4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #define DEBUG_SUBSYSTEM S_OSC
39 #include <libcfs/libcfs.h>
42 # include <liblustre.h>
45 #include <lustre_dlm.h>
46 #include <lustre_net.h>
47 #include <lustre/lustre_user.h>
48 #include <obd_cksum.h>
56 #include <lustre_ha.h>
57 #include <lprocfs_status.h>
58 #include <lustre_log.h>
59 #include <lustre_debug.h>
60 #include <lustre_param.h>
61 #include <lustre_fid.h>
62 #include "osc_internal.h"
63 #include "osc_cl_internal.h"
65 static void osc_release_ppga(struct brw_page **ppga, obd_count count);
66 static int brw_interpret(const struct lu_env *env,
67 struct ptlrpc_request *req, void *data, int rc);
68 int osc_cleanup(struct obd_device *obd);
70 /* Pack OSC object metadata for disk storage (LE byte order). */
71 static int osc_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
72 struct lov_stripe_md *lsm)
77 lmm_size = sizeof(**lmmp);
81 if (*lmmp != NULL && lsm == NULL) {
82 OBD_FREE(*lmmp, lmm_size);
85 } else if (unlikely(lsm != NULL && lsm->lsm_object_id == 0)) {
90 OBD_ALLOC(*lmmp, lmm_size);
96 (*lmmp)->lmm_object_id = cpu_to_le64(lsm->lsm_object_id);
97 (*lmmp)->lmm_object_seq = cpu_to_le64(lsm->lsm_object_seq);
103 /* Unpack OSC object metadata from disk storage (LE byte order). */
104 static int osc_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
105 struct lov_mds_md *lmm, int lmm_bytes)
108 struct obd_import *imp = class_exp2cliimp(exp);
112 if (lmm_bytes < sizeof(*lmm)) {
113 CERROR("%s: lov_mds_md too small: %d, need %d\n",
114 exp->exp_obd->obd_name, lmm_bytes,
118 /* XXX LOV_MAGIC etc check? */
120 if (unlikely(lmm->lmm_object_id == 0)) {
121 CERROR("%s: zero lmm_object_id\n",
122 exp->exp_obd->obd_name);
127 lsm_size = lov_stripe_md_size(1);
131 if (*lsmp != NULL && lmm == NULL) {
132 OBD_FREE((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
133 OBD_FREE(*lsmp, lsm_size);
139 OBD_ALLOC(*lsmp, lsm_size);
140 if (unlikely(*lsmp == NULL))
142 OBD_ALLOC((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
143 if (unlikely((*lsmp)->lsm_oinfo[0] == NULL)) {
144 OBD_FREE(*lsmp, lsm_size);
147 loi_init((*lsmp)->lsm_oinfo[0]);
148 } else if (unlikely((*lsmp)->lsm_object_id == 0)) {
153 /* XXX zero *lsmp? */
154 (*lsmp)->lsm_object_id = le64_to_cpu(lmm->lmm_object_id);
155 (*lsmp)->lsm_object_seq = le64_to_cpu(lmm->lmm_object_seq);
159 (imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_MAXBYTES))
160 (*lsmp)->lsm_maxbytes = imp->imp_connect_data.ocd_maxbytes;
162 (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES;
167 static inline void osc_pack_capa(struct ptlrpc_request *req,
168 struct ost_body *body, void *capa)
170 struct obd_capa *oc = (struct obd_capa *)capa;
171 struct lustre_capa *c;
176 c = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1);
179 body->oa.o_valid |= OBD_MD_FLOSSCAPA;
180 DEBUG_CAPA(D_SEC, c, "pack");
183 static inline void osc_pack_req_body(struct ptlrpc_request *req,
184 struct obd_info *oinfo)
186 struct ost_body *body;
188 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
191 lustre_set_wire_obdo(&body->oa, oinfo->oi_oa);
192 osc_pack_capa(req, body, oinfo->oi_capa);
195 static inline void osc_set_capa_size(struct ptlrpc_request *req,
196 const struct req_msg_field *field,
200 req_capsule_set_size(&req->rq_pill, field, RCL_CLIENT, 0);
202 /* it is already calculated as sizeof struct obd_capa */
206 static int osc_getattr_interpret(const struct lu_env *env,
207 struct ptlrpc_request *req,
208 struct osc_async_args *aa, int rc)
210 struct ost_body *body;
216 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
218 CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
219 lustre_get_wire_obdo(aa->aa_oi->oi_oa, &body->oa);
221 /* This should really be sent by the OST */
222 aa->aa_oi->oi_oa->o_blksize = DT_MAX_BRW_SIZE;
223 aa->aa_oi->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
225 CDEBUG(D_INFO, "can't unpack ost_body\n");
227 aa->aa_oi->oi_oa->o_valid = 0;
230 rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
234 static int osc_getattr_async(struct obd_export *exp, struct obd_info *oinfo,
235 struct ptlrpc_request_set *set)
237 struct ptlrpc_request *req;
238 struct osc_async_args *aa;
242 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
246 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
247 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
249 ptlrpc_request_free(req);
253 osc_pack_req_body(req, oinfo);
255 ptlrpc_request_set_replen(req);
256 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_getattr_interpret;
258 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
259 aa = ptlrpc_req_async_args(req);
262 ptlrpc_set_add_req(set, req);
266 static int osc_getattr(const struct lu_env *env, struct obd_export *exp,
267 struct obd_info *oinfo)
269 struct ptlrpc_request *req;
270 struct ost_body *body;
274 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
278 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
279 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
281 ptlrpc_request_free(req);
285 osc_pack_req_body(req, oinfo);
287 ptlrpc_request_set_replen(req);
289 rc = ptlrpc_queue_wait(req);
293 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
295 GOTO(out, rc = -EPROTO);
297 CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
298 lustre_get_wire_obdo(oinfo->oi_oa, &body->oa);
300 oinfo->oi_oa->o_blksize = cli_brw_size(exp->exp_obd);
301 oinfo->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
305 ptlrpc_req_finished(req);
309 static int osc_setattr(const struct lu_env *env, struct obd_export *exp,
310 struct obd_info *oinfo, struct obd_trans_info *oti)
312 struct ptlrpc_request *req;
313 struct ost_body *body;
317 LASSERT(oinfo->oi_oa->o_valid & OBD_MD_FLGROUP);
319 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR);
323 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
324 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR);
326 ptlrpc_request_free(req);
330 osc_pack_req_body(req, oinfo);
332 ptlrpc_request_set_replen(req);
334 rc = ptlrpc_queue_wait(req);
338 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
340 GOTO(out, rc = -EPROTO);
342 lustre_get_wire_obdo(oinfo->oi_oa, &body->oa);
346 ptlrpc_req_finished(req);
350 static int osc_setattr_interpret(const struct lu_env *env,
351 struct ptlrpc_request *req,
352 struct osc_setattr_args *sa, int rc)
354 struct ost_body *body;
360 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
362 GOTO(out, rc = -EPROTO);
364 lustre_get_wire_obdo(sa->sa_oa, &body->oa);
366 rc = sa->sa_upcall(sa->sa_cookie, rc);
370 int osc_setattr_async_base(struct obd_export *exp, struct obd_info *oinfo,
371 struct obd_trans_info *oti,
372 obd_enqueue_update_f upcall, void *cookie,
373 struct ptlrpc_request_set *rqset)
375 struct ptlrpc_request *req;
376 struct osc_setattr_args *sa;
380 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR);
384 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
385 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR);
387 ptlrpc_request_free(req);
391 if (oti && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
392 oinfo->oi_oa->o_lcookie = *oti->oti_logcookies;
394 osc_pack_req_body(req, oinfo);
396 ptlrpc_request_set_replen(req);
398 /* do mds to ost setattr asynchronously */
400 /* Do not wait for response. */
401 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
403 req->rq_interpret_reply =
404 (ptlrpc_interpterer_t)osc_setattr_interpret;
406 CLASSERT (sizeof(*sa) <= sizeof(req->rq_async_args));
407 sa = ptlrpc_req_async_args(req);
408 sa->sa_oa = oinfo->oi_oa;
409 sa->sa_upcall = upcall;
410 sa->sa_cookie = cookie;
412 if (rqset == PTLRPCD_SET)
413 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
415 ptlrpc_set_add_req(rqset, req);
421 static int osc_setattr_async(struct obd_export *exp, struct obd_info *oinfo,
422 struct obd_trans_info *oti,
423 struct ptlrpc_request_set *rqset)
425 return osc_setattr_async_base(exp, oinfo, oti,
426 oinfo->oi_cb_up, oinfo, rqset);
429 int osc_real_create(struct obd_export *exp, struct obdo *oa,
430 struct lov_stripe_md **ea, struct obd_trans_info *oti)
432 struct ptlrpc_request *req;
433 struct ost_body *body;
434 struct lov_stripe_md *lsm;
443 rc = obd_alloc_memmd(exp, &lsm);
448 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_CREATE);
450 GOTO(out, rc = -ENOMEM);
452 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_CREATE);
454 ptlrpc_request_free(req);
458 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
460 lustre_set_wire_obdo(&body->oa, oa);
462 ptlrpc_request_set_replen(req);
464 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
465 oa->o_flags == OBD_FL_DELORPHAN) {
467 "delorphan from OST integration");
468 /* Don't resend the delorphan req */
469 req->rq_no_resend = req->rq_no_delay = 1;
472 rc = ptlrpc_queue_wait(req);
476 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
478 GOTO(out_req, rc = -EPROTO);
480 lustre_get_wire_obdo(oa, &body->oa);
482 oa->o_blksize = cli_brw_size(exp->exp_obd);
483 oa->o_valid |= OBD_MD_FLBLKSZ;
485 /* XXX LOV STACKING: the lsm that is passed to us from LOV does not
486 * have valid lsm_oinfo data structs, so don't go touching that.
487 * This needs to be fixed in a big way.
489 lsm->lsm_object_id = oa->o_id;
490 lsm->lsm_object_seq = oa->o_seq;
494 oti->oti_transno = lustre_msg_get_transno(req->rq_repmsg);
496 if (oa->o_valid & OBD_MD_FLCOOKIE) {
497 if (!oti->oti_logcookies)
498 oti_alloc_cookies(oti, 1);
499 *oti->oti_logcookies = oa->o_lcookie;
503 CDEBUG(D_HA, "transno: "LPD64"\n",
504 lustre_msg_get_transno(req->rq_repmsg));
506 ptlrpc_req_finished(req);
509 obd_free_memmd(exp, &lsm);
513 int osc_punch_base(struct obd_export *exp, struct obd_info *oinfo,
514 obd_enqueue_update_f upcall, void *cookie,
515 struct ptlrpc_request_set *rqset)
517 struct ptlrpc_request *req;
518 struct osc_setattr_args *sa;
519 struct ost_body *body;
523 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_PUNCH);
527 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
528 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_PUNCH);
530 ptlrpc_request_free(req);
533 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
534 ptlrpc_at_set_req_timeout(req);
536 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
538 lustre_set_wire_obdo(&body->oa, oinfo->oi_oa);
539 osc_pack_capa(req, body, oinfo->oi_capa);
541 ptlrpc_request_set_replen(req);
543 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_setattr_interpret;
544 CLASSERT (sizeof(*sa) <= sizeof(req->rq_async_args));
545 sa = ptlrpc_req_async_args(req);
546 sa->sa_oa = oinfo->oi_oa;
547 sa->sa_upcall = upcall;
548 sa->sa_cookie = cookie;
549 if (rqset == PTLRPCD_SET)
550 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
552 ptlrpc_set_add_req(rqset, req);
557 static int osc_punch(const struct lu_env *env, struct obd_export *exp,
558 struct obd_info *oinfo, struct obd_trans_info *oti,
559 struct ptlrpc_request_set *rqset)
561 oinfo->oi_oa->o_size = oinfo->oi_policy.l_extent.start;
562 oinfo->oi_oa->o_blocks = oinfo->oi_policy.l_extent.end;
563 oinfo->oi_oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
564 return osc_punch_base(exp, oinfo,
565 oinfo->oi_cb_up, oinfo, rqset);
568 static int osc_sync_interpret(const struct lu_env *env,
569 struct ptlrpc_request *req,
572 struct osc_fsync_args *fa = arg;
573 struct ost_body *body;
579 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
581 CERROR ("can't unpack ost_body\n");
582 GOTO(out, rc = -EPROTO);
585 *fa->fa_oi->oi_oa = body->oa;
587 rc = fa->fa_upcall(fa->fa_cookie, rc);
591 int osc_sync_base(struct obd_export *exp, struct obd_info *oinfo,
592 obd_enqueue_update_f upcall, void *cookie,
593 struct ptlrpc_request_set *rqset)
595 struct ptlrpc_request *req;
596 struct ost_body *body;
597 struct osc_fsync_args *fa;
601 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SYNC);
605 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
606 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SYNC);
608 ptlrpc_request_free(req);
612 /* overload the size and blocks fields in the oa with start/end */
613 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
615 lustre_set_wire_obdo(&body->oa, oinfo->oi_oa);
616 osc_pack_capa(req, body, oinfo->oi_capa);
618 ptlrpc_request_set_replen(req);
619 req->rq_interpret_reply = osc_sync_interpret;
621 CLASSERT(sizeof(*fa) <= sizeof(req->rq_async_args));
622 fa = ptlrpc_req_async_args(req);
624 fa->fa_upcall = upcall;
625 fa->fa_cookie = cookie;
627 if (rqset == PTLRPCD_SET)
628 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
630 ptlrpc_set_add_req(rqset, req);
635 static int osc_sync(const struct lu_env *env, struct obd_export *exp,
636 struct obd_info *oinfo, obd_size start, obd_size end,
637 struct ptlrpc_request_set *set)
642 CDEBUG(D_INFO, "oa NULL\n");
646 oinfo->oi_oa->o_size = start;
647 oinfo->oi_oa->o_blocks = end;
648 oinfo->oi_oa->o_valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS);
650 RETURN(osc_sync_base(exp, oinfo, oinfo->oi_cb_up, oinfo, set));
653 /* Find and cancel locally locks matched by @mode in the resource found by
654 * @objid. Found locks are added into @cancel list. Returns the amount of
655 * locks added to @cancels list. */
656 static int osc_resource_get_unused(struct obd_export *exp, struct obdo *oa,
658 ldlm_mode_t mode, int lock_flags)
660 struct ldlm_namespace *ns = exp->exp_obd->obd_namespace;
661 struct ldlm_res_id res_id;
662 struct ldlm_resource *res;
666 /* Return, i.e. cancel nothing, only if ELC is supported (flag in
667 * export) but disabled through procfs (flag in NS).
