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 (cli->cl_dirty - cli->cl_dirty_transit > cli->cl_dirty_max) {
832 CERROR("dirty %lu - %lu > dirty_max %lu\n",
833 cli->cl_dirty, cli->cl_dirty_transit, cli->cl_dirty_max);
835 } else if (cfs_atomic_read(&obd_dirty_pages) -
836 cfs_atomic_read(&obd_dirty_transit_pages) >
837 obd_max_dirty_pages + 1){
838 /* The cfs_atomic_read() allowing the cfs_atomic_inc() are
839 * not covered by a lock thus they may safely race and trip
840 * this CERROR() unless we add in a small fudge factor (+1). */
841 CERROR("dirty %d - %d > system dirty_max %d\n",
842 cfs_atomic_read(&obd_dirty_pages),
843 cfs_atomic_read(&obd_dirty_transit_pages),
844 obd_max_dirty_pages);
846 } else if (cli->cl_dirty_max - cli->cl_dirty > 0x7fffffff) {
847 CERROR("dirty %lu - dirty_max %lu too big???\n",
848 cli->cl_dirty, cli->cl_dirty_max);
851 long max_in_flight = (cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT)*
852 (cli->cl_max_rpcs_in_flight + 1);
853 oa->o_undirty = max(cli->cl_dirty_max, max_in_flight);
855 oa->o_grant = cli->cl_avail_grant + cli->cl_reserved_grant;
856 oa->o_dropped = cli->cl_lost_grant;
857 cli->cl_lost_grant = 0;
858 client_obd_list_unlock(&cli->cl_loi_list_lock);
859 CDEBUG(D_CACHE,"dirty: "LPU64" undirty: %u dropped %u grant: "LPU64"\n",
860 oa->o_dirty, oa->o_undirty, oa->o_dropped, oa->o_grant);
864 void osc_update_next_shrink(struct client_obd *cli)
866 cli->cl_next_shrink_grant =
867 cfs_time_shift(cli->cl_grant_shrink_interval);
868 CDEBUG(D_CACHE, "next time %ld to shrink grant \n",
869 cli->cl_next_shrink_grant);
872 static void __osc_update_grant(struct client_obd *cli, obd_size grant)
874 client_obd_list_lock(&cli->cl_loi_list_lock);
875 cli->cl_avail_grant += grant;
876 client_obd_list_unlock(&cli->cl_loi_list_lock);
879 static void osc_update_grant(struct client_obd *cli, struct ost_body *body)
881 if (body->oa.o_valid & OBD_MD_FLGRANT) {
882 CDEBUG(D_CACHE, "got "LPU64" extra grant\n", body->oa.o_grant);
883 __osc_update_grant(cli, body->oa.o_grant);
887 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
888 obd_count keylen, void *key, obd_count vallen,
889 void *val, struct ptlrpc_request_set *set);
891 static int osc_shrink_grant_interpret(const struct lu_env *env,
892 struct ptlrpc_request *req,
895 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
896 struct obdo *oa = ((struct osc_grant_args *)aa)->aa_oa;
897 struct ost_body *body;
900 __osc_update_grant(cli, oa->o_grant);
904 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
906 osc_update_grant(cli, body);
912 static void osc_shrink_grant_local(struct client_obd *cli, struct obdo *oa)
914 client_obd_list_lock(&cli->cl_loi_list_lock);
915 oa->o_grant = cli->cl_avail_grant / 4;
916 cli->cl_avail_grant -= oa->o_grant;
917 client_obd_list_unlock(&cli->cl_loi_list_lock);
918 if (!(oa->o_valid & OBD_MD_FLFLAGS)) {
919 oa->o_valid |= OBD_MD_FLFLAGS;
922 oa->o_flags |= OBD_FL_SHRINK_GRANT;
923 osc_update_next_shrink(cli);
926 /* Shrink the current grant, either from some large amount to enough for a
927 * full set of in-flight RPCs, or if we have already shrunk to that limit
928 * then to enough for a single RPC. This avoids keeping more grant than
929 * needed, and avoids shrinking the grant piecemeal. */
930 static int osc_shrink_grant(struct client_obd *cli)
932 long target = (cli->cl_max_rpcs_in_flight + 1) *
933 cli->cl_max_pages_per_rpc;
935 client_obd_list_lock(&cli->cl_loi_list_lock);
936 if (cli->cl_avail_grant <= target)
937 target = cli->cl_max_pages_per_rpc;
938 client_obd_list_unlock(&cli->cl_loi_list_lock);
940 return osc_shrink_grant_to_target(cli, target);
943 int osc_shrink_grant_to_target(struct client_obd *cli, long target)
946 struct ost_body *body;
949 client_obd_list_lock(&cli->cl_loi_list_lock);
950 /* Don't shrink if we are already above or below the desired limit
951 * We don't want to shrink below a single RPC, as that will negatively
952 * impact block allocation and long-term performance. */
953 if (target < cli->cl_max_pages_per_rpc)
954 target = cli->cl_max_pages_per_rpc;
956 if (target >= cli->cl_avail_grant) {
957 client_obd_list_unlock(&cli->cl_loi_list_lock);
960 client_obd_list_unlock(&cli->cl_loi_list_lock);
966 osc_announce_cached(cli, &body->oa, 0);
968 client_obd_list_lock(&cli->cl_loi_list_lock);
969 body->oa.o_grant = cli->cl_avail_grant - target;
970 cli->cl_avail_grant = target;
971 client_obd_list_unlock(&cli->cl_loi_list_lock);
972 if (!(body->oa.o_valid & OBD_MD_FLFLAGS)) {
973 body->oa.o_valid |= OBD_MD_FLFLAGS;
974 body->oa.o_flags = 0;
976 body->oa.o_flags |= OBD_FL_SHRINK_GRANT;
977 osc_update_next_shrink(cli);
979 rc = osc_set_info_async(NULL, cli->cl_import->imp_obd->obd_self_export,
980 sizeof(KEY_GRANT_SHRINK), KEY_GRANT_SHRINK,
981 sizeof(*body), body, NULL);
983 __osc_update_grant(cli, body->oa.o_grant);
988 #define GRANT_SHRINK_LIMIT PTLRPC_MAX_BRW_SIZE
989 static int osc_should_shrink_grant(struct client_obd *client)
991 cfs_time_t time = cfs_time_current();
992 cfs_time_t next_shrink = client->cl_next_shrink_grant;
994 if ((client->cl_import->imp_connect_data.ocd_connect_flags &
995 OBD_CONNECT_GRANT_SHRINK) == 0)
998 if (cfs_time_aftereq(time, next_shrink - 5 * CFS_TICK)) {
999 if (client->cl_import->imp_state == LUSTRE_IMP_FULL &&
1000 client->cl_avail_grant > GRANT_SHRINK_LIMIT)
1003 osc_update_next_shrink(client);
1008 static int osc_grant_shrink_grant_cb(struct timeout_item *item, void *data)
1010 struct client_obd *client;
1012 cfs_list_for_each_entry(client, &item->ti_obd_list,
1013 cl_grant_shrink_list) {
1014 if (osc_should_shrink_grant(client))
1015 osc_shrink_grant(client);
1020 static int osc_add_shrink_grant(struct client_obd *client)
1024 rc = ptlrpc_add_timeout_client(client->cl_grant_shrink_interval,
1026 osc_grant_shrink_grant_cb, NULL,
1027 &client->cl_grant_shrink_list);
1029 CERROR("add grant client %s error %d\n",
1030 client->cl_import->imp_obd->obd_name, rc);
1033 CDEBUG(D_CACHE, "add grant client %s \n",
1034 client->cl_import->imp_obd->obd_name);
1035 osc_update_next_shrink(client);
1039 static int osc_del_shrink_grant(struct client_obd *client)
1041 return ptlrpc_del_timeout_client(&client->cl_grant_shrink_list,
1045 static void osc_init_grant(struct client_obd *cli, struct obd_connect_data *ocd)
1048 * ocd_grant is the total grant amount we're expect to hold: if we've
1049 * been evicted, it's the new avail_grant amount, cl_dirty will drop
1050 * to 0 as inflight RPCs fail out; otherwise, it's avail_grant + dirty.
1052 * race is tolerable here: if we're evicted, but imp_state already
1053 * left EVICTED state, then cl_dirty must be 0 already.
1055 client_obd_list_lock(&cli->cl_loi_list_lock);
1056 if (cli->cl_import->imp_state == LUSTRE_IMP_EVICTED)
1057 cli->cl_avail_grant = ocd->ocd_grant;
1059 cli->cl_avail_grant = ocd->ocd_grant - cli->cl_dirty;
1061 if (cli->cl_avail_grant < 0) {
1062 CWARN("%s: available grant < 0, the OSS is probably not running"
1063 " with patch from bug20278 (%ld) \n",
1064 cli->cl_import->imp_obd->obd_name, cli->cl_avail_grant);
1065 /* workaround for 1.6 servers which do not have
1066 * the patch from bug20278 */
1067 cli->cl_avail_grant = ocd->ocd_grant;
1070 /* determine the appropriate chunk size used by osc_extent. */
1071 cli->cl_chunkbits = max_t(int, CFS_PAGE_SHIFT, ocd->ocd_blocksize);
1072 client_obd_list_unlock(&cli->cl_loi_list_lock);
