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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2015, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * Implementation of cl_io for OSC layer.
34 * Author: Nikita Danilov <nikita.danilov@sun.com>
35 * Author: Jinshan Xiong <jinshan.xiong@whamcloud.com>
38 #define DEBUG_SUBSYSTEM S_OSC
40 #include "osc_cl_internal.h"
46 /*****************************************************************************
52 static struct osc_req *cl2osc_req(const struct cl_req_slice *slice)
54 LINVRNT(slice->crs_dev->cd_lu_dev.ld_type == &osc_device_type);
55 return container_of0(slice, struct osc_req, or_cl);
58 static struct osc_io *cl2osc_io(const struct lu_env *env,
59 const struct cl_io_slice *slice)
61 struct osc_io *oio = container_of0(slice, struct osc_io, oi_cl);
63 LINVRNT(oio == osc_env_io(env));
67 static struct osc_page *osc_cl_page_osc(struct cl_page *page,
68 struct osc_object *osc)
70 const struct cl_page_slice *slice;
73 slice = cl_object_page_slice(&osc->oo_cl, page);
75 slice = cl_page_at(page, &osc_device_type);
78 return cl2osc_page(slice);
81 /*****************************************************************************
87 static void osc_io_fini(const struct lu_env *env, const struct cl_io_slice *io)
92 * An implementation of cl_io_operations::cio_io_submit() method for osc
93 * layer. Iterates over pages in the in-queue, prepares each for io by calling
94 * cl_page_prep() and then either submits them through osc_io_submit_page()
95 * or, if page is already submitted, changes osc flags through
96 * osc_set_async_flags().
98 static int osc_io_submit(const struct lu_env *env,
99 const struct cl_io_slice *ios,
100 enum cl_req_type crt, struct cl_2queue *queue)
102 struct cl_page *page;
104 struct client_obd *cli = NULL;
105 struct osc_object *osc = NULL; /* to keep gcc happy */
106 struct osc_page *opg;
110 struct cl_page_list *qin = &queue->c2_qin;
111 struct cl_page_list *qout = &queue->c2_qout;
112 unsigned int queued = 0;
116 unsigned int max_pages;
118 LASSERT(qin->pl_nr > 0);
120 CDEBUG(D_CACHE, "%d %d\n", qin->pl_nr, crt);
122 osc = cl2osc(ios->cis_obj);
124 max_pages = cli->cl_max_pages_per_rpc;
126 cmd = crt == CRT_WRITE ? OBD_BRW_WRITE : OBD_BRW_READ;
127 brw_flags = osc_io_srvlock(cl2osc_io(env, ios)) ? OBD_BRW_SRVLOCK : 0;
130 * NOTE: here @page is a top-level page. This is done to avoid
131 * creation of sub-page-list.
133 cl_page_list_for_each_safe(page, tmp, qin) {
134 struct osc_async_page *oap;
140 opg = osc_cl_page_osc(page, osc);
142 LASSERT(osc == oap->oap_obj);
144 if (!list_empty(&oap->oap_pending_item) ||
145 !list_empty(&oap->oap_rpc_item)) {
146 CDEBUG(D_CACHE, "Busy oap %p page %p for submit.\n",
152 result = cl_page_prep(env, io, page, crt);
155 if (result != -EALREADY)
158 * Handle -EALREADY error: for read case, the page is
159 * already in UPTODATE state; for write, the page
166 spin_lock(&oap->oap_lock);
167 oap->oap_async_flags = ASYNC_URGENT | ASYNC_READY;
168 oap->oap_async_flags |= ASYNC_COUNT_STABLE;
169 spin_unlock(&oap->oap_lock);
171 osc_page_submit(env, opg, crt, brw_flags);
172 list_add_tail(&oap->oap_pending_item, &list);
174 if (page->cp_sync_io)
175 cl_page_list_move(qout, qin, page);
177 cl_page_list_del(env, qin, page);
179 if (++queued == max_pages) {
181 result = osc_queue_sync_pages(env, osc, &list, cmd,
189 result = osc_queue_sync_pages(env, osc, &list, cmd, brw_flags);
191 CDEBUG(D_INFO, "%d/%d %d\n", qin->pl_nr, qout->pl_nr, result);
192 return qout->pl_nr > 0 ? 0 : result;
196 * This is called when a page is accessed within file in a way that creates
197 * new page, if one were missing (i.e., if there were a hole at that place in
198 * the file, or accessed page is beyond the current file size).