669 * This distinguishes from a case when ELC is not supported originally,
670 * when we still want to cancel locks in advance and just cancel them
671 * locally, without sending any RPC. */
672 if (exp_connect_cancelset(exp) && !ns_connect_cancelset(ns))
675 ostid_build_res_name(&oa->o_oi, &res_id);
676 res = ldlm_resource_get(ns, NULL, &res_id, 0, 0);
680 LDLM_RESOURCE_ADDREF(res);
681 count = ldlm_cancel_resource_local(res, cancels, NULL, mode,
682 lock_flags, 0, NULL);
683 LDLM_RESOURCE_DELREF(res);
684 ldlm_resource_putref(res);
688 static int osc_destroy_interpret(const struct lu_env *env,
689 struct ptlrpc_request *req, void *data,
692 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
694 cfs_atomic_dec(&cli->cl_destroy_in_flight);
695 cfs_waitq_signal(&cli->cl_destroy_waitq);
699 static int osc_can_send_destroy(struct client_obd *cli)
701 if (cfs_atomic_inc_return(&cli->cl_destroy_in_flight) <=
702 cli->cl_max_rpcs_in_flight) {
703 /* The destroy request can be sent */
706 if (cfs_atomic_dec_return(&cli->cl_destroy_in_flight) <
707 cli->cl_max_rpcs_in_flight) {
709 * The counter has been modified between the two atomic
712 cfs_waitq_signal(&cli->cl_destroy_waitq);
717 int osc_create(const struct lu_env *env, struct obd_export *exp,
718 struct obdo *oa, struct lov_stripe_md **ea,
719 struct obd_trans_info *oti)
726 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
728 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
729 oa->o_flags == OBD_FL_RECREATE_OBJS) {
730 RETURN(osc_real_create(exp, oa, ea, oti));
733 if (!fid_seq_is_mdt(oa->o_seq))
734 RETURN(osc_real_create(exp, oa, ea, oti));
736 /* we should not get here anymore */
742 /* Destroy requests can be async always on the client, and we don't even really
743 * care about the return code since the client cannot do anything at all about
745 * When the MDS is unlinking a filename, it saves the file objects into a
746 * recovery llog, and these object records are cancelled when the OST reports
747 * they were destroyed and sync'd to disk (i.e. transaction committed).
748 * If the client dies, or the OST is down when the object should be destroyed,
749 * the records are not cancelled, and when the OST reconnects to the MDS next,
750 * it will retrieve the llog unlink logs and then sends the log cancellation
751 * cookies to the MDS after committing destroy transactions. */
752 static int osc_destroy(const struct lu_env *env, struct obd_export *exp,
753 struct obdo *oa, struct lov_stripe_md *ea,
754 struct obd_trans_info *oti, struct obd_export *md_export,
757 struct client_obd *cli = &exp->exp_obd->u.cli;
758 struct ptlrpc_request *req;
759 struct ost_body *body;
760 CFS_LIST_HEAD(cancels);
765 CDEBUG(D_INFO, "oa NULL\n");
769 count = osc_resource_get_unused(exp, oa, &cancels, LCK_PW,
770 LDLM_FL_DISCARD_DATA);
772 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_DESTROY);
774 ldlm_lock_list_put(&cancels, l_bl_ast, count);
778 osc_set_capa_size(req, &RMF_CAPA1, (struct obd_capa *)capa);
779 rc = ldlm_prep_elc_req(exp, req, LUSTRE_OST_VERSION, OST_DESTROY,
782 ptlrpc_request_free(req);
786 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
787 ptlrpc_at_set_req_timeout(req);
789 if (oti != NULL && oa->o_valid & OBD_MD_FLCOOKIE)
790 oa->o_lcookie = *oti->oti_logcookies;
791 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
793 lustre_set_wire_obdo(&body->oa, oa);
795 osc_pack_capa(req, body, (struct obd_capa *)capa);
796 ptlrpc_request_set_replen(req);
798 /* If osc_destory is for destroying the unlink orphan,
799 * sent from MDT to OST, which should not be blocked here,
800 * because the process might be triggered by ptlrpcd, and
801 * it is not good to block ptlrpcd thread (b=16006)*/
802 if (!(oa->o_flags & OBD_FL_DELORPHAN)) {
803 req->rq_interpret_reply = osc_destroy_interpret;
804 if (!osc_can_send_destroy(cli)) {
805 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP,
809 * Wait until the number of on-going destroy RPCs drops
810 * under max_rpc_in_flight
812 l_wait_event_exclusive(cli->cl_destroy_waitq,
813 osc_can_send_destroy(cli), &lwi);
817 /* Do not wait for response */
818 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
822 static void osc_announce_cached(struct client_obd *cli, struct obdo *oa,
825 obd_flag bits = OBD_MD_FLBLOCKS|OBD_MD_FLGRANT;
827 LASSERT(!(oa->o_valid & bits));
830 client_obd_list_lock(&cli->cl_loi_list_lock);
831 oa->o_dirty = cli->cl_dirty;
832 if (unlikely(cli->cl_dirty - cli->cl_dirty_transit >
833 cli->cl_dirty_max)) {
834 CERROR("dirty %lu - %lu > dirty_max %lu\n",
835 cli->cl_dirty, cli->cl_dirty_transit, cli->cl_dirty_max);
837 } else if (unlikely(cfs_atomic_read(&obd_dirty_pages) -
838 cfs_atomic_read(&obd_dirty_transit_pages) >
839 (long)(obd_max_dirty_pages + 1))) {
840 /* The cfs_atomic_read() allowing the cfs_atomic_inc() are
841 * not covered by a lock thus they may safely race and trip
842 * this CERROR() unless we add in a small fudge factor (+1). */
843 CERROR("dirty %d - %d > system dirty_max %d\n",
844 cfs_atomic_read(&obd_dirty_pages),
845 cfs_atomic_read(&obd_dirty_transit_pages),
846 obd_max_dirty_pages);
848 } else if (unlikely(cli->cl_dirty_max - cli->cl_dirty > 0x7fffffff)) {
849 CERROR("dirty %lu - dirty_max %lu too big???\n",
850 cli->cl_dirty, cli->cl_dirty_max);
853 long max_in_flight = (cli->cl_max_pages_per_rpc <<
855 (cli->cl_max_rpcs_in_flight + 1);
856 oa->o_undirty = max(cli->cl_dirty_max, max_in_flight);
858 oa->o_grant = cli->cl_avail_grant + cli->cl_reserved_grant;
859 oa->o_dropped = cli->cl_lost_grant;
860 cli->cl_lost_grant = 0;
861 client_obd_list_unlock(&cli->cl_loi_list_lock);
862 CDEBUG(D_CACHE,"dirty: "LPU64" undirty: %u dropped %u grant: "LPU64"\n",
863 oa->o_dirty, oa->o_undirty, oa->o_dropped, oa->o_grant);
867 void osc_update_next_shrink(struct client_obd *cli)
869 cli->cl_next_shrink_grant =
870 cfs_time_shift(cli->cl_grant_shrink_interval);
871 CDEBUG(D_CACHE, "next time %ld to shrink grant \n",
872 cli->cl_next_shrink_grant);
875 static void __osc_update_grant(struct client_obd *cli, obd_size grant)
877 client_obd_list_lock(&cli->cl_loi_list_lock);
878 cli->cl_avail_grant += grant;
879 client_obd_list_unlock(&cli->cl_loi_list_lock);
882 static void osc_update_grant(struct client_obd *cli, struct ost_body *body)
884 if (body->oa.o_valid & OBD_MD_FLGRANT) {
885 CDEBUG(D_CACHE, "got "LPU64" extra grant\n", body->oa.o_grant);
886 __osc_update_grant(cli, body->oa.o_grant);
890 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
891 obd_count keylen, void *key, obd_count vallen,
892 void *val, struct ptlrpc_request_set *set);
894 static int osc_shrink_grant_interpret(const struct lu_env *env,
895 struct ptlrpc_request *req,
898 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
899 struct obdo *oa = ((struct osc_grant_args *)aa)->aa_oa;
900 struct ost_body *body;
903 __osc_update_grant(cli, oa->o_grant);
907 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
909 osc_update_grant(cli, body);
915 static void osc_shrink_grant_local(struct client_obd *cli, struct obdo *oa)
917 client_obd_list_lock(&cli->cl_loi_list_lock);
918 oa->o_grant = cli->cl_avail_grant / 4;
919 cli->cl_avail_grant -= oa->o_grant;
920 client_obd_list_unlock(&cli->cl_loi_list_lock);
921 if (!(oa->o_valid & OBD_MD_FLFLAGS)) {
922 oa->o_valid |= OBD_MD_FLFLAGS;
925 oa->o_flags |= OBD_FL_SHRINK_GRANT;
926 osc_update_next_shrink(cli);
929 /* Shrink the current grant, either from some large amount to enough for a
930 * full set of in-flight RPCs, or if we have already shrunk to that limit
931 * then to enough for a single RPC. This avoids keeping more grant than
932 * needed, and avoids shrinking the grant piecemeal. */
933 static int osc_shrink_grant(struct client_obd *cli)
935 __u64 target_bytes = (cli->cl_max_rpcs_in_flight + 1) *
936 (cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT);
938 client_obd_list_lock(&cli->cl_loi_list_lock);
939 if (cli->cl_avail_grant <= target_bytes)
940 target_bytes = cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT;
941 client_obd_list_unlock(&cli->cl_loi_list_lock);
943 return osc_shrink_grant_to_target(cli, target_bytes);
946 int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes)
949 struct ost_body *body;
952 client_obd_list_lock(&cli->cl_loi_list_lock);
953 /* Don't shrink if we are already above or below the desired limit
954 * We don't want to shrink below a single RPC, as that will negatively
955 * impact block allocation and long-term performance. */
956 if (target_bytes < cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT)
957 target_bytes = cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT;
959 if (target_bytes >= cli->cl_avail_grant) {
960 client_obd_list_unlock(&cli->cl_loi_list_lock);
963 client_obd_list_unlock(&cli->cl_loi_list_lock);
969 osc_announce_cached(cli, &body->oa, 0);
971 client_obd_list_lock(&cli->cl_loi_list_lock);
972 body->oa.o_grant = cli->cl_avail_grant - target_bytes;
973 cli->cl_avail_grant = target_bytes;
974 client_obd_list_unlock(&cli->cl_loi_list_lock);
975 if (!(body->oa.o_valid & OBD_MD_FLFLAGS)) {
976 body->oa.o_valid |= OBD_MD_FLFLAGS;
977 body->oa.o_flags = 0;
979 body->oa.o_flags |= OBD_FL_SHRINK_GRANT;
980 osc_update_next_shrink(cli);
982 rc = osc_set_info_async(NULL, cli->cl_import->imp_obd->obd_self_export,
983 sizeof(KEY_GRANT_SHRINK), KEY_GRANT_SHRINK,
984 sizeof(*body), body, NULL);
986 __osc_update_grant(cli, body->oa.o_grant);
991 static int osc_should_shrink_grant(struct client_obd *client)
993 cfs_time_t time = cfs_time_current();
994 cfs_time_t next_shrink = client->cl_next_shrink_grant;
996 if ((client->cl_import->imp_connect_data.ocd_connect_flags &
997 OBD_CONNECT_GRANT_SHRINK) == 0)
1000 if (cfs_time_aftereq(time, next_shrink - 5 * CFS_TICK)) {
1001 /* Get the current RPC size directly, instead of going via:
1002 * cli_brw_size(obd->u.cli.cl_import->imp_obd->obd_self_export)
1003 * Keep comment here so that it can be found by searching. */
1004 int brw_size = client->cl_max_pages_per_rpc << CFS_PAGE_SHIFT;
1006 if (client->cl_import->imp_state == LUSTRE_IMP_FULL &&
1007 client->cl_avail_grant > brw_size)
1010 osc_update_next_shrink(client);
1015 static int osc_grant_shrink_grant_cb(struct timeout_item *item, void *data)
1017 struct client_obd *client;
1019 cfs_list_for_each_entry(client, &item->ti_obd_list,
1020 cl_grant_shrink_list) {
1021 if (osc_should_shrink_grant(client))
1022 osc_shrink_grant(client);
1027 static int osc_add_shrink_grant(struct client_obd *client)
1031 rc = ptlrpc_add_timeout_client(client->cl_grant_shrink_interval,
1033 osc_grant_shrink_grant_cb, NULL,
1034 &client->cl_grant_shrink_list);
1036 CERROR("add grant client %s error %d\n",
1037 client->cl_import->imp_obd->obd_name, rc);
1040 CDEBUG(D_CACHE, "add grant client %s \n",
1041 client->cl_import->imp_obd->obd_name);
1042 osc_update_next_shrink(client);
1046 static int osc_del_shrink_grant(struct client_obd *client)
1048 return ptlrpc_del_timeout_client(&client->cl_grant_shrink_list,
1052 static void osc_init_grant(struct client_obd *cli, struct obd_connect_data *ocd)
1055 * ocd_grant is the total grant amount we're expect to hold: if we've
1056 * been evicted, it's the new avail_grant amount, cl_dirty will drop
1057 * to 0 as inflight RPCs fail out; otherwise, it's avail_grant + dirty.
1059 * race is tolerable here: if we're evicted, but imp_state already
1060 * left EVICTED state, then cl_dirty must be 0 already.