1074 CDEBUG(D_CACHE, "%s, setting cl_avail_grant: %ld cl_lost_grant: %ld."
1075 "chunk bits: %d.\n", cli->cl_import->imp_obd->obd_name,
1076 cli->cl_avail_grant, cli->cl_lost_grant, cli->cl_chunkbits);
1078 if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT_SHRINK &&
1079 cfs_list_empty(&cli->cl_grant_shrink_list))
1080 osc_add_shrink_grant(cli);
1083 /* We assume that the reason this OSC got a short read is because it read
1084 * beyond the end of a stripe file; i.e. lustre is reading a sparse file
1085 * via the LOV, and it _knows_ it's reading inside the file, it's just that
1086 * this stripe never got written at or beyond this stripe offset yet. */
1087 static void handle_short_read(int nob_read, obd_count page_count,
1088 struct brw_page **pga)
1093 /* skip bytes read OK */
1094 while (nob_read > 0) {
1095 LASSERT (page_count > 0);
1097 if (pga[i]->count > nob_read) {
1098 /* EOF inside this page */
1099 ptr = cfs_kmap(pga[i]->pg) +
1100 (pga[i]->off & ~CFS_PAGE_MASK);
1101 memset(ptr + nob_read, 0, pga[i]->count - nob_read);
1102 cfs_kunmap(pga[i]->pg);
1108 nob_read -= pga[i]->count;
1113 /* zero remaining pages */
1114 while (page_count-- > 0) {
1115 ptr = cfs_kmap(pga[i]->pg) + (pga[i]->off & ~CFS_PAGE_MASK);
1116 memset(ptr, 0, pga[i]->count);
1117 cfs_kunmap(pga[i]->pg);
1122 static int check_write_rcs(struct ptlrpc_request *req,
1123 int requested_nob, int niocount,
1124 obd_count page_count, struct brw_page **pga)
1129 remote_rcs = req_capsule_server_sized_get(&req->rq_pill, &RMF_RCS,
1130 sizeof(*remote_rcs) *
1132 if (remote_rcs == NULL) {
1133 CDEBUG(D_INFO, "Missing/short RC vector on BRW_WRITE reply\n");
1137 /* return error if any niobuf was in error */
1138 for (i = 0; i < niocount; i++) {
1139 if ((int)remote_rcs[i] < 0)
1140 return(remote_rcs[i]);
1142 if (remote_rcs[i] != 0) {
1143 CDEBUG(D_INFO, "rc[%d] invalid (%d) req %p\n",
1144 i, remote_rcs[i], req);
1149 if (req->rq_bulk->bd_nob_transferred != requested_nob) {
1150 CERROR("Unexpected # bytes transferred: %d (requested %d)\n",
1151 req->rq_bulk->bd_nob_transferred, requested_nob);
1158 static inline int can_merge_pages(struct brw_page *p1, struct brw_page *p2)
1160 if (p1->flag != p2->flag) {
1161 unsigned mask = ~(OBD_BRW_FROM_GRANT| OBD_BRW_NOCACHE|
1162 OBD_BRW_SYNC|OBD_BRW_ASYNC|OBD_BRW_NOQUOTA);
1164 /* warn if we try to combine flags that we don't know to be
1165 * safe to combine */
1166 if (unlikely((p1->flag & mask) != (p2->flag & mask))) {
1167 CWARN("Saw flags 0x%x and 0x%x in the same brw, please "
1168 "report this at http://bugs.whamcloud.com/\n",
1169 p1->flag, p2->flag);
1174 return (p1->off + p1->count == p2->off);
1177 static obd_count osc_checksum_bulk(int nob, obd_count pg_count,
1178 struct brw_page **pga, int opc,
1179 cksum_type_t cksum_type)
1183 struct cfs_crypto_hash_desc *hdesc;
1184 unsigned int bufsize;
1186 unsigned char cfs_alg = cksum_obd2cfs(cksum_type);
1188 LASSERT(pg_count > 0);
1190 hdesc = cfs_crypto_hash_init(cfs_alg, NULL, 0);
1191 if (IS_ERR(hdesc)) {
1192 CERROR("Unable to initialize checksum hash %s\n",
1193 cfs_crypto_hash_name(cfs_alg));
1194 return PTR_ERR(hdesc);
1197 while (nob > 0 && pg_count > 0) {
1198 int count = pga[i]->count > nob ? nob : pga[i]->count;
1200 /* corrupt the data before we compute the checksum, to
1201 * simulate an OST->client data error */
1202 if (i == 0 && opc == OST_READ &&
1203 OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_RECEIVE)) {
1204 unsigned char *ptr = cfs_kmap(pga[i]->pg);
1205 int off = pga[i]->off & ~CFS_PAGE_MASK;
1206 memcpy(ptr + off, "bad1", min(4, nob));
1207 cfs_kunmap(pga[i]->pg);
1209 cfs_crypto_hash_update_page(hdesc, pga[i]->pg,
1210 pga[i]->off & ~CFS_PAGE_MASK,
1212 LL_CDEBUG_PAGE(D_PAGE, pga[i]->pg, "off %d checksum %x\n",
1213 (int)(pga[i]->off & ~CFS_PAGE_MASK), cksum);
1215 nob -= pga[i]->count;
1221 err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize);
1224 cfs_crypto_hash_final(hdesc, NULL, NULL);
1226 /* For sending we only compute the wrong checksum instead
1227 * of corrupting the data so it is still correct on a redo */
1228 if (opc == OST_WRITE && OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_SEND))
1234 static int osc_brw_prep_request(int cmd, struct client_obd *cli,struct obdo *oa,
1235 struct lov_stripe_md *lsm, obd_count page_count,
1236 struct brw_page **pga,
1237 struct ptlrpc_request **reqp,
1238 struct obd_capa *ocapa, int reserve,
1241 struct ptlrpc_request *req;
1242 struct ptlrpc_bulk_desc *desc;
1243 struct ost_body *body;
1244 struct obd_ioobj *ioobj;
1245 struct niobuf_remote *niobuf;
1246 int niocount, i, requested_nob, opc, rc;
1247 struct osc_brw_async_args *aa;
1248 struct req_capsule *pill;
1249 struct brw_page *pg_prev;
1252 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ))
1253 RETURN(-ENOMEM); /* Recoverable */
1254 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ2))
1255 RETURN(-EINVAL); /* Fatal */
1257 if ((cmd & OBD_BRW_WRITE) != 0) {
1259 req = ptlrpc_request_alloc_pool(cli->cl_import,
1260 cli->cl_import->imp_rq_pool,
1261 &RQF_OST_BRW_WRITE);
1264 req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_BRW_READ);
1269 for (niocount = i = 1; i < page_count; i++) {
1270 if (!can_merge_pages(pga[i - 1], pga[i]))
1274 pill = &req->rq_pill;
1275 req_capsule_set_size(pill, &RMF_OBD_IOOBJ, RCL_CLIENT,
1277 req_capsule_set_size(pill, &RMF_NIOBUF_REMOTE, RCL_CLIENT,
1278 niocount * sizeof(*niobuf));
1279 osc_set_capa_size(req, &RMF_CAPA1, ocapa);
1281 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, opc);
1283 ptlrpc_request_free(req);
1286 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
1287 ptlrpc_at_set_req_timeout(req);
1288 /* ask ptlrpc not to resend on EINPROGRESS since BRWs have their own
1290 req->rq_no_retry_einprogress = 1;
1292 if (opc == OST_WRITE)
1293 desc = ptlrpc_prep_bulk_imp(req, page_count,
1294 BULK_GET_SOURCE, OST_BULK_PORTAL);
1296 desc = ptlrpc_prep_bulk_imp(req, page_count,
1297 BULK_PUT_SINK, OST_BULK_PORTAL);
1300 GOTO(out, rc = -ENOMEM);
1301 /* NB request now owns desc and will free it when it gets freed */
1303 body = req_capsule_client_get(pill, &RMF_OST_BODY);
1304 ioobj = req_capsule_client_get(pill, &RMF_OBD_IOOBJ);
1305 niobuf = req_capsule_client_get(pill, &RMF_NIOBUF_REMOTE);
1306 LASSERT(body != NULL && ioobj != NULL && niobuf != NULL);
1308 lustre_set_wire_obdo(&body->oa, oa);
1310 obdo_to_ioobj(oa, ioobj);
1311 ioobj->ioo_bufcnt = niocount;
1312 osc_pack_capa(req, body, ocapa);
1313 LASSERT (page_count > 0);
1315 for (requested_nob = i = 0; i < page_count; i++, niobuf++) {
1316 struct brw_page *pg = pga[i];
1317 int poff = pg->off & ~CFS_PAGE_MASK;
1319 LASSERT(pg->count > 0);
1320 /* make sure there is no gap in the middle of page array */
1321 LASSERTF(page_count == 1 ||
1322 (ergo(i == 0, poff + pg->count == CFS_PAGE_SIZE) &&
1323 ergo(i > 0 && i < page_count - 1,
1324 poff == 0 && pg->count == CFS_PAGE_SIZE) &&
1325 ergo(i == page_count - 1, poff == 0)),
1326 "i: %d/%d pg: %p off: "LPU64", count: %u\n",
1327 i, page_count, pg, pg->off, pg->count);
1329 LASSERTF(i == 0 || pg->off > pg_prev->off,
1330 "i %d p_c %u pg %p [pri %lu ind %lu] off "LPU64
1331 " prev_pg %p [pri %lu ind %lu] off "LPU64"\n",
1333 pg->pg, page_private(pg->pg), pg->pg->index, pg->off,
1334 pg_prev->pg, page_private(pg_prev->pg),
1335 pg_prev->pg->index, pg_prev->off);
1337 LASSERTF(i == 0 || pg->off > pg_prev->off,
1338 "i %d p_c %u\n", i, page_count);
1340 LASSERT((pga[0]->flag & OBD_BRW_SRVLOCK) ==
1341 (pg->flag & OBD_BRW_SRVLOCK));
1343 ptlrpc_prep_bulk_page_pin(desc, pg->pg, poff, pg->count);
1344 requested_nob += pg->count;
1346 if (i > 0 && can_merge_pages(pg_prev, pg)) {
1348 niobuf->len += pg->count;
1350 niobuf->offset = pg->off;
1351 niobuf->len = pg->count;
1352 niobuf->flags = pg->flag;
1357 LASSERTF((void *)(niobuf - niocount) ==
1358 req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE),
1359 "want %p - real %p\n", req_capsule_client_get(&req->rq_pill,
1360 &RMF_NIOBUF_REMOTE), (void *)(niobuf - niocount));
1362 osc_announce_cached(cli, &body->oa, opc == OST_WRITE ? requested_nob:0);
1364 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
1365 body->oa.o_valid |= OBD_MD_FLFLAGS;
1366 body->oa.o_flags = 0;
1368 body->oa.o_flags |= OBD_FL_RECOV_RESEND;
1371 if (osc_should_shrink_grant(cli))
1372 osc_shrink_grant_local(cli, &body->oa);
1374 /* size[REQ_REC_OFF] still sizeof (*body) */
1375 if (opc == OST_WRITE) {
1376 if (cli->cl_checksum &&
1377 !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
1378 /* store cl_cksum_type in a local variable since
1379 * it can be changed via lprocfs */
1380 cksum_type_t cksum_type = cli->cl_cksum_type;
1382 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
1383 oa->o_flags &= OBD_FL_LOCAL_MASK;
1384 body->oa.o_flags = 0;
1386 body->oa.o_flags |= cksum_type_pack(cksum_type);
1387 body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1388 body->oa.o_cksum = osc_checksum_bulk(requested_nob,
1392 CDEBUG(D_PAGE, "checksum at write origin: %x\n",
1394 /* save this in 'oa', too, for later checking */
1395 oa->o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1396 oa->o_flags |= cksum_type_pack(cksum_type);
1398 /* clear out the checksum flag, in case this is a
1399 * resend but cl_checksum is no longer set. b=11238 */
1400 oa->o_valid &= ~OBD_MD_FLCKSUM;
1402 oa->o_cksum = body->oa.o_cksum;
1403 /* 1 RC per niobuf */
1404 req_capsule_set_size(pill, &RMF_RCS, RCL_SERVER,
1405 sizeof(__u32) * niocount);
1407 if (cli->cl_checksum &&
1408 !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
1409 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0)
1410 body->oa.o_flags = 0;
1411 body->oa.o_flags |= cksum_type_pack(cli->cl_cksum_type);
1412 body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1415 ptlrpc_request_set_replen(req);
1417 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
1418 aa = ptlrpc_req_async_args(req);
1420 aa->aa_requested_nob = requested_nob;
1421 aa->aa_nio_count = niocount;
1422 aa->aa_page_count = page_count;
1426 CFS_INIT_LIST_HEAD(&aa->aa_oaps);
1427 if (ocapa && reserve)
1428 aa->aa_ocapa = capa_get(ocapa);
1434 ptlrpc_req_finished(req);
1438 static int check_write_checksum(struct obdo *oa, const lnet_process_id_t *peer,
1439 __u32 client_cksum, __u32 server_cksum, int nob,
1440 obd_count page_count, struct brw_page **pga,
1441 cksum_type_t client_cksum_type)
1445 cksum_type_t cksum_type;
1447 if (server_cksum == client_cksum) {
1448 CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
1452 cksum_type = cksum_type_unpack(oa->o_valid & OBD_MD_FLFLAGS ?
