4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #define DEBUG_SUBSYSTEM S_OSC
39 #include <libcfs/libcfs.h>
42 # include <liblustre.h>
45 #include <lustre_dlm.h>
46 #include <lustre_net.h>
47 #include <lustre/lustre_user.h>
48 #include <obd_cksum.h>
56 #include <lustre_ha.h>
57 #include <lprocfs_status.h>
58 #include <lustre_log.h>
59 #include <lustre_debug.h>
60 #include <lustre_param.h>
61 #include <lustre_fid.h>
62 #include "osc_internal.h"
63 #include "osc_cl_internal.h"
65 static void osc_release_ppga(struct brw_page **ppga, obd_count count);
66 static int brw_interpret(const struct lu_env *env,
67 struct ptlrpc_request *req, void *data, int rc);
68 int osc_cleanup(struct obd_device *obd);
70 /* Pack OSC object metadata for disk storage (LE byte order). */
71 static int osc_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
72 struct lov_stripe_md *lsm)
77 lmm_size = sizeof(**lmmp);
81 if (*lmmp != NULL && lsm == NULL) {
82 OBD_FREE(*lmmp, lmm_size);
85 } else if (unlikely(lsm != NULL && ostid_id(&lsm->lsm_oi) == 0)) {
90 OBD_ALLOC(*lmmp, lmm_size);
96 ostid_cpu_to_le(&lsm->lsm_oi, &(*lmmp)->lmm_oi);
101 /* Unpack OSC object metadata from disk storage (LE byte order). */
102 static int osc_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
103 struct lov_mds_md *lmm, int lmm_bytes)
106 struct obd_import *imp = class_exp2cliimp(exp);
110 if (lmm_bytes < sizeof(*lmm)) {
111 CERROR("%s: lov_mds_md too small: %d, need %d\n",
112 exp->exp_obd->obd_name, lmm_bytes,
116 /* XXX LOV_MAGIC etc check? */
118 if (unlikely(ostid_id(&lmm->lmm_oi) == 0)) {
119 CERROR("%s: zero lmm_object_id: rc = %d\n",
120 exp->exp_obd->obd_name, -EINVAL);
125 lsm_size = lov_stripe_md_size(1);
129 if (*lsmp != NULL && lmm == NULL) {
130 OBD_FREE((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
131 OBD_FREE(*lsmp, lsm_size);
137 OBD_ALLOC(*lsmp, lsm_size);
138 if (unlikely(*lsmp == NULL))
140 OBD_ALLOC((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
141 if (unlikely((*lsmp)->lsm_oinfo[0] == NULL)) {
142 OBD_FREE(*lsmp, lsm_size);
145 loi_init((*lsmp)->lsm_oinfo[0]);
146 } else if (unlikely(ostid_id(&(*lsmp)->lsm_oi) == 0)) {
151 /* XXX zero *lsmp? */
152 ostid_le_to_cpu(&lmm->lmm_oi, &(*lsmp)->lsm_oi);
155 (imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_MAXBYTES))
156 (*lsmp)->lsm_maxbytes = imp->imp_connect_data.ocd_maxbytes;
158 (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES;
163 static inline void osc_pack_capa(struct ptlrpc_request *req,
164 struct ost_body *body, void *capa)
166 struct obd_capa *oc = (struct obd_capa *)capa;
167 struct lustre_capa *c;
172 c = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1);
175 body->oa.o_valid |= OBD_MD_FLOSSCAPA;
176 DEBUG_CAPA(D_SEC, c, "pack");
179 static inline void osc_pack_req_body(struct ptlrpc_request *req,
180 struct obd_info *oinfo)
182 struct ost_body *body;
184 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
187 lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa,
189 osc_pack_capa(req, body, oinfo->oi_capa);
192 static inline void osc_set_capa_size(struct ptlrpc_request *req,
193 const struct req_msg_field *field,
197 req_capsule_set_size(&req->rq_pill, field, RCL_CLIENT, 0);
199 /* it is already calculated as sizeof struct obd_capa */
203 static int osc_getattr_interpret(const struct lu_env *env,
204 struct ptlrpc_request *req,
205 struct osc_async_args *aa, int rc)
207 struct ost_body *body;
213 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
215 CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
216 lustre_get_wire_obdo(&req->rq_import->imp_connect_data,
217 aa->aa_oi->oi_oa, &body->oa);
219 /* This should really be sent by the OST */
220 aa->aa_oi->oi_oa->o_blksize = DT_MAX_BRW_SIZE;
221 aa->aa_oi->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
223 CDEBUG(D_INFO, "can't unpack ost_body\n");
225 aa->aa_oi->oi_oa->o_valid = 0;
228 rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
232 static int osc_getattr_async(struct obd_export *exp, struct obd_info *oinfo,
233 struct ptlrpc_request_set *set)
235 struct ptlrpc_request *req;
236 struct osc_async_args *aa;
240 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
244 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
245 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
247 ptlrpc_request_free(req);
251 osc_pack_req_body(req, oinfo);
253 ptlrpc_request_set_replen(req);
254 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_getattr_interpret;
256 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
257 aa = ptlrpc_req_async_args(req);
260 ptlrpc_set_add_req(set, req);
264 static int osc_getattr(const struct lu_env *env, struct obd_export *exp,
265 struct obd_info *oinfo)
267 struct ptlrpc_request *req;
268 struct ost_body *body;
272 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
276 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
277 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
279 ptlrpc_request_free(req);
283 osc_pack_req_body(req, oinfo);
285 ptlrpc_request_set_replen(req);
287 rc = ptlrpc_queue_wait(req);
291 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
293 GOTO(out, rc = -EPROTO);
295 CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
296 lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oinfo->oi_oa,
299 oinfo->oi_oa->o_blksize = cli_brw_size(exp->exp_obd);
300 oinfo->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
304 ptlrpc_req_finished(req);
308 static int osc_setattr(const struct lu_env *env, struct obd_export *exp,
309 struct obd_info *oinfo, struct obd_trans_info *oti)
311 struct ptlrpc_request *req;
312 struct ost_body *body;
316 LASSERT(oinfo->oi_oa->o_valid & OBD_MD_FLGROUP);
318 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR);
322 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
323 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR);
325 ptlrpc_request_free(req);
329 osc_pack_req_body(req, oinfo);
331 ptlrpc_request_set_replen(req);
333 rc = ptlrpc_queue_wait(req);
337 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
339 GOTO(out, rc = -EPROTO);
341 lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oinfo->oi_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(&req->rq_import->imp_connect_data, sa->sa_oa,
367 rc = sa->sa_upcall(sa->sa_cookie, rc);
371 int osc_setattr_async_base(struct obd_export *exp, struct obd_info *oinfo,
372 struct obd_trans_info *oti,
373 obd_enqueue_update_f upcall, void *cookie,
374 struct ptlrpc_request_set *rqset)
376 struct ptlrpc_request *req;
377 struct osc_setattr_args *sa;
381 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR);
385 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
386 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR);
388 ptlrpc_request_free(req);
392 if (oti && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
393 oinfo->oi_oa->o_lcookie = *oti->oti_logcookies;
395 osc_pack_req_body(req, oinfo);
397 ptlrpc_request_set_replen(req);
399 /* do mds to ost setattr asynchronously */
401 /* Do not wait for response. */
402 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
404 req->rq_interpret_reply =
405 (ptlrpc_interpterer_t)osc_setattr_interpret;
407 CLASSERT (sizeof(*sa) <= sizeof(req->rq_async_args));
408 sa = ptlrpc_req_async_args(req);
409 sa->sa_oa = oinfo->oi_oa;
410 sa->sa_upcall = upcall;
411 sa->sa_cookie = cookie;
413 if (rqset == PTLRPCD_SET)
414 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
416 ptlrpc_set_add_req(rqset, req);
422 static int osc_setattr_async(struct obd_export *exp, struct obd_info *oinfo,
423 struct obd_trans_info *oti,
424 struct ptlrpc_request_set *rqset)
426 return osc_setattr_async_base(exp, oinfo, oti,
427 oinfo->oi_cb_up, oinfo, rqset);
430 int osc_real_create(struct obd_export *exp, struct obdo *oa,
431 struct lov_stripe_md **ea, struct obd_trans_info *oti)
433 struct ptlrpc_request *req;
434 struct ost_body *body;
435 struct lov_stripe_md *lsm;
444 rc = obd_alloc_memmd(exp, &lsm);
449 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_CREATE);
451 GOTO(out, rc = -ENOMEM);
453 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_CREATE);
455 ptlrpc_request_free(req);
459 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
462 lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
464 ptlrpc_request_set_replen(req);
466 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
467 oa->o_flags == OBD_FL_DELORPHAN) {
469 "delorphan from OST integration");
470 /* Don't resend the delorphan req */
471 req->rq_no_resend = req->rq_no_delay = 1;
474 rc = ptlrpc_queue_wait(req);
478 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
480 GOTO(out_req, rc = -EPROTO);
482 CDEBUG(D_INFO, "oa flags %x\n", oa->o_flags);
483 lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oa, &body->oa);
485 oa->o_blksize = cli_brw_size(exp->exp_obd);
486 oa->o_valid |= OBD_MD_FLBLKSZ;
488 /* XXX LOV STACKING: the lsm that is passed to us from LOV does not
489 * have valid lsm_oinfo data structs, so don't go touching that.
490 * This needs to be fixed in a big way.
492 lsm->lsm_oi = oa->o_oi;
496 oti->oti_transno = lustre_msg_get_transno(req->rq_repmsg);
498 if (oa->o_valid & OBD_MD_FLCOOKIE) {
499 if (!oti->oti_logcookies)
500 oti_alloc_cookies(oti, 1);
501 *oti->oti_logcookies = oa->o_lcookie;
505 CDEBUG(D_HA, "transno: "LPD64"\n",
506 lustre_msg_get_transno(req->rq_repmsg));
508 ptlrpc_req_finished(req);
511 obd_free_memmd(exp, &lsm);
515 int osc_punch_base(struct obd_export *exp, struct obd_info *oinfo,
516 obd_enqueue_update_f upcall, void *cookie,
517 struct ptlrpc_request_set *rqset)
519 struct ptlrpc_request *req;
520 struct osc_setattr_args *sa;
521 struct ost_body *body;
525 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_PUNCH);
529 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
530 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_PUNCH);
532 ptlrpc_request_free(req);
535 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
536 ptlrpc_at_set_req_timeout(req);
538 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
540 lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa,
542 osc_pack_capa(req, body, oinfo->oi_capa);
544 ptlrpc_request_set_replen(req);
546 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_setattr_interpret;
547 CLASSERT (sizeof(*sa) <= sizeof(req->rq_async_args));
548 sa = ptlrpc_req_async_args(req);
549 sa->sa_oa = oinfo->oi_oa;
550 sa->sa_upcall = upcall;
551 sa->sa_cookie = cookie;
552 if (rqset == PTLRPCD_SET)
553 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
555 ptlrpc_set_add_req(rqset, req);
560 static int osc_punch(const struct lu_env *env, struct obd_export *exp,
561 struct obd_info *oinfo, struct obd_trans_info *oti,
562 struct ptlrpc_request_set *rqset)
564 oinfo->oi_oa->o_size = oinfo->oi_policy.l_extent.start;
565 oinfo->oi_oa->o_blocks = oinfo->oi_policy.l_extent.end;
566 oinfo->oi_oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
567 return osc_punch_base(exp, oinfo,
568 oinfo->oi_cb_up, oinfo, rqset);
571 static int osc_sync_interpret(const struct lu_env *env,
572 struct ptlrpc_request *req,
575 struct osc_fsync_args *fa = arg;
576 struct ost_body *body;
582 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
584 CERROR ("can't unpack ost_body\n");
585 GOTO(out, rc = -EPROTO);
588 *fa->fa_oi->oi_oa = body->oa;
590 rc = fa->fa_upcall(fa->fa_cookie, rc);
594 int osc_sync_base(struct obd_export *exp, struct obd_info *oinfo,
595 obd_enqueue_update_f upcall, void *cookie,
596 struct ptlrpc_request_set *rqset)
598 struct ptlrpc_request *req;
599 struct ost_body *body;
600 struct osc_fsync_args *fa;
604 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SYNC);
608 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
609 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SYNC);
611 ptlrpc_request_free(req);
615 /* overload the size and blocks fields in the oa with start/end */
616 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
618 lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa,
620 osc_pack_capa(req, body, oinfo->oi_capa);
622 ptlrpc_request_set_replen(req);
623 req->rq_interpret_reply = osc_sync_interpret;
625 CLASSERT(sizeof(*fa) <= sizeof(req->rq_async_args));
626 fa = ptlrpc_req_async_args(req);
628 fa->fa_upcall = upcall;
629 fa->fa_cookie = cookie;
631 if (rqset == PTLRPCD_SET)
632 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
634 ptlrpc_set_add_req(rqset, req);
639 static int osc_sync(const struct lu_env *env, struct obd_export *exp,
640 struct obd_info *oinfo, obd_size start, obd_size end,
641 struct ptlrpc_request_set *set)
646 CDEBUG(D_INFO, "oa NULL\n");
650 oinfo->oi_oa->o_size = start;
651 oinfo->oi_oa->o_blocks = end;
652 oinfo->oi_oa->o_valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS);
654 RETURN(osc_sync_base(exp, oinfo, oinfo->oi_cb_up, oinfo, set));
657 /* Find and cancel locally locks matched by @mode in the resource found by
658 * @objid. Found locks are added into @cancel list. Returns the amount of
659 * locks added to @cancels list. */
660 static int osc_resource_get_unused(struct obd_export *exp, struct obdo *oa,
662 ldlm_mode_t mode, __u64 lock_flags)
664 struct ldlm_namespace *ns = exp->exp_obd->obd_namespace;
665 struct ldlm_res_id res_id;
666 struct ldlm_resource *res;
670 /* Return, i.e. cancel nothing, only if ELC is supported (flag in
671 * export) but disabled through procfs (flag in NS).