200 * Expand stripe KMS if necessary.
202 static void osc_page_touch_at(const struct lu_env *env,
203 struct cl_object *obj, pgoff_t idx, size_t to)
205 struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
206 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
210 /* offset within stripe */
211 kms = cl_offset(obj, idx) + to;
213 cl_object_attr_lock(obj);
217 * ll_inode_size_lock(inode, 0); lov_stripe_lock(lsm);
221 CDEBUG(D_INODE, "stripe KMS %sincreasing %llu->%llu %llu\n",
222 kms > loi->loi_kms ? "" : "not ", loi->loi_kms, kms,
223 loi->loi_lvb.lvb_size);
225 attr->cat_ctime = LTIME_S(CURRENT_TIME);
226 attr->cat_mtime = attr->cat_ctime;
227 valid = CAT_MTIME | CAT_CTIME;
228 if (kms > loi->loi_kms) {
232 if (kms > loi->loi_lvb.lvb_size) {
233 attr->cat_size = kms;
236 cl_object_attr_update(env, obj, attr, valid);
237 cl_object_attr_unlock(obj);
240 static int osc_io_commit_async(const struct lu_env *env,
241 const struct cl_io_slice *ios,
242 struct cl_page_list *qin, int from, int to,
245 struct cl_io *io = ios->cis_io;
246 struct osc_io *oio = cl2osc_io(env, ios);
247 struct osc_object *osc = cl2osc(ios->cis_obj);
248 struct cl_page *page;
249 struct cl_page *last_page;
250 struct osc_page *opg;
253 LASSERT(qin->pl_nr > 0);
255 /* Handle partial page cases */
256 last_page = cl_page_list_last(qin);
257 if (oio->oi_lockless) {
258 page = cl_page_list_first(qin);
259 if (page == last_page) {
260 cl_page_clip(env, page, from, to);
263 cl_page_clip(env, page, from, PAGE_SIZE);
265 cl_page_clip(env, last_page, 0, to);
269 while (qin->pl_nr > 0) {
270 struct osc_async_page *oap;
272 page = cl_page_list_first(qin);
273 opg = osc_cl_page_osc(page, osc);
276 if (!list_empty(&oap->oap_rpc_item)) {
277 CDEBUG(D_CACHE, "Busy oap %p page %p for submit.\n",
283 /* The page may be already in dirty cache. */
284 if (list_empty(&oap->oap_pending_item)) {
285 result = osc_page_cache_add(env, &opg->ops_cl, io);
290 osc_page_touch_at(env, osc2cl(osc), osc_index(opg),
291 page == last_page ? to : PAGE_SIZE);
293 cl_page_list_del(env, qin, page);
295 (*cb)(env, io, page);
296 /* Can't access page any more. Page can be in transfer and
297 * complete at any time.
301 /* for sync write, kernel will wait for this page to be flushed before
302 * osc_io_end() is called, so release it earlier.
303 * for mkwrite(), it's known there is no further pages.