1062 client_obd_list_lock(&cli->cl_loi_list_lock);
1063 if (cli->cl_import->imp_state == LUSTRE_IMP_EVICTED)
1064 cli->cl_avail_grant = ocd->ocd_grant;
1066 cli->cl_avail_grant = ocd->ocd_grant - cli->cl_dirty;
1068 if (cli->cl_avail_grant < 0) {
1069 CWARN("%s: available grant < 0, the OSS is probably not running"
1070 " with patch from bug20278 (%ld) \n",
1071 cli->cl_import->imp_obd->obd_name, cli->cl_avail_grant);
1072 /* workaround for 1.6 servers which do not have
1073 * the patch from bug20278 */
1074 cli->cl_avail_grant = ocd->ocd_grant;
1077 /* determine the appropriate chunk size used by osc_extent. */
1078 cli->cl_chunkbits = max_t(int, CFS_PAGE_SHIFT, ocd->ocd_blocksize);
1079 client_obd_list_unlock(&cli->cl_loi_list_lock);
1081 CDEBUG(D_CACHE, "%s, setting cl_avail_grant: %ld cl_lost_grant: %ld."
1082 "chunk bits: %d.\n", cli->cl_import->imp_obd->obd_name,
1083 cli->cl_avail_grant, cli->cl_lost_grant, cli->cl_chunkbits);
1085 if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT_SHRINK &&
1086 cfs_list_empty(&cli->cl_grant_shrink_list))
1087 osc_add_shrink_grant(cli);
1090 /* We assume that the reason this OSC got a short read is because it read
1091 * beyond the end of a stripe file; i.e. lustre is reading a sparse file
1092 * via the LOV, and it _knows_ it's reading inside the file, it's just that
1093 * this stripe never got written at or beyond this stripe offset yet. */
1094 static void handle_short_read(int nob_read, obd_count page_count,
1095 struct brw_page **pga)
1100 /* skip bytes read OK */
1101 while (nob_read > 0) {
1102 LASSERT (page_count > 0);
1104 if (pga[i]->count > nob_read) {
1105 /* EOF inside this page */
1106 ptr = cfs_kmap(pga[i]->pg) +
1107 (pga[i]->off & ~CFS_PAGE_MASK);
1108 memset(ptr + nob_read, 0, pga[i]->count - nob_read);
1109 cfs_kunmap(pga[i]->pg);
1115 nob_read -= pga[i]->count;
1120 /* zero remaining pages */
1121 while (page_count-- > 0) {
1122 ptr = cfs_kmap(pga[i]->pg) + (pga[i]->off & ~CFS_PAGE_MASK);
1123 memset(ptr, 0, pga[i]->count);
1124 cfs_kunmap(pga[i]->pg);
1129 static int check_write_rcs(struct ptlrpc_request *req,
1130 int requested_nob, int niocount,
1131 obd_count page_count, struct brw_page **pga)
1136 remote_rcs = req_capsule_server_sized_get(&req->rq_pill, &RMF_RCS,
1137 sizeof(*remote_rcs) *
1139 if (remote_rcs == NULL) {
1140 CDEBUG(D_INFO, "Missing/short RC vector on BRW_WRITE reply\n");
1144 /* return error if any niobuf was in error */
1145 for (i = 0; i < niocount; i++) {
1146 if ((int)remote_rcs[i] < 0)
1147 return(remote_rcs[i]);
1149 if (remote_rcs[i] != 0) {
1150 CDEBUG(D_INFO, "rc[%d] invalid (%d) req %p\n",
1151 i, remote_rcs[i], req);
1156 if (req->rq_bulk->bd_nob_transferred != requested_nob) {
1157 CERROR("Unexpected # bytes transferred: %d (requested %d)\n",
1158 req->rq_bulk->bd_nob_transferred, requested_nob);
1165 static inline int can_merge_pages(struct brw_page *p1, struct brw_page *p2)
1167 if (p1->flag != p2->flag) {
1168 unsigned mask = ~(OBD_BRW_FROM_GRANT| OBD_BRW_NOCACHE|
1169 OBD_BRW_SYNC|OBD_BRW_ASYNC|OBD_BRW_NOQUOTA);
1171 /* warn if we try to combine flags that we don't know to be
1172 * safe to combine */
1173 if (unlikely((p1->flag & mask) != (p2->flag & mask))) {
1174 CWARN("Saw flags 0x%x and 0x%x in the same brw, please "
1175 "report this at http://bugs.whamcloud.com/\n",
1176 p1->flag, p2->flag);
1181 return (p1->off + p1->count == p2->off);
1184 static obd_count osc_checksum_bulk(int nob, obd_count pg_count,
1185 struct brw_page **pga, int opc,
1186 cksum_type_t cksum_type)
1190 struct cfs_crypto_hash_desc *hdesc;
1191 unsigned int bufsize;
1193 unsigned char cfs_alg = cksum_obd2cfs(cksum_type);
1195 LASSERT(pg_count > 0);
1197 hdesc = cfs_crypto_hash_init(cfs_alg, NULL, 0);
1198 if (IS_ERR(hdesc)) {
1199 CERROR("Unable to initialize checksum hash %s\n",
1200 cfs_crypto_hash_name(cfs_alg));
1201 return PTR_ERR(hdesc);
1204 while (nob > 0 && pg_count > 0) {
1205 int count = pga[i]->count > nob ? nob : pga[i]->count;
1207 /* corrupt the data before we compute the checksum, to
1208 * simulate an OST->client data error */
1209 if (i == 0 && opc == OST_READ &&
1210 OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_RECEIVE)) {
1211 unsigned char *ptr = cfs_kmap(pga[i]->pg);
1212 int off = pga[i]->off & ~CFS_PAGE_MASK;
1213 memcpy(ptr + off, "bad1", min(4, nob));
1214 cfs_kunmap(pga[i]->pg);
1216 cfs_crypto_hash_update_page(hdesc, pga[i]->pg,
1217 pga[i]->off & ~CFS_PAGE_MASK,
1219 LL_CDEBUG_PAGE(D_PAGE, pga[i]->pg, "off %d checksum %x\n",
1220 (int)(pga[i]->off & ~CFS_PAGE_MASK), cksum);
1222 nob -= pga[i]->count;
1228 err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize);
1231 cfs_crypto_hash_final(hdesc, NULL, NULL);
1233 /* For sending we only compute the wrong checksum instead
1234 * of corrupting the data so it is still correct on a redo */
1235 if (opc == OST_WRITE && OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_SEND))
1241 static int osc_brw_prep_request(int cmd, struct client_obd *cli,struct obdo *oa,
1242 struct lov_stripe_md *lsm, obd_count page_count,
1243 struct brw_page **pga,
1244 struct ptlrpc_request **reqp,
1245 struct obd_capa *ocapa, int reserve,
1248 struct ptlrpc_request *req;
1249 struct ptlrpc_bulk_desc *desc;
1250 struct ost_body *body;
1251 struct obd_ioobj *ioobj;
1252 struct niobuf_remote *niobuf;
1253 int niocount, i, requested_nob, opc, rc;
1254 struct osc_brw_async_args *aa;
1255 struct req_capsule *pill;
1256 struct brw_page *pg_prev;
1259 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ))
1260 RETURN(-ENOMEM); /* Recoverable */
1261 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ2))
1262 RETURN(-EINVAL); /* Fatal */
1264 if ((cmd & OBD_BRW_WRITE) != 0) {
1266 req = ptlrpc_request_alloc_pool(cli->cl_import,
1267 cli->cl_import->imp_rq_pool,
1268 &RQF_OST_BRW_WRITE);
1271 req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_BRW_READ);
1276 for (niocount = i = 1; i < page_count; i++) {
1277 if (!can_merge_pages(pga[i - 1], pga[i]))
1281 pill = &req->rq_pill;
1282 req_capsule_set_size(pill, &RMF_OBD_IOOBJ, RCL_CLIENT,
1284 req_capsule_set_size(pill, &RMF_NIOBUF_REMOTE, RCL_CLIENT,
1285 niocount * sizeof(*niobuf));
1286 osc_set_capa_size(req, &RMF_CAPA1, ocapa);
1288 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, opc);
1290 ptlrpc_request_free(req);
1293 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
1294 ptlrpc_at_set_req_timeout(req);
1295 /* ask ptlrpc not to resend on EINPROGRESS since BRWs have their own
1297 req->rq_no_retry_einprogress = 1;
1299 desc = ptlrpc_prep_bulk_imp(req, page_count,
1300 cli->cl_import->imp_connect_data.ocd_brw_size >> LNET_MTU_BITS,
1301 opc == OST_WRITE ? BULK_GET_SOURCE : BULK_PUT_SINK,
1305 GOTO(out, rc = -ENOMEM);
1306 /* NB request now owns desc and will free it when it gets freed */
1308 body = req_capsule_client_get(pill, &RMF_OST_BODY);
1309 ioobj = req_capsule_client_get(pill, &RMF_OBD_IOOBJ);
1310 niobuf = req_capsule_client_get(pill, &RMF_NIOBUF_REMOTE);
1311 LASSERT(body != NULL && ioobj != NULL && niobuf != NULL);
1313 lustre_set_wire_obdo(&body->oa, oa);
1315 obdo_to_ioobj(oa, ioobj);
1316 ioobj->ioo_bufcnt = niocount;
1317 /* The high bits of ioo_max_brw tells server _maximum_ number of bulks
1318 * that might be send for this request. The actual number is decided
1319 * when the RPC is finally sent in ptlrpc_register_bulk(). It sends
1320 * "max - 1" for old client compatibility sending "0", and also so the
1321 * the actual maximum is a power-of-two number, not one less. LU-1431 */
1322 ioobj_max_brw_set(ioobj, desc->bd_md_max_brw);
1323 osc_pack_capa(req, body, ocapa);
1324 LASSERT(page_count > 0);
1326 for (requested_nob = i = 0; i < page_count; i++, niobuf++) {
1327 struct brw_page *pg = pga[i];
1328 int poff = pg->off & ~CFS_PAGE_MASK;
1330 LASSERT(pg->count > 0);
1331 /* make sure there is no gap in the middle of page array */
1332 LASSERTF(page_count == 1 ||
1333 (ergo(i == 0, poff + pg->count == CFS_PAGE_SIZE) &&
1334 ergo(i > 0 && i < page_count - 1,
1335 poff == 0 && pg->count == CFS_PAGE_SIZE) &&
1336 ergo(i == page_count - 1, poff == 0)),
1337 "i: %d/%d pg: %p off: "LPU64", count: %u\n",
1338 i, page_count, pg, pg->off, pg->count);
1340 LASSERTF(i == 0 || pg->off > pg_prev->off,
1341 "i %d p_c %u pg %p [pri %lu ind %lu] off "LPU64
1342 " prev_pg %p [pri %lu ind %lu] off "LPU64"\n",
1344 pg->pg, page_private(pg->pg), pg->pg->index, pg->off,
1345 pg_prev->pg, page_private(pg_prev->pg),
1346 pg_prev->pg->index, pg_prev->off);
1348 LASSERTF(i == 0 || pg->off > pg_prev->off,
1349 "i %d p_c %u\n", i, page_count);
1351 LASSERT((pga[0]->flag & OBD_BRW_SRVLOCK) ==
1352 (pg->flag & OBD_BRW_SRVLOCK));
1354 ptlrpc_prep_bulk_page_pin(desc, pg->pg, poff, pg->count);
1355 requested_nob += pg->count;
1357 if (i > 0 && can_merge_pages(pg_prev, pg)) {
1359 niobuf->len += pg->count;
1361 niobuf->offset = pg->off;
1362 niobuf->len = pg->count;
1363 niobuf->flags = pg->flag;
1368 LASSERTF((void *)(niobuf - niocount) ==
1369 req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE),
1370 "want %p - real %p\n", req_capsule_client_get(&req->rq_pill,
1371 &RMF_NIOBUF_REMOTE), (void *)(niobuf - niocount));
1373 osc_announce_cached(cli, &body->oa, opc == OST_WRITE ? requested_nob:0);
1375 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
1376 body->oa.o_valid |= OBD_MD_FLFLAGS;
1377 body->oa.o_flags = 0;
1379 body->oa.o_flags |= OBD_FL_RECOV_RESEND;
1382 if (osc_should_shrink_grant(cli))
1383 osc_shrink_grant_local(cli, &body->oa);
1385 /* size[REQ_REC_OFF] still sizeof (*body) */
1386 if (opc == OST_WRITE) {
1387 if (cli->cl_checksum &&
1388 !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
1389 /* store cl_cksum_type in a local variable since
1390 * it can be changed via lprocfs */
1391 cksum_type_t cksum_type = cli->cl_cksum_type;
1393 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
1394 oa->o_flags &= OBD_FL_LOCAL_MASK;
1395 body->oa.o_flags = 0;
1397 body->oa.o_flags |= cksum_type_pack(cksum_type);
1398 body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1399 body->oa.o_cksum = osc_checksum_bulk(requested_nob,
1403 CDEBUG(D_PAGE, "checksum at write origin: %x\n",
1405 /* save this in 'oa', too, for later checking */
1406 oa->o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1407 oa->o_flags |= cksum_type_pack(cksum_type);
1409 /* clear out the checksum flag, in case this is a
1410 * resend but cl_checksum is no longer set. b=11238 */
1411 oa->o_valid &= ~OBD_MD_FLCKSUM;
1413 oa->o_cksum = body->oa.o_cksum;
1414 /* 1 RC per niobuf */
1415 req_capsule_set_size(pill, &RMF_RCS, RCL_SERVER,
1416 sizeof(__u32) * niocount);
1418 if (cli->cl_checksum &&
1419 !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
1420 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0)
1421 body->oa.o_flags = 0;
1422 body->oa.o_flags |= cksum_type_pack(cli->cl_cksum_type);
1423 body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1426 ptlrpc_request_set_replen(req);
1428 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
1429 aa = ptlrpc_req_async_args(req);
1431 aa->aa_requested_nob = requested_nob;
1432 aa->aa_nio_count = niocount;
1433 aa->aa_page_count = page_count;
1437 CFS_INIT_LIST_HEAD(&aa->aa_oaps);
1438 if (ocapa && reserve)
1439 aa->aa_ocapa = capa_get(ocapa);
1445 ptlrpc_req_finished(req);
1449 static int check_write_checksum(struct obdo *oa, const lnet_process_id_t *peer,
1450 __u32 client_cksum, __u32 server_cksum, int nob,
1451 obd_count page_count, struct brw_page **pga,
1452 cksum_type_t client_cksum_type)
1456 cksum_type_t cksum_type;
1458 if (server_cksum == client_cksum) {
1459 CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
1463 cksum_type = cksum_type_unpack(oa->o_valid & OBD_MD_FLFLAGS ?