673 * This distinguishes from a case when ELC is not supported originally,
674 * when we still want to cancel locks in advance and just cancel them
675 * locally, without sending any RPC. */
676 if (exp_connect_cancelset(exp) && !ns_connect_cancelset(ns))
679 ostid_build_res_name(&oa->o_oi, &res_id);
680 res = ldlm_resource_get(ns, NULL, &res_id, 0, 0);
684 LDLM_RESOURCE_ADDREF(res);
685 count = ldlm_cancel_resource_local(res, cancels, NULL, mode,
686 lock_flags, 0, NULL);
687 LDLM_RESOURCE_DELREF(res);
688 ldlm_resource_putref(res);
692 static int osc_destroy_interpret(const struct lu_env *env,
693 struct ptlrpc_request *req, void *data,
696 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
698 cfs_atomic_dec(&cli->cl_destroy_in_flight);
699 wake_up(&cli->cl_destroy_waitq);
703 static int osc_can_send_destroy(struct client_obd *cli)
705 if (cfs_atomic_inc_return(&cli->cl_destroy_in_flight) <=
706 cli->cl_max_rpcs_in_flight) {
707 /* The destroy request can be sent */
710 if (cfs_atomic_dec_return(&cli->cl_destroy_in_flight) <
711 cli->cl_max_rpcs_in_flight) {
713 * The counter has been modified between the two atomic
716 wake_up(&cli->cl_destroy_waitq);
721 int osc_create(const struct lu_env *env, struct obd_export *exp,
722 struct obdo *oa, struct lov_stripe_md **ea,
723 struct obd_trans_info *oti)
730 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
732 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
733 oa->o_flags == OBD_FL_RECREATE_OBJS) {
734 RETURN(osc_real_create(exp, oa, ea, oti));
737 if (!fid_seq_is_mdt(ostid_seq(&oa->o_oi)))
738 RETURN(osc_real_create(exp, oa, ea, oti));
740 /* we should not get here anymore */
746 /* Destroy requests can be async always on the client, and we don't even really
747 * care about the return code since the client cannot do anything at all about
749 * When the MDS is unlinking a filename, it saves the file objects into a
750 * recovery llog, and these object records are cancelled when the OST reports
751 * they were destroyed and sync'd to disk (i.e. transaction committed).
752 * If the client dies, or the OST is down when the object should be destroyed,
753 * the records are not cancelled, and when the OST reconnects to the MDS next,
754 * it will retrieve the llog unlink logs and then sends the log cancellation
755 * cookies to the MDS after committing destroy transactions. */
756 static int osc_destroy(const struct lu_env *env, struct obd_export *exp,
757 struct obdo *oa, struct lov_stripe_md *ea,
758 struct obd_trans_info *oti, struct obd_export *md_export,
761 struct client_obd *cli = &exp->exp_obd->u.cli;
762 struct ptlrpc_request *req;
763 struct ost_body *body;
764 CFS_LIST_HEAD(cancels);
769 CDEBUG(D_INFO, "oa NULL\n");
773 count = osc_resource_get_unused(exp, oa, &cancels, LCK_PW,
774 LDLM_FL_DISCARD_DATA);
776 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_DESTROY);
778 ldlm_lock_list_put(&cancels, l_bl_ast, count);
782 osc_set_capa_size(req, &RMF_CAPA1, (struct obd_capa *)capa);
783 rc = ldlm_prep_elc_req(exp, req, LUSTRE_OST_VERSION, OST_DESTROY,
786 ptlrpc_request_free(req);
790 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
791 ptlrpc_at_set_req_timeout(req);
793 if (oti != NULL && oa->o_valid & OBD_MD_FLCOOKIE)
794 oa->o_lcookie = *oti->oti_logcookies;
795 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
797 lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
799 osc_pack_capa(req, body, (struct obd_capa *)capa);
800 ptlrpc_request_set_replen(req);
802 /* If osc_destory is for destroying the unlink orphan,
803 * sent from MDT to OST, which should not be blocked here,
804 * because the process might be triggered by ptlrpcd, and
805 * it is not good to block ptlrpcd thread (b=16006)*/
806 if (!(oa->o_flags & OBD_FL_DELORPHAN)) {
807 req->rq_interpret_reply = osc_destroy_interpret;
808 if (!osc_can_send_destroy(cli)) {
809 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP,
813 * Wait until the number of on-going destroy RPCs drops
814 * under max_rpc_in_flight
816 l_wait_event_exclusive(cli->cl_destroy_waitq,
817 osc_can_send_destroy(cli), &lwi);
821 /* Do not wait for response */
822 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
826 static void osc_announce_cached(struct client_obd *cli, struct obdo *oa,
829 obd_flag bits = OBD_MD_FLBLOCKS|OBD_MD_FLGRANT;
831 LASSERT(!(oa->o_valid & bits));
834 client_obd_list_lock(&cli->cl_loi_list_lock);
835 oa->o_dirty = cli->cl_dirty;
836 if (unlikely(cli->cl_dirty - cli->cl_dirty_transit >
837 cli->cl_dirty_max)) {
838 CERROR("dirty %lu - %lu > dirty_max %lu\n",
839 cli->cl_dirty, cli->cl_dirty_transit, cli->cl_dirty_max);
841 } else if (unlikely(cfs_atomic_read(&obd_unstable_pages) +
842 cfs_atomic_read(&obd_dirty_pages) -
843 cfs_atomic_read(&obd_dirty_transit_pages) >
844 (long)(obd_max_dirty_pages + 1))) {
845 /* The cfs_atomic_read() allowing the cfs_atomic_inc() are
846 * not covered by a lock thus they may safely race and trip
847 * this CERROR() unless we add in a small fudge factor (+1). */
848 CERROR("%s: dirty %d + %d - %d > system dirty_max %d\n",
849 cli->cl_import->imp_obd->obd_name,
850 cfs_atomic_read(&obd_unstable_pages),
851 cfs_atomic_read(&obd_dirty_pages),
852 cfs_atomic_read(&obd_dirty_transit_pages),
853 obd_max_dirty_pages);
855 } else if (unlikely(cli->cl_dirty_max - cli->cl_dirty > 0x7fffffff)) {
856 CERROR("dirty %lu - dirty_max %lu too big???\n",
857 cli->cl_dirty, cli->cl_dirty_max);
860 long max_in_flight = (cli->cl_max_pages_per_rpc <<
862 (cli->cl_max_rpcs_in_flight + 1);
863 oa->o_undirty = max(cli->cl_dirty_max, max_in_flight);
865 oa->o_grant = cli->cl_avail_grant + cli->cl_reserved_grant;
866 oa->o_dropped = cli->cl_lost_grant;
867 cli->cl_lost_grant = 0;
868 client_obd_list_unlock(&cli->cl_loi_list_lock);
869 CDEBUG(D_CACHE,"dirty: "LPU64" undirty: %u dropped %u grant: "LPU64"\n",
870 oa->o_dirty, oa->o_undirty, oa->o_dropped, oa->o_grant);
874 void osc_update_next_shrink(struct client_obd *cli)
876 cli->cl_next_shrink_grant =
877 cfs_time_shift(cli->cl_grant_shrink_interval);
878 CDEBUG(D_CACHE, "next time %ld to shrink grant \n",
879 cli->cl_next_shrink_grant);
882 static void __osc_update_grant(struct client_obd *cli, obd_size grant)
884 client_obd_list_lock(&cli->cl_loi_list_lock);
885 cli->cl_avail_grant += grant;
886 client_obd_list_unlock(&cli->cl_loi_list_lock);
889 static void osc_update_grant(struct client_obd *cli, struct ost_body *body)
891 if (body->oa.o_valid & OBD_MD_FLGRANT) {
892 CDEBUG(D_CACHE, "got "LPU64" extra grant\n", body->oa.o_grant);
893 __osc_update_grant(cli, body->oa.o_grant);
897 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
898 obd_count keylen, void *key, obd_count vallen,
899 void *val, struct ptlrpc_request_set *set);
901 static int osc_shrink_grant_interpret(const struct lu_env *env,
902 struct ptlrpc_request *req,
905 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
906 struct obdo *oa = ((struct osc_grant_args *)aa)->aa_oa;
907 struct ost_body *body;
910 __osc_update_grant(cli, oa->o_grant);
914 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
916 osc_update_grant(cli, body);
922 static void osc_shrink_grant_local(struct client_obd *cli, struct obdo *oa)
924 client_obd_list_lock(&cli->cl_loi_list_lock);
925 oa->o_grant = cli->cl_avail_grant / 4;
926 cli->cl_avail_grant -= oa->o_grant;
927 client_obd_list_unlock(&cli->cl_loi_list_lock);
928 if (!(oa->o_valid & OBD_MD_FLFLAGS)) {
929 oa->o_valid |= OBD_MD_FLFLAGS;
932 oa->o_flags |= OBD_FL_SHRINK_GRANT;
933 osc_update_next_shrink(cli);
936 /* Shrink the current grant, either from some large amount to enough for a
937 * full set of in-flight RPCs, or if we have already shrunk to that limit
938 * then to enough for a single RPC. This avoids keeping more grant than
939 * needed, and avoids shrinking the grant piecemeal. */
940 static int osc_shrink_grant(struct client_obd *cli)
942 __u64 target_bytes = (cli->cl_max_rpcs_in_flight + 1) *
943 (cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT);
945 client_obd_list_lock(&cli->cl_loi_list_lock);
946 if (cli->cl_avail_grant <= target_bytes)
947 target_bytes = cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT;
948 client_obd_list_unlock(&cli->cl_loi_list_lock);
950 return osc_shrink_grant_to_target(cli, target_bytes);
953 int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes)
956 struct ost_body *body;
959 client_obd_list_lock(&cli->cl_loi_list_lock);
960 /* Don't shrink if we are already above or below the desired limit
961 * We don't want to shrink below a single RPC, as that will negatively
962 * impact block allocation and long-term performance. */
963 if (target_bytes < cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT)
964 target_bytes = cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT;
966 if (target_bytes >= cli->cl_avail_grant) {
967 client_obd_list_unlock(&cli->cl_loi_list_lock);
970 client_obd_list_unlock(&cli->cl_loi_list_lock);
976 osc_announce_cached(cli, &body->oa, 0);
978 client_obd_list_lock(&cli->cl_loi_list_lock);
979 body->oa.o_grant = cli->cl_avail_grant - target_bytes;
980 cli->cl_avail_grant = target_bytes;
981 client_obd_list_unlock(&cli->cl_loi_list_lock);
982 if (!(body->oa.o_valid & OBD_MD_FLFLAGS)) {
983 body->oa.o_valid |= OBD_MD_FLFLAGS;
984 body->oa.o_flags = 0;
986 body->oa.o_flags |= OBD_FL_SHRINK_GRANT;
987 osc_update_next_shrink(cli);
989 rc = osc_set_info_async(NULL, cli->cl_import->imp_obd->obd_self_export,
990 sizeof(KEY_GRANT_SHRINK), KEY_GRANT_SHRINK,
991 sizeof(*body), body, NULL);
993 __osc_update_grant(cli, body->oa.o_grant);
998 static int osc_should_shrink_grant(struct client_obd *client)
1000 cfs_time_t time = cfs_time_current();
1001 cfs_time_t next_shrink = client->cl_next_shrink_grant;
1003 if ((client->cl_import->imp_connect_data.ocd_connect_flags &
1004 OBD_CONNECT_GRANT_SHRINK) == 0)
1007 if (cfs_time_aftereq(time, next_shrink - 5 * CFS_TICK)) {
1008 /* Get the current RPC size directly, instead of going via:
1009 * cli_brw_size(obd->u.cli.cl_import->imp_obd->obd_self_export)
1010 * Keep comment here so that it can be found by searching. */
1011 int brw_size = client->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT;
1013 if (client->cl_import->imp_state == LUSTRE_IMP_FULL &&
1014 client->cl_avail_grant > brw_size)
1017 osc_update_next_shrink(client);
1022 static int osc_grant_shrink_grant_cb(struct timeout_item *item, void *data)
1024 struct client_obd *client;
1026 cfs_list_for_each_entry(client, &item->ti_obd_list,
1027 cl_grant_shrink_list) {
1028 if (osc_should_shrink_grant(client))
1029 osc_shrink_grant(client);
1034 static int osc_add_shrink_grant(struct client_obd *client)
1038 rc = ptlrpc_add_timeout_client(client->cl_grant_shrink_interval,
1040 osc_grant_shrink_grant_cb, NULL,
1041 &client->cl_grant_shrink_list);
1043 CERROR("add grant client %s error %d\n",
1044 client->cl_import->imp_obd->obd_name, rc);
1047 CDEBUG(D_CACHE, "add grant client %s \n",
1048 client->cl_import->imp_obd->obd_name);
1049 osc_update_next_shrink(client);
1053 static int osc_del_shrink_grant(struct client_obd *client)
1055 return ptlrpc_del_timeout_client(&client->cl_grant_shrink_list,
1059 static void osc_init_grant(struct client_obd *cli, struct obd_connect_data *ocd)
1062 * ocd_grant is the total grant amount we're expect to hold: if we've
1063 * been evicted, it's the new avail_grant amount, cl_dirty will drop
1064 * to 0 as inflight RPCs fail out; otherwise, it's avail_grant + dirty.
1066 * race is tolerable here: if we're evicted, but imp_state already
1067 * left EVICTED state, then cl_dirty must be 0 already.