305 if (cl_io_is_sync_write(io) && oio->oi_active) {
306 osc_extent_release(env, oio->oi_active);
307 oio->oi_active = NULL;
310 CDEBUG(D_INFO, "%d %d\n", qin->pl_nr, result);
314 static int osc_io_rw_iter_init(const struct lu_env *env,
315 const struct cl_io_slice *ios)
317 struct cl_io *io = ios->cis_io;
318 struct osc_io *oio = osc_env_io(env);
319 struct osc_object *osc = cl2osc(ios->cis_obj);
320 struct client_obd *cli = osc_cli(osc);
322 unsigned long npages;
323 unsigned long max_pages;
325 if (cl_io_is_append(io))
328 npages = io->u.ci_rw.crw_count >> PAGE_SHIFT;
329 if (io->u.ci_rw.crw_pos & ~PAGE_MASK)
332 max_pages = cli->cl_max_pages_per_rpc * cli->cl_max_rpcs_in_flight;
333 if (npages > max_pages)
336 c = atomic_long_read(cli->cl_lru_left);
337 if (c < npages && osc_lru_reclaim(cli) > 0)
338 c = atomic_long_read(cli->cl_lru_left);
339 while (c >= npages) {
340 if (c == atomic_long_cmpxchg(cli->cl_lru_left, c, c - npages)) {
341 oio->oi_lru_reserved = npages;
344 c = atomic_long_read(cli->cl_lru_left);
350 static void osc_io_rw_iter_fini(const struct lu_env *env,
351 const struct cl_io_slice *ios)
353 struct osc_io *oio = osc_env_io(env);
354 struct osc_object *osc = cl2osc(ios->cis_obj);
355 struct client_obd *cli = osc_cli(osc);
357 if (oio->oi_lru_reserved > 0) {
358 atomic_long_add(oio->oi_lru_reserved, cli->cl_lru_left);
359 oio->oi_lru_reserved = 0;
361 oio->oi_write_osclock = NULL;
364 static int osc_io_fault_start(const struct lu_env *env,
365 const struct cl_io_slice *ios)
368 struct cl_fault_io *fio;
371 fio = &io->u.ci_fault;
372 CDEBUG(D_INFO, "%lu %d %zu\n",
373 fio->ft_index, fio->ft_writable, fio->ft_nob);
375 * If mapping is writeable, adjust kms to cover this page,
376 * but do not extend kms beyond actual file size.
379 if (fio->ft_writable)
380 osc_page_touch_at(env, ios->cis_obj,
381 fio->ft_index, fio->ft_nob);
385 static int osc_async_upcall(void *a, int rc)
387 struct osc_async_cbargs *args = a;
390 complete(&args->opc_sync);
395 * Checks that there are no pages being written in the extent being truncated.
397 static int trunc_check_cb(const struct lu_env *env, struct cl_io *io,
398 struct osc_page *ops, void *cbdata)
400 struct cl_page *page = ops->ops_cl.cpl_page;
401 struct osc_async_page *oap;
402 __u64 start = *(__u64 *)cbdata;
405 if (oap->oap_cmd & OBD_BRW_WRITE &&
406 !list_empty(&oap->oap_pending_item))
407 CL_PAGE_DEBUG(D_ERROR, env, page, "exists %llu/%s.\n",
408 start, current->comm);
410 if (PageLocked(page->cp_vmpage))
411 CDEBUG(D_CACHE, "page %p index %lu locked for %d.\n",
412 ops, osc_index(ops), oap->oap_cmd & OBD_BRW_RWMASK);
414 return CLP_GANG_OKAY;
417 static void osc_trunc_check(const struct lu_env *env, struct cl_io *io,
418 struct osc_io *oio, __u64 size)
420 struct cl_object *clob;
424 clob = oio->oi_cl.cis_obj;
425 start = cl_index(clob, size);
426 partial = cl_offset(clob, start) < size;
429 * Complain if there are pages in the truncated region.