1465 new_cksum = osc_checksum_bulk(nob, page_count, pga, OST_WRITE,
1468 if (cksum_type != client_cksum_type)
1469 msg = "the server did not use the checksum type specified in "
1470 "the original request - likely a protocol problem";
1471 else if (new_cksum == server_cksum)
1472 msg = "changed on the client after we checksummed it - "
1473 "likely false positive due to mmap IO (bug 11742)";
1474 else if (new_cksum == client_cksum)
1475 msg = "changed in transit before arrival at OST";
1477 msg = "changed in transit AND doesn't match the original - "
1478 "likely false positive due to mmap IO (bug 11742)";
1480 LCONSOLE_ERROR_MSG(0x132, "BAD WRITE CHECKSUM: %s: from %s inode "DFID
1481 " object "LPU64"/"LPU64" extent ["LPU64"-"LPU64"]\n",
1482 msg, libcfs_nid2str(peer->nid),
1483 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : (__u64)0,
1484 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0,
1485 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0,
1487 oa->o_valid & OBD_MD_FLGROUP ? oa->o_seq : (__u64)0,
1489 pga[page_count-1]->off + pga[page_count-1]->count - 1);
1490 CERROR("original client csum %x (type %x), server csum %x (type %x), "
1491 "client csum now %x\n", client_cksum, client_cksum_type,
1492 server_cksum, cksum_type, new_cksum);
1496 /* Note rc enters this function as number of bytes transferred */
1497 static int osc_brw_fini_request(struct ptlrpc_request *req, int rc)
1499 struct osc_brw_async_args *aa = (void *)&req->rq_async_args;
1500 const lnet_process_id_t *peer =
1501 &req->rq_import->imp_connection->c_peer;
1502 struct client_obd *cli = aa->aa_cli;
1503 struct ost_body *body;
1504 __u32 client_cksum = 0;
1507 if (rc < 0 && rc != -EDQUOT) {
1508 DEBUG_REQ(D_INFO, req, "Failed request with rc = %d\n", rc);
1512 LASSERTF(req->rq_repmsg != NULL, "rc = %d\n", rc);
1513 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
1515 DEBUG_REQ(D_INFO, req, "Can't unpack body\n");
1519 /* set/clear over quota flag for a uid/gid */
1520 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE &&
1521 body->oa.o_valid & (OBD_MD_FLUSRQUOTA | OBD_MD_FLGRPQUOTA)) {
1522 unsigned int qid[MAXQUOTAS] = { body->oa.o_uid, body->oa.o_gid };
1524 CDEBUG(D_QUOTA, "setdq for [%u %u] with valid "LPX64", flags %x\n",
1525 body->oa.o_uid, body->oa.o_gid, body->oa.o_valid,
1527 osc_quota_setdq(cli, qid, body->oa.o_valid, body->oa.o_flags);
1530 osc_update_grant(cli, body);
1535 if (aa->aa_oa->o_valid & OBD_MD_FLCKSUM)
1536 client_cksum = aa->aa_oa->o_cksum; /* save for later */
1538 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) {
1540 CERROR("Unexpected +ve rc %d\n", rc);
1543 LASSERT(req->rq_bulk->bd_nob == aa->aa_requested_nob);
1545 if (sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk))
1548 if ((aa->aa_oa->o_valid & OBD_MD_FLCKSUM) && client_cksum &&
1549 check_write_checksum(&body->oa, peer, client_cksum,
1550 body->oa.o_cksum, aa->aa_requested_nob,
1551 aa->aa_page_count, aa->aa_ppga,
1552 cksum_type_unpack(aa->aa_oa->o_flags)))
1555 rc = check_write_rcs(req, aa->aa_requested_nob,aa->aa_nio_count,
1556 aa->aa_page_count, aa->aa_ppga);
1560 /* The rest of this function executes only for OST_READs */
1562 /* if unwrap_bulk failed, return -EAGAIN to retry */
1563 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk, rc);
1565 GOTO(out, rc = -EAGAIN);
1567 if (rc > aa->aa_requested_nob) {
1568 CERROR("Unexpected rc %d (%d requested)\n", rc,
1569 aa->aa_requested_nob);
1573 if (rc != req->rq_bulk->bd_nob_transferred) {
1574 CERROR ("Unexpected rc %d (%d transferred)\n",
1575 rc, req->rq_bulk->bd_nob_transferred);
1579 if (rc < aa->aa_requested_nob)
1580 handle_short_read(rc, aa->aa_page_count, aa->aa_ppga);
1582 if (body->oa.o_valid & OBD_MD_FLCKSUM) {
1583 static int cksum_counter;
1584 __u32 server_cksum = body->oa.o_cksum;
1587 cksum_type_t cksum_type;
1589 cksum_type = cksum_type_unpack(body->oa.o_valid &OBD_MD_FLFLAGS?
1590 body->oa.o_flags : 0);
1591 client_cksum = osc_checksum_bulk(rc, aa->aa_page_count,
1592 aa->aa_ppga, OST_READ,
1595 if (peer->nid == req->rq_bulk->bd_sender) {
1599 router = libcfs_nid2str(req->rq_bulk->bd_sender);
1602 if (server_cksum == ~0 && rc > 0) {
1603 CERROR("Protocol error: server %s set the 'checksum' "
1604 "bit, but didn't send a checksum. Not fatal, "
1605 "but please notify on http://bugs.whamcloud.com/\n",
1606 libcfs_nid2str(peer->nid));
1607 } else if (server_cksum != client_cksum) {
1608 LCONSOLE_ERROR_MSG(0x133, "%s: BAD READ CHECKSUM: from "
1609 "%s%s%s inode "DFID" object "
1610 LPU64"/"LPU64" extent "
1611 "["LPU64"-"LPU64"]\n",
1612 req->rq_import->imp_obd->obd_name,
1613 libcfs_nid2str(peer->nid),
1615 body->oa.o_valid & OBD_MD_FLFID ?
1616 body->oa.o_parent_seq : (__u64)0,
1617 body->oa.o_valid & OBD_MD_FLFID ?
1618 body->oa.o_parent_oid : 0,
1619 body->oa.o_valid & OBD_MD_FLFID ?
1620 body->oa.o_parent_ver : 0,
1622 body->oa.o_valid & OBD_MD_FLGROUP ?
1623 body->oa.o_seq : (__u64)0,
1624 aa->aa_ppga[0]->off,
1625 aa->aa_ppga[aa->aa_page_count-1]->off +
1626 aa->aa_ppga[aa->aa_page_count-1]->count -
1628 CERROR("client %x, server %x, cksum_type %x\n",
1629 client_cksum, server_cksum, cksum_type);
1631 aa->aa_oa->o_cksum = client_cksum;
1635 CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
1638 } else if (unlikely(client_cksum)) {
1639 static int cksum_missed;
1642 if ((cksum_missed & (-cksum_missed)) == cksum_missed)
1643 CERROR("Checksum %u requested from %s but not sent\n",
1644 cksum_missed, libcfs_nid2str(peer->nid));
1650 lustre_get_wire_obdo(aa->aa_oa, &body->oa);
1655 static int osc_brw_internal(int cmd, struct obd_export *exp, struct obdo *oa,
1656 struct lov_stripe_md *lsm,
1657 obd_count page_count, struct brw_page **pga,
1658 struct obd_capa *ocapa)
1660 struct ptlrpc_request *req;
1663 int generation, resends = 0;
1664 struct l_wait_info lwi;
1668 cfs_waitq_init(&waitq);
1669 generation = exp->exp_obd->u.cli.cl_import->imp_generation;
1672 rc = osc_brw_prep_request(cmd, &exp->exp_obd->u.cli, oa, lsm,
1673 page_count, pga, &req, ocapa, 0, resends);
1678 req->rq_generation_set = 1;
1679 req->rq_import_generation = generation;
1680 req->rq_sent = cfs_time_current_sec() + resends;
1683 rc = ptlrpc_queue_wait(req);
1685 if (rc == -ETIMEDOUT && req->rq_resend) {
1686 DEBUG_REQ(D_HA, req, "BULK TIMEOUT");
1687 ptlrpc_req_finished(req);
1691 rc = osc_brw_fini_request(req, rc);
1693 ptlrpc_req_finished(req);
1694 /* When server return -EINPROGRESS, client should always retry
1695 * regardless of the number of times the bulk was resent already.*/
1696 if (osc_recoverable_error(rc)) {
1698 if (rc != -EINPROGRESS &&
1699 !client_should_resend(resends, &exp->exp_obd->u.cli)) {
1700 CERROR("%s: too many resend retries for object: "
1701 ""LPU64":"LPU64", rc = %d.\n",
1702 exp->exp_obd->obd_name, oa->o_id, oa->o_seq, rc);
1706 exp->exp_obd->u.cli.cl_import->imp_generation) {
1707 CDEBUG(D_HA, "%s: resend cross eviction for object: "
1708 ""LPU64":"LPU64", rc = %d.\n",
1709 exp->exp_obd->obd_name, oa->o_id, oa->o_seq, rc);
1713 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL,
1715 l_wait_event(waitq, 0, &lwi);
1720 if (rc == -EAGAIN || rc == -EINPROGRESS)
1725 static int osc_brw_redo_request(struct ptlrpc_request *request,
1726 struct osc_brw_async_args *aa, int rc)
1728 struct ptlrpc_request *new_req;
1729 struct osc_brw_async_args *new_aa;
1730 struct osc_async_page *oap;
1733 DEBUG_REQ(rc == -EINPROGRESS ? D_RPCTRACE : D_ERROR, request,
1734 "redo for recoverable error %d", rc);
1736 rc = osc_brw_prep_request(lustre_msg_get_opc(request->rq_reqmsg) ==
1737 OST_WRITE ? OBD_BRW_WRITE :OBD_BRW_READ,
1738 aa->aa_cli, aa->aa_oa,
1739 NULL /* lsm unused by osc currently */,
1740 aa->aa_page_count, aa->aa_ppga,
1741 &new_req, aa->aa_ocapa, 0, 1);
1745 cfs_list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
1746 if (oap->oap_request != NULL) {
1747 LASSERTF(request == oap->oap_request,
1748 "request %p != oap_request %p\n",
1749 request, oap->oap_request);
1750 if (oap->oap_interrupted) {
1751 ptlrpc_req_finished(new_req);
1756 /* New request takes over pga and oaps from old request.
1757 * Note that copying a list_head doesn't work, need to move it... */
1759 new_req->rq_interpret_reply = request->rq_interpret_reply;
1760 new_req->rq_async_args = request->rq_async_args;
1761 /* cap resend delay to the current request timeout, this is similar to
1762 * what ptlrpc does (see after_reply()) */
1763 if (aa->aa_resends > new_req->rq_timeout)
1764 new_req->rq_sent = cfs_time_current_sec() + new_req->rq_timeout;
1766 new_req->rq_sent = cfs_time_current_sec() + aa->aa_resends;
1767 new_req->rq_generation_set = 1;
1768 new_req->rq_import_generation = request->rq_import_generation;
1770 new_aa = ptlrpc_req_async_args(new_req);
1772 CFS_INIT_LIST_HEAD(&new_aa->aa_oaps);
1773 cfs_list_splice_init(&aa->aa_oaps, &new_aa->aa_oaps);
1774 CFS_INIT_LIST_HEAD(&new_aa->aa_exts);
1775 cfs_list_splice_init(&aa->aa_exts, &new_aa->aa_exts);
1776 new_aa->aa_resends = aa->aa_resends;
1778 cfs_list_for_each_entry(oap, &new_aa->aa_oaps, oap_rpc_item) {
1779 if (oap->oap_request) {
1780 ptlrpc_req_finished(oap->oap_request);
1781 oap->oap_request = ptlrpc_request_addref(new_req);
1785 new_aa->aa_ocapa = aa->aa_ocapa;
1786 aa->aa_ocapa = NULL;
1788 /* XXX: This code will run into problem if we're going to support
1789 * to add a series of BRW RPCs into a self-defined ptlrpc_request_set
1790 * and wait for all of them to be finished. We should inherit request
1791 * set from old request. */
1792 ptlrpcd_add_req(new_req, PDL_POLICY_SAME, -1);
1794 DEBUG_REQ(D_INFO, new_req, "new request");
1799 * ugh, we want disk allocation on the target to happen in offset order. we'll
1800 * follow sedgewicks advice and stick to the dead simple shellsort -- it'll do
1801 * fine for our small page arrays and doesn't require allocation. its an
1802 * insertion sort that swaps elements that are strides apart, shrinking the
1803 * stride down until its '1' and the array is sorted.
