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,
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10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
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18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
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21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2008, 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.
36 * Implementation of cl_io for OSC layer.
38 * Author: Nikita Danilov <nikita.danilov@sun.com>
39 * Author: Jinshan Xiong <jinshan.xiong@whamcloud.com>
42 #define DEBUG_SUBSYSTEM S_OSC
44 #include "osc_cl_internal.h"
50 /*****************************************************************************
56 static struct osc_req *cl2osc_req(const struct cl_req_slice *slice)
58 LINVRNT(slice->crs_dev->cd_lu_dev.ld_type == &osc_device_type);
59 return container_of0(slice, struct osc_req, or_cl);
62 static struct osc_io *cl2osc_io(const struct lu_env *env,
63 const struct cl_io_slice *slice)
65 struct osc_io *oio = container_of0(slice, struct osc_io, oi_cl);
66 LINVRNT(oio == osc_env_io(env));
70 static struct osc_page *osc_cl_page_osc(struct cl_page *page,
71 struct osc_object *osc)
73 const struct cl_page_slice *slice;
76 slice = cl_object_page_slice(&osc->oo_cl, page);
78 slice = cl_page_at(page, &osc_device_type);
79 LASSERT(slice != NULL);
81 return cl2osc_page(slice);
85 /*****************************************************************************
91 static void osc_io_fini(const struct lu_env *env, const struct cl_io_slice *io)
96 * An implementation of cl_io_operations::cio_io_submit() method for osc
97 * layer. Iterates over pages in the in-queue, prepares each for io by calling
98 * cl_page_prep() and then either submits them through osc_io_submit_page()
99 * or, if page is already submitted, changes osc flags through
100 * osc_set_async_flags().
102 static int osc_io_submit(const struct lu_env *env,
103 const struct cl_io_slice *ios,
104 enum cl_req_type crt, struct cl_2queue *queue)
106 struct cl_page *page;
108 struct client_obd *cli = NULL;
109 struct osc_object *osc = NULL; /* to keep gcc happy */
110 struct osc_page *opg;
112 struct list_head list = LIST_HEAD_INIT(list);
114 struct cl_page_list *qin = &queue->c2_qin;
115 struct cl_page_list *qout = &queue->c2_qout;
122 LASSERT(qin->pl_nr > 0);
124 CDEBUG(D_CACHE, "%d %d\n", qin->pl_nr, crt);
126 osc = cl2osc(ios->cis_obj);
128 max_pages = cli->cl_max_pages_per_rpc;
130 cmd = crt == CRT_WRITE ? OBD_BRW_WRITE : OBD_BRW_READ;
131 brw_flags = osc_io_srvlock(cl2osc_io(env, ios)) ? OBD_BRW_SRVLOCK : 0;
134 * NOTE: here @page is a top-level page. This is done to avoid
135 * creation of sub-page-list.
137 cl_page_list_for_each_safe(page, tmp, qin) {
138 struct osc_async_page *oap;
144 opg = osc_cl_page_osc(page, osc);
146 LASSERT(osc == oap->oap_obj);
148 if (!list_empty(&oap->oap_pending_item) ||
149 !list_empty(&oap->oap_rpc_item)) {
150 CDEBUG(D_CACHE, "Busy oap %p page %p for submit.\n",
156 result = cl_page_prep(env, io, page, crt);
159 if (result != -EALREADY)
162 * Handle -EALREADY error: for read case, the page is
163 * already in UPTODATE state; for write, the page
170 spin_lock(&oap->oap_lock);
171 oap->oap_async_flags = ASYNC_URGENT|ASYNC_READY;
172 oap->oap_async_flags |= ASYNC_COUNT_STABLE;
173 spin_unlock(&oap->oap_lock);
175 osc_page_submit(env, opg, crt, brw_flags);
176 list_add_tail(&oap->oap_pending_item, &list);
178 if (page->cp_sync_io != NULL)
179 cl_page_list_move(qout, qin, page);
181 cl_page_list_del(env, qin, page);
183 if (++queued == max_pages) {
185 result = osc_queue_sync_pages(env, osc, &list, cmd,
193 result = osc_queue_sync_pages(env, osc, &list, cmd, brw_flags);
195 CDEBUG(D_INFO, "%d/%d %d\n", qin->pl_nr, qout->pl_nr, result);
196 return qout->pl_nr > 0 ? 0 : result;
200 * This is called when a page is accessed within file in a way that creates
201 * new page, if one were missing (i.e., if there were a hole at that place in
202 * the file, or accessed page is beyond the current file size).