1454 new_cksum = osc_checksum_bulk(nob, page_count, pga, OST_WRITE,
1457 if (cksum_type != client_cksum_type)
1458 msg = "the server did not use the checksum type specified in "
1459 "the original request - likely a protocol problem";
1460 else if (new_cksum == server_cksum)
1461 msg = "changed on the client after we checksummed it - "
1462 "likely false positive due to mmap IO (bug 11742)";
1463 else if (new_cksum == client_cksum)
1464 msg = "changed in transit before arrival at OST";
1466 msg = "changed in transit AND doesn't match the original - "
1467 "likely false positive due to mmap IO (bug 11742)";
1469 LCONSOLE_ERROR_MSG(0x132, "BAD WRITE CHECKSUM: %s: from %s inode "DFID
1470 " object "LPU64"/"LPU64" extent ["LPU64"-"LPU64"]\n",
1471 msg, libcfs_nid2str(peer->nid),
1472 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : (__u64)0,
1473 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0,
1474 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0,
1476 oa->o_valid & OBD_MD_FLGROUP ? oa->o_seq : (__u64)0,
1478 pga[page_count-1]->off + pga[page_count-1]->count - 1);
1479 CERROR("original client csum %x (type %x), server csum %x (type %x), "
1480 "client csum now %x\n", client_cksum, client_cksum_type,
1481 server_cksum, cksum_type, new_cksum);
1485 /* Note rc enters this function as number of bytes transferred */
1486 static int osc_brw_fini_request(struct ptlrpc_request *req, int rc)
1488 struct osc_brw_async_args *aa = (void *)&req->rq_async_args;
1489 const lnet_process_id_t *peer =
1490 &req->rq_import->imp_connection->c_peer;
1491 struct client_obd *cli = aa->aa_cli;
1492 struct ost_body *body;
1493 __u32 client_cksum = 0;
1496 if (rc < 0 && rc != -EDQUOT) {
1497 DEBUG_REQ(D_INFO, req, "Failed request with rc = %d\n", rc);
1501 LASSERTF(req->rq_repmsg != NULL, "rc = %d\n", rc);
1502 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
1504 DEBUG_REQ(D_INFO, req, "Can't unpack body\n");
1508 /* set/clear over quota flag for a uid/gid */
1509 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE &&
1510 body->oa.o_valid & (OBD_MD_FLUSRQUOTA | OBD_MD_FLGRPQUOTA)) {
1511 unsigned int qid[MAXQUOTAS] = { body->oa.o_uid, body->oa.o_gid };
1513 CDEBUG(D_QUOTA, "setdq for [%u %u] with valid "LPX64", flags %x\n",
1514 body->oa.o_uid, body->oa.o_gid, body->oa.o_valid,
1516 osc_quota_setdq(cli, qid, body->oa.o_valid, body->oa.o_flags);
1519 osc_update_grant(cli, body);
1524 if (aa->aa_oa->o_valid & OBD_MD_FLCKSUM)
1525 client_cksum = aa->aa_oa->o_cksum; /* save for later */
1527 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) {
1529 CERROR("Unexpected +ve rc %d\n", rc);
1532 LASSERT(req->rq_bulk->bd_nob == aa->aa_requested_nob);
1534 if (sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk))
1537 if ((aa->aa_oa->o_valid & OBD_MD_FLCKSUM) && client_cksum &&
1538 check_write_checksum(&body->oa, peer, client_cksum,
1539 body->oa.o_cksum, aa->aa_requested_nob,
1540 aa->aa_page_count, aa->aa_ppga,
1541 cksum_type_unpack(aa->aa_oa->o_flags)))
1544 rc = check_write_rcs(req, aa->aa_requested_nob,aa->aa_nio_count,
1545 aa->aa_page_count, aa->aa_ppga);
1549 /* The rest of this function executes only for OST_READs */
1551 /* if unwrap_bulk failed, return -EAGAIN to retry */
1552 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk, rc);
1554 GOTO(out, rc = -EAGAIN);
1556 if (rc > aa->aa_requested_nob) {
1557 CERROR("Unexpected rc %d (%d requested)\n", rc,
1558 aa->aa_requested_nob);
1562 if (rc != req->rq_bulk->bd_nob_transferred) {
1563 CERROR ("Unexpected rc %d (%d transferred)\n",
1564 rc, req->rq_bulk->bd_nob_transferred);
1568 if (rc < aa->aa_requested_nob)
1569 handle_short_read(rc, aa->aa_page_count, aa->aa_ppga);
1571 if (body->oa.o_valid & OBD_MD_FLCKSUM) {
1572 static int cksum_counter;
1573 __u32 server_cksum = body->oa.o_cksum;
1576 cksum_type_t cksum_type;
1578 cksum_type = cksum_type_unpack(body->oa.o_valid &OBD_MD_FLFLAGS?
1579 body->oa.o_flags : 0);
1580 client_cksum = osc_checksum_bulk(rc, aa->aa_page_count,
1581 aa->aa_ppga, OST_READ,
1584 if (peer->nid == req->rq_bulk->bd_sender) {
1588 router = libcfs_nid2str(req->rq_bulk->bd_sender);
1591 if (server_cksum == ~0 && rc > 0) {
1592 CERROR("Protocol error: server %s set the 'checksum' "
1593 "bit, but didn't send a checksum. Not fatal, "
1594 "but please notify on http://bugs.whamcloud.com/\n",
1595 libcfs_nid2str(peer->nid));
1596 } else if (server_cksum != client_cksum) {
1597 LCONSOLE_ERROR_MSG(0x133, "%s: BAD READ CHECKSUM: from "
1598 "%s%s%s inode "DFID" object "
1599 LPU64"/"LPU64" extent "
1600 "["LPU64"-"LPU64"]\n",
1601 req->rq_import->imp_obd->obd_name,
1602 libcfs_nid2str(peer->nid),
1604 body->oa.o_valid & OBD_MD_FLFID ?
1605 body->oa.o_parent_seq : (__u64)0,
1606 body->oa.o_valid & OBD_MD_FLFID ?
1607 body->oa.o_parent_oid : 0,
1608 body->oa.o_valid & OBD_MD_FLFID ?
1609 body->oa.o_parent_ver : 0,
1611 body->oa.o_valid & OBD_MD_FLGROUP ?
1612 body->oa.o_seq : (__u64)0,
1613 aa->aa_ppga[0]->off,
1614 aa->aa_ppga[aa->aa_page_count-1]->off +
1615 aa->aa_ppga[aa->aa_page_count-1]->count -
1617 CERROR("client %x, server %x, cksum_type %x\n",
1618 client_cksum, server_cksum, cksum_type);
1620 aa->aa_oa->o_cksum = client_cksum;
1624 CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
1627 } else if (unlikely(client_cksum)) {
1628 static int cksum_missed;
1631 if ((cksum_missed & (-cksum_missed)) == cksum_missed)
1632 CERROR("Checksum %u requested from %s but not sent\n",
1633 cksum_missed, libcfs_nid2str(peer->nid));
1639 lustre_get_wire_obdo(aa->aa_oa, &body->oa);
1644 static int osc_brw_internal(int cmd, struct obd_export *exp, struct obdo *oa,
1645 struct lov_stripe_md *lsm,
1646 obd_count page_count, struct brw_page **pga,
1647 struct obd_capa *ocapa)
1649 struct ptlrpc_request *req;
1652 int generation, resends = 0;
1653 struct l_wait_info lwi;
1657 cfs_waitq_init(&waitq);
1658 generation = exp->exp_obd->u.cli.cl_import->imp_generation;
1661 rc = osc_brw_prep_request(cmd, &exp->exp_obd->u.cli, oa, lsm,
1662 page_count, pga, &req, ocapa, 0, resends);
1667 req->rq_generation_set = 1;
1668 req->rq_import_generation = generation;
1669 req->rq_sent = cfs_time_current_sec() + resends;
1672 rc = ptlrpc_queue_wait(req);
1674 if (rc == -ETIMEDOUT && req->rq_resend) {
1675 DEBUG_REQ(D_HA, req, "BULK TIMEOUT");
1676 ptlrpc_req_finished(req);
1680 rc = osc_brw_fini_request(req, rc);
1682 ptlrpc_req_finished(req);
1683 /* When server return -EINPROGRESS, client should always retry
1684 * regardless of the number of times the bulk was resent already.*/
1685 if (osc_recoverable_error(rc)) {
1687 if (rc != -EINPROGRESS &&
1688 !client_should_resend(resends, &exp->exp_obd->u.cli)) {
1689 CERROR("%s: too many resend retries for object: "
1690 ""LPU64":"LPU64", rc = %d.\n",
1691 exp->exp_obd->obd_name, oa->o_id, oa->o_seq, rc);
1695 exp->exp_obd->u.cli.cl_import->imp_generation) {
1696 CDEBUG(D_HA, "%s: resend cross eviction for object: "
1697 ""LPU64":"LPU64", rc = %d.\n",
1698 exp->exp_obd->obd_name, oa->o_id, oa->o_seq, rc);
1702 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL,
1704 l_wait_event(waitq, 0, &lwi);
1709 if (rc == -EAGAIN || rc == -EINPROGRESS)
1714 static int osc_brw_redo_request(struct ptlrpc_request *request,
1715 struct osc_brw_async_args *aa, int rc)
1717 struct ptlrpc_request *new_req;
1718 struct osc_brw_async_args *new_aa;
1719 struct osc_async_page *oap;
1722 DEBUG_REQ(rc == -EINPROGRESS ? D_RPCTRACE : D_ERROR, request,
1723 "redo for recoverable error %d", rc);
1725 rc = osc_brw_prep_request(lustre_msg_get_opc(request->rq_reqmsg) ==
1726 OST_WRITE ? OBD_BRW_WRITE :OBD_BRW_READ,
1727 aa->aa_cli, aa->aa_oa,
1728 NULL /* lsm unused by osc currently */,
1729 aa->aa_page_count, aa->aa_ppga,
1730 &new_req, aa->aa_ocapa, 0, 1);
1734 cfs_list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
1735 if (oap->oap_request != NULL) {
1736 LASSERTF(request == oap->oap_request,
1737 "request %p != oap_request %p\n",
1738 request, oap->oap_request);
1739 if (oap->oap_interrupted) {
1740 ptlrpc_req_finished(new_req);
1745 /* New request takes over pga and oaps from old request.
1746 * Note that copying a list_head doesn't work, need to move it... */
1748 new_req->rq_interpret_reply = request->rq_interpret_reply;
1749 new_req->rq_async_args = request->rq_async_args;
1750 /* cap resend delay to the current request timeout, this is similar to
1751 * what ptlrpc does (see after_reply()) */
1752 if (aa->aa_resends > new_req->rq_timeout)
1753 new_req->rq_sent = cfs_time_current_sec() + new_req->rq_timeout;
1755 new_req->rq_sent = cfs_time_current_sec() + aa->aa_resends;
1756 new_req->rq_generation_set = 1;
1757 new_req->rq_import_generation = request->rq_import_generation;
1759 new_aa = ptlrpc_req_async_args(new_req);
1761 CFS_INIT_LIST_HEAD(&new_aa->aa_oaps);
1762 cfs_list_splice_init(&aa->aa_oaps, &new_aa->aa_oaps);
1763 CFS_INIT_LIST_HEAD(&new_aa->aa_exts);
1764 cfs_list_splice_init(&aa->aa_exts, &new_aa->aa_exts);
1766 cfs_list_for_each_entry(oap, &new_aa->aa_oaps, oap_rpc_item) {
1767 if (oap->oap_request) {
1768 ptlrpc_req_finished(oap->oap_request);
1769 oap->oap_request = ptlrpc_request_addref(new_req);
1773 new_aa->aa_ocapa = aa->aa_ocapa;
1774 aa->aa_ocapa = NULL;
1776 /* XXX: This code will run into problem if we're going to support
1777 * to add a series of BRW RPCs into a self-defined ptlrpc_request_set
1778 * and wait for all of them to be finished. We should inherit request
1779 * set from old request. */
1780 ptlrpcd_add_req(new_req, PDL_POLICY_SAME, -1);
1782 DEBUG_REQ(D_INFO, new_req, "new request");
1787 * ugh, we want disk allocation on the target to happen in offset order. we'll
1788 * follow sedgewicks advice and stick to the dead simple shellsort -- it'll do
1789 * fine for our small page arrays and doesn't require allocation. its an
1790 * insertion sort that swaps elements that are strides apart, shrinking the
1791 * stride down until its '1' and the array is sorted.