1069 client_obd_list_lock(&cli->cl_loi_list_lock);
1070 if (cli->cl_import->imp_state == LUSTRE_IMP_EVICTED)
1071 cli->cl_avail_grant = ocd->ocd_grant;
1073 cli->cl_avail_grant = ocd->ocd_grant - cli->cl_dirty;
1075 if (cli->cl_avail_grant < 0) {
1076 CWARN("%s: available grant < 0: avail/ocd/dirty %ld/%u/%ld\n",
1077 cli->cl_import->imp_obd->obd_name, cli->cl_avail_grant,
1078 ocd->ocd_grant, cli->cl_dirty);
1079 /* workaround for servers which do not have the patch from
1081 cli->cl_avail_grant = ocd->ocd_grant;
1084 /* determine the appropriate chunk size used by osc_extent. */
1085 cli->cl_chunkbits = max_t(int, PAGE_CACHE_SHIFT, ocd->ocd_blocksize);
1086 client_obd_list_unlock(&cli->cl_loi_list_lock);
1088 CDEBUG(D_CACHE, "%s, setting cl_avail_grant: %ld cl_lost_grant: %ld."
1089 "chunk bits: %d.\n", cli->cl_import->imp_obd->obd_name,
1090 cli->cl_avail_grant, cli->cl_lost_grant, cli->cl_chunkbits);
1092 if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT_SHRINK &&
1093 cfs_list_empty(&cli->cl_grant_shrink_list))
1094 osc_add_shrink_grant(cli);
1097 /* We assume that the reason this OSC got a short read is because it read
1098 * beyond the end of a stripe file; i.e. lustre is reading a sparse file
1099 * via the LOV, and it _knows_ it's reading inside the file, it's just that
1100 * this stripe never got written at or beyond this stripe offset yet. */
1101 static void handle_short_read(int nob_read, obd_count page_count,
1102 struct brw_page **pga)
1107 /* skip bytes read OK */
1108 while (nob_read > 0) {
1109 LASSERT (page_count > 0);
1111 if (pga[i]->count > nob_read) {
1112 /* EOF inside this page */
1113 ptr = kmap(pga[i]->pg) +
1114 (pga[i]->off & ~CFS_PAGE_MASK);
1115 memset(ptr + nob_read, 0, pga[i]->count - nob_read);
1122 nob_read -= pga[i]->count;
1127 /* zero remaining pages */
1128 while (page_count-- > 0) {
1129 ptr = kmap(pga[i]->pg) + (pga[i]->off & ~CFS_PAGE_MASK);
1130 memset(ptr, 0, pga[i]->count);
1136 static int check_write_rcs(struct ptlrpc_request *req,
1137 int requested_nob, int niocount,
1138 obd_count page_count, struct brw_page **pga)
1143 remote_rcs = req_capsule_server_sized_get(&req->rq_pill, &RMF_RCS,
1144 sizeof(*remote_rcs) *
1146 if (remote_rcs == NULL) {
1147 CDEBUG(D_INFO, "Missing/short RC vector on BRW_WRITE reply\n");
1151 /* return error if any niobuf was in error */
1152 for (i = 0; i < niocount; i++) {
1153 if ((int)remote_rcs[i] < 0)
1154 return(remote_rcs[i]);
1156 if (remote_rcs[i] != 0) {
1157 CDEBUG(D_INFO, "rc[%d] invalid (%d) req %p\n",
1158 i, remote_rcs[i], req);
1163 if (req->rq_bulk->bd_nob_transferred != requested_nob) {
1164 CERROR("Unexpected # bytes transferred: %d (requested %d)\n",
1165 req->rq_bulk->bd_nob_transferred, requested_nob);
1172 static inline int can_merge_pages(struct brw_page *p1, struct brw_page *p2)
1174 if (p1->flag != p2->flag) {
1175 unsigned mask = ~(OBD_BRW_FROM_GRANT | OBD_BRW_NOCACHE |
1176 OBD_BRW_SYNC | OBD_BRW_ASYNC |
1177 OBD_BRW_NOQUOTA | OBD_BRW_SOFT_SYNC);
1179 /* warn if we try to combine flags that we don't know to be
1180 * safe to combine */
1181 if (unlikely((p1->flag & mask) != (p2->flag & mask))) {
1182 CWARN("Saw flags 0x%x and 0x%x in the same brw, please "
1183 "report this at http://bugs.whamcloud.com/\n",
1184 p1->flag, p2->flag);
1189 return (p1->off + p1->count == p2->off);
1192 static obd_count osc_checksum_bulk(int nob, obd_count pg_count,
1193 struct brw_page **pga, int opc,
1194 cksum_type_t cksum_type)
1198 struct cfs_crypto_hash_desc *hdesc;
1199 unsigned int bufsize;
1201 unsigned char cfs_alg = cksum_obd2cfs(cksum_type);
1203 LASSERT(pg_count > 0);
1205 hdesc = cfs_crypto_hash_init(cfs_alg, NULL, 0);
1206 if (IS_ERR(hdesc)) {
1207 CERROR("Unable to initialize checksum hash %s\n",
1208 cfs_crypto_hash_name(cfs_alg));
1209 return PTR_ERR(hdesc);
1212 while (nob > 0 && pg_count > 0) {
1213 int count = pga[i]->count > nob ? nob : pga[i]->count;
1215 /* corrupt the data before we compute the checksum, to
1216 * simulate an OST->client data error */
1217 if (i == 0 && opc == OST_READ &&
1218 OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_RECEIVE)) {
1219 unsigned char *ptr = kmap(pga[i]->pg);
1220 int off = pga[i]->off & ~CFS_PAGE_MASK;
1221 memcpy(ptr + off, "bad1", min(4, nob));
1224 cfs_crypto_hash_update_page(hdesc, pga[i]->pg,
1225 pga[i]->off & ~CFS_PAGE_MASK,
1227 LL_CDEBUG_PAGE(D_PAGE, pga[i]->pg, "off %d\n",
1228 (int)(pga[i]->off & ~CFS_PAGE_MASK));
1230 nob -= pga[i]->count;
1236 err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize);
1239 cfs_crypto_hash_final(hdesc, NULL, NULL);
1241 /* For sending we only compute the wrong checksum instead
1242 * of corrupting the data so it is still correct on a redo */
1243 if (opc == OST_WRITE && OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_SEND))
1249 static int osc_brw_prep_request(int cmd, struct client_obd *cli,struct obdo *oa,
1250 struct lov_stripe_md *lsm, obd_count page_count,
1251 struct brw_page **pga,
1252 struct ptlrpc_request **reqp,
1253 struct obd_capa *ocapa, int reserve,
1256 struct ptlrpc_request *req;
1257 struct ptlrpc_bulk_desc *desc;
1258 struct ost_body *body;
1259 struct obd_ioobj *ioobj;
1260 struct niobuf_remote *niobuf;
1261 int niocount, i, requested_nob, opc, rc;
1262 struct osc_brw_async_args *aa;
1263 struct req_capsule *pill;
1264 struct brw_page *pg_prev;
1267 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ))
1268 RETURN(-ENOMEM); /* Recoverable */
1269 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ2))
1270 RETURN(-EINVAL); /* Fatal */
1272 if ((cmd & OBD_BRW_WRITE) != 0) {
1274 req = ptlrpc_request_alloc_pool(cli->cl_import,
1275 cli->cl_import->imp_rq_pool,
1276 &RQF_OST_BRW_WRITE);
1279 req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_BRW_READ);
1284 for (niocount = i = 1; i < page_count; i++) {
1285 if (!can_merge_pages(pga[i - 1], pga[i]))
1289 pill = &req->rq_pill;
1290 req_capsule_set_size(pill, &RMF_OBD_IOOBJ, RCL_CLIENT,
1292 req_capsule_set_size(pill, &RMF_NIOBUF_REMOTE, RCL_CLIENT,
1293 niocount * sizeof(*niobuf));
1294 osc_set_capa_size(req, &RMF_CAPA1, ocapa);
1296 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, opc);
1298 ptlrpc_request_free(req);
1301 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
1302 ptlrpc_at_set_req_timeout(req);
1303 /* ask ptlrpc not to resend on EINPROGRESS since BRWs have their own
1305 req->rq_no_retry_einprogress = 1;
1307 desc = ptlrpc_prep_bulk_imp(req, page_count,
1308 cli->cl_import->imp_connect_data.ocd_brw_size >> LNET_MTU_BITS,
1309 opc == OST_WRITE ? BULK_GET_SOURCE : BULK_PUT_SINK,
1313 GOTO(out, rc = -ENOMEM);
1314 /* NB request now owns desc and will free it when it gets freed */
1316 body = req_capsule_client_get(pill, &RMF_OST_BODY);
1317 ioobj = req_capsule_client_get(pill, &RMF_OBD_IOOBJ);
1318 niobuf = req_capsule_client_get(pill, &RMF_NIOBUF_REMOTE);
1319 LASSERT(body != NULL && ioobj != NULL && niobuf != NULL);
1321 lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
1323 obdo_to_ioobj(oa, ioobj);
1324 ioobj->ioo_bufcnt = niocount;
1325 /* The high bits of ioo_max_brw tells server _maximum_ number of bulks
1326 * that might be send for this request. The actual number is decided
1327 * when the RPC is finally sent in ptlrpc_register_bulk(). It sends
1328 * "max - 1" for old client compatibility sending "0", and also so the
1329 * the actual maximum is a power-of-two number, not one less. LU-1431 */
1330 ioobj_max_brw_set(ioobj, desc->bd_md_max_brw);
1331 osc_pack_capa(req, body, ocapa);
1332 LASSERT(page_count > 0);
1334 for (requested_nob = i = 0; i < page_count; i++, niobuf++) {
1335 struct brw_page *pg = pga[i];
1336 int poff = pg->off & ~CFS_PAGE_MASK;
1338 LASSERT(pg->count > 0);
1339 /* make sure there is no gap in the middle of page array */
1340 LASSERTF(page_count == 1 ||
1341 (ergo(i == 0, poff + pg->count == PAGE_CACHE_SIZE) &&
1342 ergo(i > 0 && i < page_count - 1,
1343 poff == 0 && pg->count == PAGE_CACHE_SIZE) &&
1344 ergo(i == page_count - 1, poff == 0)),
1345 "i: %d/%d pg: %p off: "LPU64", count: %u\n",
1346 i, page_count, pg, pg->off, pg->count);
1348 LASSERTF(i == 0 || pg->off > pg_prev->off,
1349 "i %d p_c %u pg %p [pri %lu ind %lu] off "LPU64
1350 " prev_pg %p [pri %lu ind %lu] off "LPU64"\n",
1352 pg->pg, page_private(pg->pg), pg->pg->index, pg->off,
1353 pg_prev->pg, page_private(pg_prev->pg),
1354 pg_prev->pg->index, pg_prev->off);
1356 LASSERTF(i == 0 || pg->off > pg_prev->off,
1357 "i %d p_c %u\n", i, page_count);
1359 LASSERT((pga[0]->flag & OBD_BRW_SRVLOCK) ==
1360 (pg->flag & OBD_BRW_SRVLOCK));
1362 ptlrpc_prep_bulk_page_pin(desc, pg->pg, poff, pg->count);
1363 requested_nob += pg->count;
1365 if (i > 0 && can_merge_pages(pg_prev, pg)) {
1367 niobuf->len += pg->count;
1369 niobuf->offset = pg->off;
1370 niobuf->len = pg->count;
1371 niobuf->flags = pg->flag;
1376 LASSERTF((void *)(niobuf - niocount) ==
1377 req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE),
1378 "want %p - real %p\n", req_capsule_client_get(&req->rq_pill,
1379 &RMF_NIOBUF_REMOTE), (void *)(niobuf - niocount));
1381 osc_announce_cached(cli, &body->oa, opc == OST_WRITE ? requested_nob:0);
1383 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
1384 body->oa.o_valid |= OBD_MD_FLFLAGS;
1385 body->oa.o_flags = 0;
1387 body->oa.o_flags |= OBD_FL_RECOV_RESEND;
1390 if (osc_should_shrink_grant(cli))
1391 osc_shrink_grant_local(cli, &body->oa);
1393 /* size[REQ_REC_OFF] still sizeof (*body) */
1394 if (opc == OST_WRITE) {
1395 if (cli->cl_checksum &&
1396 !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
1397 /* store cl_cksum_type in a local variable since
1398 * it can be changed via lprocfs */
1399 cksum_type_t cksum_type = cli->cl_cksum_type;
1401 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
1402 oa->o_flags &= OBD_FL_LOCAL_MASK;
1403 body->oa.o_flags = 0;
1405 body->oa.o_flags |= cksum_type_pack(cksum_type);
1406 body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1407 body->oa.o_cksum = osc_checksum_bulk(requested_nob,
1411 CDEBUG(D_PAGE, "checksum at write origin: %x\n",
1413 /* save this in 'oa', too, for later checking */
1414 oa->o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1415 oa->o_flags |= cksum_type_pack(cksum_type);
1417 /* clear out the checksum flag, in case this is a
1418 * resend but cl_checksum is no longer set. b=11238 */
1419 oa->o_valid &= ~OBD_MD_FLCKSUM;
1421 oa->o_cksum = body->oa.o_cksum;
1422 /* 1 RC per niobuf */
1423 req_capsule_set_size(pill, &RMF_RCS, RCL_SERVER,
1424 sizeof(__u32) * niocount);
1426 if (cli->cl_checksum &&
1427 !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
1428 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0)
1429 body->oa.o_flags = 0;
1430 body->oa.o_flags |= cksum_type_pack(cli->cl_cksum_type);
1431 body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1434 ptlrpc_request_set_replen(req);
1436 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
1437 aa = ptlrpc_req_async_args(req);
1439 aa->aa_requested_nob = requested_nob;
1440 aa->aa_nio_count = niocount;
1441 aa->aa_page_count = page_count;
1445 CFS_INIT_LIST_HEAD(&aa->aa_oaps);
1446 if (ocapa && reserve)
1447 aa->aa_ocapa = capa_get(ocapa);
1453 ptlrpc_req_finished(req);
1457 static int check_write_checksum(struct obdo *oa, const lnet_process_id_t *peer,
1458 __u32 client_cksum, __u32 server_cksum, int nob,
1459 obd_count page_count, struct brw_page **pga,
1460 cksum_type_t client_cksum_type)
1464 cksum_type_t cksum_type;
1466 if (server_cksum == client_cksum) {
1467 CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
1471 cksum_type = cksum_type_unpack(oa->o_valid & OBD_MD_FLFLAGS ?