204 * Expand stripe KMS if necessary.
206 static void osc_page_touch_at(const struct lu_env *env,
207 struct cl_object *obj, pgoff_t idx, size_t to)
209 struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
210 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
214 /* offset within stripe */
215 kms = cl_offset(obj, idx) + to;
217 cl_object_attr_lock(obj);
221 * ll_inode_size_lock(inode, 0); lov_stripe_lock(lsm);
225 CDEBUG(D_INODE, "stripe KMS %sincreasing "LPU64"->"LPU64" "LPU64"\n",
226 kms > loi->loi_kms ? "" : "not ", loi->loi_kms, kms,
227 loi->loi_lvb.lvb_size);
229 attr->cat_mtime = attr->cat_ctime = LTIME_S(CFS_CURRENT_TIME);
230 valid = CAT_MTIME | CAT_CTIME;
231 if (kms > loi->loi_kms) {
235 if (kms > loi->loi_lvb.lvb_size) {
236 attr->cat_size = kms;
239 cl_object_attr_set(env, obj, attr, valid);
240 cl_object_attr_unlock(obj);
243 static int osc_io_commit_async(const struct lu_env *env,
244 const struct cl_io_slice *ios,
245 struct cl_page_list *qin, int from, int to,
248 struct cl_io *io = ios->cis_io;
249 struct osc_io *oio = cl2osc_io(env, ios);
250 struct osc_object *osc = cl2osc(ios->cis_obj);
251 struct cl_page *page;
252 struct cl_page *last_page;
253 struct osc_page *opg;
257 LASSERT(qin->pl_nr > 0);
259 /* Handle partial page cases */
260 last_page = cl_page_list_last(qin);
261 if (oio->oi_lockless) {
262 page = cl_page_list_first(qin);
263 if (page == last_page) {
264 cl_page_clip(env, page, from, to);
267 cl_page_clip(env, page, from, PAGE_SIZE);
269 cl_page_clip(env, last_page, 0, to);
273 while (qin->pl_nr > 0) {
274 struct osc_async_page *oap;
276 page = cl_page_list_first(qin);
277 opg = osc_cl_page_osc(page, osc);
280 if (!list_empty(&oap->oap_rpc_item)) {
281 CDEBUG(D_CACHE, "Busy oap %p page %p for submit.\n",
287 /* The page may be already in dirty cache. */
288 if (list_empty(&oap->oap_pending_item)) {
289 result = osc_page_cache_add(env, &opg->ops_cl, io);
294 osc_page_touch_at(env, osc2cl(osc), osc_index(opg),
295 page == last_page ? to : PAGE_SIZE);
297 cl_page_list_del(env, qin, page);
299 (*cb)(env, io, page);
300 /* Can't access page any more. Page can be in transfer and
301 * complete at any time. */
304 /* for sync write, kernel will wait for this page to be flushed before
305 * osc_io_end() is called, so release it earlier.