1793 static void sort_brw_pages(struct brw_page **array, int num)
1796 struct brw_page *tmp;
1800 for (stride = 1; stride < num ; stride = (stride * 3) + 1)
1805 for (i = stride ; i < num ; i++) {
1808 while (j >= stride && array[j - stride]->off > tmp->off) {
1809 array[j] = array[j - stride];
1814 } while (stride > 1);
1817 static obd_count max_unfragmented_pages(struct brw_page **pg, obd_count pages)
1823 LASSERT (pages > 0);
1824 offset = pg[i]->off & ~CFS_PAGE_MASK;
1828 if (pages == 0) /* that's all */
1831 if (offset + pg[i]->count < CFS_PAGE_SIZE)
1832 return count; /* doesn't end on page boundary */
1835 offset = pg[i]->off & ~CFS_PAGE_MASK;
1836 if (offset != 0) /* doesn't start on page boundary */
1843 static struct brw_page **osc_build_ppga(struct brw_page *pga, obd_count count)
1845 struct brw_page **ppga;
1848 OBD_ALLOC(ppga, sizeof(*ppga) * count);
1852 for (i = 0; i < count; i++)
1857 static void osc_release_ppga(struct brw_page **ppga, obd_count count)
1859 LASSERT(ppga != NULL);
1860 OBD_FREE(ppga, sizeof(*ppga) * count);
1863 static int osc_brw(int cmd, struct obd_export *exp, struct obd_info *oinfo,
1864 obd_count page_count, struct brw_page *pga,
1865 struct obd_trans_info *oti)
1867 struct obdo *saved_oa = NULL;
1868 struct brw_page **ppga, **orig;
1869 struct obd_import *imp = class_exp2cliimp(exp);
1870 struct client_obd *cli;
1871 int rc, page_count_orig;
1874 LASSERT((imp != NULL) && (imp->imp_obd != NULL));
1875 cli = &imp->imp_obd->u.cli;
1877 if (cmd & OBD_BRW_CHECK) {
1878 /* The caller just wants to know if there's a chance that this
1879 * I/O can succeed */
1881 if (imp->imp_invalid)
1886 /* test_brw with a failed create can trip this, maybe others. */
1887 LASSERT(cli->cl_max_pages_per_rpc);
1891 orig = ppga = osc_build_ppga(pga, page_count);
1894 page_count_orig = page_count;
1896 sort_brw_pages(ppga, page_count);
1897 while (page_count) {
1898 obd_count pages_per_brw;
1900 if (page_count > cli->cl_max_pages_per_rpc)
1901 pages_per_brw = cli->cl_max_pages_per_rpc;
1903 pages_per_brw = page_count;
1905 pages_per_brw = max_unfragmented_pages(ppga, pages_per_brw);
1907 if (saved_oa != NULL) {
1908 /* restore previously saved oa */
1909 *oinfo->oi_oa = *saved_oa;
1910 } else if (page_count > pages_per_brw) {
1911 /* save a copy of oa (brw will clobber it) */
1912 OBDO_ALLOC(saved_oa);
1913 if (saved_oa == NULL)
1914 GOTO(out, rc = -ENOMEM);
1915 *saved_oa = *oinfo->oi_oa;
1918 rc = osc_brw_internal(cmd, exp, oinfo->oi_oa, oinfo->oi_md,
1919 pages_per_brw, ppga, oinfo->oi_capa);
1924 page_count -= pages_per_brw;
1925 ppga += pages_per_brw;
1929 osc_release_ppga(orig, page_count_orig);
1931 if (saved_oa != NULL)
1932 OBDO_FREE(saved_oa);
1937 static int brw_interpret(const struct lu_env *env,
1938 struct ptlrpc_request *req, void *data, int rc)
1940 struct osc_brw_async_args *aa = data;
1941 struct osc_extent *ext;
1942 struct osc_extent *tmp;
1943 struct cl_object *obj = NULL;
1944 struct client_obd *cli = aa->aa_cli;
1947 rc = osc_brw_fini_request(req, rc);
1948 CDEBUG(D_INODE, "request %p aa %p rc %d\n", req, aa, rc);
1949 /* When server return -EINPROGRESS, client should always retry
1950 * regardless of the number of times the bulk was resent already. */
1951 if (osc_recoverable_error(rc)) {
1952 if (req->rq_import_generation !=
1953 req->rq_import->imp_generation) {
1954 CDEBUG(D_HA, "%s: resend cross eviction for object: "
1955 ""LPU64":"LPU64", rc = %d.\n",
1956 req->rq_import->imp_obd->obd_name,
1957 aa->aa_oa->o_id, aa->aa_oa->o_seq, rc);
1958 } else if (rc == -EINPROGRESS ||
1959 client_should_resend(aa->aa_resends, aa->aa_cli)) {
1960 rc = osc_brw_redo_request(req, aa, rc);
1962 CERROR("%s: too many resent retries for object: "
1963 ""LPU64":"LPU64", rc = %d.\n",
1964 req->rq_import->imp_obd->obd_name,
1965 aa->aa_oa->o_id, aa->aa_oa->o_seq, rc);
1970 else if (rc == -EAGAIN || rc == -EINPROGRESS)
1975 capa_put(aa->aa_ocapa);
1976 aa->aa_ocapa = NULL;
1979 cfs_list_for_each_entry_safe(ext, tmp, &aa->aa_exts, oe_link) {
1980 if (obj == NULL && rc == 0) {
1981 obj = osc2cl(ext->oe_obj);
1985 cfs_list_del_init(&ext->oe_link);
1986 osc_extent_finish(env, ext, 1, rc);
1988 LASSERT(cfs_list_empty(&aa->aa_exts));
1989 LASSERT(cfs_list_empty(&aa->aa_oaps));
1992 struct obdo *oa = aa->aa_oa;
1993 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
1994 unsigned long valid = 0;
1997 if (oa->o_valid & OBD_MD_FLBLOCKS) {
1998 attr->cat_blocks = oa->o_blocks;
1999 valid |= CAT_BLOCKS;
2001 if (oa->o_valid & OBD_MD_FLMTIME) {
2002 attr->cat_mtime = oa->o_mtime;
2005 if (oa->o_valid & OBD_MD_FLATIME) {
2006 attr->cat_atime = oa->o_atime;
2009 if (oa->o_valid & OBD_MD_FLCTIME) {
2010 attr->cat_ctime = oa->o_ctime;
2014 cl_object_attr_lock(obj);
2015 cl_object_attr_set(env, obj, attr, valid);
2016 cl_object_attr_unlock(obj);
2018 cl_object_put(env, obj);
2020 OBDO_FREE(aa->aa_oa);
2022 cl_req_completion(env, aa->aa_clerq, rc < 0 ? rc :
2023 req->rq_bulk->bd_nob_transferred);
2024 osc_release_ppga(aa->aa_ppga, aa->aa_page_count);
2025 ptlrpc_lprocfs_brw(req, req->rq_bulk->bd_nob_transferred);
2027 client_obd_list_lock(&cli->cl_loi_list_lock);
2028 /* We need to decrement before osc_ap_completion->osc_wake_cache_waiters
2029 * is called so we know whether to go to sync BRWs or wait for more
2030 * RPCs to complete */
2031 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE)
2032 cli->cl_w_in_flight--;
2034 cli->cl_r_in_flight--;
2035 osc_wake_cache_waiters(cli);
2036 client_obd_list_unlock(&cli->cl_loi_list_lock);
2038 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
2043 * Build an RPC by the list of extent @ext_list. The caller must ensure
2044 * that the total pages in this list are NOT over max pages per RPC.
2045 * Extents in the list must be in OES_RPC state.
2047 int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
2048 cfs_list_t *ext_list, int cmd, pdl_policy_t pol)
2050 struct ptlrpc_request *req = NULL;
2051 struct osc_extent *ext;
2052 CFS_LIST_HEAD(rpc_list);
2053 struct brw_page **pga = NULL;
2054 struct osc_brw_async_args *aa = NULL;
2055 struct obdo *oa = NULL;
2056 struct osc_async_page *oap;
2057 struct osc_async_page *tmp;
2058 struct cl_req *clerq = NULL;
2059 enum cl_req_type crt = (cmd & OBD_BRW_WRITE) ? CRT_WRITE : CRT_READ;
2060 struct ldlm_lock *lock = NULL;
2061 struct cl_req_attr crattr;
2062 obd_off starting_offset = OBD_OBJECT_EOF;
2063 obd_off ending_offset = 0;
2064 int i, rc, mpflag = 0, mem_tight = 0, page_count = 0;
2067 LASSERT(!cfs_list_empty(ext_list));
2069 /* add pages into rpc_list to build BRW rpc */
2070 cfs_list_for_each_entry(ext, ext_list, oe_link) {
2071 LASSERT(ext->oe_state == OES_RPC);
2072 mem_tight |= ext->oe_memalloc;
2073 cfs_list_for_each_entry(oap, &ext->oe_pages, oap_pending_item) {
2075 cfs_list_add_tail(&oap->oap_rpc_item, &rpc_list);
2076 if (starting_offset > oap->oap_obj_off)
2077 starting_offset = oap->oap_obj_off;
2079 LASSERT(oap->oap_page_off == 0);
2080 if (ending_offset < oap->oap_obj_off + oap->oap_count)
2081 ending_offset = oap->oap_obj_off +
2084 LASSERT(oap->oap_page_off + oap->oap_count ==
2090 mpflag = cfs_memory_pressure_get_and_set();
2092 memset(&crattr, 0, sizeof crattr);
2093 OBD_ALLOC(pga, sizeof(*pga) * page_count);
2095 GOTO(out, rc = -ENOMEM);
2099 GOTO(out, rc = -ENOMEM);
2102 cfs_list_for_each_entry(oap, &rpc_list, oap_rpc_item) {
2103 struct cl_page *page = oap2cl_page(oap);
2104 if (clerq == NULL) {
2105 clerq = cl_req_alloc(env, page, crt,
2106 1 /* only 1-object rpcs for
2109 GOTO(out, rc = PTR_ERR(clerq));
2110 lock = oap->oap_ldlm_lock;
2113 oap->oap_brw_flags |= OBD_BRW_MEMALLOC;
2114 pga[i] = &oap->oap_brw_page;
2115 pga[i]->off = oap->oap_obj_off + oap->oap_page_off;
2116 CDEBUG(0, "put page %p index %lu oap %p flg %x to pga\n",
2117 pga[i]->pg, cfs_page_index(oap->oap_page), oap, pga[i]->flag);
2119 cl_req_page_add(env, clerq, page);
2122 /* always get the data for the obdo for the rpc */
2123 LASSERT(clerq != NULL);
2125 crattr.cra_capa = NULL;
2126 memset(crattr.cra_jobid, 0, JOBSTATS_JOBID_SIZE);
2127 cl_req_attr_set(env, clerq, &crattr, ~0ULL);
2129 oa->o_handle = lock->l_remote_handle;
2130 oa->o_valid |= OBD_MD_FLHANDLE;
2133 rc = cl_req_prep(env, clerq);
2135 CERROR("cl_req_prep failed: %d\n", rc);
2139 sort_brw_pages(pga, page_count);
2140 rc = osc_brw_prep_request(cmd, cli, oa, NULL, page_count,
2141 pga, &req, crattr.cra_capa, 1, 0);
2143 CERROR("prep_req failed: %d\n", rc);
2147 req->rq_interpret_reply = brw_interpret;
2149 req->rq_memalloc = 1;
2151 /* Need to update the timestamps after the request is built in case
2152 * we race with setattr (locally or in queue at OST). If OST gets
2153 * later setattr before earlier BRW (as determined by the request xid),
2154 * the OST will not use BRW timestamps. Sadly, there is no obvious
2155 * way to do this in a single call. bug 10150 */
2156 cl_req_attr_set(env, clerq, &crattr,
2157 OBD_MD_FLMTIME|OBD_MD_FLCTIME|OBD_MD_FLATIME);
2159 lustre_msg_set_jobid(req->rq_reqmsg, crattr.cra_jobid);
2161 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
2162 aa = ptlrpc_req_async_args(req);
2163 CFS_INIT_LIST_HEAD(&aa->aa_oaps);
2164 cfs_list_splice_init(&rpc_list, &aa->aa_oaps);
2165 CFS_INIT_LIST_HEAD(&aa->aa_exts);
2166 cfs_list_splice_init(ext_list, &aa->aa_exts);
2167 aa->aa_clerq = clerq;
2169 /* queued sync pages can be torn down while the pages
2170 * were between the pending list and the rpc */
2172 cfs_list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
2173 /* only one oap gets a request reference */
2176 if (oap->oap_interrupted && !req->rq_intr) {
2177 CDEBUG(D_INODE, "oap %p in req %p interrupted\n",
2179 ptlrpc_mark_interrupted(req);
2183 tmp->oap_request = ptlrpc_request_addref(req);
2185 client_obd_list_lock(&cli->cl_loi_list_lock);
2186 starting_offset >>= CFS_PAGE_SHIFT;
2187 if (cmd == OBD_BRW_READ) {
2188 cli->cl_r_in_flight++;
2189 lprocfs_oh_tally_log2(&cli->cl_read_page_hist, page_count);
2190 lprocfs_oh_tally(&cli->cl_read_rpc_hist, cli->cl_r_in_flight);
2191 lprocfs_oh_tally_log2(&cli->cl_read_offset_hist,
2192 starting_offset + 1);
2194 cli->cl_w_in_flight++;
2195 lprocfs_oh_tally_log2(&cli->cl_write_page_hist, page_count);
2196 lprocfs_oh_tally(&cli->cl_write_rpc_hist, cli->cl_w_in_flight);
2197 lprocfs_oh_tally_log2(&cli->cl_write_offset_hist,
2198 starting_offset + 1);
2200 client_obd_list_unlock(&cli->cl_loi_list_lock);
2202 DEBUG_REQ(D_INODE, req, "%d pages, aa %p. now %dr/%dw in flight",
2203 page_count, aa, cli->cl_r_in_flight,
2204 cli->cl_w_in_flight);
2206 /* XXX: Maybe the caller can check the RPC bulk descriptor to
2207 * see which CPU/NUMA node the majority of pages were allocated
2208 * on, and try to assign the async RPC to the CPU core
2209 * (PDL_POLICY_PREFERRED) to reduce cross-CPU memory traffic.