1805 static void sort_brw_pages(struct brw_page **array, int num)
1808 struct brw_page *tmp;
1812 for (stride = 1; stride < num ; stride = (stride * 3) + 1)
1817 for (i = stride ; i < num ; i++) {
1820 while (j >= stride && array[j - stride]->off > tmp->off) {
1821 array[j] = array[j - stride];
1826 } while (stride > 1);
1829 static obd_count max_unfragmented_pages(struct brw_page **pg, obd_count pages)
1835 LASSERT (pages > 0);
1836 offset = pg[i]->off & ~CFS_PAGE_MASK;
1840 if (pages == 0) /* that's all */
1843 if (offset + pg[i]->count < CFS_PAGE_SIZE)
1844 return count; /* doesn't end on page boundary */
1847 offset = pg[i]->off & ~CFS_PAGE_MASK;
1848 if (offset != 0) /* doesn't start on page boundary */
1855 static struct brw_page **osc_build_ppga(struct brw_page *pga, obd_count count)
1857 struct brw_page **ppga;
1860 OBD_ALLOC(ppga, sizeof(*ppga) * count);
1864 for (i = 0; i < count; i++)
1869 static void osc_release_ppga(struct brw_page **ppga, obd_count count)
1871 LASSERT(ppga != NULL);
1872 OBD_FREE(ppga, sizeof(*ppga) * count);
1875 static int osc_brw(int cmd, struct obd_export *exp, struct obd_info *oinfo,
1876 obd_count page_count, struct brw_page *pga,
1877 struct obd_trans_info *oti)
1879 struct obdo *saved_oa = NULL;
1880 struct brw_page **ppga, **orig;
1881 struct obd_import *imp = class_exp2cliimp(exp);
1882 struct client_obd *cli;
1883 int rc, page_count_orig;
1886 LASSERT((imp != NULL) && (imp->imp_obd != NULL));
1887 cli = &imp->imp_obd->u.cli;
1889 if (cmd & OBD_BRW_CHECK) {
1890 /* The caller just wants to know if there's a chance that this
1891 * I/O can succeed */
1893 if (imp->imp_invalid)
1898 /* test_brw with a failed create can trip this, maybe others. */
1899 LASSERT(cli->cl_max_pages_per_rpc);
1903 orig = ppga = osc_build_ppga(pga, page_count);
1906 page_count_orig = page_count;
1908 sort_brw_pages(ppga, page_count);
1909 while (page_count) {
1910 obd_count pages_per_brw;
1912 if (page_count > cli->cl_max_pages_per_rpc)
1913 pages_per_brw = cli->cl_max_pages_per_rpc;
1915 pages_per_brw = page_count;
1917 pages_per_brw = max_unfragmented_pages(ppga, pages_per_brw);
1919 if (saved_oa != NULL) {
1920 /* restore previously saved oa */
1921 *oinfo->oi_oa = *saved_oa;
1922 } else if (page_count > pages_per_brw) {
1923 /* save a copy of oa (brw will clobber it) */
1924 OBDO_ALLOC(saved_oa);
1925 if (saved_oa == NULL)
1926 GOTO(out, rc = -ENOMEM);
1927 *saved_oa = *oinfo->oi_oa;
1930 rc = osc_brw_internal(cmd, exp, oinfo->oi_oa, oinfo->oi_md,
1931 pages_per_brw, ppga, oinfo->oi_capa);
1936 page_count -= pages_per_brw;
1937 ppga += pages_per_brw;
1941 osc_release_ppga(orig, page_count_orig);
1943 if (saved_oa != NULL)
1944 OBDO_FREE(saved_oa);
1949 static int brw_interpret(const struct lu_env *env,
1950 struct ptlrpc_request *req, void *data, int rc)
1952 struct osc_brw_async_args *aa = data;
1953 struct osc_extent *ext;
1954 struct osc_extent *tmp;
1955 struct cl_object *obj = NULL;
1956 struct client_obd *cli = aa->aa_cli;
1959 rc = osc_brw_fini_request(req, rc);
1960 CDEBUG(D_INODE, "request %p aa %p rc %d\n", req, aa, rc);
1961 /* When server return -EINPROGRESS, client should always retry
1962 * regardless of the number of times the bulk was resent already. */
1963 if (osc_recoverable_error(rc)) {
1964 if (req->rq_import_generation !=
1965 req->rq_import->imp_generation) {
1966 CDEBUG(D_HA, "%s: resend cross eviction for object: "
1967 ""LPU64":"LPU64", rc = %d.\n",
1968 req->rq_import->imp_obd->obd_name,
1969 aa->aa_oa->o_id, aa->aa_oa->o_seq, rc);
1970 } else if (rc == -EINPROGRESS ||
1971 client_should_resend(aa->aa_resends, aa->aa_cli)) {
1972 rc = osc_brw_redo_request(req, aa, rc);
1974 CERROR("%s: too many resent retries for object: "
1975 ""LPU64":"LPU64", rc = %d.\n",
1976 req->rq_import->imp_obd->obd_name,
1977 aa->aa_oa->o_id, aa->aa_oa->o_seq, rc);
1982 else if (rc == -EAGAIN || rc == -EINPROGRESS)
1987 capa_put(aa->aa_ocapa);
1988 aa->aa_ocapa = NULL;
1991 cfs_list_for_each_entry_safe(ext, tmp, &aa->aa_exts, oe_link) {
1992 if (obj == NULL && rc == 0) {
1993 obj = osc2cl(ext->oe_obj);
1997 cfs_list_del_init(&ext->oe_link);
1998 osc_extent_finish(env, ext, 1, rc);
2000 LASSERT(cfs_list_empty(&aa->aa_exts));
2001 LASSERT(cfs_list_empty(&aa->aa_oaps));
2004 struct obdo *oa = aa->aa_oa;
2005 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
2006 unsigned long valid = 0;
2009 if (oa->o_valid & OBD_MD_FLBLOCKS) {
2010 attr->cat_blocks = oa->o_blocks;
2011 valid |= CAT_BLOCKS;
2013 if (oa->o_valid & OBD_MD_FLMTIME) {
2014 attr->cat_mtime = oa->o_mtime;
2017 if (oa->o_valid & OBD_MD_FLATIME) {
2018 attr->cat_atime = oa->o_atime;
2021 if (oa->o_valid & OBD_MD_FLCTIME) {
2022 attr->cat_ctime = oa->o_ctime;
2026 cl_object_attr_lock(obj);
2027 cl_object_attr_set(env, obj, attr, valid);
2028 cl_object_attr_unlock(obj);
2030 cl_object_put(env, obj);
2032 OBDO_FREE(aa->aa_oa);
2034 cl_req_completion(env, aa->aa_clerq, rc < 0 ? rc :
2035 req->rq_bulk->bd_nob_transferred);
2036 osc_release_ppga(aa->aa_ppga, aa->aa_page_count);
2037 ptlrpc_lprocfs_brw(req, req->rq_bulk->bd_nob_transferred);
2039 client_obd_list_lock(&cli->cl_loi_list_lock);
2040 /* We need to decrement before osc_ap_completion->osc_wake_cache_waiters
2041 * is called so we know whether to go to sync BRWs or wait for more
2042 * RPCs to complete */
2043 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE)
2044 cli->cl_w_in_flight--;
2046 cli->cl_r_in_flight--;
2047 osc_wake_cache_waiters(cli);
2048 client_obd_list_unlock(&cli->cl_loi_list_lock);
2050 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
2055 * Build an RPC by the list of extent @ext_list. The caller must ensure
2056 * that the total pages in this list are NOT over max pages per RPC.
2057 * Extents in the list must be in OES_RPC state.
2059 int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
2060 cfs_list_t *ext_list, int cmd, pdl_policy_t pol)
2062 struct ptlrpc_request *req = NULL;
2063 struct osc_extent *ext;
2064 CFS_LIST_HEAD(rpc_list);
2065 struct brw_page **pga = NULL;
2066 struct osc_brw_async_args *aa = NULL;
2067 struct obdo *oa = NULL;
2068 struct osc_async_page *oap;
2069 struct osc_async_page *tmp;
2070 struct cl_req *clerq = NULL;
2071 enum cl_req_type crt = (cmd & OBD_BRW_WRITE) ? CRT_WRITE : CRT_READ;
2072 struct ldlm_lock *lock = NULL;
2073 struct cl_req_attr crattr;
2074 obd_off starting_offset = OBD_OBJECT_EOF;
2075 obd_off ending_offset = 0;
2076 int i, rc, mpflag = 0, mem_tight = 0, page_count = 0;
2079 LASSERT(!cfs_list_empty(ext_list));
2081 /* add pages into rpc_list to build BRW rpc */
2082 cfs_list_for_each_entry(ext, ext_list, oe_link) {
2083 LASSERT(ext->oe_state == OES_RPC);
2084 mem_tight |= ext->oe_memalloc;
2085 cfs_list_for_each_entry(oap, &ext->oe_pages, oap_pending_item) {
2087 cfs_list_add_tail(&oap->oap_rpc_item, &rpc_list);
2088 if (starting_offset > oap->oap_obj_off)
2089 starting_offset = oap->oap_obj_off;
2091 LASSERT(oap->oap_page_off == 0);
2092 if (ending_offset < oap->oap_obj_off + oap->oap_count)
2093 ending_offset = oap->oap_obj_off +
2096 LASSERT(oap->oap_page_off + oap->oap_count ==
2102 mpflag = cfs_memory_pressure_get_and_set();
2104 memset(&crattr, 0, sizeof crattr);
2105 OBD_ALLOC(pga, sizeof(*pga) * page_count);
2107 GOTO(out, rc = -ENOMEM);
2111 GOTO(out, rc = -ENOMEM);
2114 cfs_list_for_each_entry(oap, &rpc_list, oap_rpc_item) {
2115 struct cl_page *page = oap2cl_page(oap);
2116 if (clerq == NULL) {
2117 clerq = cl_req_alloc(env, page, crt,
2118 1 /* only 1-object rpcs for
2121 GOTO(out, rc = PTR_ERR(clerq));
2122 lock = oap->oap_ldlm_lock;
2125 oap->oap_brw_flags |= OBD_BRW_MEMALLOC;
2126 pga[i] = &oap->oap_brw_page;
2127 pga[i]->off = oap->oap_obj_off + oap->oap_page_off;
2128 CDEBUG(0, "put page %p index %lu oap %p flg %x to pga\n",
2129 pga[i]->pg, cfs_page_index(oap->oap_page), oap, pga[i]->flag);
2131 cl_req_page_add(env, clerq, page);
2134 /* always get the data for the obdo for the rpc */
2135 LASSERT(clerq != NULL);
2137 crattr.cra_capa = NULL;
2138 memset(crattr.cra_jobid, 0, JOBSTATS_JOBID_SIZE);
2139 cl_req_attr_set(env, clerq, &crattr, ~0ULL);
2141 oa->o_handle = lock->l_remote_handle;
2142 oa->o_valid |= OBD_MD_FLHANDLE;
2145 rc = cl_req_prep(env, clerq);
2147 CERROR("cl_req_prep failed: %d\n", rc);
2151 sort_brw_pages(pga, page_count);
2152 rc = osc_brw_prep_request(cmd, cli, oa, NULL, page_count,
2153 pga, &req, crattr.cra_capa, 1, 0);
2155 CERROR("prep_req failed: %d\n", rc);
2159 req->rq_interpret_reply = brw_interpret;
2161 req->rq_memalloc = 1;
2163 /* Need to update the timestamps after the request is built in case
2164 * we race with setattr (locally or in queue at OST). If OST gets
2165 * later setattr before earlier BRW (as determined by the request xid),
2166 * the OST will not use BRW timestamps. Sadly, there is no obvious
2167 * way to do this in a single call. bug 10150 */
2168 cl_req_attr_set(env, clerq, &crattr,
2169 OBD_MD_FLMTIME|OBD_MD_FLCTIME|OBD_MD_FLATIME);
2171 lustre_msg_set_jobid(req->rq_reqmsg, crattr.cra_jobid);
2173 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
2174 aa = ptlrpc_req_async_args(req);
2175 CFS_INIT_LIST_HEAD(&aa->aa_oaps);
2176 cfs_list_splice_init(&rpc_list, &aa->aa_oaps);
2177 CFS_INIT_LIST_HEAD(&aa->aa_exts);
2178 cfs_list_splice_init(ext_list, &aa->aa_exts);
2179 aa->aa_clerq = clerq;
2181 /* queued sync pages can be torn down while the pages
2182 * were between the pending list and the rpc */
2184 cfs_list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
2185 /* only one oap gets a request reference */
2188 if (oap->oap_interrupted && !req->rq_intr) {
2189 CDEBUG(D_INODE, "oap %p in req %p interrupted\n",
2191 ptlrpc_mark_interrupted(req);
2195 tmp->oap_request = ptlrpc_request_addref(req);
2197 client_obd_list_lock(&cli->cl_loi_list_lock);
2198 starting_offset >>= CFS_PAGE_SHIFT;
2199 if (cmd == OBD_BRW_READ) {
2200 cli->cl_r_in_flight++;
2201 lprocfs_oh_tally_log2(&cli->cl_read_page_hist, page_count);
2202 lprocfs_oh_tally(&cli->cl_read_rpc_hist, cli->cl_r_in_flight);
2203 lprocfs_oh_tally_log2(&cli->cl_read_offset_hist,
2204 starting_offset + 1);
2206 cli->cl_w_in_flight++;
2207 lprocfs_oh_tally_log2(&cli->cl_write_page_hist, page_count);
2208 lprocfs_oh_tally(&cli->cl_write_rpc_hist, cli->cl_w_in_flight);
2209 lprocfs_oh_tally_log2(&cli->cl_write_offset_hist,
2210 starting_offset + 1);
2212 client_obd_list_unlock(&cli->cl_loi_list_lock);
2214 DEBUG_REQ(D_INODE, req, "%d pages, aa %p. now %dr/%dw in flight",
2215 page_count, aa, cli->cl_r_in_flight,
2216 cli->cl_w_in_flight);
2218 /* XXX: Maybe the caller can check the RPC bulk descriptor to
2219 * see which CPU/NUMA node the majority of pages were allocated
2220 * on, and try to assign the async RPC to the CPU core
2221 * (PDL_POLICY_PREFERRED) to reduce cross-CPU memory traffic.
2223 * But on the other hand, we expect that multiple ptlrpcd
2224 * threads and the initial write sponsor can run in parallel,
2225 * especially when data checksum is enabled, which is CPU-bound
2226 * operation and single ptlrpcd thread cannot process in time.
2227 * So more ptlrpcd threads sharing BRW load
2228 * (with PDL_POLICY_ROUND) seems better.
