
3151 int target = *(int *)val;
3153 nr = osc_lru_shrink(cli, min(nr, target));
3158 if (!set && !KEY_IS(KEY_GRANT_SHRINK))
3161 /* We pass all other commands directly to OST. Since nobody calls osc
3162 methods directly and everybody is supposed to go through LOV, we
3163 assume lov checked invalid values for us.
3164 The only recognised values so far are evict_by_nid and mds_conn.
3165 Even if something bad goes through, we'd get a -EINVAL from OST
3168 req = ptlrpc_request_alloc(imp, KEY_IS(KEY_GRANT_SHRINK) ?
3169 &RQF_OST_SET_GRANT_INFO :
3174 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
3175 RCL_CLIENT, keylen);
3176 if (!KEY_IS(KEY_GRANT_SHRINK))
3177 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
3178 RCL_CLIENT, vallen);
3179 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SET_INFO);
3181 ptlrpc_request_free(req);
3185 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
3186 memcpy(tmp, key, keylen);
3187 tmp = req_capsule_client_get(&req->rq_pill, KEY_IS(KEY_GRANT_SHRINK) ?
3190 memcpy(tmp, val, vallen);
3192 if (KEY_IS(KEY_GRANT_SHRINK)) {
3193 struct osc_grant_args *aa;
3196 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
3197 aa = ptlrpc_req_async_args(req);
3200 ptlrpc_req_finished(req);
3203 *oa = ((struct ost_body *)val)->oa;
3205 req->rq_interpret_reply = osc_shrink_grant_interpret;
3208 ptlrpc_request_set_replen(req);
3209 if (!KEY_IS(KEY_GRANT_SHRINK)) {
3210 LASSERT(set != NULL);
3211 ptlrpc_set_add_req(set, req);
3212 ptlrpc_check_set(NULL, set);
3214 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
3220 static int osc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
3221 struct obd_device *disk_obd, int *index)
3223 /* this code is not supposed to be used with LOD/OSP
3224 * to be removed soon */
3229 static int osc_llog_finish(struct obd_device *obd, int count)
3231 struct llog_ctxt *ctxt;
3235 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
3237 llog_cat_close(NULL, ctxt->loc_handle);
3238 llog_cleanup(NULL, ctxt);
3241 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
3243 llog_cleanup(NULL, ctxt);
3247 static int osc_reconnect(const struct lu_env *env,
3248 struct obd_export *exp, struct obd_device *obd,
3249 struct obd_uuid *cluuid,
3250 struct obd_connect_data *data,
3253 struct client_obd *cli = &obd->u.cli;
3255 if (data != NULL && (data->ocd_connect_flags & OBD_CONNECT_GRANT)) {
3258 client_obd_list_lock(&cli->cl_loi_list_lock);
3259 data->ocd_grant = (cli->cl_avail_grant + cli->cl_dirty) ?:
3260 2 * cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT;
3261 lost_grant = cli->cl_lost_grant;
3262 cli->cl_lost_grant = 0;
3263 client_obd_list_unlock(&cli->cl_loi_list_lock);
3265 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d"
3266 " ocd_grant: %d, lost: %ld.\n", data->ocd_connect_flags,
3267 data->ocd_version, data->ocd_grant, lost_grant);
3273 static int osc_disconnect(struct obd_export *exp)
3275 struct obd_device *obd = class_exp2obd(exp);
3276 struct llog_ctxt *ctxt;
3279 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
3281 if (obd->u.cli.cl_conn_count == 1) {
3282 /* Flush any remaining cancel messages out to the
3284 llog_sync(ctxt, exp, 0);
3286 llog_ctxt_put(ctxt);
3288 CDEBUG(D_HA, "No LLOG_SIZE_REPL_CTXT found in obd %p\n",
3292 rc = client_disconnect_export(exp);
3294 * Initially we put del_shrink_grant before disconnect_export, but it
3295 * causes the following problem if setup (connect) and cleanup
3296 * (disconnect) are tangled together.
3297 * connect p1 disconnect p2
3298 * ptlrpc_connect_import
3299 * ............... class_manual_cleanup
3302 * ptlrpc_connect_interrupt
3304 * add this client to shrink list
3306 * Bang! pinger trigger the shrink.