2211 * But on the other hand, we expect that multiple ptlrpcd
2212 * threads and the initial write sponsor can run in parallel,
2213 * especially when data checksum is enabled, which is CPU-bound
2214 * operation and single ptlrpcd thread cannot process in time.
2215 * So more ptlrpcd threads sharing BRW load
2216 * (with PDL_POLICY_ROUND) seems better.
2218 ptlrpcd_add_req(req, pol, -1);
2224 cfs_memory_pressure_restore(mpflag);
2226 capa_put(crattr.cra_capa);
2228 LASSERT(req == NULL);
2233 OBD_FREE(pga, sizeof(*pga) * page_count);
2234 /* this should happen rarely and is pretty bad, it makes the
2235 * pending list not follow the dirty order */
2236 while (!cfs_list_empty(ext_list)) {
2237 ext = cfs_list_entry(ext_list->next, struct osc_extent,
2239 cfs_list_del_init(&ext->oe_link);
2240 osc_extent_finish(env, ext, 0, rc);
2242 if (clerq && !IS_ERR(clerq))
2243 cl_req_completion(env, clerq, rc);
2248 static int osc_set_lock_data_with_check(struct ldlm_lock *lock,
2249 struct ldlm_enqueue_info *einfo)
2251 void *data = einfo->ei_cbdata;
2254 LASSERT(lock != NULL);
2255 LASSERT(lock->l_blocking_ast == einfo->ei_cb_bl);
2256 LASSERT(lock->l_resource->lr_type == einfo->ei_type);
2257 LASSERT(lock->l_completion_ast == einfo->ei_cb_cp);
2258 LASSERT(lock->l_glimpse_ast == einfo->ei_cb_gl);
2260 lock_res_and_lock(lock);
2261 spin_lock(&osc_ast_guard);
2263 if (lock->l_ast_data == NULL)
2264 lock->l_ast_data = data;
2265 if (lock->l_ast_data == data)
2268 spin_unlock(&osc_ast_guard);
2269 unlock_res_and_lock(lock);
2274 static int osc_set_data_with_check(struct lustre_handle *lockh,
2275 struct ldlm_enqueue_info *einfo)
2277 struct ldlm_lock *lock = ldlm_handle2lock(lockh);
2281 set = osc_set_lock_data_with_check(lock, einfo);
2282 LDLM_LOCK_PUT(lock);
2284 CERROR("lockh %p, data %p - client evicted?\n",
2285 lockh, einfo->ei_cbdata);
2289 static int osc_change_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
2290 ldlm_iterator_t replace, void *data)
2292 struct ldlm_res_id res_id;
2293 struct obd_device *obd = class_exp2obd(exp);
2295 osc_build_res_name(lsm->lsm_object_id, lsm->lsm_object_seq, &res_id);
2296 ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
2300 /* find any ldlm lock of the inode in osc
2304 static int osc_find_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
2305 ldlm_iterator_t replace, void *data)
2307 struct ldlm_res_id res_id;
2308 struct obd_device *obd = class_exp2obd(exp);
2311 osc_build_res_name(lsm->lsm_object_id, lsm->lsm_object_seq, &res_id);
2312 rc = ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
2313 if (rc == LDLM_ITER_STOP)
2315 if (rc == LDLM_ITER_CONTINUE)
2320 static int osc_enqueue_fini(struct ptlrpc_request *req, struct ost_lvb *lvb,
2321 obd_enqueue_update_f upcall, void *cookie,
2322 __u64 *flags, int agl, int rc)
2324 int intent = *flags & LDLM_FL_HAS_INTENT;
2328 /* The request was created before ldlm_cli_enqueue call. */
2329 if (rc == ELDLM_LOCK_ABORTED) {
2330 struct ldlm_reply *rep;
2331 rep = req_capsule_server_get(&req->rq_pill,
2334 LASSERT(rep != NULL);
2335 if (rep->lock_policy_res1)
2336 rc = rep->lock_policy_res1;
2340 if ((intent != 0 && rc == ELDLM_LOCK_ABORTED && agl == 0) ||
2342 *flags |= LDLM_FL_LVB_READY;
2343 CDEBUG(D_INODE,"got kms "LPU64" blocks "LPU64" mtime "LPU64"\n",
2344 lvb->lvb_size, lvb->lvb_blocks, lvb->lvb_mtime);
2347 /* Call the update callback. */
2348 rc = (*upcall)(cookie, rc);
2352 static int osc_enqueue_interpret(const struct lu_env *env,
2353 struct ptlrpc_request *req,
2354 struct osc_enqueue_args *aa, int rc)
2356 struct ldlm_lock *lock;
2357 struct lustre_handle handle;
2359 struct ost_lvb *lvb;
2361 __u64 *flags = aa->oa_flags;
2363 /* Make a local copy of a lock handle and a mode, because aa->oa_*
2364 * might be freed anytime after lock upcall has been called. */
2365 lustre_handle_copy(&handle, aa->oa_lockh);
2366 mode = aa->oa_ei->ei_mode;
2368 /* ldlm_cli_enqueue is holding a reference on the lock, so it must
2370 lock = ldlm_handle2lock(&handle);
2372 /* Take an additional reference so that a blocking AST that
2373 * ldlm_cli_enqueue_fini() might post for a failed lock, is guaranteed
2374 * to arrive after an upcall has been executed by
2375 * osc_enqueue_fini(). */
2376 ldlm_lock_addref(&handle, mode);
2378 /* Let CP AST to grant the lock first. */
2379 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_ENQ_RACE, 1);
2381 if (aa->oa_agl && rc == ELDLM_LOCK_ABORTED) {
2386 lvb_len = sizeof(*aa->oa_lvb);
2389 /* Complete obtaining the lock procedure. */
2390 rc = ldlm_cli_enqueue_fini(aa->oa_exp, req, aa->oa_ei->ei_type, 1,
2391 mode, flags, lvb, lvb_len, &handle, rc);
2392 /* Complete osc stuff. */
2393 rc = osc_enqueue_fini(req, aa->oa_lvb, aa->oa_upcall, aa->oa_cookie,
2394 flags, aa->oa_agl, rc);
2396 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_CANCEL_RACE, 10);
2398 /* Release the lock for async request. */
2399 if (lustre_handle_is_used(&handle) && rc == ELDLM_OK)
2401 * Releases a reference taken by ldlm_cli_enqueue(), if it is
2402 * not already released by
2403 * ldlm_cli_enqueue_fini()->failed_lock_cleanup()
2405 ldlm_lock_decref(&handle, mode);
2407 LASSERTF(lock != NULL, "lockh %p, req %p, aa %p - client evicted?\n",
2408 aa->oa_lockh, req, aa);
2409 ldlm_lock_decref(&handle, mode);
2410 LDLM_LOCK_PUT(lock);
2414 void osc_update_enqueue(struct lustre_handle *lov_lockhp,
2415 struct lov_oinfo *loi, int flags,
2416 struct ost_lvb *lvb, __u32 mode, int rc)
2418 struct ldlm_lock *lock = ldlm_handle2lock(lov_lockhp);
2420 if (rc == ELDLM_OK) {
2423 LASSERT(lock != NULL);
2424 loi->loi_lvb = *lvb;
2425 tmp = loi->loi_lvb.lvb_size;
2426 /* Extend KMS up to the end of this lock and no further
2427 * A lock on [x,y] means a KMS of up to y + 1 bytes! */
2428 if (tmp > lock->l_policy_data.l_extent.end)
2429 tmp = lock->l_policy_data.l_extent.end + 1;
2430 if (tmp >= loi->loi_kms) {
2431 LDLM_DEBUG(lock, "lock acquired, setting rss="LPU64
2432 ", kms="LPU64, loi->loi_lvb.lvb_size, tmp);
2433 loi_kms_set(loi, tmp);
2435 LDLM_DEBUG(lock, "lock acquired, setting rss="
2436 LPU64"; leaving kms="LPU64", end="LPU64,
2437 loi->loi_lvb.lvb_size, loi->loi_kms,
2438 lock->l_policy_data.l_extent.end);
2440 ldlm_lock_allow_match(lock);
2441 } else if (rc == ELDLM_LOCK_ABORTED && (flags & LDLM_FL_HAS_INTENT)) {
2442 LASSERT(lock != NULL);
2443 loi->loi_lvb = *lvb;
2444 ldlm_lock_allow_match(lock);
2445 CDEBUG(D_INODE, "glimpsed, setting rss="LPU64"; leaving"
2446 " kms="LPU64"\n", loi->loi_lvb.lvb_size, loi->loi_kms);
2452 ldlm_lock_fail_match(lock);
2454 LDLM_LOCK_PUT(lock);
2457 EXPORT_SYMBOL(osc_update_enqueue);
2459 struct ptlrpc_request_set *PTLRPCD_SET = (void *)1;
2461 /* When enqueuing asynchronously, locks are not ordered, we can obtain a lock
2462 * from the 2nd OSC before a lock from the 1st one. This does not deadlock with
2463 * other synchronous requests, however keeping some locks and trying to obtain
2464 * others may take a considerable amount of time in a case of ost failure; and
2465 * when other sync requests do not get released lock from a client, the client
2466 * is excluded from the cluster -- such scenarious make the life difficult, so
2467 * release locks just after they are obtained. */
2468 int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2469 __u64 *flags, ldlm_policy_data_t *policy,
2470 struct ost_lvb *lvb, int kms_valid,
2471 obd_enqueue_update_f upcall, void *cookie,
2472 struct ldlm_enqueue_info *einfo,
2473 struct lustre_handle *lockh,
2474 struct ptlrpc_request_set *rqset, int async, int agl)
2476 struct obd_device *obd = exp->exp_obd;
2477 struct ptlrpc_request *req = NULL;
2478 int intent = *flags & LDLM_FL_HAS_INTENT;
2479 int match_lvb = (agl != 0 ? 0 : LDLM_FL_LVB_READY);
2484 /* Filesystem lock extents are extended to page boundaries so that
2485 * dealing with the page cache is a little smoother. */
2486 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2487 policy->l_extent.end |= ~CFS_PAGE_MASK;
2490 * kms is not valid when either object is completely fresh (so that no
2491 * locks are cached), or object was evicted. In the latter case cached
2492 * lock cannot be used, because it would prime inode state with
2493 * potentially stale LVB.