2230 ptlrpcd_add_req(req, pol, -1);
2236 cfs_memory_pressure_restore(mpflag);
2238 capa_put(crattr.cra_capa);
2240 LASSERT(req == NULL);
2245 OBD_FREE(pga, sizeof(*pga) * page_count);
2246 /* this should happen rarely and is pretty bad, it makes the
2247 * pending list not follow the dirty order */
2248 while (!cfs_list_empty(ext_list)) {
2249 ext = cfs_list_entry(ext_list->next, struct osc_extent,
2251 cfs_list_del_init(&ext->oe_link);
2252 osc_extent_finish(env, ext, 0, rc);
2254 if (clerq && !IS_ERR(clerq))
2255 cl_req_completion(env, clerq, rc);
2260 static int osc_set_lock_data_with_check(struct ldlm_lock *lock,
2261 struct ldlm_enqueue_info *einfo)
2263 void *data = einfo->ei_cbdata;
2266 LASSERT(lock != NULL);
2267 LASSERT(lock->l_blocking_ast == einfo->ei_cb_bl);
2268 LASSERT(lock->l_resource->lr_type == einfo->ei_type);
2269 LASSERT(lock->l_completion_ast == einfo->ei_cb_cp);
2270 LASSERT(lock->l_glimpse_ast == einfo->ei_cb_gl);
2272 lock_res_and_lock(lock);
2273 spin_lock(&osc_ast_guard);
2275 if (lock->l_ast_data == NULL)
2276 lock->l_ast_data = data;
2277 if (lock->l_ast_data == data)
2280 spin_unlock(&osc_ast_guard);
2281 unlock_res_and_lock(lock);
2286 static int osc_set_data_with_check(struct lustre_handle *lockh,
2287 struct ldlm_enqueue_info *einfo)
2289 struct ldlm_lock *lock = ldlm_handle2lock(lockh);
2293 set = osc_set_lock_data_with_check(lock, einfo);
2294 LDLM_LOCK_PUT(lock);
2296 CERROR("lockh %p, data %p - client evicted?\n",
2297 lockh, einfo->ei_cbdata);
2301 static int osc_change_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
2302 ldlm_iterator_t replace, void *data)
2304 struct ldlm_res_id res_id;
2305 struct obd_device *obd = class_exp2obd(exp);
2307 ostid_build_res_name(&lsm->lsm_object_oid, &res_id);
2308 ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
2312 /* find any ldlm lock of the inode in osc
2316 static int osc_find_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
2317 ldlm_iterator_t replace, void *data)
2319 struct ldlm_res_id res_id;
2320 struct obd_device *obd = class_exp2obd(exp);
2323 ostid_build_res_name(&lsm->lsm_object_oid, &res_id);
2324 rc = ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
2325 if (rc == LDLM_ITER_STOP)
2327 if (rc == LDLM_ITER_CONTINUE)
2332 static int osc_enqueue_fini(struct ptlrpc_request *req, struct ost_lvb *lvb,
2333 obd_enqueue_update_f upcall, void *cookie,
2334 __u64 *flags, int agl, int rc)
2336 int intent = *flags & LDLM_FL_HAS_INTENT;
2340 /* The request was created before ldlm_cli_enqueue call. */
2341 if (rc == ELDLM_LOCK_ABORTED) {
2342 struct ldlm_reply *rep;
2343 rep = req_capsule_server_get(&req->rq_pill,
2346 LASSERT(rep != NULL);
2347 if (rep->lock_policy_res1)
2348 rc = rep->lock_policy_res1;
2352 if ((intent != 0 && rc == ELDLM_LOCK_ABORTED && agl == 0) ||
2354 *flags |= LDLM_FL_LVB_READY;
2355 CDEBUG(D_INODE,"got kms "LPU64" blocks "LPU64" mtime "LPU64"\n",
2356 lvb->lvb_size, lvb->lvb_blocks, lvb->lvb_mtime);
2359 /* Call the update callback. */
2360 rc = (*upcall)(cookie, rc);
2364 static int osc_enqueue_interpret(const struct lu_env *env,
2365 struct ptlrpc_request *req,
2366 struct osc_enqueue_args *aa, int rc)
2368 struct ldlm_lock *lock;
2369 struct lustre_handle handle;
2371 struct ost_lvb *lvb;
2373 __u64 *flags = aa->oa_flags;
2375 /* Make a local copy of a lock handle and a mode, because aa->oa_*
2376 * might be freed anytime after lock upcall has been called. */
2377 lustre_handle_copy(&handle, aa->oa_lockh);
2378 mode = aa->oa_ei->ei_mode;
2380 /* ldlm_cli_enqueue is holding a reference on the lock, so it must
2382 lock = ldlm_handle2lock(&handle);
2384 /* Take an additional reference so that a blocking AST that
2385 * ldlm_cli_enqueue_fini() might post for a failed lock, is guaranteed
2386 * to arrive after an upcall has been executed by
2387 * osc_enqueue_fini(). */
2388 ldlm_lock_addref(&handle, mode);
2390 /* Let CP AST to grant the lock first. */
2391 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_ENQ_RACE, 1);
2393 if (aa->oa_agl && rc == ELDLM_LOCK_ABORTED) {
2398 lvb_len = sizeof(*aa->oa_lvb);
2401 /* Complete obtaining the lock procedure. */
2402 rc = ldlm_cli_enqueue_fini(aa->oa_exp, req, aa->oa_ei->ei_type, 1,
2403 mode, flags, lvb, lvb_len, &handle, rc);
2404 /* Complete osc stuff. */
2405 rc = osc_enqueue_fini(req, aa->oa_lvb, aa->oa_upcall, aa->oa_cookie,
2406 flags, aa->oa_agl, rc);
2408 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_CANCEL_RACE, 10);
2410 /* Release the lock for async request. */
2411 if (lustre_handle_is_used(&handle) && rc == ELDLM_OK)
2413 * Releases a reference taken by ldlm_cli_enqueue(), if it is
2414 * not already released by
2415 * ldlm_cli_enqueue_fini()->failed_lock_cleanup()
2417 ldlm_lock_decref(&handle, mode);
2419 LASSERTF(lock != NULL, "lockh %p, req %p, aa %p - client evicted?\n",
2420 aa->oa_lockh, req, aa);
2421 ldlm_lock_decref(&handle, mode);
2422 LDLM_LOCK_PUT(lock);
2426 void osc_update_enqueue(struct lustre_handle *lov_lockhp,
2427 struct lov_oinfo *loi, int flags,
2428 struct ost_lvb *lvb, __u32 mode, int rc)
2430 struct ldlm_lock *lock = ldlm_handle2lock(lov_lockhp);
2432 if (rc == ELDLM_OK) {
2435 LASSERT(lock != NULL);
2436 loi->loi_lvb = *lvb;
2437 tmp = loi->loi_lvb.lvb_size;
2438 /* Extend KMS up to the end of this lock and no further
2439 * A lock on [x,y] means a KMS of up to y + 1 bytes! */
2440 if (tmp > lock->l_policy_data.l_extent.end)
2441 tmp = lock->l_policy_data.l_extent.end + 1;
2442 if (tmp >= loi->loi_kms) {
2443 LDLM_DEBUG(lock, "lock acquired, setting rss="LPU64
2444 ", kms="LPU64, loi->loi_lvb.lvb_size, tmp);
2445 loi_kms_set(loi, tmp);
2447 LDLM_DEBUG(lock, "lock acquired, setting rss="
2448 LPU64"; leaving kms="LPU64", end="LPU64,
2449 loi->loi_lvb.lvb_size, loi->loi_kms,
2450 lock->l_policy_data.l_extent.end);
2452 ldlm_lock_allow_match(lock);
2453 } else if (rc == ELDLM_LOCK_ABORTED && (flags & LDLM_FL_HAS_INTENT)) {
2454 LASSERT(lock != NULL);
2455 loi->loi_lvb = *lvb;
2456 ldlm_lock_allow_match(lock);
2457 CDEBUG(D_INODE, "glimpsed, setting rss="LPU64"; leaving"
2458 " kms="LPU64"\n", loi->loi_lvb.lvb_size, loi->loi_kms);
2464 ldlm_lock_fail_match(lock);
2466 LDLM_LOCK_PUT(lock);
2469 EXPORT_SYMBOL(osc_update_enqueue);
2471 struct ptlrpc_request_set *PTLRPCD_SET = (void *)1;
2473 /* When enqueuing asynchronously, locks are not ordered, we can obtain a lock
2474 * from the 2nd OSC before a lock from the 1st one. This does not deadlock with
2475 * other synchronous requests, however keeping some locks and trying to obtain
2476 * others may take a considerable amount of time in a case of ost failure; and
2477 * when other sync requests do not get released lock from a client, the client
2478 * is excluded from the cluster -- such scenarious make the life difficult, so
2479 * release locks just after they are obtained. */
2480 int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2481 __u64 *flags, ldlm_policy_data_t *policy,
2482 struct ost_lvb *lvb, int kms_valid,
2483 obd_enqueue_update_f upcall, void *cookie,
2484 struct ldlm_enqueue_info *einfo,
2485 struct lustre_handle *lockh,
2486 struct ptlrpc_request_set *rqset, int async, int agl)
2488 struct obd_device *obd = exp->exp_obd;
2489 struct ptlrpc_request *req = NULL;
2490 int intent = *flags & LDLM_FL_HAS_INTENT;
2491 int match_lvb = (agl != 0 ? 0 : LDLM_FL_LVB_READY);
2496 /* Filesystem lock extents are extended to page boundaries so that
2497 * dealing with the page cache is a little smoother. */
2498 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2499 policy->l_extent.end |= ~CFS_PAGE_MASK;
2502 * kms is not valid when either object is completely fresh (so that no
2503 * locks are cached), or object was evicted. In the latter case cached
2504 * lock cannot be used, because it would prime inode state with
2505 * potentially stale LVB.
2510 /* Next, search for already existing extent locks that will cover us */
2511 /* If we're trying to read, we also search for an existing PW lock. The
2512 * VFS and page cache already protect us locally, so lots of readers/
2513 * writers can share a single PW lock.
2515 * There are problems with conversion deadlocks, so instead of
2516 * converting a read lock to a write lock, we'll just enqueue a new
2519 * At some point we should cancel the read lock instead of making them
2520 * send us a blocking callback, but there are problems with canceling
2521 * locks out from other users right now, too. */
2522 mode = einfo->ei_mode;
2523 if (einfo->ei_mode == LCK_PR)
2525 mode = ldlm_lock_match(obd->obd_namespace, *flags | match_lvb, res_id,
2526 einfo->ei_type, policy, mode, lockh, 0);
2528 struct ldlm_lock *matched = ldlm_handle2lock(lockh);
2530 if ((agl != 0) && !(matched->l_flags & LDLM_FL_LVB_READY)) {
2531 /* For AGL, if enqueue RPC is sent but the lock is not
2532 * granted, then skip to process this strpe.
2533 * Return -ECANCELED to tell the caller. */
2534 ldlm_lock_decref(lockh, mode);
2535 LDLM_LOCK_PUT(matched);
2537 } else if (osc_set_lock_data_with_check(matched, einfo)) {
2538 *flags |= LDLM_FL_LVB_READY;
2539 /* addref the lock only if not async requests and PW
2540 * lock is matched whereas we asked for PR. */
2541 if (!rqset && einfo->ei_mode != mode)
2542 ldlm_lock_addref(lockh, LCK_PR);
2544 /* I would like to be able to ASSERT here that
2545 * rss <= kms, but I can't, for reasons which
2546 * are explained in lov_enqueue() */
2549 /* We already have a lock, and it's referenced.
2551 * At this point, the cl_lock::cll_state is CLS_QUEUING,
2552 * AGL upcall may change it to CLS_HELD directly. */
2553 (*upcall)(cookie, ELDLM_OK);
2555 if (einfo->ei_mode != mode)
2556 ldlm_lock_decref(lockh, LCK_PW);
2558 /* For async requests, decref the lock. */
2559 ldlm_lock_decref(lockh, einfo->ei_mode);
2560 LDLM_LOCK_PUT(matched);
2563 ldlm_lock_decref(lockh, mode);
2564 LDLM_LOCK_PUT(matched);
2570 CFS_LIST_HEAD(cancels);
2571 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2572 &RQF_LDLM_ENQUEUE_LVB);
2576 rc = ldlm_prep_enqueue_req(exp, req, &cancels, 0);
2578 ptlrpc_request_free(req);
2582 req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
2584 ptlrpc_request_set_replen(req);
2587 /* users of osc_enqueue() can pass this flag for ldlm_lock_match() */
2588 *flags &= ~LDLM_FL_BLOCK_GRANTED;
2590 rc = ldlm_cli_enqueue(exp, &req, einfo, res_id, policy, flags, lvb,
2591 sizeof(*lvb), LVB_T_OST, lockh, async);
2594 struct osc_enqueue_args *aa;
2595 CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
2596 aa = ptlrpc_req_async_args(req);
2599 aa->oa_flags = flags;
2600 aa->oa_upcall = upcall;
2601 aa->oa_cookie = cookie;
2603 aa->oa_lockh = lockh;
2606 req->rq_interpret_reply =
2607 (ptlrpc_interpterer_t)osc_enqueue_interpret;
2608 if (rqset == PTLRPCD_SET)
2609 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
2611 ptlrpc_set_add_req(rqset, req);
2612 } else if (intent) {
2613 ptlrpc_req_finished(req);
2618 rc = osc_enqueue_fini(req, lvb, upcall, cookie, flags, agl, rc);
2620 ptlrpc_req_finished(req);
2625 static int osc_enqueue(struct obd_export *exp, struct obd_info *oinfo,
2626 struct ldlm_enqueue_info *einfo,
2627 struct ptlrpc_request_set *rqset)
2629 struct ldlm_res_id res_id;
2633 ostid_build_res_name(&oinfo->oi_md->lsm_object_oid, &res_id);
2634 rc = osc_enqueue_base(exp, &res_id, &oinfo->oi_flags, &oinfo->oi_policy,
2635 &oinfo->oi_md->lsm_oinfo[0]->loi_lvb,
2636 oinfo->oi_md->lsm_oinfo[0]->loi_kms_valid,
2637 oinfo->oi_cb_up, oinfo, einfo, oinfo->oi_lockh,
2638 rqset, rqset != NULL, 0);
2642 int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2643 __u32 type, ldlm_policy_data_t *policy, __u32 mode,
2644 int *flags, void *data, struct lustre_handle *lockh,
2647 struct obd_device *obd = exp->exp_obd;
2648 int lflags = *flags;
2652 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_MATCH))
2655 /* Filesystem lock extents are extended to page boundaries so that
2656 * dealing with the page cache is a little smoother */
2657 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2658 policy->l_extent.end |= ~CFS_PAGE_MASK;
2660 /* Next, search for already existing extent locks that will cover us */
2661 /* If we're trying to read, we also search for an existing PW lock. The
2662 * VFS and page cache already protect us locally, so lots of readers/
2663 * writers can share a single PW lock. */
2667 rc = ldlm_lock_match(obd->obd_namespace, lflags,
2668 res_id, type, policy, rc, lockh, unref);
2671 if (!osc_set_data_with_check(lockh, data)) {
2672 if (!(lflags & LDLM_FL_TEST_LOCK))
2673 ldlm_lock_decref(lockh, rc);
2677 if (!(lflags & LDLM_FL_TEST_LOCK) && mode != rc) {
2678 ldlm_lock_addref(lockh, LCK_PR);
2679 ldlm_lock_decref(lockh, LCK_PW);
2686 int osc_cancel_base(struct lustre_handle *lockh, __u32 mode)
2690 if (unlikely(mode == LCK_GROUP))
2691 ldlm_lock_decref_and_cancel(lockh, mode);
2693 ldlm_lock_decref(lockh, mode);
2698 static int osc_cancel(struct obd_export *exp, struct lov_stripe_md *md,
2699 __u32 mode, struct lustre_handle *lockh)
2702 RETURN(osc_cancel_base(lockh, mode));
2705 static int osc_cancel_unused(struct obd_export *exp,
2706 struct lov_stripe_md *lsm,
2707 ldlm_cancel_flags_t flags,
2710 struct obd_device *obd = class_exp2obd(exp);
2711 struct ldlm_res_id res_id, *resp = NULL;
2714 ostid_build_res_name(&lsm->lsm_object_oid, &res_id);
2718 return ldlm_cli_cancel_unused(obd->obd_namespace, resp, flags, opaque);
2721 static int osc_statfs_interpret(const struct lu_env *env,
2722 struct ptlrpc_request *req,
2723 struct osc_async_args *aa, int rc)
2725 struct obd_statfs *msfs;
2729 /* The request has in fact never been sent
2730 * due to issues at a higher level (LOV).