306 * for mkwrite(), it's known there is no further pages. */
307 if (cl_io_is_sync_write(io) && oio->oi_active != NULL) {
308 osc_extent_release(env, oio->oi_active);
309 oio->oi_active = NULL;
312 CDEBUG(D_INFO, "%d %d\n", qin->pl_nr, result);
316 static int osc_io_rw_iter_init(const struct lu_env *env,
317 const struct cl_io_slice *ios)
319 struct cl_io *io = ios->cis_io;
320 struct osc_io *oio = osc_env_io(env);
321 struct osc_object *osc = cl2osc(ios->cis_obj);
322 struct client_obd *cli = osc_cli(osc);
324 unsigned long npages;
325 unsigned long max_pages;
328 if (cl_io_is_append(io))
331 npages = io->u.ci_rw.crw_count >> PAGE_CACHE_SHIFT;
332 if (io->u.ci_rw.crw_pos & ~CFS_PAGE_MASK)
335 max_pages = cli->cl_max_pages_per_rpc * cli->cl_max_rpcs_in_flight;
336 if (npages > max_pages)
339 c = atomic_long_read(cli->cl_lru_left);
340 if (c < npages && osc_lru_reclaim(cli) > 0)
341 c = atomic_long_read(cli->cl_lru_left);
342 while (c >= npages) {
343 if (c == atomic_long_cmpxchg(cli->cl_lru_left, c, c - npages)) {
344 oio->oi_lru_reserved = npages;
347 c = atomic_long_read(cli->cl_lru_left);
353 static void osc_io_rw_iter_fini(const struct lu_env *env,
354 const struct cl_io_slice *ios)
356 struct osc_io *oio = osc_env_io(env);
357 struct osc_object *osc = cl2osc(ios->cis_obj);
358 struct client_obd *cli = osc_cli(osc);
360 if (oio->oi_lru_reserved > 0) {
361 atomic_long_add(oio->oi_lru_reserved, cli->cl_lru_left);
362 oio->oi_lru_reserved = 0;
364 oio->oi_write_osclock = NULL;
367 static int osc_io_fault_start(const struct lu_env *env,
368 const struct cl_io_slice *ios)
371 struct cl_fault_io *fio;
375 fio = &io->u.ci_fault;
376 CDEBUG(D_INFO, "%lu %d %zu\n",
377 fio->ft_index, fio->ft_writable, fio->ft_nob);
379 * If mapping is writeable, adjust kms to cover this page,
380 * but do not extend kms beyond actual file size.
383 if (fio->ft_writable)
384 osc_page_touch_at(env, ios->cis_obj,
385 fio->ft_index, fio->ft_nob);
389 static int osc_async_upcall(void *a, int rc)
391 struct osc_async_cbargs *args = a;
394 complete(&args->opc_sync);
399 * Checks that there are no pages being written in the extent being truncated.
401 static int trunc_check_cb(const struct lu_env *env, struct cl_io *io,
402 struct osc_page *ops , void *cbdata)
404 struct cl_page *page = ops->ops_cl.cpl_page;
405 struct osc_async_page *oap;
406 __u64 start = *(__u64 *)cbdata;
409 if (oap->oap_cmd & OBD_BRW_WRITE &&
410 !list_empty(&oap->oap_pending_item))
411 CL_PAGE_DEBUG(D_ERROR, env, page, "exists " LPU64 "/%s.\n",
412 start, current->comm);
414 if (PageLocked(page->cp_vmpage))
415 CDEBUG(D_CACHE, "page %p index %lu locked for %d.\n",
416 ops, osc_index(ops), oap->oap_cmd & OBD_BRW_RWMASK);
418 return CLP_GANG_OKAY;
421 static void osc_trunc_check(const struct lu_env *env, struct cl_io *io,
422 struct osc_io *oio, __u64 size)
424 struct cl_object *clob;
428 clob = oio->oi_cl.cis_obj;
429 start = cl_index(clob, size);
430 partial = cl_offset(clob, start) < size;
433 * Complain if there are pages in the truncated region.