2498 /* Next, search for already existing extent locks that will cover us */
2499 /* If we're trying to read, we also search for an existing PW lock. The
2500 * VFS and page cache already protect us locally, so lots of readers/
2501 * writers can share a single PW lock.
2503 * There are problems with conversion deadlocks, so instead of
2504 * converting a read lock to a write lock, we'll just enqueue a new
2507 * At some point we should cancel the read lock instead of making them
2508 * send us a blocking callback, but there are problems with canceling
2509 * locks out from other users right now, too. */
2510 mode = einfo->ei_mode;
2511 if (einfo->ei_mode == LCK_PR)
2513 mode = ldlm_lock_match(obd->obd_namespace, *flags | match_lvb, res_id,
2514 einfo->ei_type, policy, mode, lockh, 0);
2516 struct ldlm_lock *matched = ldlm_handle2lock(lockh);
2518 if ((agl != 0) && !(matched->l_flags & LDLM_FL_LVB_READY)) {
2519 /* For AGL, if enqueue RPC is sent but the lock is not
2520 * granted, then skip to process this strpe.
2521 * Return -ECANCELED to tell the caller. */
2522 ldlm_lock_decref(lockh, mode);
2523 LDLM_LOCK_PUT(matched);
2525 } else if (osc_set_lock_data_with_check(matched, einfo)) {
2526 *flags |= LDLM_FL_LVB_READY;
2527 /* addref the lock only if not async requests and PW
2528 * lock is matched whereas we asked for PR. */
2529 if (!rqset && einfo->ei_mode != mode)
2530 ldlm_lock_addref(lockh, LCK_PR);
2532 /* I would like to be able to ASSERT here that
2533 * rss <= kms, but I can't, for reasons which
2534 * are explained in lov_enqueue() */
2537 /* We already have a lock, and it's referenced.
2539 * At this point, the cl_lock::cll_state is CLS_QUEUING,
2540 * AGL upcall may change it to CLS_HELD directly. */
2541 (*upcall)(cookie, ELDLM_OK);
2543 if (einfo->ei_mode != mode)
2544 ldlm_lock_decref(lockh, LCK_PW);
2546 /* For async requests, decref the lock. */
2547 ldlm_lock_decref(lockh, einfo->ei_mode);
2548 LDLM_LOCK_PUT(matched);
2551 ldlm_lock_decref(lockh, mode);
2552 LDLM_LOCK_PUT(matched);
2558 CFS_LIST_HEAD(cancels);
2559 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2560 &RQF_LDLM_ENQUEUE_LVB);
2564 rc = ldlm_prep_enqueue_req(exp, req, &cancels, 0);
2566 ptlrpc_request_free(req);
2570 req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
2572 ptlrpc_request_set_replen(req);
2575 /* users of osc_enqueue() can pass this flag for ldlm_lock_match() */
2576 *flags &= ~LDLM_FL_BLOCK_GRANTED;
2578 rc = ldlm_cli_enqueue(exp, &req, einfo, res_id, policy, flags, lvb,
2579 sizeof(*lvb), LVB_T_OST, lockh, async);
2582 struct osc_enqueue_args *aa;
2583 CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
2584 aa = ptlrpc_req_async_args(req);
2587 aa->oa_flags = flags;
2588 aa->oa_upcall = upcall;
2589 aa->oa_cookie = cookie;
2591 aa->oa_lockh = lockh;
2594 req->rq_interpret_reply =
2595 (ptlrpc_interpterer_t)osc_enqueue_interpret;
2596 if (rqset == PTLRPCD_SET)
2597 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
2599 ptlrpc_set_add_req(rqset, req);
2600 } else if (intent) {
2601 ptlrpc_req_finished(req);
2606 rc = osc_enqueue_fini(req, lvb, upcall, cookie, flags, agl, rc);
2608 ptlrpc_req_finished(req);
2613 static int osc_enqueue(struct obd_export *exp, struct obd_info *oinfo,
2614 struct ldlm_enqueue_info *einfo,
2615 struct ptlrpc_request_set *rqset)
2617 struct ldlm_res_id res_id;
2621 osc_build_res_name(oinfo->oi_md->lsm_object_id,
2622 oinfo->oi_md->lsm_object_seq, &res_id);
2624 rc = osc_enqueue_base(exp, &res_id, &oinfo->oi_flags, &oinfo->oi_policy,
2625 &oinfo->oi_md->lsm_oinfo[0]->loi_lvb,
2626 oinfo->oi_md->lsm_oinfo[0]->loi_kms_valid,
2627 oinfo->oi_cb_up, oinfo, einfo, oinfo->oi_lockh,
2628 rqset, rqset != NULL, 0);
2632 int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2633 __u32 type, ldlm_policy_data_t *policy, __u32 mode,
2634 int *flags, void *data, struct lustre_handle *lockh,
2637 struct obd_device *obd = exp->exp_obd;
2638 int lflags = *flags;
2642 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_MATCH))
2645 /* Filesystem lock extents are extended to page boundaries so that
2646 * dealing with the page cache is a little smoother */
2647 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2648 policy->l_extent.end |= ~CFS_PAGE_MASK;
2650 /* Next, search for already existing extent locks that will cover us */
2651 /* If we're trying to read, we also search for an existing PW lock. The
2652 * VFS and page cache already protect us locally, so lots of readers/
2653 * writers can share a single PW lock. */
2657 rc = ldlm_lock_match(obd->obd_namespace, lflags,
2658 res_id, type, policy, rc, lockh, unref);
2661 if (!osc_set_data_with_check(lockh, data)) {
2662 if (!(lflags & LDLM_FL_TEST_LOCK))
2663 ldlm_lock_decref(lockh, rc);
2667 if (!(lflags & LDLM_FL_TEST_LOCK) && mode != rc) {
2668 ldlm_lock_addref(lockh, LCK_PR);
2669 ldlm_lock_decref(lockh, LCK_PW);
2676 int osc_cancel_base(struct lustre_handle *lockh, __u32 mode)
2680 if (unlikely(mode == LCK_GROUP))
2681 ldlm_lock_decref_and_cancel(lockh, mode);
2683 ldlm_lock_decref(lockh, mode);
2688 static int osc_cancel(struct obd_export *exp, struct lov_stripe_md *md,
2689 __u32 mode, struct lustre_handle *lockh)
2692 RETURN(osc_cancel_base(lockh, mode));
2695 static int osc_cancel_unused(struct obd_export *exp,
2696 struct lov_stripe_md *lsm,
2697 ldlm_cancel_flags_t flags,
2700 struct obd_device *obd = class_exp2obd(exp);
2701 struct ldlm_res_id res_id, *resp = NULL;
2704 resp = osc_build_res_name(lsm->lsm_object_id,
2705 lsm->lsm_object_seq, &res_id);
2708 return ldlm_cli_cancel_unused(obd->obd_namespace, resp, flags, opaque);
2711 static int osc_statfs_interpret(const struct lu_env *env,
2712 struct ptlrpc_request *req,
2713 struct osc_async_args *aa, int rc)
2715 struct obd_statfs *msfs;
2719 /* The request has in fact never been sent
2720 * due to issues at a higher level (LOV).
2721 * Exit immediately since the caller is
2722 * aware of the problem and takes care
2723 * of the clean up */
2726 if ((rc == -ENOTCONN || rc == -EAGAIN) &&
2727 (aa->aa_oi->oi_flags & OBD_STATFS_NODELAY))
2733 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2735 GOTO(out, rc = -EPROTO);
2738 *aa->aa_oi->oi_osfs = *msfs;
2740 rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
2744 static int osc_statfs_async(struct obd_export *exp,
2745 struct obd_info *oinfo, __u64 max_age,
2746 struct ptlrpc_request_set *rqset)
2748 struct obd_device *obd = class_exp2obd(exp);
2749 struct ptlrpc_request *req;
2750 struct osc_async_args *aa;
2754 /* We could possibly pass max_age in the request (as an absolute
2755 * timestamp or a "seconds.usec ago") so the target can avoid doing
2756 * extra calls into the filesystem if that isn't necessary (e.g.
2757 * during mount that would help a bit). Having relative timestamps
2758 * is not so great if request processing is slow, while absolute
2759 * timestamps are not ideal because they need time synchronization. */
2760 req = ptlrpc_request_alloc(obd->u.cli.cl_import, &RQF_OST_STATFS);
2764 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2766 ptlrpc_request_free(req);
2769 ptlrpc_request_set_replen(req);
2770 req->rq_request_portal = OST_CREATE_PORTAL;
2771 ptlrpc_at_set_req_timeout(req);
2773 if (oinfo->oi_flags & OBD_STATFS_NODELAY) {
2774 /* procfs requests not want stat in wait for avoid deadlock */
2775 req->rq_no_resend = 1;
2776 req->rq_no_delay = 1;
2779 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_statfs_interpret;
2780 CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
2781 aa = ptlrpc_req_async_args(req);
2784 ptlrpc_set_add_req(rqset, req);
2788 static int osc_statfs(const struct lu_env *env, struct obd_export *exp,
2789 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
2791 struct obd_device *obd = class_exp2obd(exp);
2792 struct obd_statfs *msfs;
2793 struct ptlrpc_request *req;
2794 struct obd_import *imp = NULL;
2798 /*Since the request might also come from lprocfs, so we need
2799 *sync this with client_disconnect_export Bug15684*/
2800 down_read(&obd->u.cli.cl_sem);
2801 if (obd->u.cli.cl_import)
2802 imp = class_import_get(obd->u.cli.cl_import);
2803 up_read(&obd->u.cli.cl_sem);
2807 /* We could possibly pass max_age in the request (as an absolute
2808 * timestamp or a "seconds.usec ago") so the target can avoid doing
2809 * extra calls into the filesystem if that isn't necessary (e.g.
2810 * during mount that would help a bit). Having relative timestamps
2811 * is not so great if request processing is slow, while absolute
2812 * timestamps are not ideal because they need time synchronization. */
2813 req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
2815 class_import_put(imp);
2820 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2822 ptlrpc_request_free(req);
2825 ptlrpc_request_set_replen(req);
2826 req->rq_request_portal = OST_CREATE_PORTAL;
2827 ptlrpc_at_set_req_timeout(req);
2829 if (flags & OBD_STATFS_NODELAY) {
2830 /* procfs requests not want stat in wait for avoid deadlock */
2831 req->rq_no_resend = 1;
2832 req->rq_no_delay = 1;
2835 rc = ptlrpc_queue_wait(req);
2839 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2841 GOTO(out, rc = -EPROTO);
2848 ptlrpc_req_finished(req);
2852 /* Retrieve object striping information.
2854 * @lmmu is a pointer to an in-core struct with lmm_ost_count indicating
2855 * the maximum number of OST indices which will fit in the user buffer.
2856 * lmm_magic must be LOV_MAGIC (we only use 1 slot here).