2731 * Exit immediately since the caller is
2732 * aware of the problem and takes care
2733 * of the clean up */
2736 if ((rc == -ENOTCONN || rc == -EAGAIN) &&
2737 (aa->aa_oi->oi_flags & OBD_STATFS_NODELAY))
2743 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2745 GOTO(out, rc = -EPROTO);
2748 *aa->aa_oi->oi_osfs = *msfs;
2750 rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
2754 static int osc_statfs_async(struct obd_export *exp,
2755 struct obd_info *oinfo, __u64 max_age,
2756 struct ptlrpc_request_set *rqset)
2758 struct obd_device *obd = class_exp2obd(exp);
2759 struct ptlrpc_request *req;
2760 struct osc_async_args *aa;
2764 /* We could possibly pass max_age in the request (as an absolute
2765 * timestamp or a "seconds.usec ago") so the target can avoid doing
2766 * extra calls into the filesystem if that isn't necessary (e.g.
2767 * during mount that would help a bit). Having relative timestamps
2768 * is not so great if request processing is slow, while absolute
2769 * timestamps are not ideal because they need time synchronization. */
2770 req = ptlrpc_request_alloc(obd->u.cli.cl_import, &RQF_OST_STATFS);
2774 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2776 ptlrpc_request_free(req);
2779 ptlrpc_request_set_replen(req);
2780 req->rq_request_portal = OST_CREATE_PORTAL;
2781 ptlrpc_at_set_req_timeout(req);
2783 if (oinfo->oi_flags & OBD_STATFS_NODELAY) {
2784 /* procfs requests not want stat in wait for avoid deadlock */
2785 req->rq_no_resend = 1;
2786 req->rq_no_delay = 1;
2789 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_statfs_interpret;
2790 CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
2791 aa = ptlrpc_req_async_args(req);
2794 ptlrpc_set_add_req(rqset, req);
2798 static int osc_statfs(const struct lu_env *env, struct obd_export *exp,
2799 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
2801 struct obd_device *obd = class_exp2obd(exp);
2802 struct obd_statfs *msfs;
2803 struct ptlrpc_request *req;
2804 struct obd_import *imp = NULL;
2808 /*Since the request might also come from lprocfs, so we need
2809 *sync this with client_disconnect_export Bug15684*/
2810 down_read(&obd->u.cli.cl_sem);
2811 if (obd->u.cli.cl_import)
2812 imp = class_import_get(obd->u.cli.cl_import);
2813 up_read(&obd->u.cli.cl_sem);
2817 /* We could possibly pass max_age in the request (as an absolute
2818 * timestamp or a "seconds.usec ago") so the target can avoid doing
2819 * extra calls into the filesystem if that isn't necessary (e.g.
2820 * during mount that would help a bit). Having relative timestamps
2821 * is not so great if request processing is slow, while absolute
2822 * timestamps are not ideal because they need time synchronization. */
2823 req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
2825 class_import_put(imp);
2830 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2832 ptlrpc_request_free(req);
2835 ptlrpc_request_set_replen(req);
2836 req->rq_request_portal = OST_CREATE_PORTAL;
2837 ptlrpc_at_set_req_timeout(req);
2839 if (flags & OBD_STATFS_NODELAY) {
2840 /* procfs requests not want stat in wait for avoid deadlock */
2841 req->rq_no_resend = 1;
2842 req->rq_no_delay = 1;
2845 rc = ptlrpc_queue_wait(req);
2849 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2851 GOTO(out, rc = -EPROTO);
2858 ptlrpc_req_finished(req);
2862 /* Retrieve object striping information.
2864 * @lmmu is a pointer to an in-core struct with lmm_ost_count indicating
2865 * the maximum number of OST indices which will fit in the user buffer.
2866 * lmm_magic must be LOV_MAGIC (we only use 1 slot here).
2868 static int osc_getstripe(struct lov_stripe_md *lsm, struct lov_user_md *lump)
2870 /* we use lov_user_md_v3 because it is larger than lov_user_md_v1 */
2871 struct lov_user_md_v3 lum, *lumk;
2872 struct lov_user_ost_data_v1 *lmm_objects;
2873 int rc = 0, lum_size;
2879 /* we only need the header part from user space to get lmm_magic and
2880 * lmm_stripe_count, (the header part is common to v1 and v3) */
2881 lum_size = sizeof(struct lov_user_md_v1);
2882 if (cfs_copy_from_user(&lum, lump, lum_size))
2885 if ((lum.lmm_magic != LOV_USER_MAGIC_V1) &&
2886 (lum.lmm_magic != LOV_USER_MAGIC_V3))
2889 /* lov_user_md_vX and lov_mds_md_vX must have the same size */
2890 LASSERT(sizeof(struct lov_user_md_v1) == sizeof(struct lov_mds_md_v1));
2891 LASSERT(sizeof(struct lov_user_md_v3) == sizeof(struct lov_mds_md_v3));
2892 LASSERT(sizeof(lum.lmm_objects[0]) == sizeof(lumk->lmm_objects[0]));
2894 /* we can use lov_mds_md_size() to compute lum_size
2895 * because lov_user_md_vX and lov_mds_md_vX have the same size */
2896 if (lum.lmm_stripe_count > 0) {
2897 lum_size = lov_mds_md_size(lum.lmm_stripe_count, lum.lmm_magic);
2898 OBD_ALLOC(lumk, lum_size);
2902 if (lum.lmm_magic == LOV_USER_MAGIC_V1)
2903 lmm_objects = &(((struct lov_user_md_v1 *)lumk)->lmm_objects[0]);
2905 lmm_objects = &(lumk->lmm_objects[0]);
2906 lmm_objects->l_object_id = lsm->lsm_object_id;
2908 lum_size = lov_mds_md_size(0, lum.lmm_magic);
2912 lumk->lmm_object_id = lsm->lsm_object_id;
2913 lumk->lmm_object_seq = lsm->lsm_object_seq;
2914 lumk->lmm_stripe_count = 1;
2916 if (cfs_copy_to_user(lump, lumk, lum_size))
2920 OBD_FREE(lumk, lum_size);
2926 static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2927 void *karg, void *uarg)
2929 struct obd_device *obd = exp->exp_obd;
2930 struct obd_ioctl_data *data = karg;
2934 if (!cfs_try_module_get(THIS_MODULE)) {
2935 CERROR("Can't get module. Is it alive?");
2939 case OBD_IOC_LOV_GET_CONFIG: {
2941 struct lov_desc *desc;
2942 struct obd_uuid uuid;
2946 if (obd_ioctl_getdata(&buf, &len, (void *)uarg))
2947 GOTO(out, err = -EINVAL);
2949 data = (struct obd_ioctl_data *)buf;
2951 if (sizeof(*desc) > data->ioc_inllen1) {
2952 obd_ioctl_freedata(buf, len);
2953 GOTO(out, err = -EINVAL);
2956 if (data->ioc_inllen2 < sizeof(uuid)) {
2957 obd_ioctl_freedata(buf, len);
2958 GOTO(out, err = -EINVAL);
2961 desc = (struct lov_desc *)data->ioc_inlbuf1;
2962 desc->ld_tgt_count = 1;
2963 desc->ld_active_tgt_count = 1;
2964 desc->ld_default_stripe_count = 1;
2965 desc->ld_default_stripe_size = 0;
2966 desc->ld_default_stripe_offset = 0;
2967 desc->ld_pattern = 0;
2968 memcpy(&desc->ld_uuid, &obd->obd_uuid, sizeof(uuid));
2970 memcpy(data->ioc_inlbuf2, &obd->obd_uuid, sizeof(uuid));
2972 err = cfs_copy_to_user((void *)uarg, buf, len);
2975 obd_ioctl_freedata(buf, len);
2978 case LL_IOC_LOV_SETSTRIPE:
2979 err = obd_alloc_memmd(exp, karg);
2983 case LL_IOC_LOV_GETSTRIPE:
2984 err = osc_getstripe(karg, uarg);
2986 case OBD_IOC_CLIENT_RECOVER:
2987 err = ptlrpc_recover_import(obd->u.cli.cl_import,
2988 data->ioc_inlbuf1, 0);
2992 case IOC_OSC_SET_ACTIVE:
2993 err = ptlrpc_set_import_active(obd->u.cli.cl_import,
2996 case OBD_IOC_POLL_QUOTACHECK:
2997 err = osc_quota_poll_check(exp, (struct if_quotacheck *)karg);
2999 case OBD_IOC_PING_TARGET:
3000 err = ptlrpc_obd_ping(obd);
3003 CDEBUG(D_INODE, "unrecognised ioctl %#x by %s\n",
3004 cmd, cfs_curproc_comm());
3005 GOTO(out, err = -ENOTTY);
3008 cfs_module_put(THIS_MODULE);
3012 static int osc_get_info(const struct lu_env *env, struct obd_export *exp,
3013 obd_count keylen, void *key, __u32 *vallen, void *val,
3014 struct lov_stripe_md *lsm)
3017 if (!vallen || !val)
3020 if (KEY_IS(KEY_LOCK_TO_STRIPE)) {
3021 __u32 *stripe = val;
3022 *vallen = sizeof(*stripe);
3025 } else if (KEY_IS(KEY_LAST_ID)) {
3026 struct ptlrpc_request *req;
3031 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
3032 &RQF_OST_GET_INFO_LAST_ID);
3036 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
3037 RCL_CLIENT, keylen);
3038 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
3040 ptlrpc_request_free(req);
3044 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
3045 memcpy(tmp, key, keylen);
3047 req->rq_no_delay = req->rq_no_resend = 1;
3048 ptlrpc_request_set_replen(req);
3049 rc = ptlrpc_queue_wait(req);
3053 reply = req_capsule_server_get(&req->rq_pill, &RMF_OBD_ID);
3055 GOTO(out, rc = -EPROTO);
3057 *((obd_id *)val) = *reply;
3059 ptlrpc_req_finished(req);
3061 } else if (KEY_IS(KEY_FIEMAP)) {
3062 struct ptlrpc_request *req;
3063 struct ll_user_fiemap *reply;
3067 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
3068 &RQF_OST_GET_INFO_FIEMAP);
3072 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_KEY,
3073 RCL_CLIENT, keylen);
3074 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
3075 RCL_CLIENT, *vallen);
3076 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
3077 RCL_SERVER, *vallen);
3079 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
3081 ptlrpc_request_free(req);
3085 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_KEY);
3086 memcpy(tmp, key, keylen);
3087 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_VAL);
3088 memcpy(tmp, val, *vallen);
3090 ptlrpc_request_set_replen(req);
3091 rc = ptlrpc_queue_wait(req);
3095 reply = req_capsule_server_get(&req->rq_pill, &RMF_FIEMAP_VAL);
3097 GOTO(out1, rc = -EPROTO);
3099 memcpy(val, reply, *vallen);
3101 ptlrpc_req_finished(req);
3109 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
3110 obd_count keylen, void *key, obd_count vallen,
3111 void *val, struct ptlrpc_request_set *set)
3113 struct ptlrpc_request *req;
3114 struct obd_device *obd = exp->exp_obd;
3115 struct obd_import *imp = class_exp2cliimp(exp);
3120 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_SHUTDOWN, 10);
3122 if (KEY_IS(KEY_CHECKSUM)) {
3123 if (vallen != sizeof(int))
3125 exp->exp_obd->u.cli.cl_checksum = (*(int *)val) ? 1 : 0;
3129 if (KEY_IS(KEY_SPTLRPC_CONF)) {
3130 sptlrpc_conf_client_adapt(obd);
3134 if (KEY_IS(KEY_FLUSH_CTX)) {
3135 sptlrpc_import_flush_my_ctx(imp);
3139 if (KEY_IS(KEY_CACHE_SET)) {
3140 struct client_obd *cli = &obd->u.cli;
3142 LASSERT(cli->cl_cache == NULL); /* only once */
3143 cli->cl_cache = (struct cl_client_cache *)val;
3144 cfs_atomic_inc(&cli->cl_cache->ccc_users);
3145 cli->cl_lru_left = &cli->cl_cache->ccc_lru_left;
3147 /* add this osc into entity list */
3148 LASSERT(cfs_list_empty(&cli->cl_lru_osc));
3149 spin_lock(&cli->cl_cache->ccc_lru_lock);
3150 cfs_list_add(&cli->cl_lru_osc, &cli->cl_cache->ccc_lru);
3151 spin_unlock(&cli->cl_cache->ccc_lru_lock);
3156 if (KEY_IS(KEY_CACHE_LRU_SHRINK)) {
3157 struct client_obd *cli = &obd->u.cli;
3158 int nr = cfs_atomic_read(&cli->cl_lru_in_list) >> 1;
3159 int target = *(int *)val;
3161 nr = osc_lru_shrink(cli, min(nr, target));
3166 if (!set && !KEY_IS(KEY_GRANT_SHRINK))
3169 /* We pass all other commands directly to OST. Since nobody calls osc
3170 methods directly and everybody is supposed to go through LOV, we
3171 assume lov checked invalid values for us.