1473 new_cksum = osc_checksum_bulk(nob, page_count, pga, OST_WRITE,
1476 if (cksum_type != client_cksum_type)
1477 msg = "the server did not use the checksum type specified in "
1478 "the original request - likely a protocol problem";
1479 else if (new_cksum == server_cksum)
1480 msg = "changed on the client after we checksummed it - "
1481 "likely false positive due to mmap IO (bug 11742)";
1482 else if (new_cksum == client_cksum)
1483 msg = "changed in transit before arrival at OST";
1485 msg = "changed in transit AND doesn't match the original - "
1486 "likely false positive due to mmap IO (bug 11742)";
1488 LCONSOLE_ERROR_MSG(0x132, "BAD WRITE CHECKSUM: %s: from %s inode "DFID
1489 " object "DOSTID" extent ["LPU64"-"LPU64"]\n",
1490 msg, libcfs_nid2str(peer->nid),
1491 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : (__u64)0,
1492 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0,
1493 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0,
1494 POSTID(&oa->o_oi), pga[0]->off,
1495 pga[page_count-1]->off + pga[page_count-1]->count - 1);
1496 CERROR("original client csum %x (type %x), server csum %x (type %x), "
1497 "client csum now %x\n", client_cksum, client_cksum_type,
1498 server_cksum, cksum_type, new_cksum);
1502 /* Note rc enters this function as number of bytes transferred */
1503 static int osc_brw_fini_request(struct ptlrpc_request *req, int rc)
1505 struct osc_brw_async_args *aa = (void *)&req->rq_async_args;
1506 const lnet_process_id_t *peer =
1507 &req->rq_import->imp_connection->c_peer;
1508 struct client_obd *cli = aa->aa_cli;
1509 struct ost_body *body;
1510 __u32 client_cksum = 0;
1513 if (rc < 0 && rc != -EDQUOT) {
1514 DEBUG_REQ(D_INFO, req, "Failed request with rc = %d\n", rc);
1518 LASSERTF(req->rq_repmsg != NULL, "rc = %d\n", rc);
1519 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
1521 DEBUG_REQ(D_INFO, req, "Can't unpack body\n");
1525 /* set/clear over quota flag for a uid/gid */
1526 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE &&
1527 body->oa.o_valid & (OBD_MD_FLUSRQUOTA | OBD_MD_FLGRPQUOTA)) {
1528 unsigned int qid[MAXQUOTAS] = { body->oa.o_uid, body->oa.o_gid };
1530 CDEBUG(D_QUOTA, "setdq for [%u %u] with valid "LPX64", flags %x\n",
1531 body->oa.o_uid, body->oa.o_gid, body->oa.o_valid,
1533 osc_quota_setdq(cli, qid, body->oa.o_valid, body->oa.o_flags);
1536 osc_update_grant(cli, body);
1541 if (aa->aa_oa->o_valid & OBD_MD_FLCKSUM)
1542 client_cksum = aa->aa_oa->o_cksum; /* save for later */
1544 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) {
1546 CERROR("Unexpected +ve rc %d\n", rc);
1549 LASSERT(req->rq_bulk->bd_nob == aa->aa_requested_nob);
1551 if (sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk))
1554 if ((aa->aa_oa->o_valid & OBD_MD_FLCKSUM) && client_cksum &&
1555 check_write_checksum(&body->oa, peer, client_cksum,
1556 body->oa.o_cksum, aa->aa_requested_nob,
1557 aa->aa_page_count, aa->aa_ppga,
1558 cksum_type_unpack(aa->aa_oa->o_flags)))
1561 rc = check_write_rcs(req, aa->aa_requested_nob,aa->aa_nio_count,
1562 aa->aa_page_count, aa->aa_ppga);
1566 /* The rest of this function executes only for OST_READs */
1568 /* if unwrap_bulk failed, return -EAGAIN to retry */
1569 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk, rc);
1571 GOTO(out, rc = -EAGAIN);
1573 if (rc > aa->aa_requested_nob) {
1574 CERROR("Unexpected rc %d (%d requested)\n", rc,
1575 aa->aa_requested_nob);
1579 if (rc != req->rq_bulk->bd_nob_transferred) {
1580 CERROR ("Unexpected rc %d (%d transferred)\n",
1581 rc, req->rq_bulk->bd_nob_transferred);
1585 if (rc < aa->aa_requested_nob)
1586 handle_short_read(rc, aa->aa_page_count, aa->aa_ppga);
1588 if (body->oa.o_valid & OBD_MD_FLCKSUM) {
1589 static int cksum_counter;
1590 __u32 server_cksum = body->oa.o_cksum;
1593 cksum_type_t cksum_type;
1595 cksum_type = cksum_type_unpack(body->oa.o_valid &OBD_MD_FLFLAGS?
1596 body->oa.o_flags : 0);
1597 client_cksum = osc_checksum_bulk(rc, aa->aa_page_count,
1598 aa->aa_ppga, OST_READ,
1601 if (peer->nid == req->rq_bulk->bd_sender) {
1605 router = libcfs_nid2str(req->rq_bulk->bd_sender);
1608 if (server_cksum == ~0 && rc > 0) {
1609 CERROR("Protocol error: server %s set the 'checksum' "
1610 "bit, but didn't send a checksum. Not fatal, "
1611 "but please notify on http://bugs.whamcloud.com/\n",
1612 libcfs_nid2str(peer->nid));
1613 } else if (server_cksum != client_cksum) {
1614 LCONSOLE_ERROR_MSG(0x133, "%s: BAD READ CHECKSUM: from "
1615 "%s%s%s inode "DFID" object "DOSTID
1616 " extent ["LPU64"-"LPU64"]\n",
1617 req->rq_import->imp_obd->obd_name,
1618 libcfs_nid2str(peer->nid),
1620 body->oa.o_valid & OBD_MD_FLFID ?
1621 body->oa.o_parent_seq : (__u64)0,
1622 body->oa.o_valid & OBD_MD_FLFID ?
1623 body->oa.o_parent_oid : 0,
1624 body->oa.o_valid & OBD_MD_FLFID ?
1625 body->oa.o_parent_ver : 0,
1626 POSTID(&body->oa.o_oi),
1627 aa->aa_ppga[0]->off,
1628 aa->aa_ppga[aa->aa_page_count-1]->off +
1629 aa->aa_ppga[aa->aa_page_count-1]->count -
1631 CERROR("client %x, server %x, cksum_type %x\n",
1632 client_cksum, server_cksum, cksum_type);
1634 aa->aa_oa->o_cksum = client_cksum;
1638 CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
1641 } else if (unlikely(client_cksum)) {
1642 static int cksum_missed;
1645 if ((cksum_missed & (-cksum_missed)) == cksum_missed)
1646 CERROR("Checksum %u requested from %s but not sent\n",
1647 cksum_missed, libcfs_nid2str(peer->nid));
1653 lustre_get_wire_obdo(&req->rq_import->imp_connect_data,
1654 aa->aa_oa, &body->oa);
1659 static int osc_brw_internal(int cmd, struct obd_export *exp, struct obdo *oa,
1660 struct lov_stripe_md *lsm,
1661 obd_count page_count, struct brw_page **pga,
1662 struct obd_capa *ocapa)
1664 struct ptlrpc_request *req;
1666 wait_queue_head_t waitq;
1667 int generation, resends = 0;
1668 struct l_wait_info lwi;
1672 init_waitqueue_head(&waitq);
1673 generation = exp->exp_obd->u.cli.cl_import->imp_generation;
1676 rc = osc_brw_prep_request(cmd, &exp->exp_obd->u.cli, oa, lsm,
1677 page_count, pga, &req, ocapa, 0, resends);
1682 req->rq_generation_set = 1;
1683 req->rq_import_generation = generation;
1684 req->rq_sent = cfs_time_current_sec() + resends;
1687 rc = ptlrpc_queue_wait(req);
1689 if (rc == -ETIMEDOUT && req->rq_resend) {
1690 DEBUG_REQ(D_HA, req, "BULK TIMEOUT");
1691 ptlrpc_req_finished(req);
1695 rc = osc_brw_fini_request(req, rc);
1697 ptlrpc_req_finished(req);
1698 /* When server return -EINPROGRESS, client should always retry
1699 * regardless of the number of times the bulk was resent already.*/
1700 if (osc_recoverable_error(rc)) {
1702 if (rc != -EINPROGRESS &&
1703 !client_should_resend(resends, &exp->exp_obd->u.cli)) {
1704 CERROR("%s: too many resend retries for object: "
1705 ""DOSTID", rc = %d.\n", exp->exp_obd->obd_name,
1706 POSTID(&oa->o_oi), rc);
1710 exp->exp_obd->u.cli.cl_import->imp_generation) {
1711 CDEBUG(D_HA, "%s: resend cross eviction for object: "
1712 ""DOSTID", rc = %d.\n", exp->exp_obd->obd_name,
1713 POSTID(&oa->o_oi), rc);
1717 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL,
1719 l_wait_event(waitq, 0, &lwi);
1724 if (rc == -EAGAIN || rc == -EINPROGRESS)
1729 static int osc_brw_redo_request(struct ptlrpc_request *request,
1730 struct osc_brw_async_args *aa, int rc)
1732 struct ptlrpc_request *new_req;
1733 struct osc_brw_async_args *new_aa;
1734 struct osc_async_page *oap;
1737 DEBUG_REQ(rc == -EINPROGRESS ? D_RPCTRACE : D_ERROR, request,
1738 "redo for recoverable error %d", rc);
1740 rc = osc_brw_prep_request(lustre_msg_get_opc(request->rq_reqmsg) ==
1741 OST_WRITE ? OBD_BRW_WRITE :OBD_BRW_READ,
1742 aa->aa_cli, aa->aa_oa,
1743 NULL /* lsm unused by osc currently */,
1744 aa->aa_page_count, aa->aa_ppga,
1745 &new_req, aa->aa_ocapa, 0, 1);
1749 cfs_list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
1750 if (oap->oap_request != NULL) {
1751 LASSERTF(request == oap->oap_request,
1752 "request %p != oap_request %p\n",
1753 request, oap->oap_request);
1754 if (oap->oap_interrupted) {
1755 ptlrpc_req_finished(new_req);
1760 /* New request takes over pga and oaps from old request.
1761 * Note that copying a list_head doesn't work, need to move it... */
1763 new_req->rq_interpret_reply = request->rq_interpret_reply;
1764 new_req->rq_async_args = request->rq_async_args;
1765 new_req->rq_commit_cb = request->rq_commit_cb;
1766 /* cap resend delay to the current request timeout, this is similar to
1767 * what ptlrpc does (see after_reply()) */
1768 if (aa->aa_resends > new_req->rq_timeout)
1769 new_req->rq_sent = cfs_time_current_sec() + new_req->rq_timeout;
1771 new_req->rq_sent = cfs_time_current_sec() + aa->aa_resends;
1772 new_req->rq_generation_set = 1;
1773 new_req->rq_import_generation = request->rq_import_generation;
1775 new_aa = ptlrpc_req_async_args(new_req);
1777 CFS_INIT_LIST_HEAD(&new_aa->aa_oaps);
1778 cfs_list_splice_init(&aa->aa_oaps, &new_aa->aa_oaps);
1779 CFS_INIT_LIST_HEAD(&new_aa->aa_exts);
1780 cfs_list_splice_init(&aa->aa_exts, &new_aa->aa_exts);
1781 new_aa->aa_resends = aa->aa_resends;
1783 cfs_list_for_each_entry(oap, &new_aa->aa_oaps, oap_rpc_item) {
1784 if (oap->oap_request) {
1785 ptlrpc_req_finished(oap->oap_request);
1786 oap->oap_request = ptlrpc_request_addref(new_req);
1790 new_aa->aa_ocapa = aa->aa_ocapa;
1791 aa->aa_ocapa = NULL;
1793 /* XXX: This code will run into problem if we're going to support
1794 * to add a series of BRW RPCs into a self-defined ptlrpc_request_set
1795 * and wait for all of them to be finished. We should inherit request
1796 * set from old request. */
1797 ptlrpcd_add_req(new_req, PDL_POLICY_SAME, -1);
1799 DEBUG_REQ(D_INFO, new_req, "new request");
1804 * ugh, we want disk allocation on the target to happen in offset order. we'll
1805 * follow sedgewicks advice and stick to the dead simple shellsort -- it'll do
1806 * fine for our small page arrays and doesn't require allocation. its an
1807 * insertion sort that swaps elements that are strides apart, shrinking the
1808 * stride down until its '1' and the array is sorted.