2858 static int osc_getstripe(struct lov_stripe_md *lsm, struct lov_user_md *lump)
2860 /* we use lov_user_md_v3 because it is larger than lov_user_md_v1 */
2861 struct lov_user_md_v3 lum, *lumk;
2862 struct lov_user_ost_data_v1 *lmm_objects;
2863 int rc = 0, lum_size;
2869 /* we only need the header part from user space to get lmm_magic and
2870 * lmm_stripe_count, (the header part is common to v1 and v3) */
2871 lum_size = sizeof(struct lov_user_md_v1);
2872 if (cfs_copy_from_user(&lum, lump, lum_size))
2875 if ((lum.lmm_magic != LOV_USER_MAGIC_V1) &&
2876 (lum.lmm_magic != LOV_USER_MAGIC_V3))
2879 /* lov_user_md_vX and lov_mds_md_vX must have the same size */
2880 LASSERT(sizeof(struct lov_user_md_v1) == sizeof(struct lov_mds_md_v1));
2881 LASSERT(sizeof(struct lov_user_md_v3) == sizeof(struct lov_mds_md_v3));
2882 LASSERT(sizeof(lum.lmm_objects[0]) == sizeof(lumk->lmm_objects[0]));
2884 /* we can use lov_mds_md_size() to compute lum_size
2885 * because lov_user_md_vX and lov_mds_md_vX have the same size */
2886 if (lum.lmm_stripe_count > 0) {
2887 lum_size = lov_mds_md_size(lum.lmm_stripe_count, lum.lmm_magic);
2888 OBD_ALLOC(lumk, lum_size);
2892 if (lum.lmm_magic == LOV_USER_MAGIC_V1)
2893 lmm_objects = &(((struct lov_user_md_v1 *)lumk)->lmm_objects[0]);
2895 lmm_objects = &(lumk->lmm_objects[0]);
2896 lmm_objects->l_object_id = lsm->lsm_object_id;
2898 lum_size = lov_mds_md_size(0, lum.lmm_magic);
2902 lumk->lmm_object_id = lsm->lsm_object_id;
2903 lumk->lmm_object_seq = lsm->lsm_object_seq;
2904 lumk->lmm_stripe_count = 1;
2906 if (cfs_copy_to_user(lump, lumk, lum_size))
2910 OBD_FREE(lumk, lum_size);
2916 static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2917 void *karg, void *uarg)
2919 struct obd_device *obd = exp->exp_obd;
2920 struct obd_ioctl_data *data = karg;
2924 if (!cfs_try_module_get(THIS_MODULE)) {
2925 CERROR("Can't get module. Is it alive?");
2929 case OBD_IOC_LOV_GET_CONFIG: {
2931 struct lov_desc *desc;
2932 struct obd_uuid uuid;
2936 if (obd_ioctl_getdata(&buf, &len, (void *)uarg))
2937 GOTO(out, err = -EINVAL);
2939 data = (struct obd_ioctl_data *)buf;
2941 if (sizeof(*desc) > data->ioc_inllen1) {
2942 obd_ioctl_freedata(buf, len);
2943 GOTO(out, err = -EINVAL);
2946 if (data->ioc_inllen2 < sizeof(uuid)) {
2947 obd_ioctl_freedata(buf, len);
2948 GOTO(out, err = -EINVAL);
2951 desc = (struct lov_desc *)data->ioc_inlbuf1;
2952 desc->ld_tgt_count = 1;
2953 desc->ld_active_tgt_count = 1;
2954 desc->ld_default_stripe_count = 1;
2955 desc->ld_default_stripe_size = 0;
2956 desc->ld_default_stripe_offset = 0;
2957 desc->ld_pattern = 0;
2958 memcpy(&desc->ld_uuid, &obd->obd_uuid, sizeof(uuid));
2960 memcpy(data->ioc_inlbuf2, &obd->obd_uuid, sizeof(uuid));
2962 err = cfs_copy_to_user((void *)uarg, buf, len);
2965 obd_ioctl_freedata(buf, len);
2968 case LL_IOC_LOV_SETSTRIPE:
2969 err = obd_alloc_memmd(exp, karg);
2973 case LL_IOC_LOV_GETSTRIPE:
2974 err = osc_getstripe(karg, uarg);
2976 case OBD_IOC_CLIENT_RECOVER:
2977 err = ptlrpc_recover_import(obd->u.cli.cl_import,
2978 data->ioc_inlbuf1, 0);
2982 case IOC_OSC_SET_ACTIVE:
2983 err = ptlrpc_set_import_active(obd->u.cli.cl_import,
2986 case OBD_IOC_POLL_QUOTACHECK:
2987 err = osc_quota_poll_check(exp, (struct if_quotacheck *)karg);
2989 case OBD_IOC_PING_TARGET:
2990 err = ptlrpc_obd_ping(obd);
2993 CDEBUG(D_INODE, "unrecognised ioctl %#x by %s\n",
2994 cmd, cfs_curproc_comm());
2995 GOTO(out, err = -ENOTTY);
2998 cfs_module_put(THIS_MODULE);
3002 static int osc_get_info(const struct lu_env *env, struct obd_export *exp,
3003 obd_count keylen, void *key, __u32 *vallen, void *val,
3004 struct lov_stripe_md *lsm)
3007 if (!vallen || !val)
3010 if (KEY_IS(KEY_LOCK_TO_STRIPE)) {
3011 __u32 *stripe = val;
3012 *vallen = sizeof(*stripe);
3015 } else if (KEY_IS(KEY_LAST_ID)) {
3016 struct ptlrpc_request *req;
3021 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
3022 &RQF_OST_GET_INFO_LAST_ID);
3026 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
3027 RCL_CLIENT, keylen);
3028 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
3030 ptlrpc_request_free(req);
3034 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
3035 memcpy(tmp, key, keylen);
3037 req->rq_no_delay = req->rq_no_resend = 1;
3038 ptlrpc_request_set_replen(req);
3039 rc = ptlrpc_queue_wait(req);
3043 reply = req_capsule_server_get(&req->rq_pill, &RMF_OBD_ID);
3045 GOTO(out, rc = -EPROTO);
3047 *((obd_id *)val) = *reply;
3049 ptlrpc_req_finished(req);
3051 } else if (KEY_IS(KEY_FIEMAP)) {
3052 struct ptlrpc_request *req;
3053 struct ll_user_fiemap *reply;
3057 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
3058 &RQF_OST_GET_INFO_FIEMAP);
3062 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_KEY,
3063 RCL_CLIENT, keylen);
3064 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
3065 RCL_CLIENT, *vallen);
3066 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
3067 RCL_SERVER, *vallen);
3069 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
3071 ptlrpc_request_free(req);
3075 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_KEY);
3076 memcpy(tmp, key, keylen);
3077 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_VAL);
3078 memcpy(tmp, val, *vallen);
3080 ptlrpc_request_set_replen(req);
3081 rc = ptlrpc_queue_wait(req);
3085 reply = req_capsule_server_get(&req->rq_pill, &RMF_FIEMAP_VAL);
3087 GOTO(out1, rc = -EPROTO);
3089 memcpy(val, reply, *vallen);
3091 ptlrpc_req_finished(req);
3099 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
3100 obd_count keylen, void *key, obd_count vallen,
3101 void *val, struct ptlrpc_request_set *set)
3103 struct ptlrpc_request *req;
3104 struct obd_device *obd = exp->exp_obd;
3105 struct obd_import *imp = class_exp2cliimp(exp);
3110 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_SHUTDOWN, 10);
3112 if (KEY_IS(KEY_CHECKSUM)) {
3113 if (vallen != sizeof(int))
3115 exp->exp_obd->u.cli.cl_checksum = (*(int *)val) ? 1 : 0;
3119 if (KEY_IS(KEY_SPTLRPC_CONF)) {
3120 sptlrpc_conf_client_adapt(obd);
3124 if (KEY_IS(KEY_FLUSH_CTX)) {
3125 sptlrpc_import_flush_my_ctx(imp);
3129 if (KEY_IS(KEY_CACHE_SET)) {
3130 struct client_obd *cli = &obd->u.cli;
3132 LASSERT(cli->cl_cache == NULL); /* only once */
3133 cli->cl_cache = (struct cl_client_cache *)val;
3134 cfs_atomic_inc(&cli->cl_cache->ccc_users);
3135 cli->cl_lru_left = &cli->cl_cache->ccc_lru_left;
3137 /* add this osc into entity list */
3138 LASSERT(cfs_list_empty(&cli->cl_lru_osc));
3139 spin_lock(&cli->cl_cache->ccc_lru_lock);
3140 cfs_list_add(&cli->cl_lru_osc, &cli->cl_cache->ccc_lru);
3141 spin_unlock(&cli->cl_cache->ccc_lru_lock);
3146 if (KEY_IS(KEY_CACHE_LRU_SHRINK)) {
3147 struct client_obd *cli = &obd->u.cli;
3148 int nr = cfs_atomic_read(&cli->cl_lru_in_list) >> 1;
3149 int target = *(int *)val;
3151 nr = osc_lru_shrink(cli, min(nr, target));
3156 if (!set && !KEY_IS(KEY_GRANT_SHRINK))
3159 /* We pass all other commands directly to OST. Since nobody calls osc
3160 methods directly and everybody is supposed to go through LOV, we
3161 assume lov checked invalid values for us.
3162 The only recognised values so far are evict_by_nid and mds_conn.
3163 Even if something bad goes through, we'd get a -EINVAL from OST
3166 req = ptlrpc_request_alloc(imp, KEY_IS(KEY_GRANT_SHRINK) ?
3167 &RQF_OST_SET_GRANT_INFO :
3172 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
3173 RCL_CLIENT, keylen);
3174 if (!KEY_IS(KEY_GRANT_SHRINK))
3175 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
3176 RCL_CLIENT, vallen);
3177 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SET_INFO);
3179 ptlrpc_request_free(req);
3183 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
3184 memcpy(tmp, key, keylen);
3185 tmp = req_capsule_client_get(&req->rq_pill, KEY_IS(KEY_GRANT_SHRINK) ?
3188 memcpy(tmp, val, vallen);
3190 if (KEY_IS(KEY_GRANT_SHRINK)) {
3191 struct osc_grant_args *aa;
3194 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
3195 aa = ptlrpc_req_async_args(req);
3198 ptlrpc_req_finished(req);
3201 *oa = ((struct ost_body *)val)->oa;
3203 req->rq_interpret_reply = osc_shrink_grant_interpret;
3206 ptlrpc_request_set_replen(req);
3207 if (!KEY_IS(KEY_GRANT_SHRINK)) {
3208 LASSERT(set != NULL);
3209 ptlrpc_set_add_req(set, req);
3210 ptlrpc_check_set(NULL, set);
3212 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
3218 static int osc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
3219 struct obd_device *disk_obd, int *index)
3221 /* this code is not supposed to be used with LOD/OSP
3222 * to be removed soon */
3227 static int osc_llog_finish(struct obd_device *obd, int count)
3229 struct llog_ctxt *ctxt;
3233 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
3235 llog_cat_close(NULL, ctxt->loc_handle);
3236 llog_cleanup(NULL, ctxt);
3239 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
3241 llog_cleanup(NULL, ctxt);
3245 static int osc_reconnect(const struct lu_env *env,
3246 struct obd_export *exp, struct obd_device *obd,
3247 struct obd_uuid *cluuid,
3248 struct obd_connect_data *data,
3251 struct client_obd *cli = &obd->u.cli;
3253 if (data != NULL && (data->ocd_connect_flags & OBD_CONNECT_GRANT)) {
3256 client_obd_list_lock(&cli->cl_loi_list_lock);
3257 data->ocd_grant = (cli->cl_avail_grant + cli->cl_dirty) ?:
3258 2 * cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT;
3259 lost_grant = cli->cl_lost_grant;
3260 cli->cl_lost_grant = 0;
3261 client_obd_list_unlock(&cli->cl_loi_list_lock);
3263 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d"
3264 " ocd_grant: %d, lost: %ld.\n", data->ocd_connect_flags,
3265 data->ocd_version, data->ocd_grant, lost_grant);
3271 static int osc_disconnect(struct obd_export *exp)
3273 struct obd_device *obd = class_exp2obd(exp);
3274 struct llog_ctxt *ctxt;
3277 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
3279 if (obd->u.cli.cl_conn_count == 1) {
3280 /* Flush any remaining cancel messages out to the
3282 llog_sync(ctxt, exp, 0);
3284 llog_ctxt_put(ctxt);
3286 CDEBUG(D_HA, "No LLOG_SIZE_REPL_CTXT found in obd %p\n",
3290 rc = client_disconnect_export(exp);
3292 * Initially we put del_shrink_grant before disconnect_export, but it
3293 * causes the following problem if setup (connect) and cleanup
3294 * (disconnect) are tangled together.