3172 The only recognised values so far are evict_by_nid and mds_conn.
3173 Even if something bad goes through, we'd get a -EINVAL from OST
3176 req = ptlrpc_request_alloc(imp, KEY_IS(KEY_GRANT_SHRINK) ?
3177 &RQF_OST_SET_GRANT_INFO :
3182 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
3183 RCL_CLIENT, keylen);
3184 if (!KEY_IS(KEY_GRANT_SHRINK))
3185 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
3186 RCL_CLIENT, vallen);
3187 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SET_INFO);
3189 ptlrpc_request_free(req);
3193 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
3194 memcpy(tmp, key, keylen);
3195 tmp = req_capsule_client_get(&req->rq_pill, KEY_IS(KEY_GRANT_SHRINK) ?
3198 memcpy(tmp, val, vallen);
3200 if (KEY_IS(KEY_GRANT_SHRINK)) {
3201 struct osc_grant_args *aa;
3204 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
3205 aa = ptlrpc_req_async_args(req);
3208 ptlrpc_req_finished(req);
3211 *oa = ((struct ost_body *)val)->oa;
3213 req->rq_interpret_reply = osc_shrink_grant_interpret;
3216 ptlrpc_request_set_replen(req);
3217 if (!KEY_IS(KEY_GRANT_SHRINK)) {
3218 LASSERT(set != NULL);
3219 ptlrpc_set_add_req(set, req);
3220 ptlrpc_check_set(NULL, set);
3222 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
3228 static int osc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
3229 struct obd_device *disk_obd, int *index)
3231 /* this code is not supposed to be used with LOD/OSP
3232 * to be removed soon */
3237 static int osc_llog_finish(struct obd_device *obd, int count)
3239 struct llog_ctxt *ctxt;
3243 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
3245 llog_cat_close(NULL, ctxt->loc_handle);
3246 llog_cleanup(NULL, ctxt);
3249 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
3251 llog_cleanup(NULL, ctxt);
3255 static int osc_reconnect(const struct lu_env *env,
3256 struct obd_export *exp, struct obd_device *obd,
3257 struct obd_uuid *cluuid,
3258 struct obd_connect_data *data,
3261 struct client_obd *cli = &obd->u.cli;
3263 if (data != NULL && (data->ocd_connect_flags & OBD_CONNECT_GRANT)) {
3266 client_obd_list_lock(&cli->cl_loi_list_lock);
3267 data->ocd_grant = (cli->cl_avail_grant + cli->cl_dirty) ?:
3268 2 * cli_brw_size(obd);
3269 lost_grant = cli->cl_lost_grant;
3270 cli->cl_lost_grant = 0;
3271 client_obd_list_unlock(&cli->cl_loi_list_lock);
3273 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d"
3274 " ocd_grant: %d, lost: %ld.\n", data->ocd_connect_flags,
3275 data->ocd_version, data->ocd_grant, lost_grant);
3281 static int osc_disconnect(struct obd_export *exp)
3283 struct obd_device *obd = class_exp2obd(exp);
3284 struct llog_ctxt *ctxt;
3287 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
3289 if (obd->u.cli.cl_conn_count == 1) {
3290 /* Flush any remaining cancel messages out to the
3292 llog_sync(ctxt, exp, 0);
3294 llog_ctxt_put(ctxt);
3296 CDEBUG(D_HA, "No LLOG_SIZE_REPL_CTXT found in obd %p\n",
3300 rc = client_disconnect_export(exp);
3302 * Initially we put del_shrink_grant before disconnect_export, but it
3303 * causes the following problem if setup (connect) and cleanup
3304 * (disconnect) are tangled together.
3305 * connect p1 disconnect p2
3306 * ptlrpc_connect_import
3307 * ............... class_manual_cleanup
3310 * ptlrpc_connect_interrupt
3312 * add this client to shrink list
3314 * Bang! pinger trigger the shrink.
3315 * So the osc should be disconnected from the shrink list, after we
3316 * are sure the import has been destroyed. BUG18662
3318 if (obd->u.cli.cl_import == NULL)
3319 osc_del_shrink_grant(&obd->u.cli);
3323 static int osc_import_event(struct obd_device *obd,
3324 struct obd_import *imp,
3325 enum obd_import_event event)
3327 struct client_obd *cli;
3331 LASSERT(imp->imp_obd == obd);
3334 case IMP_EVENT_DISCON: {
3336 client_obd_list_lock(&cli->cl_loi_list_lock);
3337 cli->cl_avail_grant = 0;
3338 cli->cl_lost_grant = 0;
3339 client_obd_list_unlock(&cli->cl_loi_list_lock);
3342 case IMP_EVENT_INACTIVE: {
3343 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
3346 case IMP_EVENT_INVALIDATE: {
3347 struct ldlm_namespace *ns = obd->obd_namespace;
3351 env = cl_env_get(&refcheck);
3355 /* all pages go to failing rpcs due to the invalid
3357 osc_io_unplug(env, cli, NULL, PDL_POLICY_ROUND);
3359 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
3360 cl_env_put(env, &refcheck);
3365 case IMP_EVENT_ACTIVE: {
3366 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
3369 case IMP_EVENT_OCD: {
3370 struct obd_connect_data *ocd = &imp->imp_connect_data;
3372 if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT)
3373 osc_init_grant(&obd->u.cli, ocd);
3376 if (ocd->ocd_connect_flags & OBD_CONNECT_REQPORTAL)
3377 imp->imp_client->cli_request_portal =OST_REQUEST_PORTAL;
3379 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
3382 case IMP_EVENT_DEACTIVATE: {
3383 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DEACTIVATE, NULL);
3386 case IMP_EVENT_ACTIVATE: {
3387 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVATE, NULL);
3391 CERROR("Unknown import event %d\n", event);
3398 * Determine whether the lock can be canceled before replaying the lock
3399 * during recovery, see bug16774 for detailed information.
3401 * \retval zero the lock can't be canceled
3402 * \retval other ok to cancel
3404 static int osc_cancel_for_recovery(struct ldlm_lock *lock)
3406 check_res_locked(lock->l_resource);
3409 * Cancel all unused extent lock in granted mode LCK_PR or LCK_CR.
3411 * XXX as a future improvement, we can also cancel unused write lock
3412 * if it doesn't have dirty data and active mmaps.
3414 if (lock->l_resource->lr_type == LDLM_EXTENT &&
3415 (lock->l_granted_mode == LCK_PR ||
3416 lock->l_granted_mode == LCK_CR) &&
3417 (osc_dlm_lock_pageref(lock) == 0))
3423 static int brw_queue_work(const struct lu_env *env, void *data)
3425 struct client_obd *cli = data;
3427 CDEBUG(D_CACHE, "Run writeback work for client obd %p.\n", cli);
3429 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
3433 int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
3435 struct lprocfs_static_vars lvars = { 0 };
3436 struct client_obd *cli = &obd->u.cli;
3441 rc = ptlrpcd_addref();
3445 rc = client_obd_setup(obd, lcfg);
3447 GOTO(out_ptlrpcd, rc);
3449 handler = ptlrpcd_alloc_work(cli->cl_import, brw_queue_work, cli);
3450 if (IS_ERR(handler))
3451 GOTO(out_client_setup, rc = PTR_ERR(handler));
3452 cli->cl_writeback_work = handler;
3454 rc = osc_quota_setup(obd);
3456 GOTO(out_ptlrpcd_work, rc);
3458 cli->cl_grant_shrink_interval = GRANT_SHRINK_INTERVAL;
3459 lprocfs_osc_init_vars(&lvars);
3460 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0) {
3461 lproc_osc_attach_seqstat(obd);
3462 sptlrpc_lprocfs_cliobd_attach(obd);
3463 ptlrpc_lprocfs_register_obd(obd);
3466 /* We need to allocate a few requests more, because
3467 * brw_interpret tries to create new requests before freeing
3468 * previous ones, Ideally we want to have 2x max_rpcs_in_flight
3469 * reserved, but I'm afraid that might be too much wasted RAM
3470 * in fact, so 2 is just my guess and still should work. */
3471 cli->cl_import->imp_rq_pool =
3472 ptlrpc_init_rq_pool(cli->cl_max_rpcs_in_flight + 2,
3474 ptlrpc_add_rqs_to_pool);
3476 CFS_INIT_LIST_HEAD(&cli->cl_grant_shrink_list);
3477 ns_register_cancel(obd->obd_namespace, osc_cancel_for_recovery);
3481 ptlrpcd_destroy_work(handler);
3483 client_obd_cleanup(obd);
3489 static int osc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
3495 case OBD_CLEANUP_EARLY: {
3496 struct obd_import *imp;
3497 imp = obd->u.cli.cl_import;
3498 CDEBUG(D_HA, "Deactivating import %s\n", obd->obd_name);
3499 /* ptlrpc_abort_inflight to stop an mds_lov_synchronize */
3500 ptlrpc_deactivate_import(imp);
3501 spin_lock(&imp->imp_lock);
3502 imp->imp_pingable = 0;
3503 spin_unlock(&imp->imp_lock);
3506 case OBD_CLEANUP_EXPORTS: {
3507 struct client_obd *cli = &obd->u.cli;
3509 * for echo client, export may be on zombie list, wait for
3510 * zombie thread to cull it, because cli.cl_import will be
3511 * cleared in client_disconnect_export():
3512 * class_export_destroy() -> obd_cleanup() ->
3513 * echo_device_free() -> echo_client_cleanup() ->
3514 * obd_disconnect() -> osc_disconnect() ->
3515 * client_disconnect_export()
3517 obd_zombie_barrier();
3518 if (cli->cl_writeback_work) {
3519 ptlrpcd_destroy_work(cli->cl_writeback_work);
3520 cli->cl_writeback_work = NULL;
3522 obd_cleanup_client_import(obd);
3523 ptlrpc_lprocfs_unregister_obd(obd);
3524 lprocfs_obd_cleanup(obd);
3525 rc = obd_llog_finish(obd, 0);
3527 CERROR("failed to cleanup llogging subsystems\n");
3534 int osc_cleanup(struct obd_device *obd)
3536 struct client_obd *cli = &obd->u.cli;
3542 if (cli->cl_cache != NULL) {
3543 LASSERT(cfs_atomic_read(&cli->cl_cache->ccc_users) > 0);
3544 spin_lock(&cli->cl_cache->ccc_lru_lock);
3545 cfs_list_del_init(&cli->cl_lru_osc);
3546 spin_unlock(&cli->cl_cache->ccc_lru_lock);
3547 cli->cl_lru_left = NULL;
3548 cfs_atomic_dec(&cli->cl_cache->ccc_users);
3549 cli->cl_cache = NULL;
3552 /* free memory of osc quota cache */
3553 osc_quota_cleanup(obd);
3555 rc = client_obd_cleanup(obd);
3561 int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg)
3563 struct lprocfs_static_vars lvars = { 0 };
3566 lprocfs_osc_init_vars(&lvars);
3568 switch (lcfg->lcfg_command) {
3570 rc = class_process_proc_param(PARAM_OSC, lvars.obd_vars,
3580 static int osc_process_config(struct obd_device *obd, obd_count len, void *buf)
3582 return osc_process_config_base(obd, buf);
3585 struct obd_ops osc_obd_ops = {
3586 .o_owner = THIS_MODULE,
3587 .o_setup = osc_setup,
3588 .o_precleanup = osc_precleanup,
3589 .o_cleanup = osc_cleanup,
3590 .o_add_conn = client_import_add_conn,
3591 .o_del_conn = client_import_del_conn,
3592 .o_connect = client_connect_import,
3593 .o_reconnect = osc_reconnect,
3594 .o_disconnect = osc_disconnect,
3595 .o_statfs = osc_statfs,
3596 .o_statfs_async = osc_statfs_async,
3597 .o_packmd = osc_packmd,
3598 .o_unpackmd = osc_unpackmd,
3599 .o_create = osc_create,
3600 .o_destroy = osc_destroy,
3601 .o_getattr = osc_getattr,
3602 .o_getattr_async = osc_getattr_async,
3603 .o_setattr = osc_setattr,
3604 .o_setattr_async = osc_setattr_async,
3606 .o_punch = osc_punch,
3608 .o_enqueue = osc_enqueue,
3609 .o_change_cbdata = osc_change_cbdata,
3610 .o_find_cbdata = osc_find_cbdata,
3611 .o_cancel = osc_cancel,
3612 .o_cancel_unused = osc_cancel_unused,
3613 .o_iocontrol = osc_iocontrol,
3614 .o_get_info = osc_get_info,
3615 .o_set_info_async = osc_set_info_async,
3616 .o_import_event = osc_import_event,
3617 .o_llog_init = osc_llog_init,
3618 .o_llog_finish = osc_llog_finish,
3619 .o_process_config = osc_process_config,
3620 .o_quotactl = osc_quotactl,
3621 .o_quotacheck = osc_quotacheck,
3624 extern struct lu_kmem_descr osc_caches[];
3625 extern spinlock_t osc_ast_guard;
3626 extern struct lock_class_key osc_ast_guard_class;
3628 int __init osc_init(void)
3630 struct lprocfs_static_vars lvars = { 0 };
3634 /* print an address of _any_ initialized kernel symbol from this
3635 * module, to allow debugging with gdb that doesn't support data
3636 * symbols from modules.*/
3637 CDEBUG(D_INFO, "Lustre OSC module (%p).\n", &osc_caches);
3639 rc = lu_kmem_init(osc_caches);
3641 lprocfs_osc_init_vars(&lvars);
3643 rc = class_register_type(&osc_obd_ops, NULL, lvars.module_vars,
3644 LUSTRE_OSC_NAME, &osc_device_type);
3646 lu_kmem_fini(osc_caches);
3650 spin_lock_init(&osc_ast_guard);
3651 lockdep_set_class(&osc_ast_guard, &osc_ast_guard_class);
3657 static void /*__exit*/ osc_exit(void)
3659 class_unregister_type(LUSTRE_OSC_NAME);
3660 lu_kmem_fini(osc_caches);
3663 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3664 MODULE_DESCRIPTION("Lustre Object Storage Client (OSC)");
3665 MODULE_LICENSE("GPL");
3667 cfs_module(osc, LUSTRE_VERSION_STRING, osc_init, osc_exit);
git://git.whamcloud.com / fs / lustre-release.git / blob