431 osc_page_gang_lookup(env, io, cl2osc(clob),
432 start + partial, CL_PAGE_EOF,
433 trunc_check_cb, (void *)&size);
436 static int osc_io_setattr_start(const struct lu_env *env,
437 const struct cl_io_slice *slice)
439 struct cl_io *io = slice->cis_io;
440 struct osc_io *oio = cl2osc_io(env, slice);
441 struct cl_object *obj = slice->cis_obj;
442 struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
443 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
444 struct obdo *oa = &oio->oi_oa;
445 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
446 __u64 size = io->u.ci_setattr.sa_attr.lvb_size;
447 unsigned int ia_valid = io->u.ci_setattr.sa_valid;
449 struct obd_info oinfo = { };
451 /* truncate cache dirty pages first */
452 if (cl_io_is_trunc(io))
453 result = osc_cache_truncate_start(env, oio, cl2osc(obj), size);
455 if (result == 0 && oio->oi_lockless == 0) {
456 cl_object_attr_lock(obj);
457 result = cl_object_attr_get(env, obj, attr);
459 struct ost_lvb *lvb = &io->u.ci_setattr.sa_attr;
460 unsigned int cl_valid = 0;
462 if (ia_valid & ATTR_SIZE) {
463 attr->cat_size = size;
464 attr->cat_kms = size;
465 cl_valid = CAT_SIZE | CAT_KMS;
467 if (ia_valid & ATTR_MTIME_SET) {
468 attr->cat_mtime = lvb->lvb_mtime;
469 cl_valid |= CAT_MTIME;
471 if (ia_valid & ATTR_ATIME_SET) {
472 attr->cat_atime = lvb->lvb_atime;
473 cl_valid |= CAT_ATIME;
475 if (ia_valid & ATTR_CTIME_SET) {
476 attr->cat_ctime = lvb->lvb_ctime;
477 cl_valid |= CAT_CTIME;
479 result = cl_object_attr_update(env, obj, attr,
482 cl_object_attr_unlock(obj);
484 memset(oa, 0, sizeof(*oa));
486 oa->o_oi = loi->loi_oi;
487 obdo_set_parent_fid(oa, io->u.ci_setattr.sa_parent_fid);
488 oa->o_stripe_idx = io->u.ci_setattr.sa_stripe_index;
489 oa->o_mtime = attr->cat_mtime;
490 oa->o_atime = attr->cat_atime;
491 oa->o_ctime = attr->cat_ctime;
492 oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP | OBD_MD_FLATIME |
493 OBD_MD_FLCTIME | OBD_MD_FLMTIME;
494 if (ia_valid & ATTR_SIZE) {
496 oa->o_blocks = OBD_OBJECT_EOF;
497 oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
499 if (oio->oi_lockless) {
500 oa->o_flags = OBD_FL_SRVLOCK;
501 oa->o_valid |= OBD_MD_FLFLAGS;
504 LASSERT(oio->oi_lockless == 0);
508 init_completion(&cbargs->opc_sync);
510 if (ia_valid & ATTR_SIZE)
511 result = osc_punch_base(osc_export(cl2osc(obj)),
512 &oinfo, osc_async_upcall,
513 cbargs, PTLRPCD_SET);
515 result = osc_setattr_async_base(osc_export(cl2osc(obj)),
518 cbargs, PTLRPCD_SET);
519 cbargs->opc_rpc_sent = result == 0;
524 static void osc_io_setattr_end(const struct lu_env *env,
525 const struct cl_io_slice *slice)
527 struct cl_io *io = slice->cis_io;
528 struct osc_io *oio = cl2osc_io(env, slice);
529 struct cl_object *obj = slice->cis_obj;
530 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
533 if (cbargs->opc_rpc_sent) {
534 wait_for_completion(&cbargs->opc_sync);
535 result = cbargs->opc_rc;
536 io->ci_result = cbargs->opc_rc;
539 if (oio->oi_lockless) {
540 /* lockless truncate */
541 struct osc_device *osd = lu2osc_dev(obj->co_lu.lo_dev);
543 LASSERT(cl_io_is_trunc(io));
544 /* XXX: Need a lock. */
545 osd->od_stats.os_lockless_truncates++;
549 if (cl_io_is_trunc(io)) {
550 __u64 size = io->u.ci_setattr.sa_attr.lvb_size;
552 osc_trunc_check(env, io, oio, size);
554 osc_cache_truncate_end(env, oio, cl2osc(obj));
555 oio->oi_trunc = NULL;
560 static int osc_io_read_start(const struct lu_env *env,
561 const struct cl_io_slice *slice)
563 struct cl_object *obj = slice->cis_obj;
564 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
567 if (!slice->cis_io->ci_noatime) {
568 cl_object_attr_lock(obj);
569 attr->cat_atime = ktime_get_real_seconds();
570 rc = cl_object_attr_update(env, obj, attr, CAT_ATIME);
571 cl_object_attr_unlock(obj);
576 static int osc_io_write_start(const struct lu_env *env,