1810 static void sort_brw_pages(struct brw_page **array, int num)
1813 struct brw_page *tmp;
1817 for (stride = 1; stride < num ; stride = (stride * 3) + 1)
1822 for (i = stride ; i < num ; i++) {
1825 while (j >= stride && array[j - stride]->off > tmp->off) {
1826 array[j] = array[j - stride];
1831 } while (stride > 1);
1834 static obd_count max_unfragmented_pages(struct brw_page **pg, obd_count pages)
1840 LASSERT (pages > 0);
1841 offset = pg[i]->off & ~CFS_PAGE_MASK;
1845 if (pages == 0) /* that's all */
1848 if (offset + pg[i]->count < PAGE_CACHE_SIZE)
1849 return count; /* doesn't end on page boundary */
1852 offset = pg[i]->off & ~CFS_PAGE_MASK;
1853 if (offset != 0) /* doesn't start on page boundary */
1860 static struct brw_page **osc_build_ppga(struct brw_page *pga, obd_count count)
1862 struct brw_page **ppga;
1865 OBD_ALLOC(ppga, sizeof(*ppga) * count);
1869 for (i = 0; i < count; i++)
1874 static void osc_release_ppga(struct brw_page **ppga, obd_count count)
1876 LASSERT(ppga != NULL);
1877 OBD_FREE(ppga, sizeof(*ppga) * count);
1880 static int osc_brw(int cmd, struct obd_export *exp, struct obd_info *oinfo,
1881 obd_count page_count, struct brw_page *pga,
1882 struct obd_trans_info *oti)
1884 struct obdo *saved_oa = NULL;
1885 struct brw_page **ppga, **orig;
1886 struct obd_import *imp = class_exp2cliimp(exp);
1887 struct client_obd *cli;
1888 int rc, page_count_orig;
1891 LASSERT((imp != NULL) && (imp->imp_obd != NULL));
1892 cli = &imp->imp_obd->u.cli;
1894 if (cmd & OBD_BRW_CHECK) {
1895 /* The caller just wants to know if there's a chance that this
1896 * I/O can succeed */
1898 if (imp->imp_invalid)
1903 /* test_brw with a failed create can trip this, maybe others. */
1904 LASSERT(cli->cl_max_pages_per_rpc);
1908 orig = ppga = osc_build_ppga(pga, page_count);
1911 page_count_orig = page_count;
1913 sort_brw_pages(ppga, page_count);
1914 while (page_count) {
1915 obd_count pages_per_brw;
1917 if (page_count > cli->cl_max_pages_per_rpc)
1918 pages_per_brw = cli->cl_max_pages_per_rpc;
1920 pages_per_brw = page_count;
1922 pages_per_brw = max_unfragmented_pages(ppga, pages_per_brw);
1924 if (saved_oa != NULL) {
1925 /* restore previously saved oa */
1926 *oinfo->oi_oa = *saved_oa;
1927 } else if (page_count > pages_per_brw) {
1928 /* save a copy of oa (brw will clobber it) */
1929 OBDO_ALLOC(saved_oa);
1930 if (saved_oa == NULL)
1931 GOTO(out, rc = -ENOMEM);
1932 *saved_oa = *oinfo->oi_oa;
1935 rc = osc_brw_internal(cmd, exp, oinfo->oi_oa, oinfo->oi_md,
1936 pages_per_brw, ppga, oinfo->oi_capa);
1941 page_count -= pages_per_brw;
1942 ppga += pages_per_brw;
1946 osc_release_ppga(orig, page_count_orig);
1948 if (saved_oa != NULL)
1949 OBDO_FREE(saved_oa);
1954 static int brw_interpret(const struct lu_env *env,
1955 struct ptlrpc_request *req, void *data, int rc)
1957 struct osc_brw_async_args *aa = data;
1958 struct osc_extent *ext;
1959 struct osc_extent *tmp;
1960 struct cl_object *obj = NULL;
1961 struct client_obd *cli = aa->aa_cli;
1964 rc = osc_brw_fini_request(req, rc);
1965 CDEBUG(D_INODE, "request %p aa %p rc %d\n", req, aa, rc);
1966 /* When server return -EINPROGRESS, client should always retry
1967 * regardless of the number of times the bulk was resent already. */
1968 if (osc_recoverable_error(rc)) {
1969 if (req->rq_import_generation !=
1970 req->rq_import->imp_generation) {
1971 CDEBUG(D_HA, "%s: resend cross eviction for object: "
1972 ""DOSTID", rc = %d.\n",
1973 req->rq_import->imp_obd->obd_name,
1974 POSTID(&aa->aa_oa->o_oi), rc);
1975 } else if (rc == -EINPROGRESS ||
1976 client_should_resend(aa->aa_resends, aa->aa_cli)) {
1977 rc = osc_brw_redo_request(req, aa, rc);
1979 CERROR("%s: too many resent retries for object: "
1980 ""LPU64":"LPU64", rc = %d.\n",
1981 req->rq_import->imp_obd->obd_name,
1982 POSTID(&aa->aa_oa->o_oi), rc);
1987 else if (rc == -EAGAIN || rc == -EINPROGRESS)
1992 capa_put(aa->aa_ocapa);
1993 aa->aa_ocapa = NULL;
1996 cfs_list_for_each_entry_safe(ext, tmp, &aa->aa_exts, oe_link) {
1997 if (obj == NULL && rc == 0) {
1998 obj = osc2cl(ext->oe_obj);
2002 cfs_list_del_init(&ext->oe_link);
2003 osc_extent_finish(env, ext, 1, rc);
2005 LASSERT(cfs_list_empty(&aa->aa_exts));
2006 LASSERT(cfs_list_empty(&aa->aa_oaps));
2009 struct obdo *oa = aa->aa_oa;
2010 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
2011 unsigned long valid = 0;
2014 if (oa->o_valid & OBD_MD_FLBLOCKS) {
2015 attr->cat_blocks = oa->o_blocks;
2016 valid |= CAT_BLOCKS;
2018 if (oa->o_valid & OBD_MD_FLMTIME) {
2019 attr->cat_mtime = oa->o_mtime;
2022 if (oa->o_valid & OBD_MD_FLATIME) {
2023 attr->cat_atime = oa->o_atime;
2026 if (oa->o_valid & OBD_MD_FLCTIME) {
2027 attr->cat_ctime = oa->o_ctime;
2031 cl_object_attr_lock(obj);
2032 cl_object_attr_set(env, obj, attr, valid);
2033 cl_object_attr_unlock(obj);
2035 cl_object_put(env, obj);
2037 OBDO_FREE(aa->aa_oa);
2039 cl_req_completion(env, aa->aa_clerq, rc < 0 ? rc :
2040 req->rq_bulk->bd_nob_transferred);
2041 osc_release_ppga(aa->aa_ppga, aa->aa_page_count);
2042 ptlrpc_lprocfs_brw(req, req->rq_bulk->bd_nob_transferred);
2044 client_obd_list_lock(&cli->cl_loi_list_lock);
2045 /* We need to decrement before osc_ap_completion->osc_wake_cache_waiters
2046 * is called so we know whether to go to sync BRWs or wait for more
2047 * RPCs to complete */
2048 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE)
2049 cli->cl_w_in_flight--;
2051 cli->cl_r_in_flight--;
2052 osc_wake_cache_waiters(cli);
2053 client_obd_list_unlock(&cli->cl_loi_list_lock);
2055 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
2059 static void brw_commit(struct ptlrpc_request *req)
2061 spin_lock(&req->rq_lock);
2062 /* If osc_inc_unstable_pages (via osc_extent_finish) races with
2063 * this called via the rq_commit_cb, I need to ensure
2064 * osc_dec_unstable_pages is still called. Otherwise unstable
2065 * pages may be leaked. */
2066 if (req->rq_unstable) {
2067 spin_unlock(&req->rq_lock);
2068 osc_dec_unstable_pages(req);
2069 spin_lock(&req->rq_lock);
2071 req->rq_committed = 1;
2073 spin_unlock(&req->rq_lock);
2077 * Build an RPC by the list of extent @ext_list. The caller must ensure
2078 * that the total pages in this list are NOT over max pages per RPC.
2079 * Extents in the list must be in OES_RPC state.
2081 int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
2082 cfs_list_t *ext_list, int cmd, pdl_policy_t pol)
2084 struct ptlrpc_request *req = NULL;
2085 struct osc_extent *ext;
2086 struct brw_page **pga = NULL;
2087 struct osc_brw_async_args *aa = NULL;
2088 struct obdo *oa = NULL;
2089 struct osc_async_page *oap;
2090 struct osc_async_page *tmp;
2091 struct cl_req *clerq = NULL;
2092 enum cl_req_type crt = (cmd & OBD_BRW_WRITE) ? CRT_WRITE :
2094 struct ldlm_lock *lock = NULL;
2095 struct cl_req_attr *crattr = NULL;
2096 obd_off starting_offset = OBD_OBJECT_EOF;
2097 obd_off ending_offset = 0;
2103 CFS_LIST_HEAD(rpc_list);
2106 LASSERT(!cfs_list_empty(ext_list));
2108 /* add pages into rpc_list to build BRW rpc */
2109 cfs_list_for_each_entry(ext, ext_list, oe_link) {
2110 LASSERT(ext->oe_state == OES_RPC);
2111 mem_tight |= ext->oe_memalloc;
2112 cfs_list_for_each_entry(oap, &ext->oe_pages, oap_pending_item) {
2114 cfs_list_add_tail(&oap->oap_rpc_item, &rpc_list);
2115 if (starting_offset > oap->oap_obj_off)
2116 starting_offset = oap->oap_obj_off;
2118 LASSERT(oap->oap_page_off == 0);
2119 if (ending_offset < oap->oap_obj_off + oap->oap_count)
2120 ending_offset = oap->oap_obj_off +
2123 LASSERT(oap->oap_page_off + oap->oap_count ==
2129 mpflag = cfs_memory_pressure_get_and_set();
2131 OBD_ALLOC(crattr, sizeof(*crattr));
2133 GOTO(out, rc = -ENOMEM);
2135 OBD_ALLOC(pga, sizeof(*pga) * page_count);
2137 GOTO(out, rc = -ENOMEM);
2141 GOTO(out, rc = -ENOMEM);
2144 cfs_list_for_each_entry(oap, &rpc_list, oap_rpc_item) {
2145 struct cl_page *page = oap2cl_page(oap);
2146 if (clerq == NULL) {
2147 clerq = cl_req_alloc(env, page, crt,
2148 1 /* only 1-object rpcs for now */);
2150 GOTO(out, rc = PTR_ERR(clerq));
2151 lock = oap->oap_ldlm_lock;
2154 oap->oap_brw_flags |= OBD_BRW_MEMALLOC;
2155 pga[i] = &oap->oap_brw_page;
2156 pga[i]->off = oap->oap_obj_off + oap->oap_page_off;
2157 CDEBUG(0, "put page %p index %lu oap %p flg %x to pga\n",
2158 pga[i]->pg, page_index(oap->oap_page), oap,
2161 cl_req_page_add(env, clerq, page);
2164 /* always get the data for the obdo for the rpc */
2165 LASSERT(clerq != NULL);
2166 crattr->cra_oa = oa;
2167 cl_req_attr_set(env, clerq, crattr, ~0ULL);
2169 oa->o_handle = lock->l_remote_handle;
2170 oa->o_valid |= OBD_MD_FLHANDLE;
2173 rc = cl_req_prep(env, clerq);
2175 CERROR("cl_req_prep failed: %d\n", rc);
2179 sort_brw_pages(pga, page_count);
2180 rc = osc_brw_prep_request(cmd, cli, oa, NULL, page_count,
2181 pga, &req, crattr->cra_capa, 1, 0);
2183 CERROR("prep_req failed: %d\n", rc);
2187 req->rq_commit_cb = brw_commit;
2188 req->rq_interpret_reply = brw_interpret;
2191 req->rq_memalloc = 1;
2193 /* Need to update the timestamps after the request is built in case
2194 * we race with setattr (locally or in queue at OST). If OST gets
2195 * later setattr before earlier BRW (as determined by the request xid),
2196 * the OST will not use BRW timestamps. Sadly, there is no obvious
2197 * way to do this in a single call. bug 10150 */
2198 cl_req_attr_set(env, clerq, crattr,
2199 OBD_MD_FLMTIME|OBD_MD_FLCTIME|OBD_MD_FLATIME);
2201 lustre_msg_set_jobid(req->rq_reqmsg, crattr->cra_jobid);
2203 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
2204 aa = ptlrpc_req_async_args(req);
2205 CFS_INIT_LIST_HEAD(&aa->aa_oaps);
2206 cfs_list_splice_init(&rpc_list, &aa->aa_oaps);
2207 CFS_INIT_LIST_HEAD(&aa->aa_exts);
2208 cfs_list_splice_init(ext_list, &aa->aa_exts);
2209 aa->aa_clerq = clerq;
2211 /* queued sync pages can be torn down while the pages
2212 * were between the pending list and the rpc */
2214 cfs_list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
2215 /* only one oap gets a request reference */
2218 if (oap->oap_interrupted && !req->rq_intr) {
2219 CDEBUG(D_INODE, "oap %p in req %p interrupted\n",
2221 ptlrpc_mark_interrupted(req);
2225 tmp->oap_request = ptlrpc_request_addref(req);
2227 client_obd_list_lock(&cli->cl_loi_list_lock);
2228 starting_offset >>= PAGE_CACHE_SHIFT;
2229 if (cmd == OBD_BRW_READ) {
2230 cli->cl_r_in_flight++;
2231 lprocfs_oh_tally_log2(&cli->cl_read_page_hist, page_count);
2232 lprocfs_oh_tally(&cli->cl_read_rpc_hist, cli->cl_r_in_flight);
2233 lprocfs_oh_tally_log2(&cli->cl_read_offset_hist,
2234 starting_offset + 1);
2236 cli->cl_w_in_flight++;
2237 lprocfs_oh_tally_log2(&cli->cl_write_page_hist, page_count);
2238 lprocfs_oh_tally(&cli->cl_write_rpc_hist, cli->cl_w_in_flight);
2239 lprocfs_oh_tally_log2(&cli->cl_write_offset_hist,
2240 starting_offset + 1);
2242 client_obd_list_unlock(&cli->cl_loi_list_lock);
2244 DEBUG_REQ(D_INODE, req, "%d pages, aa %p. now %dr/%dw in flight",
2245 page_count, aa, cli->cl_r_in_flight,
2246 cli->cl_w_in_flight);
2248 /* XXX: Maybe the caller can check the RPC bulk descriptor to
2249 * see which CPU/NUMA node the majority of pages were allocated
2250 * on, and try to assign the async RPC to the CPU core
2251 * (PDL_POLICY_PREFERRED) to reduce cross-CPU memory traffic.
2253 * But on the other hand, we expect that multiple ptlrpcd
2254 * threads and the initial write sponsor can run in parallel,
2255 * especially when data checksum is enabled, which is CPU-bound
2256 * operation and single ptlrpcd thread cannot process in time.
2257 * So more ptlrpcd threads sharing BRW load
2258 * (with PDL_POLICY_ROUND) seems better.