3307 * So the osc should be disconnected from the shrink list, after we
3308 * are sure the import has been destroyed. BUG18662
3310 if (obd->u.cli.cl_import == NULL)
3311 osc_del_shrink_grant(&obd->u.cli);
3315 static int osc_import_event(struct obd_device *obd,
3316 struct obd_import *imp,
3317 enum obd_import_event event)
3319 struct client_obd *cli;
3323 LASSERT(imp->imp_obd == obd);
3326 case IMP_EVENT_DISCON: {
3328 client_obd_list_lock(&cli->cl_loi_list_lock);
3329 cli->cl_avail_grant = 0;
3330 cli->cl_lost_grant = 0;
3331 client_obd_list_unlock(&cli->cl_loi_list_lock);
3334 case IMP_EVENT_INACTIVE: {
3335 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
3338 case IMP_EVENT_INVALIDATE: {
3339 struct ldlm_namespace *ns = obd->obd_namespace;
3343 env = cl_env_get(&refcheck);
3347 /* all pages go to failing rpcs due to the invalid
3349 osc_io_unplug(env, cli, NULL, PDL_POLICY_ROUND);
3351 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
3352 cl_env_put(env, &refcheck);
3357 case IMP_EVENT_ACTIVE: {
3358 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
3361 case IMP_EVENT_OCD: {
3362 struct obd_connect_data *ocd = &imp->imp_connect_data;
3364 if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT)
3365 osc_init_grant(&obd->u.cli, ocd);
3368 if (ocd->ocd_connect_flags & OBD_CONNECT_REQPORTAL)
3369 imp->imp_client->cli_request_portal =OST_REQUEST_PORTAL;
3371 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
3374 case IMP_EVENT_DEACTIVATE: {
3375 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DEACTIVATE, NULL);
3378 case IMP_EVENT_ACTIVATE: {
3379 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVATE, NULL);
3383 CERROR("Unknown import event %d\n", event);
3390 * Determine whether the lock can be canceled before replaying the lock
3391 * during recovery, see bug16774 for detailed information.
3393 * \retval zero the lock can't be canceled
3394 * \retval other ok to cancel
3396 static int osc_cancel_for_recovery(struct ldlm_lock *lock)
3398 check_res_locked(lock->l_resource);
3401 * Cancel all unused extent lock in granted mode LCK_PR or LCK_CR.
3403 * XXX as a future improvement, we can also cancel unused write lock
3404 * if it doesn't have dirty data and active mmaps.
3406 if (lock->l_resource->lr_type == LDLM_EXTENT &&
3407 (lock->l_granted_mode == LCK_PR ||
3408 lock->l_granted_mode == LCK_CR) &&
3409 (osc_dlm_lock_pageref(lock) == 0))
3415 static int brw_queue_work(const struct lu_env *env, void *data)
3417 struct client_obd *cli = data;
3419 CDEBUG(D_CACHE, "Run writeback work for client obd %p.\n", cli);
3421 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
3425 int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
3427 struct lprocfs_static_vars lvars = { 0 };
3428 struct client_obd *cli = &obd->u.cli;
3433 rc = ptlrpcd_addref();
3437 rc = client_obd_setup(obd, lcfg);
3439 GOTO(out_ptlrpcd, rc);
3441 handler = ptlrpcd_alloc_work(cli->cl_import, brw_queue_work, cli);
3442 if (IS_ERR(handler))
3443 GOTO(out_client_setup, rc = PTR_ERR(handler));
3444 cli->cl_writeback_work = handler;
3446 rc = osc_quota_setup(obd);
3448 GOTO(out_ptlrpcd_work, rc);
3450 cli->cl_grant_shrink_interval = GRANT_SHRINK_INTERVAL;
3451 lprocfs_osc_init_vars(&lvars);
3452 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0) {
3453 lproc_osc_attach_seqstat(obd);
3454 sptlrpc_lprocfs_cliobd_attach(obd);
3455 ptlrpc_lprocfs_register_obd(obd);
3458 /* We need to allocate a few requests more, because
3459 * brw_interpret tries to create new requests before freeing
3460 * previous ones, Ideally we want to have 2x max_rpcs_in_flight
3461 * reserved, but I'm afraid that might be too much wasted RAM
3462 * in fact, so 2 is just my guess and still should work. */
3463 cli->cl_import->imp_rq_pool =
3464 ptlrpc_init_rq_pool(cli->cl_max_rpcs_in_flight + 2,
3466 ptlrpc_add_rqs_to_pool);
3468 CFS_INIT_LIST_HEAD(&cli->cl_grant_shrink_list);
3469 ns_register_cancel(obd->obd_namespace, osc_cancel_for_recovery);
3473 ptlrpcd_destroy_work(handler);
3475 client_obd_cleanup(obd);
3481 static int osc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
3487 case OBD_CLEANUP_EARLY: {
3488 struct obd_import *imp;
3489 imp = obd->u.cli.cl_import;
3490 CDEBUG(D_HA, "Deactivating import %s\n", obd->obd_name);