577 const struct cl_io_slice *slice)
579 struct cl_object *obj = slice->cis_obj;
580 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
583 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_DELAY_SETTIME, 1);
584 cl_object_attr_lock(obj);
585 attr->cat_ctime = ktime_get_real_seconds();
586 attr->cat_mtime = attr->cat_ctime;
587 rc = cl_object_attr_update(env, obj, attr, CAT_MTIME | CAT_CTIME);
588 cl_object_attr_unlock(obj);
593 static int osc_fsync_ost(const struct lu_env *env, struct osc_object *obj,
594 struct cl_fsync_io *fio)
596 struct osc_io *oio = osc_env_io(env);
597 struct obdo *oa = &oio->oi_oa;
598 struct obd_info *oinfo = &oio->oi_info;
599 struct lov_oinfo *loi = obj->oo_oinfo;
600 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
603 memset(oa, 0, sizeof(*oa));
604 oa->o_oi = loi->loi_oi;
605 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
607 /* reload size abd blocks for start and end of sync range */
608 oa->o_size = fio->fi_start;
609 oa->o_blocks = fio->fi_end;
610 oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
612 obdo_set_parent_fid(oa, fio->fi_fid);
614 memset(oinfo, 0, sizeof(*oinfo));
616 init_completion(&cbargs->opc_sync);
618 rc = osc_sync_base(osc_export(obj), oinfo, osc_async_upcall, cbargs,
623 static int osc_io_fsync_start(const struct lu_env *env,
624 const struct cl_io_slice *slice)
626 struct cl_io *io = slice->cis_io;
627 struct cl_fsync_io *fio = &io->u.ci_fsync;
628 struct cl_object *obj = slice->cis_obj;
629 struct osc_object *osc = cl2osc(obj);
630 pgoff_t start = cl_index(obj, fio->fi_start);
631 pgoff_t end = cl_index(obj, fio->fi_end);
634 if (fio->fi_end == OBD_OBJECT_EOF)
637 result = osc_cache_writeback_range(env, osc, start, end, 0,
638 fio->fi_mode == CL_FSYNC_DISCARD);
640 fio->fi_nr_written += result;
643 if (fio->fi_mode == CL_FSYNC_ALL) {
646 /* we have to wait for writeback to finish before we can
647 * send OST_SYNC RPC. This is bad because it causes extents
648 * to be written osc by osc. However, we usually start
649 * writeback before CL_FSYNC_ALL so this won't have any real
652 rc = osc_cache_wait_range(env, osc, start, end);
655 rc = osc_fsync_ost(env, osc, fio);
663 static void osc_io_fsync_end(const struct lu_env *env,
664 const struct cl_io_slice *slice)
666 struct cl_fsync_io *fio = &slice->cis_io->u.ci_fsync;
667 struct cl_object *obj = slice->cis_obj;
668 pgoff_t start = cl_index(obj, fio->fi_start);
669 pgoff_t end = cl_index(obj, fio->fi_end);
672 if (fio->fi_mode == CL_FSYNC_LOCAL) {
673 result = osc_cache_wait_range(env, cl2osc(obj), start, end);
674 } else if (fio->fi_mode == CL_FSYNC_ALL) {
675 struct osc_io *oio = cl2osc_io(env, slice);
676 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
678 wait_for_completion(&cbargs->opc_sync);
680 result = cbargs->opc_rc;
682 slice->cis_io->ci_result = result;
685 static void osc_io_end(const struct lu_env *env,
686 const struct cl_io_slice *slice)
688 struct osc_io *oio = cl2osc_io(env, slice);
690 if (oio->oi_active) {
691 osc_extent_release(env, oio->oi_active);
692 oio->oi_active = NULL;
696 static const struct cl_io_operations osc_io_ops = {
699 .cio_start = osc_io_read_start,
700 .cio_fini = osc_io_fini
703 .cio_iter_init = osc_io_rw_iter_init,
704 .cio_iter_fini = osc_io_rw_iter_fini,
705 .cio_start = osc_io_write_start,
706 .cio_end = osc_io_end,
707 .cio_fini = osc_io_fini
710 .cio_start = osc_io_setattr_start,
711 .cio_end = osc_io_setattr_end
714 .cio_start = osc_io_fault_start,
715 .cio_end = osc_io_end,
716 .cio_fini = osc_io_fini
719 .cio_start = osc_io_fsync_start,
720 .cio_end = osc_io_fsync_end,
721 .cio_fini = osc_io_fini
724 .cio_fini = osc_io_fini
727 .cio_submit = osc_io_submit,
728 .cio_commit_async = osc_io_commit_async
731 /*****************************************************************************
733 * Transfer operations.