2260 ptlrpcd_add_req(req, pol, -1);
2266 cfs_memory_pressure_restore(mpflag);
2268 if (crattr != NULL) {
2269 capa_put(crattr->cra_capa);
2270 OBD_FREE(crattr, sizeof(*crattr));
2274 LASSERT(req == NULL);
2279 OBD_FREE(pga, sizeof(*pga) * page_count);
2280 /* this should happen rarely and is pretty bad, it makes the
2281 * pending list not follow the dirty order */
2282 while (!cfs_list_empty(ext_list)) {
2283 ext = cfs_list_entry(ext_list->next, struct osc_extent,
2285 cfs_list_del_init(&ext->oe_link);
2286 osc_extent_finish(env, ext, 0, rc);
2288 if (clerq && !IS_ERR(clerq))
2289 cl_req_completion(env, clerq, rc);
2294 static int osc_set_lock_data_with_check(struct ldlm_lock *lock,
2295 struct ldlm_enqueue_info *einfo)
2297 void *data = einfo->ei_cbdata;
2300 LASSERT(lock != NULL);
2301 LASSERT(lock->l_blocking_ast == einfo->ei_cb_bl);
2302 LASSERT(lock->l_resource->lr_type == einfo->ei_type);
2303 LASSERT(lock->l_completion_ast == einfo->ei_cb_cp);
2304 LASSERT(lock->l_glimpse_ast == einfo->ei_cb_gl);
2306 lock_res_and_lock(lock);
2307 spin_lock(&osc_ast_guard);
2309 if (lock->l_ast_data == NULL)
2310 lock->l_ast_data = data;
2311 if (lock->l_ast_data == data)
2314 spin_unlock(&osc_ast_guard);
2315 unlock_res_and_lock(lock);
2320 static int osc_set_data_with_check(struct lustre_handle *lockh,
2321 struct ldlm_enqueue_info *einfo)
2323 struct ldlm_lock *lock = ldlm_handle2lock(lockh);
2327 set = osc_set_lock_data_with_check(lock, einfo);
2328 LDLM_LOCK_PUT(lock);
2330 CERROR("lockh %p, data %p - client evicted?\n",
2331 lockh, einfo->ei_cbdata);
2335 static int osc_change_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
2336 ldlm_iterator_t replace, void *data)
2338 struct ldlm_res_id res_id;
2339 struct obd_device *obd = class_exp2obd(exp);
2341 ostid_build_res_name(&lsm->lsm_oi, &res_id);
2342 ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
2346 /* find any ldlm lock of the inode in osc
2350 static int osc_find_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
2351 ldlm_iterator_t replace, void *data)
2353 struct ldlm_res_id res_id;
2354 struct obd_device *obd = class_exp2obd(exp);
2357 ostid_build_res_name(&lsm->lsm_oi, &res_id);
2358 rc = ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
2359 if (rc == LDLM_ITER_STOP)
2361 if (rc == LDLM_ITER_CONTINUE)
2366 static int osc_enqueue_fini(struct ptlrpc_request *req, struct ost_lvb *lvb,
2367 obd_enqueue_update_f upcall, void *cookie,
2368 __u64 *flags, int agl, int rc)
2370 int intent = *flags & LDLM_FL_HAS_INTENT;
2374 /* The request was created before ldlm_cli_enqueue call. */
2375 if (rc == ELDLM_LOCK_ABORTED) {
2376 struct ldlm_reply *rep;
2377 rep = req_capsule_server_get(&req->rq_pill,
2380 LASSERT(rep != NULL);
2381 rep->lock_policy_res1 =
2382 ptlrpc_status_ntoh(rep->lock_policy_res1);
2383 if (rep->lock_policy_res1)
2384 rc = rep->lock_policy_res1;
2388 if ((intent != 0 && rc == ELDLM_LOCK_ABORTED && agl == 0) ||
2390 *flags |= LDLM_FL_LVB_READY;
2391 CDEBUG(D_INODE,"got kms "LPU64" blocks "LPU64" mtime "LPU64"\n",
2392 lvb->lvb_size, lvb->lvb_blocks, lvb->lvb_mtime);
2395 /* Call the update callback. */
2396 rc = (*upcall)(cookie, rc);
2400 static int osc_enqueue_interpret(const struct lu_env *env,
2401 struct ptlrpc_request *req,
2402 struct osc_enqueue_args *aa, int rc)
2404 struct ldlm_lock *lock;
2405 struct lustre_handle handle;
2407 struct ost_lvb *lvb;
2409 __u64 *flags = aa->oa_flags;
2411 /* Make a local copy of a lock handle and a mode, because aa->oa_*
2412 * might be freed anytime after lock upcall has been called. */
2413 lustre_handle_copy(&handle, aa->oa_lockh);
2414 mode = aa->oa_ei->ei_mode;
2416 /* ldlm_cli_enqueue is holding a reference on the lock, so it must
2418 lock = ldlm_handle2lock(&handle);
2420 /* Take an additional reference so that a blocking AST that
2421 * ldlm_cli_enqueue_fini() might post for a failed lock, is guaranteed
2422 * to arrive after an upcall has been executed by
2423 * osc_enqueue_fini(). */
2424 ldlm_lock_addref(&handle, mode);
2426 /* Let CP AST to grant the lock first. */
2427 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_ENQ_RACE, 1);
2429 if (aa->oa_agl && rc == ELDLM_LOCK_ABORTED) {
2434 lvb_len = sizeof(*aa->oa_lvb);
2437 /* Complete obtaining the lock procedure. */
2438 rc = ldlm_cli_enqueue_fini(aa->oa_exp, req, aa->oa_ei->ei_type, 1,
2439 mode, flags, lvb, lvb_len, &handle, rc);
2440 /* Complete osc stuff. */
2441 rc = osc_enqueue_fini(req, aa->oa_lvb, aa->oa_upcall, aa->oa_cookie,
2442 flags, aa->oa_agl, rc);
2444 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_CANCEL_RACE, 10);
2446 /* Release the lock for async request. */
2447 if (lustre_handle_is_used(&handle) && rc == ELDLM_OK)
2449 * Releases a reference taken by ldlm_cli_enqueue(), if it is
2450 * not already released by
2451 * ldlm_cli_enqueue_fini()->failed_lock_cleanup()
2453 ldlm_lock_decref(&handle, mode);
2455 LASSERTF(lock != NULL, "lockh %p, req %p, aa %p - client evicted?\n",
2456 aa->oa_lockh, req, aa);
2457 ldlm_lock_decref(&handle, mode);
2458 LDLM_LOCK_PUT(lock);
2462 void osc_update_enqueue(struct lustre_handle *lov_lockhp,
2463 struct lov_oinfo *loi, __u64 flags,
2464 struct ost_lvb *lvb, __u32 mode, int rc)
2466 struct ldlm_lock *lock = ldlm_handle2lock(lov_lockhp);
2468 if (rc == ELDLM_OK) {
2471 LASSERT(lock != NULL);
2472 loi->loi_lvb = *lvb;
2473 tmp = loi->loi_lvb.lvb_size;
2474 /* Extend KMS up to the end of this lock and no further
2475 * A lock on [x,y] means a KMS of up to y + 1 bytes! */
2476 if (tmp > lock->l_policy_data.l_extent.end)
2477 tmp = lock->l_policy_data.l_extent.end + 1;
2478 if (tmp >= loi->loi_kms) {
2479 LDLM_DEBUG(lock, "lock acquired, setting rss="LPU64
2480 ", kms="LPU64, loi->loi_lvb.lvb_size, tmp);
2481 loi_kms_set(loi, tmp);
2483 LDLM_DEBUG(lock, "lock acquired, setting rss="
2484 LPU64"; leaving kms="LPU64", end="LPU64,
2485 loi->loi_lvb.lvb_size, loi->loi_kms,
2486 lock->l_policy_data.l_extent.end);
2488 ldlm_lock_allow_match(lock);
2489 } else if (rc == ELDLM_LOCK_ABORTED && (flags & LDLM_FL_HAS_INTENT)) {
2490 LASSERT(lock != NULL);
2491 loi->loi_lvb = *lvb;
2492 ldlm_lock_allow_match(lock);
2493 CDEBUG(D_INODE, "glimpsed, setting rss="LPU64"; leaving"
2494 " kms="LPU64"\n", loi->loi_lvb.lvb_size, loi->loi_kms);
2500 ldlm_lock_fail_match(lock);
2502 LDLM_LOCK_PUT(lock);
2505 EXPORT_SYMBOL(osc_update_enqueue);
2507 struct ptlrpc_request_set *PTLRPCD_SET = (void *)1;
2509 /* When enqueuing asynchronously, locks are not ordered, we can obtain a lock
2510 * from the 2nd OSC before a lock from the 1st one. This does not deadlock with
2511 * other synchronous requests, however keeping some locks and trying to obtain
2512 * others may take a considerable amount of time in a case of ost failure; and
2513 * when other sync requests do not get released lock from a client, the client
2514 * is excluded from the cluster -- such scenarious make the life difficult, so
2515 * release locks just after they are obtained. */
2516 int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2517 __u64 *flags, ldlm_policy_data_t *policy,
2518 struct ost_lvb *lvb, int kms_valid,
2519 obd_enqueue_update_f upcall, void *cookie,
2520 struct ldlm_enqueue_info *einfo,
2521 struct lustre_handle *lockh,
2522 struct ptlrpc_request_set *rqset, int async, int agl)
2524 struct obd_device *obd = exp->exp_obd;
2525 struct ptlrpc_request *req = NULL;
2526 int intent = *flags & LDLM_FL_HAS_INTENT;
2527 __u64 match_lvb = (agl != 0 ? 0 : LDLM_FL_LVB_READY);
2532 /* Filesystem lock extents are extended to page boundaries so that
2533 * dealing with the page cache is a little smoother. */
2534 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2535 policy->l_extent.end |= ~CFS_PAGE_MASK;
2538 * kms is not valid when either object is completely fresh (so that no
2539 * locks are cached), or object was evicted. In the latter case cached
2540 * lock cannot be used, because it would prime inode state with
2541 * potentially stale LVB.
2546 /* Next, search for already existing extent locks that will cover us */
2547 /* If we're trying to read, we also search for an existing PW lock. The
2548 * VFS and page cache already protect us locally, so lots of readers/
2549 * writers can share a single PW lock.
2551 * There are problems with conversion deadlocks, so instead of
2552 * converting a read lock to a write lock, we'll just enqueue a new
2555 * At some point we should cancel the read lock instead of making them
2556 * send us a blocking callback, but there are problems with canceling
2557 * locks out from other users right now, too. */
2558 mode = einfo->ei_mode;
2559 if (einfo->ei_mode == LCK_PR)
2561 mode = ldlm_lock_match(obd->obd_namespace, *flags | match_lvb, res_id,
2562 einfo->ei_type, policy, mode, lockh, 0);
2564 struct ldlm_lock *matched = ldlm_handle2lock(lockh);
2566 if ((agl != 0) && !ldlm_is_lvb_ready(matched)) {
2567 /* For AGL, if enqueue RPC is sent but the lock is not
2568 * granted, then skip to process this strpe.
2569 * Return -ECANCELED to tell the caller. */
2570 ldlm_lock_decref(lockh, mode);
2571 LDLM_LOCK_PUT(matched);
2573 } else if (osc_set_lock_data_with_check(matched, einfo)) {
2574 *flags |= LDLM_FL_LVB_READY;
2575 /* addref the lock only if not async requests and PW
2576 * lock is matched whereas we asked for PR. */
2577 if (!rqset && einfo->ei_mode != mode)
2578 ldlm_lock_addref(lockh, LCK_PR);
2580 /* I would like to be able to ASSERT here that
2581 * rss <= kms, but I can't, for reasons which
2582 * are explained in lov_enqueue() */
2585 /* We already have a lock, and it's referenced.
2587 * At this point, the cl_lock::cll_state is CLS_QUEUING,
2588 * AGL upcall may change it to CLS_HELD directly. */
2589 (*upcall)(cookie, ELDLM_OK);
2591 if (einfo->ei_mode != mode)
2592 ldlm_lock_decref(lockh, LCK_PW);
2594 /* For async requests, decref the lock. */
2595 ldlm_lock_decref(lockh, einfo->ei_mode);
2596 LDLM_LOCK_PUT(matched);
2599 ldlm_lock_decref(lockh, mode);
2600 LDLM_LOCK_PUT(matched);
2606 CFS_LIST_HEAD(cancels);
2607 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2608 &RQF_LDLM_ENQUEUE_LVB);
2612 rc = ldlm_prep_enqueue_req(exp, req, &cancels, 0);
2614 ptlrpc_request_free(req);
2618 req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
2620 ptlrpc_request_set_replen(req);
2623 /* users of osc_enqueue() can pass this flag for ldlm_lock_match() */
2624 *flags &= ~LDLM_FL_BLOCK_GRANTED;
2626 rc = ldlm_cli_enqueue(exp, &req, einfo, res_id, policy, flags, lvb,
2627 sizeof(*lvb), LVB_T_OST, lockh, async);
2630 struct osc_enqueue_args *aa;
2631 CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
2632 aa = ptlrpc_req_async_args(req);
2635 aa->oa_flags = flags;
2636 aa->oa_upcall = upcall;
2637 aa->oa_cookie = cookie;
2639 aa->oa_lockh = lockh;
2642 req->rq_interpret_reply =
2643 (ptlrpc_interpterer_t)osc_enqueue_interpret;
2644 if (rqset == PTLRPCD_SET)
2645 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
2647 ptlrpc_set_add_req(rqset, req);
2648 } else if (intent) {
2649 ptlrpc_req_finished(req);
2654 rc = osc_enqueue_fini(req, lvb, upcall, cookie, flags, agl, rc);
2656 ptlrpc_req_finished(req);
2661 static int osc_enqueue(struct obd_export *exp, struct obd_info *oinfo,
2662 struct ldlm_enqueue_info *einfo,
2663 struct ptlrpc_request_set *rqset)
2665 struct ldlm_res_id res_id;
2669 ostid_build_res_name(&oinfo->oi_md->lsm_oi, &res_id);
2670 rc = osc_enqueue_base(exp, &res_id, &oinfo->oi_flags, &oinfo->oi_policy,
2671 &oinfo->oi_md->lsm_oinfo[0]->loi_lvb,
2672 oinfo->oi_md->lsm_oinfo[0]->loi_kms_valid,
2673 oinfo->oi_cb_up, oinfo, einfo, oinfo->oi_lockh,
2674 rqset, rqset != NULL, 0);
2678 int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2679 __u32 type, ldlm_policy_data_t *policy, __u32 mode,
2680 __u64 *flags, void *data, struct lustre_handle *lockh,
2683 struct obd_device *obd = exp->exp_obd;
2684 __u64 lflags = *flags;
2688 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_MATCH))
2691 /* Filesystem lock extents are extended to page boundaries so that
2692 * dealing with the page cache is a little smoother */
2693 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2694 policy->l_extent.end |= ~CFS_PAGE_MASK;
2696 /* Next, search for already existing extent locks that will cover us */
2697 /* If we're trying to read, we also search for an existing PW lock. The
2698 * VFS and page cache already protect us locally, so lots of readers/
2699 * writers can share a single PW lock. */
2703 rc = ldlm_lock_match(obd->obd_namespace, lflags,
2704 res_id, type, policy, rc, lockh, unref);
2707 if (!osc_set_data_with_check(lockh, data)) {
2708 if (!(lflags & LDLM_FL_TEST_LOCK))
2709 ldlm_lock_decref(lockh, rc);
2713 if (!(lflags & LDLM_FL_TEST_LOCK) && mode != rc) {
2714 ldlm_lock_addref(lockh, LCK_PR);
2715 ldlm_lock_decref(lockh, LCK_PW);
2722 int osc_cancel_base(struct lustre_handle *lockh, __u32 mode)
2726 if (unlikely(mode == LCK_GROUP))
2727 ldlm_lock_decref_and_cancel(lockh, mode);
2729 ldlm_lock_decref(lockh, mode);
2734 static int osc_cancel(struct obd_export *exp, struct lov_stripe_md *md,
2735 __u32 mode, struct lustre_handle *lockh)
2738 RETURN(osc_cancel_base(lockh, mode));
2741 static int osc_cancel_unused(struct obd_export *exp,
2742 struct lov_stripe_md *lsm,
2743 ldlm_cancel_flags_t flags,
2746 struct obd_device *obd = class_exp2obd(exp);
2747 struct ldlm_res_id res_id, *resp = NULL;
2750 ostid_build_res_name(&lsm->lsm_oi, &res_id);
2754 return ldlm_cli_cancel_unused(obd->obd_namespace, resp, flags, opaque);
2757 static int osc_statfs_interpret(const struct lu_env *env,
2758 struct ptlrpc_request *req,
2759 struct osc_async_args *aa, int rc)
2761 struct obd_statfs *msfs;
2765 /* The request has in fact never been sent
2766 * due to issues at a higher level (LOV).