3491 /* ptlrpc_abort_inflight to stop an mds_lov_synchronize */
3492 ptlrpc_deactivate_import(imp);
3493 spin_lock(&imp->imp_lock);
3494 imp->imp_pingable = 0;
3495 spin_unlock(&imp->imp_lock);
3498 case OBD_CLEANUP_EXPORTS: {
3499 struct client_obd *cli = &obd->u.cli;
3501 * for echo client, export may be on zombie list, wait for
3502 * zombie thread to cull it, because cli.cl_import will be
3503 * cleared in client_disconnect_export():
3504 * class_export_destroy() -> obd_cleanup() ->
3505 * echo_device_free() -> echo_client_cleanup() ->
3506 * obd_disconnect() -> osc_disconnect() ->
3507 * client_disconnect_export()
3509 obd_zombie_barrier();
3510 if (cli->cl_writeback_work) {
3511 ptlrpcd_destroy_work(cli->cl_writeback_work);
3512 cli->cl_writeback_work = NULL;
3514 obd_cleanup_client_import(obd);
3515 ptlrpc_lprocfs_unregister_obd(obd);
3516 lprocfs_obd_cleanup(obd);
3517 rc = obd_llog_finish(obd, 0);
3519 CERROR("failed to cleanup llogging subsystems\n");
3526 int osc_cleanup(struct obd_device *obd)
3528 struct client_obd *cli = &obd->u.cli;
3534 if (cli->cl_cache != NULL) {
3535 LASSERT(cfs_atomic_read(&cli->cl_cache->ccc_users) > 0);
3536 spin_lock(&cli->cl_cache->ccc_lru_lock);
3537 cfs_list_del_init(&cli->cl_lru_osc);
3538 spin_unlock(&cli->cl_cache->ccc_lru_lock);
3539 cli->cl_lru_left = NULL;
3540 cfs_atomic_dec(&cli->cl_cache->ccc_users);
3541 cli->cl_cache = NULL;
3544 /* free memory of osc quota cache */
3545 osc_quota_cleanup(obd);
3547 rc = client_obd_cleanup(obd);
3553 int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg)
3555 struct lprocfs_static_vars lvars = { 0 };
3558 lprocfs_osc_init_vars(&lvars);
3560 switch (lcfg->lcfg_command) {
3562 rc = class_process_proc_param(PARAM_OSC, lvars.obd_vars,
3572 static int osc_process_config(struct obd_device *obd, obd_count len, void *buf)
3574 return osc_process_config_base(obd, buf);
3577 struct obd_ops osc_obd_ops = {
3578 .o_owner = THIS_MODULE,
3579 .o_setup = osc_setup,
3580 .o_precleanup = osc_precleanup,
3581 .o_cleanup = osc_cleanup,
3582 .o_add_conn = client_import_add_conn,
3583 .o_del_conn = client_import_del_conn,
3584 .o_connect = client_connect_import,
3585 .o_reconnect = osc_reconnect,
3586 .o_disconnect = osc_disconnect,
3587 .o_statfs = osc_statfs,
3588 .o_statfs_async = osc_statfs_async,
3589 .o_packmd = osc_packmd,
3590 .o_unpackmd = osc_unpackmd,
3591 .o_create = osc_create,
3592 .o_destroy = osc_destroy,
3593 .o_getattr = osc_getattr,
3594 .o_getattr_async = osc_getattr_async,
3595 .o_setattr = osc_setattr,
3596 .o_setattr_async = osc_setattr_async,
3598 .o_punch = osc_punch,
3600 .o_enqueue = osc_enqueue,
3601 .o_change_cbdata = osc_change_cbdata,
3602 .o_find_cbdata = osc_find_cbdata,
3603 .o_cancel = osc_cancel,
3604 .o_cancel_unused = osc_cancel_unused,
3605 .o_iocontrol = osc_iocontrol,
3606 .o_get_info = osc_get_info,
3607 .o_set_info_async = osc_set_info_async,
3608 .o_import_event = osc_import_event,
3609 .o_llog_init = osc_llog_init,
3610 .o_llog_finish = osc_llog_finish,
3611 .o_process_config = osc_process_config,
3612 .o_quotactl = osc_quotactl,
3613 .o_quotacheck = osc_quotacheck,
3616 extern struct lu_kmem_descr osc_caches[];
3617 extern spinlock_t osc_ast_guard;
3618 extern struct lock_class_key osc_ast_guard_class;
3620 int __init osc_init(void)
3622 struct lprocfs_static_vars lvars = { 0 };
3626 /* print an address of _any_ initialized kernel symbol from this
3627 * module, to allow debugging with gdb that doesn't support data
3628 * symbols from modules.*/
3629 CDEBUG(D_INFO, "Lustre OSC module (%p).\n", &osc_caches);
3631 rc = lu_kmem_init(osc_caches);
3633 lprocfs_osc_init_vars(&lvars);
3635 rc = class_register_type(&osc_obd_ops, NULL, lvars.module_vars,
3636 LUSTRE_OSC_NAME, &osc_device_type);
3638 lu_kmem_fini(osc_caches);
3642 spin_lock_init(&osc_ast_guard);
3643 lockdep_set_class(&osc_ast_guard, &osc_ast_guard_class);
3649 static void /*__exit*/ osc_exit(void)
3651 class_unregister_type(LUSTRE_OSC_NAME);
3652 lu_kmem_fini(osc_caches);
3655 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3656 MODULE_DESCRIPTION("Lustre Object Storage Client (OSC)");
3657 MODULE_LICENSE("GPL");
3659 cfs_module(osc, LUSTRE_VERSION_STRING, osc_init, osc_exit);