737 static int osc_req_prep(const struct lu_env *env,
738 const struct cl_req_slice *slice)
743 static void osc_req_completion(const struct lu_env *env,
744 const struct cl_req_slice *slice, int ioret)
748 or = cl2osc_req(slice);
749 kmem_cache_free(osc_req_kmem, or);
753 * Implementation of struct cl_req_operations::cro_attr_set() for osc
754 * layer. osc is responsible for struct obdo::o_id and struct obdo::o_seq
757 static void osc_req_attr_set(const struct lu_env *env,
758 const struct cl_req_slice *slice,
759 const struct cl_object *obj,
760 struct cl_req_attr *attr, u64 flags)
762 struct lov_oinfo *oinfo;
763 struct cl_req *clerq;
764 struct cl_page *apage; /* _some_ page in @clerq */
765 struct ldlm_lock *lock; /* _some_ lock protecting @apage */
766 struct osc_page *opg;
770 oinfo = cl2osc(obj)->oo_oinfo;
771 lvb = &oinfo->loi_lvb;
774 if ((flags & OBD_MD_FLMTIME) != 0) {
775 oa->o_mtime = lvb->lvb_mtime;
776 oa->o_valid |= OBD_MD_FLMTIME;
778 if ((flags & OBD_MD_FLATIME) != 0) {
779 oa->o_atime = lvb->lvb_atime;
780 oa->o_valid |= OBD_MD_FLATIME;
782 if ((flags & OBD_MD_FLCTIME) != 0) {
783 oa->o_ctime = lvb->lvb_ctime;
784 oa->o_valid |= OBD_MD_FLCTIME;
786 if (flags & OBD_MD_FLGROUP) {
787 ostid_set_seq(&oa->o_oi, ostid_seq(&oinfo->loi_oi));
788 oa->o_valid |= OBD_MD_FLGROUP;
790 if (flags & OBD_MD_FLID) {
791 ostid_set_id(&oa->o_oi, ostid_id(&oinfo->loi_oi));
792 oa->o_valid |= OBD_MD_FLID;
794 if (flags & OBD_MD_FLHANDLE) {
795 clerq = slice->crs_req;
796 LASSERT(!list_empty(&clerq->crq_pages));
797 apage = container_of(clerq->crq_pages.next,
798 struct cl_page, cp_flight);
799 opg = osc_cl_page_osc(apage, NULL);
800 lock = osc_dlmlock_at_pgoff(env, cl2osc(obj), osc_index(opg),
802 if (!lock && !opg->ops_srvlock) {
803 struct ldlm_resource *res;
804 struct ldlm_res_id *resname;
806 CL_PAGE_DEBUG(D_ERROR, env, apage, "uncovered page!\n");
808 resname = &osc_env_info(env)->oti_resname;
809 ostid_build_res_name(&oinfo->loi_oi, resname);
810 res = ldlm_resource_get(
811 osc_export(cl2osc(obj))->exp_obd->obd_namespace,
812 NULL, resname, LDLM_EXTENT, 0);
813 ldlm_resource_dump(D_ERROR, res);
819 /* check for lockless io. */
821 oa->o_handle = lock->l_remote_handle;
822 oa->o_valid |= OBD_MD_FLHANDLE;
828 static const struct cl_req_operations osc_req_ops = {
829 .cro_prep = osc_req_prep,
830 .cro_attr_set = osc_req_attr_set,
831 .cro_completion = osc_req_completion
834 int osc_io_init(const struct lu_env *env,
835 struct cl_object *obj, struct cl_io *io)
837 struct osc_io *oio = osc_env_io(env);
839 CL_IO_SLICE_CLEAN(oio, oi_cl);
840 cl_io_slice_add(io, &oio->oi_cl, obj, &osc_io_ops);
844 int osc_req_init(const struct lu_env *env, struct cl_device *dev,
850 or = kmem_cache_zalloc(osc_req_kmem, GFP_NOFS);
852 cl_req_slice_add(req, &or->or_cl, dev, &osc_req_ops);