2767 * Exit immediately since the caller is
2768 * aware of the problem and takes care
2769 * of the clean up */
2772 if ((rc == -ENOTCONN || rc == -EAGAIN) &&
2773 (aa->aa_oi->oi_flags & OBD_STATFS_NODELAY))
2779 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2781 GOTO(out, rc = -EPROTO);
2784 *aa->aa_oi->oi_osfs = *msfs;
2786 rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
2790 static int osc_statfs_async(struct obd_export *exp,
2791 struct obd_info *oinfo, __u64 max_age,
2792 struct ptlrpc_request_set *rqset)
2794 struct obd_device *obd = class_exp2obd(exp);
2795 struct ptlrpc_request *req;
2796 struct osc_async_args *aa;
2800 /* We could possibly pass max_age in the request (as an absolute
2801 * timestamp or a "seconds.usec ago") so the target can avoid doing
2802 * extra calls into the filesystem if that isn't necessary (e.g.
2803 * during mount that would help a bit). Having relative timestamps
2804 * is not so great if request processing is slow, while absolute
2805 * timestamps are not ideal because they need time synchronization. */
2806 req = ptlrpc_request_alloc(obd->u.cli.cl_import, &RQF_OST_STATFS);
2810 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2812 ptlrpc_request_free(req);
2815 ptlrpc_request_set_replen(req);
2816 req->rq_request_portal = OST_CREATE_PORTAL;
2817 ptlrpc_at_set_req_timeout(req);
2819 if (oinfo->oi_flags & OBD_STATFS_NODELAY) {
2820 /* procfs requests not want stat in wait for avoid deadlock */
2821 req->rq_no_resend = 1;
2822 req->rq_no_delay = 1;
2825 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_statfs_interpret;
2826 CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
2827 aa = ptlrpc_req_async_args(req);
2830 ptlrpc_set_add_req(rqset, req);
2834 static int osc_statfs(const struct lu_env *env, struct obd_export *exp,
2835 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
2837 struct obd_device *obd = class_exp2obd(exp);
2838 struct obd_statfs *msfs;
2839 struct ptlrpc_request *req;
2840 struct obd_import *imp = NULL;
2844 /*Since the request might also come from lprocfs, so we need
2845 *sync this with client_disconnect_export Bug15684*/
2846 down_read(&obd->u.cli.cl_sem);
2847 if (obd->u.cli.cl_import)
2848 imp = class_import_get(obd->u.cli.cl_import);
2849 up_read(&obd->u.cli.cl_sem);
2853 /* We could possibly pass max_age in the request (as an absolute
2854 * timestamp or a "seconds.usec ago") so the target can avoid doing
2855 * extra calls into the filesystem if that isn't necessary (e.g.
2856 * during mount that would help a bit). Having relative timestamps
2857 * is not so great if request processing is slow, while absolute
2858 * timestamps are not ideal because they need time synchronization. */
2859 req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
2861 class_import_put(imp);
2866 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2868 ptlrpc_request_free(req);
2871 ptlrpc_request_set_replen(req);
2872 req->rq_request_portal = OST_CREATE_PORTAL;
2873 ptlrpc_at_set_req_timeout(req);
2875 if (flags & OBD_STATFS_NODELAY) {
2876 /* procfs requests not want stat in wait for avoid deadlock */
2877 req->rq_no_resend = 1;
2878 req->rq_no_delay = 1;
2881 rc = ptlrpc_queue_wait(req);
2885 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2887 GOTO(out, rc = -EPROTO);
2894 ptlrpc_req_finished(req);
2898 /* Retrieve object striping information.
2900 * @lmmu is a pointer to an in-core struct with lmm_ost_count indicating
2901 * the maximum number of OST indices which will fit in the user buffer.
2902 * lmm_magic must be LOV_MAGIC (we only use 1 slot here).
2904 static int osc_getstripe(struct lov_stripe_md *lsm, struct lov_user_md *lump)
2906 /* we use lov_user_md_v3 because it is larger than lov_user_md_v1 */
2907 struct lov_user_md_v3 lum, *lumk;
2908 struct lov_user_ost_data_v1 *lmm_objects;
2909 int rc = 0, lum_size;
2915 /* we only need the header part from user space to get lmm_magic and
2916 * lmm_stripe_count, (the header part is common to v1 and v3) */
2917 lum_size = sizeof(struct lov_user_md_v1);
2918 if (copy_from_user(&lum, lump, lum_size))
2921 if ((lum.lmm_magic != LOV_USER_MAGIC_V1) &&
2922 (lum.lmm_magic != LOV_USER_MAGIC_V3))
2925 /* lov_user_md_vX and lov_mds_md_vX must have the same size */
2926 LASSERT(sizeof(struct lov_user_md_v1) == sizeof(struct lov_mds_md_v1));
2927 LASSERT(sizeof(struct lov_user_md_v3) == sizeof(struct lov_mds_md_v3));
2928 LASSERT(sizeof(lum.lmm_objects[0]) == sizeof(lumk->lmm_objects[0]));
2930 /* we can use lov_mds_md_size() to compute lum_size
2931 * because lov_user_md_vX and lov_mds_md_vX have the same size */
2932 if (lum.lmm_stripe_count > 0) {
2933 lum_size = lov_mds_md_size(lum.lmm_stripe_count, lum.lmm_magic);
2934 OBD_ALLOC(lumk, lum_size);
2938 if (lum.lmm_magic == LOV_USER_MAGIC_V1)
2940 &(((struct lov_user_md_v1 *)lumk)->lmm_objects[0]);
2942 lmm_objects = &(lumk->lmm_objects[0]);
2943 lmm_objects->l_ost_oi = lsm->lsm_oi;
2945 lum_size = lov_mds_md_size(0, lum.lmm_magic);
2949 lumk->lmm_oi = lsm->lsm_oi;
2950 lumk->lmm_stripe_count = 1;
2952 if (copy_to_user(lump, lumk, lum_size))
2956 OBD_FREE(lumk, lum_size);
2962 static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2963 void *karg, void *uarg)
2965 struct obd_device *obd = exp->exp_obd;
2966 struct obd_ioctl_data *data = karg;
2970 if (!try_module_get(THIS_MODULE)) {
2971 CERROR("Can't get module. Is it alive?");
2975 case OBD_IOC_LOV_GET_CONFIG: {
2977 struct lov_desc *desc;
2978 struct obd_uuid uuid;
2982 if (obd_ioctl_getdata(&buf, &len, (void *)uarg))
2983 GOTO(out, err = -EINVAL);
2985 data = (struct obd_ioctl_data *)buf;
2987 if (sizeof(*desc) > data->ioc_inllen1) {
2988 obd_ioctl_freedata(buf, len);
2989 GOTO(out, err = -EINVAL);
2992 if (data->ioc_inllen2 < sizeof(uuid)) {
2993 obd_ioctl_freedata(buf, len);
2994 GOTO(out, err = -EINVAL);
2997 desc = (struct lov_desc *)data->ioc_inlbuf1;
2998 desc->ld_tgt_count = 1;
2999 desc->ld_active_tgt_count = 1;
3000 desc->ld_default_stripe_count = 1;
3001 desc->ld_default_stripe_size = 0;
3002 desc->ld_default_stripe_offset = 0;
3003 desc->ld_pattern = 0;
3004 memcpy(&desc->ld_uuid, &obd->obd_uuid, sizeof(uuid));
3006 memcpy(data->ioc_inlbuf2, &obd->obd_uuid, sizeof(uuid));
3008 err = copy_to_user((void *)uarg, buf, len);
3011 obd_ioctl_freedata(buf, len);
3014 case LL_IOC_LOV_SETSTRIPE:
3015 err = obd_alloc_memmd(exp, karg);
3019 case LL_IOC_LOV_GETSTRIPE:
3020 err = osc_getstripe(karg, uarg);
3022 case OBD_IOC_CLIENT_RECOVER:
3023 err = ptlrpc_recover_import(obd->u.cli.cl_import,
3024 data->ioc_inlbuf1, 0);
3028 case IOC_OSC_SET_ACTIVE:
3029 err = ptlrpc_set_import_active(obd->u.cli.cl_import,
3032 case OBD_IOC_POLL_QUOTACHECK:
3033 err = osc_quota_poll_check(exp, (struct if_quotacheck *)karg);
3035 case OBD_IOC_PING_TARGET:
3036 err = ptlrpc_obd_ping(obd);
3039 CDEBUG(D_INODE, "unrecognised ioctl %#x by %s\n",
3040 cmd, current_comm());
3041 GOTO(out, err = -ENOTTY);
3044 module_put(THIS_MODULE);
3048 static int osc_get_info(const struct lu_env *env, struct obd_export *exp,
3049 obd_count keylen, void *key, __u32 *vallen, void *val,
3050 struct lov_stripe_md *lsm)
3053 if (!vallen || !val)
3056 if (KEY_IS(KEY_LOCK_TO_STRIPE)) {
3057 __u32 *stripe = val;
3058 *vallen = sizeof(*stripe);
3061 } else if (KEY_IS(KEY_LAST_ID)) {
3062 struct ptlrpc_request *req;
3067 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
3068 &RQF_OST_GET_INFO_LAST_ID);
3072 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
3073 RCL_CLIENT, keylen);
3074 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
3076 ptlrpc_request_free(req);
3080 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
3081 memcpy(tmp, key, keylen);
3083 req->rq_no_delay = req->rq_no_resend = 1;
3084 ptlrpc_request_set_replen(req);
3085 rc = ptlrpc_queue_wait(req);
3089 reply = req_capsule_server_get(&req->rq_pill, &RMF_OBD_ID);
3091 GOTO(out, rc = -EPROTO);
3093 *((obd_id *)val) = *reply;
3095 ptlrpc_req_finished(req);
3097 } else if (KEY_IS(KEY_FIEMAP)) {
3098 struct ll_fiemap_info_key *fm_key =
3099 (struct ll_fiemap_info_key *)key;
3100 struct ldlm_res_id res_id;
3101 ldlm_policy_data_t policy;
3102 struct lustre_handle lockh;
3103 ldlm_mode_t mode = 0;
3104 struct ptlrpc_request *req;
3105 struct ll_user_fiemap *reply;
3109 if (!(fm_key->fiemap.fm_flags & FIEMAP_FLAG_SYNC))
3112 policy.l_extent.start = fm_key->fiemap.fm_start &
3115 if (OBD_OBJECT_EOF - fm_key->fiemap.fm_length <=
3116 fm_key->fiemap.fm_start + PAGE_CACHE_SIZE - 1)
3117 policy.l_extent.end = OBD_OBJECT_EOF;
3119 policy.l_extent.end = (fm_key->fiemap.fm_start +
3120 fm_key->fiemap.fm_length +
3121 PAGE_CACHE_SIZE - 1) & CFS_PAGE_MASK;
3123 ostid_build_res_name(&fm_key->oa.o_oi, &res_id);
3124 mode = ldlm_lock_match(exp->exp_obd->obd_namespace,
3125 LDLM_FL_BLOCK_GRANTED |
3127 &res_id, LDLM_EXTENT, &policy,
3128 LCK_PR | LCK_PW, &lockh, 0);
3129 if (mode) { /* lock is cached on client */
3130 if (mode != LCK_PR) {
3131 ldlm_lock_addref(&lockh, LCK_PR);
3132 ldlm_lock_decref(&lockh, LCK_PW);
3134 } else { /* no cached lock, needs acquire lock on server side */
3135 fm_key->oa.o_valid |= OBD_MD_FLFLAGS;
3136 fm_key->oa.o_flags |= OBD_FL_SRVLOCK;
3140 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
3141 &RQF_OST_GET_INFO_FIEMAP);
3143 GOTO(drop_lock, rc = -ENOMEM);
3145 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_KEY,
3146 RCL_CLIENT, keylen);
3147 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
3148 RCL_CLIENT, *vallen);
3149 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
3150 RCL_SERVER, *vallen);
3152 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
3154 ptlrpc_request_free(req);
3155 GOTO(drop_lock, rc);
3158 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_KEY);
3159 memcpy(tmp, key, keylen);
3160 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_VAL);
3161 memcpy(tmp, val, *vallen);
3163 ptlrpc_request_set_replen(req);
3164 rc = ptlrpc_queue_wait(req);
3168 reply = req_capsule_server_get(&req->rq_pill, &RMF_FIEMAP_VAL);
3170 GOTO(fini_req, rc = -EPROTO);
3172 memcpy(val, reply, *vallen);
3174 ptlrpc_req_finished(req);
3177 ldlm_lock_decref(&lockh, LCK_PR);
3184 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
3185 obd_count keylen, void *key, obd_count vallen,
3186 void *val, struct ptlrpc_request_set *set)
3188 struct ptlrpc_request *req;
3189 struct obd_device *obd = exp->exp_obd;
3190 struct obd_import *imp = class_exp2cliimp(exp);
3195 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_SHUTDOWN, 10);
3197 if (KEY_IS(KEY_CHECKSUM)) {
3198 if (vallen != sizeof(int))
3200 exp->exp_obd->u.cli.cl_checksum = (*(int *)val) ? 1 : 0;
3204 if (KEY_IS(KEY_SPTLRPC_CONF)) {
3205 sptlrpc_conf_client_adapt(obd);
3209 if (KEY_IS(KEY_FLUSH_CTX)) {
3210 sptlrpc_import_flush_my_ctx(imp);
3214 if (KEY_IS(KEY_CACHE_SET)) {
3215 struct client_obd *cli = &obd->u.cli;
3217 LASSERT(cli->cl_cache == NULL); /* only once */
3218 cli->cl_cache = (struct cl_client_cache *)val;
3219 cfs_atomic_inc(&cli->cl_cache->ccc_users);
3220 cli->cl_lru_left = &cli->cl_cache->ccc_lru_left;
3222 /* add this osc into entity list */
3223 LASSERT(cfs_list_empty(&cli->cl_lru_osc));
3224 spin_lock(&cli->cl_cache->ccc_lru_lock);
3225 cfs_list_add(&cli->cl_lru_osc, &cli->cl_cache->ccc_lru);
3226 spin_unlock(&cli->cl_cache->ccc_lru_lock);
3231 if (KEY_IS(KEY_CACHE_LRU_SHRINK)) {
3232 struct client_obd *cli = &obd->u.cli;
3233 int nr = cfs_atomic_read(&cli->cl_lru_in_list) >> 1;
3234 int target = *(int *)val;
3236 nr = osc_lru_shrink(cli, min(nr, target));
3241 if (!set && !KEY_IS(KEY_GRANT_SHRINK))
3244 /* We pass all other commands directly to OST. Since nobody calls osc
3245 methods directly and everybody is supposed to go through LOV, we
3246 assume lov checked invalid values for us.