3295 * connect p1 disconnect p2
3296 * ptlrpc_connect_import
3297 * ............... class_manual_cleanup
3300 * ptlrpc_connect_interrupt
3302 * add this client to shrink list
3304 * Bang! pinger trigger the shrink.
3305 * So the osc should be disconnected from the shrink list, after we
3306 * are sure the import has been destroyed. BUG18662
3308 if (obd->u.cli.cl_import == NULL)
3309 osc_del_shrink_grant(&obd->u.cli);
3313 static int osc_import_event(struct obd_device *obd,
3314 struct obd_import *imp,
3315 enum obd_import_event event)
3317 struct client_obd *cli;
3321 LASSERT(imp->imp_obd == obd);
3324 case IMP_EVENT_DISCON: {
3326 client_obd_list_lock(&cli->cl_loi_list_lock);
3327 cli->cl_avail_grant = 0;
3328 cli->cl_lost_grant = 0;
3329 client_obd_list_unlock(&cli->cl_loi_list_lock);
3332 case IMP_EVENT_INACTIVE: {
3333 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
3336 case IMP_EVENT_INVALIDATE: {
3337 struct ldlm_namespace *ns = obd->obd_namespace;
3341 env = cl_env_get(&refcheck);
3345 /* all pages go to failing rpcs due to the invalid
3347 osc_io_unplug(env, cli, NULL, PDL_POLICY_ROUND);
3349 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
3350 cl_env_put(env, &refcheck);
3355 case IMP_EVENT_ACTIVE: {
3356 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
3359 case IMP_EVENT_OCD: {
3360 struct obd_connect_data *ocd = &imp->imp_connect_data;
3362 if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT)
3363 osc_init_grant(&obd->u.cli, ocd);
3366 if (ocd->ocd_connect_flags & OBD_CONNECT_REQPORTAL)
3367 imp->imp_client->cli_request_portal =OST_REQUEST_PORTAL;
3369 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
3372 case IMP_EVENT_DEACTIVATE: {
3373 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DEACTIVATE, NULL);
3376 case IMP_EVENT_ACTIVATE: {
3377 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVATE, NULL);
3381 CERROR("Unknown import event %d\n", event);
3388 * Determine whether the lock can be canceled before replaying the lock
3389 * during recovery, see bug16774 for detailed information.
3391 * \retval zero the lock can't be canceled
3392 * \retval other ok to cancel
3394 static int osc_cancel_for_recovery(struct ldlm_lock *lock)
3396 check_res_locked(lock->l_resource);
3399 * Cancel all unused extent lock in granted mode LCK_PR or LCK_CR.
3401 * XXX as a future improvement, we can also cancel unused write lock
3402 * if it doesn't have dirty data and active mmaps.
3404 if (lock->l_resource->lr_type == LDLM_EXTENT &&
3405 (lock->l_granted_mode == LCK_PR ||
3406 lock->l_granted_mode == LCK_CR) &&
3407 (osc_dlm_lock_pageref(lock) == 0))
3413 static int brw_queue_work(const struct lu_env *env, void *data)
3415 struct client_obd *cli = data;
3417 CDEBUG(D_CACHE, "Run writeback work for client obd %p.\n", cli);
3419 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
3423 int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
3425 struct lprocfs_static_vars lvars = { 0 };
3426 struct client_obd *cli = &obd->u.cli;
3431 rc = ptlrpcd_addref();
3435 rc = client_obd_setup(obd, lcfg);
3437 GOTO(out_ptlrpcd, rc);
3439 handler = ptlrpcd_alloc_work(cli->cl_import, brw_queue_work, cli);
3440 if (IS_ERR(handler))
3441 GOTO(out_client_setup, rc = PTR_ERR(handler));
3442 cli->cl_writeback_work = handler;
3444 rc = osc_quota_setup(obd);
3446 GOTO(out_ptlrpcd_work, rc);
3448 cli->cl_grant_shrink_interval = GRANT_SHRINK_INTERVAL;
3449 lprocfs_osc_init_vars(&lvars);
3450 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0) {
3451 lproc_osc_attach_seqstat(obd);
3452 sptlrpc_lprocfs_cliobd_attach(obd);
3453 ptlrpc_lprocfs_register_obd(obd);
3456 /* We need to allocate a few requests more, because
3457 * brw_interpret tries to create new requests before freeing
3458 * previous ones, Ideally we want to have 2x max_rpcs_in_flight
3459 * reserved, but I'm afraid that might be too much wasted RAM
3460 * in fact, so 2 is just my guess and still should work. */
3461 cli->cl_import->imp_rq_pool =
3462 ptlrpc_init_rq_pool(cli->cl_max_rpcs_in_flight + 2,
3464 ptlrpc_add_rqs_to_pool);
3466 CFS_INIT_LIST_HEAD(&cli->cl_grant_shrink_list);
3467 ns_register_cancel(obd->obd_namespace, osc_cancel_for_recovery);
3471 ptlrpcd_destroy_work(handler);
3473 client_obd_cleanup(obd);
3479 static int osc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
3485 case OBD_CLEANUP_EARLY: {
3486 struct obd_import *imp;
3487 imp = obd->u.cli.cl_import;
3488 CDEBUG(D_HA, "Deactivating import %s\n", obd->obd_name);
3489 /* ptlrpc_abort_inflight to stop an mds_lov_synchronize */
3490 ptlrpc_deactivate_import(imp);
3491 spin_lock(&imp->imp_lock);
3492 imp->imp_pingable = 0;
3493 spin_unlock(&imp->imp_lock);
3496 case OBD_CLEANUP_EXPORTS: {
3497 struct client_obd *cli = &obd->u.cli;
3499 * for echo client, export may be on zombie list, wait for
3500 * zombie thread to cull it, because cli.cl_import will be
3501 * cleared in client_disconnect_export():
3502 * class_export_destroy() -> obd_cleanup() ->
3503 * echo_device_free() -> echo_client_cleanup() ->
3504 * obd_disconnect() -> osc_disconnect() ->
3505 * client_disconnect_export()
3507 obd_zombie_barrier();
3508 if (cli->cl_writeback_work) {
3509 ptlrpcd_destroy_work(cli->cl_writeback_work);
3510 cli->cl_writeback_work = NULL;
3512 obd_cleanup_client_import(obd);
3513 ptlrpc_lprocfs_unregister_obd(obd);
3514 lprocfs_obd_cleanup(obd);
3515 rc = obd_llog_finish(obd, 0);
3517 CERROR("failed to cleanup llogging subsystems\n");
3524 int osc_cleanup(struct obd_device *obd)
3526 struct client_obd *cli = &obd->u.cli;
3532 if (cli->cl_cache != NULL) {
3533 LASSERT(cfs_atomic_read(&cli->cl_cache->ccc_users) > 0);
3534 spin_lock(&cli->cl_cache->ccc_lru_lock);
3535 cfs_list_del_init(&cli->cl_lru_osc);
3536 spin_unlock(&cli->cl_cache->ccc_lru_lock);
3537 cli->cl_lru_left = NULL;
3538 cfs_atomic_dec(&cli->cl_cache->ccc_users);
3539 cli->cl_cache = NULL;
3542 /* free memory of osc quota cache */
3543 osc_quota_cleanup(obd);
3545 rc = client_obd_cleanup(obd);
3551 int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg)
3553 struct lprocfs_static_vars lvars = { 0 };
3556 lprocfs_osc_init_vars(&lvars);
3558 switch (lcfg->lcfg_command) {
3560 rc = class_process_proc_param(PARAM_OSC, lvars.obd_vars,
3570 static int osc_process_config(struct obd_device *obd, obd_count len, void *buf)
3572 return osc_process_config_base(obd, buf);
3575 struct obd_ops osc_obd_ops = {
3576 .o_owner = THIS_MODULE,
3577 .o_setup = osc_setup,
3578 .o_precleanup = osc_precleanup,
3579 .o_cleanup = osc_cleanup,
3580 .o_add_conn = client_import_add_conn,
3581 .o_del_conn = client_import_del_conn,
3582 .o_connect = client_connect_import,
3583 .o_reconnect = osc_reconnect,
3584 .o_disconnect = osc_disconnect,
3585 .o_statfs = osc_statfs,
3586 .o_statfs_async = osc_statfs_async,
3587 .o_packmd = osc_packmd,
3588 .o_unpackmd = osc_unpackmd,
3589 .o_create = osc_create,
3590 .o_destroy = osc_destroy,
3591 .o_getattr = osc_getattr,
3592 .o_getattr_async = osc_getattr_async,
3593 .o_setattr = osc_setattr,
3594 .o_setattr_async = osc_setattr_async,
3596 .o_punch = osc_punch,
3598 .o_enqueue = osc_enqueue,
3599 .o_change_cbdata = osc_change_cbdata,
3600 .o_find_cbdata = osc_find_cbdata,
3601 .o_cancel = osc_cancel,
3602 .o_cancel_unused = osc_cancel_unused,
3603 .o_iocontrol = osc_iocontrol,
3604 .o_get_info = osc_get_info,
3605 .o_set_info_async = osc_set_info_async,
3606 .o_import_event = osc_import_event,
3607 .o_llog_init = osc_llog_init,
3608 .o_llog_finish = osc_llog_finish,
3609 .o_process_config = osc_process_config,
3610 .o_quotactl = osc_quotactl,
3611 .o_quotacheck = osc_quotacheck,
3614 extern struct lu_kmem_descr osc_caches[];
3615 extern spinlock_t osc_ast_guard;
3616 extern struct lock_class_key osc_ast_guard_class;
3618 int __init osc_init(void)
3620 struct lprocfs_static_vars lvars = { 0 };
3624 /* print an address of _any_ initialized kernel symbol from this
3625 * module, to allow debugging with gdb that doesn't support data
3626 * symbols from modules.*/
3627 CDEBUG(D_INFO, "Lustre OSC module (%p).\n", &osc_caches);
3629 rc = lu_kmem_init(osc_caches);
3631 lprocfs_osc_init_vars(&lvars);
3633 rc = class_register_type(&osc_obd_ops, NULL, lvars.module_vars,
3634 LUSTRE_OSC_NAME, &osc_device_type);
3636 lu_kmem_fini(osc_caches);
3640 spin_lock_init(&osc_ast_guard);
3641 lockdep_set_class(&osc_ast_guard, &osc_ast_guard_class);
3647 static void /*__exit*/ osc_exit(void)
3649 class_unregister_type(LUSTRE_OSC_NAME);
3650 lu_kmem_fini(osc_caches);
3653 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3654 MODULE_DESCRIPTION("Lustre Object Storage Client (OSC)");
3655 MODULE_LICENSE("GPL");
3657 cfs_module(osc, LUSTRE_VERSION_STRING, osc_init, osc_exit);
git://git.whamcloud.com / fs / lustre-release.git / blob