3247 The only recognised values so far are evict_by_nid and mds_conn.
3248 Even if something bad goes through, we'd get a -EINVAL from OST
3251 req = ptlrpc_request_alloc(imp, KEY_IS(KEY_GRANT_SHRINK) ?
3252 &RQF_OST_SET_GRANT_INFO :
3257 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
3258 RCL_CLIENT, keylen);
3259 if (!KEY_IS(KEY_GRANT_SHRINK))
3260 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
3261 RCL_CLIENT, vallen);
3262 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SET_INFO);
3264 ptlrpc_request_free(req);
3268 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
3269 memcpy(tmp, key, keylen);
3270 tmp = req_capsule_client_get(&req->rq_pill, KEY_IS(KEY_GRANT_SHRINK) ?
3273 memcpy(tmp, val, vallen);
3275 if (KEY_IS(KEY_GRANT_SHRINK)) {
3276 struct osc_grant_args *aa;
3279 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
3280 aa = ptlrpc_req_async_args(req);
3283 ptlrpc_req_finished(req);
3286 *oa = ((struct ost_body *)val)->oa;
3288 req->rq_interpret_reply = osc_shrink_grant_interpret;
3291 ptlrpc_request_set_replen(req);
3292 if (!KEY_IS(KEY_GRANT_SHRINK)) {
3293 LASSERT(set != NULL);
3294 ptlrpc_set_add_req(set, req);
3295 ptlrpc_check_set(NULL, set);
3297 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
3303 static int osc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
3304 struct obd_device *disk_obd, int *index)
3306 /* this code is not supposed to be used with LOD/OSP
3307 * to be removed soon */
3312 static int osc_llog_finish(struct obd_device *obd, int count)
3314 struct llog_ctxt *ctxt;
3318 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
3320 llog_cat_close(NULL, ctxt->loc_handle);
3321 llog_cleanup(NULL, ctxt);
3324 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
3326 llog_cleanup(NULL, ctxt);
3330 static int osc_reconnect(const struct lu_env *env,
3331 struct obd_export *exp, struct obd_device *obd,
3332 struct obd_uuid *cluuid,
3333 struct obd_connect_data *data,
3336 struct client_obd *cli = &obd->u.cli;
3338 if (data != NULL && (data->ocd_connect_flags & OBD_CONNECT_GRANT)) {
3341 client_obd_list_lock(&cli->cl_loi_list_lock);
3342 data->ocd_grant = (cli->cl_avail_grant + cli->cl_dirty) ?:
3343 2 * cli_brw_size(obd);
3344 lost_grant = cli->cl_lost_grant;
3345 cli->cl_lost_grant = 0;
3346 client_obd_list_unlock(&cli->cl_loi_list_lock);
3348 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d"
3349 " ocd_grant: %d, lost: %ld.\n", data->ocd_connect_flags,
3350 data->ocd_version, data->ocd_grant, lost_grant);
3356 static int osc_disconnect(struct obd_export *exp)
3358 struct obd_device *obd = class_exp2obd(exp);
3359 struct llog_ctxt *ctxt;
3362 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
3364 if (obd->u.cli.cl_conn_count == 1) {
3365 /* Flush any remaining cancel messages out to the
3367 llog_sync(ctxt, exp, 0);
3369 llog_ctxt_put(ctxt);
3371 CDEBUG(D_HA, "No LLOG_SIZE_REPL_CTXT found in obd %p\n",
3375 rc = client_disconnect_export(exp);
3377 * Initially we put del_shrink_grant before disconnect_export, but it
3378 * causes the following problem if setup (connect) and cleanup
3379 * (disconnect) are tangled together.
3380 * connect p1 disconnect p2
3381 * ptlrpc_connect_import
3382 * ............... class_manual_cleanup
3385 * ptlrpc_connect_interrupt
3387 * add this client to shrink list
3389 * Bang! pinger trigger the shrink.
3390 * So the osc should be disconnected from the shrink list, after we
3391 * are sure the import has been destroyed. BUG18662
3393 if (obd->u.cli.cl_import == NULL)
3394 osc_del_shrink_grant(&obd->u.cli);
3398 static int osc_import_event(struct obd_device *obd,
3399 struct obd_import *imp,
3400 enum obd_import_event event)
3402 struct client_obd *cli;
3406 LASSERT(imp->imp_obd == obd);
3409 case IMP_EVENT_DISCON: {
3411 client_obd_list_lock(&cli->cl_loi_list_lock);
3412 cli->cl_avail_grant = 0;
3413 cli->cl_lost_grant = 0;
3414 client_obd_list_unlock(&cli->cl_loi_list_lock);
3417 case IMP_EVENT_INACTIVE: {
3418 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
3421 case IMP_EVENT_INVALIDATE: {
3422 struct ldlm_namespace *ns = obd->obd_namespace;
3426 env = cl_env_get(&refcheck);
3430 /* all pages go to failing rpcs due to the invalid
3432 osc_io_unplug(env, cli, NULL, PDL_POLICY_ROUND);
3434 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
3435 cl_env_put(env, &refcheck);
3440 case IMP_EVENT_ACTIVE: {
3441 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
3444 case IMP_EVENT_OCD: {
3445 struct obd_connect_data *ocd = &imp->imp_connect_data;
3447 if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT)
3448 osc_init_grant(&obd->u.cli, ocd);
3451 if (ocd->ocd_connect_flags & OBD_CONNECT_REQPORTAL)
3452 imp->imp_client->cli_request_portal =OST_REQUEST_PORTAL;
3454 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
3457 case IMP_EVENT_DEACTIVATE: {
3458 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DEACTIVATE, NULL);
3461 case IMP_EVENT_ACTIVATE: {
3462 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVATE, NULL);
3466 CERROR("Unknown import event %d\n", event);
3473 * Determine whether the lock can be canceled before replaying the lock
3474 * during recovery, see bug16774 for detailed information.
3476 * \retval zero the lock can't be canceled
3477 * \retval other ok to cancel
3479 static int osc_cancel_for_recovery(struct ldlm_lock *lock)
3481 check_res_locked(lock->l_resource);
3484 * Cancel all unused extent lock in granted mode LCK_PR or LCK_CR.
3486 * XXX as a future improvement, we can also cancel unused write lock
3487 * if it doesn't have dirty data and active mmaps.
3489 if (lock->l_resource->lr_type == LDLM_EXTENT &&
3490 (lock->l_granted_mode == LCK_PR ||
3491 lock->l_granted_mode == LCK_CR) &&
3492 (osc_dlm_lock_pageref(lock) == 0))
3498 static int brw_queue_work(const struct lu_env *env, void *data)
3500 struct client_obd *cli = data;
3502 CDEBUG(D_CACHE, "Run writeback work for client obd %p.\n", cli);
3504 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
3508 int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
3510 struct lprocfs_static_vars lvars = { 0 };
3511 struct client_obd *cli = &obd->u.cli;
3516 rc = ptlrpcd_addref();
3520 rc = client_obd_setup(obd, lcfg);
3522 GOTO(out_ptlrpcd, rc);
3524 handler = ptlrpcd_alloc_work(cli->cl_import, brw_queue_work, cli);
3525 if (IS_ERR(handler))
3526 GOTO(out_client_setup, rc = PTR_ERR(handler));
3527 cli->cl_writeback_work = handler;
3529 rc = osc_quota_setup(obd);
3531 GOTO(out_ptlrpcd_work, rc);
3533 cli->cl_grant_shrink_interval = GRANT_SHRINK_INTERVAL;
3534 lprocfs_osc_init_vars(&lvars);
3535 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0) {
3536 lproc_osc_attach_seqstat(obd);
3537 sptlrpc_lprocfs_cliobd_attach(obd);
3538 ptlrpc_lprocfs_register_obd(obd);
3541 /* We need to allocate a few requests more, because
3542 * brw_interpret tries to create new requests before freeing
3543 * previous ones, Ideally we want to have 2x max_rpcs_in_flight
3544 * reserved, but I'm afraid that might be too much wasted RAM
3545 * in fact, so 2 is just my guess and still should work. */
3546 cli->cl_import->imp_rq_pool =
3547 ptlrpc_init_rq_pool(cli->cl_max_rpcs_in_flight + 2,
3549 ptlrpc_add_rqs_to_pool);
3551 CFS_INIT_LIST_HEAD(&cli->cl_grant_shrink_list);
3552 ns_register_cancel(obd->obd_namespace, osc_cancel_for_recovery);
3556 ptlrpcd_destroy_work(handler);
3558 client_obd_cleanup(obd);
3564 static int osc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
3570 case OBD_CLEANUP_EARLY: {
3571 struct obd_import *imp;
3572 imp = obd->u.cli.cl_import;
3573 CDEBUG(D_HA, "Deactivating import %s\n", obd->obd_name);
3574 /* ptlrpc_abort_inflight to stop an mds_lov_synchronize */
3575 ptlrpc_deactivate_import(imp);
3576 spin_lock(&imp->imp_lock);
3577 imp->imp_pingable = 0;
3578 spin_unlock(&imp->imp_lock);
3581 case OBD_CLEANUP_EXPORTS: {
3582 struct client_obd *cli = &obd->u.cli;
3584 * for echo client, export may be on zombie list, wait for
3585 * zombie thread to cull it, because cli.cl_import will be
3586 * cleared in client_disconnect_export():
3587 * class_export_destroy() -> obd_cleanup() ->
3588 * echo_device_free() -> echo_client_cleanup() ->
3589 * obd_disconnect() -> osc_disconnect() ->
3590 * client_disconnect_export()
3592 obd_zombie_barrier();
3593 if (cli->cl_writeback_work) {
3594 ptlrpcd_destroy_work(cli->cl_writeback_work);
3595 cli->cl_writeback_work = NULL;
3597 obd_cleanup_client_import(obd);
3598 ptlrpc_lprocfs_unregister_obd(obd);
3599 lprocfs_obd_cleanup(obd);
3600 rc = obd_llog_finish(obd, 0);
3602 CERROR("failed to cleanup llogging subsystems\n");
3609 int osc_cleanup(struct obd_device *obd)
3611 struct client_obd *cli = &obd->u.cli;
3617 if (cli->cl_cache != NULL) {
3618 LASSERT(cfs_atomic_read(&cli->cl_cache->ccc_users) > 0);
3619 spin_lock(&cli->cl_cache->ccc_lru_lock);
3620 cfs_list_del_init(&cli->cl_lru_osc);
3621 spin_unlock(&cli->cl_cache->ccc_lru_lock);
3622 cli->cl_lru_left = NULL;
3623 cfs_atomic_dec(&cli->cl_cache->ccc_users);
3624 cli->cl_cache = NULL;
3627 /* free memory of osc quota cache */
3628 osc_quota_cleanup(obd);
3630 rc = client_obd_cleanup(obd);
3636 int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg)
3638 struct lprocfs_static_vars lvars = { 0 };
3641 lprocfs_osc_init_vars(&lvars);
3643 switch (lcfg->lcfg_command) {
3645 rc = class_process_proc_param(PARAM_OSC, lvars.obd_vars,
3655 static int osc_process_config(struct obd_device *obd, obd_count len, void *buf)
3657 return osc_process_config_base(obd, buf);
3660 struct obd_ops osc_obd_ops = {
3661 .o_owner = THIS_MODULE,
3662 .o_setup = osc_setup,
3663 .o_precleanup = osc_precleanup,
3664 .o_cleanup = osc_cleanup,
3665 .o_add_conn = client_import_add_conn,
3666 .o_del_conn = client_import_del_conn,
3667 .o_connect = client_connect_import,
3668 .o_reconnect = osc_reconnect,
3669 .o_disconnect = osc_disconnect,
3670 .o_statfs = osc_statfs,
3671 .o_statfs_async = osc_statfs_async,
3672 .o_packmd = osc_packmd,
3673 .o_unpackmd = osc_unpackmd,
3674 .o_create = osc_create,
3675 .o_destroy = osc_destroy,
3676 .o_getattr = osc_getattr,
3677 .o_getattr_async = osc_getattr_async,
3678 .o_setattr = osc_setattr,
3679 .o_setattr_async = osc_setattr_async,
3681 .o_punch = osc_punch,
3683 .o_enqueue = osc_enqueue,
3684 .o_change_cbdata = osc_change_cbdata,
3685 .o_find_cbdata = osc_find_cbdata,
3686 .o_cancel = osc_cancel,
3687 .o_cancel_unused = osc_cancel_unused,
3688 .o_iocontrol = osc_iocontrol,
3689 .o_get_info = osc_get_info,
3690 .o_set_info_async = osc_set_info_async,
3691 .o_import_event = osc_import_event,
3692 .o_llog_init = osc_llog_init,
3693 .o_llog_finish = osc_llog_finish,
3694 .o_process_config = osc_process_config,
3695 .o_quotactl = osc_quotactl,
3696 .o_quotacheck = osc_quotacheck,
3699 extern struct lu_kmem_descr osc_caches[];
3700 extern spinlock_t osc_ast_guard;
3701 extern struct lock_class_key osc_ast_guard_class;
3703 int __init osc_init(void)
3705 struct lprocfs_static_vars lvars = { 0 };
3709 /* print an address of _any_ initialized kernel symbol from this
3710 * module, to allow debugging with gdb that doesn't support data
3711 * symbols from modules.*/
3712 CDEBUG(D_INFO, "Lustre OSC module (%p).\n", &osc_caches);
3714 rc = lu_kmem_init(osc_caches);
3718 lprocfs_osc_init_vars(&lvars);
3720 rc = class_register_type(&osc_obd_ops, NULL, lvars.module_vars,
3721 LUSTRE_OSC_NAME, &osc_device_type);
3723 lu_kmem_fini(osc_caches);
3727 spin_lock_init(&osc_ast_guard);
3728 lockdep_set_class(&osc_ast_guard, &osc_ast_guard_class);
3734 static void /*__exit*/ osc_exit(void)
3736 class_unregister_type(LUSTRE_OSC_NAME);
3737 lu_kmem_fini(osc_caches);
3740 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3741 MODULE_DESCRIPTION("Lustre Object Storage Client (OSC)");
3742 MODULE_LICENSE("GPL");
3744 cfs_module(osc, LUSTRE_VERSION_STRING, osc_init, osc_exit);
git://git.whamcloud.com / fs / lustre-release.git / blob