435 osc_page_gang_lookup(env, io, cl2osc(clob),
436 start + partial, CL_PAGE_EOF,
437 trunc_check_cb, (void *)&size);
440 static int osc_io_setattr_start(const struct lu_env *env,
441 const struct cl_io_slice *slice)
443 struct cl_io *io = slice->cis_io;
444 struct osc_io *oio = cl2osc_io(env, slice);
445 struct cl_object *obj = slice->cis_obj;
446 struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
447 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
448 struct obdo *oa = &oio->oi_oa;
449 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
450 __u64 size = io->u.ci_setattr.sa_attr.lvb_size;
451 unsigned int ia_valid = io->u.ci_setattr.sa_valid;
453 struct obd_info oinfo = { { { 0 } } };
455 /* truncate cache dirty pages first */
456 if (cl_io_is_trunc(io))
457 result = osc_cache_truncate_start(env, oio, cl2osc(obj), size);
459 if (result == 0 && oio->oi_lockless == 0) {
460 cl_object_attr_lock(obj);
461 result = cl_object_attr_get(env, obj, attr);
463 struct ost_lvb *lvb = &io->u.ci_setattr.sa_attr;
464 unsigned int cl_valid = 0;
466 if (ia_valid & ATTR_SIZE) {
467 attr->cat_size = attr->cat_kms = size;
468 cl_valid = (CAT_SIZE | CAT_KMS);
470 if (ia_valid & ATTR_MTIME_SET) {
471 attr->cat_mtime = lvb->lvb_mtime;
472 cl_valid |= CAT_MTIME;
474 if (ia_valid & ATTR_ATIME_SET) {
475 attr->cat_atime = lvb->lvb_atime;
476 cl_valid |= CAT_ATIME;
478 if (ia_valid & ATTR_CTIME_SET) {
479 attr->cat_ctime = lvb->lvb_ctime;
480 cl_valid |= CAT_CTIME;
482 result = cl_object_attr_set(env, obj, attr, cl_valid);
484 cl_object_attr_unlock(obj);
486 memset(oa, 0, sizeof(*oa));
488 oa->o_oi = loi->loi_oi;
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 oinfo.oi_capa = io->u.ci_setattr.sa_capa;
509 init_completion(&cbargs->opc_sync);
511 if (ia_valid & ATTR_SIZE)
512 result = osc_punch_base(osc_export(cl2osc(obj)),
513 &oinfo, osc_async_upcall,
514 cbargs, PTLRPCD_SET);
516 result = osc_setattr_async_base(osc_export(cl2osc(obj)),
519 cbargs, PTLRPCD_SET);
520 cbargs->opc_rpc_sent = result == 0;
525 static void osc_io_setattr_end(const struct lu_env *env,
526 const struct cl_io_slice *slice)
528 struct cl_io *io = slice->cis_io;
529 struct osc_io *oio = cl2osc_io(env, slice);
530 struct cl_object *obj = slice->cis_obj;
531 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
534 if (cbargs->opc_rpc_sent) {
535 wait_for_completion(&cbargs->opc_sync);
536 result = 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;
551 osc_trunc_check(env, io, oio, size);
552 if (oio->oi_trunc != NULL) {
553 osc_cache_truncate_end(env, oio, cl2osc(obj));
554 oio->oi_trunc = NULL;
559 static int osc_io_read_start(const struct lu_env *env,
560 const struct cl_io_slice *slice)
562 struct cl_object *obj = slice->cis_obj;
563 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 = LTIME_S(CFS_CURRENT_TIME);
570 rc = cl_object_attr_set(env, obj, attr, CAT_ATIME);
571 cl_object_attr_unlock(obj);
577 static int osc_io_write_start(const struct lu_env *env,
578 const struct cl_io_slice *slice)
580 struct cl_object *obj = slice->cis_obj;
581 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
585 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_DELAY_SETTIME, 1);
586 cl_object_attr_lock(obj);
587 attr->cat_mtime = attr->cat_ctime = LTIME_S(CFS_CURRENT_TIME);
588 rc = cl_object_attr_set(env, obj, attr, CAT_MTIME | CAT_CTIME);
589 cl_object_attr_unlock(obj);
594 static int osc_fsync_ost(const struct lu_env *env, struct osc_object *obj,
595 struct cl_fsync_io *fio)
597 struct osc_io *oio = osc_env_io(env);
598 struct obdo *oa = &oio->oi_oa;
599 struct obd_info *oinfo = &oio->oi_info;
600 struct lov_oinfo *loi = obj->oo_oinfo;
601 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
605 memset(oa, 0, sizeof(*oa));
606 oa->o_oi = loi->loi_oi;
607 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
609 /* reload size abd blocks for start and end of sync range */
610 oa->o_size = fio->fi_start;
611 oa->o_blocks = fio->fi_end;
612 oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
614 obdo_set_parent_fid(oa, fio->fi_fid);
616 memset(oinfo, 0, sizeof(*oinfo));
618 oinfo->oi_capa = fio->fi_capa;
619 init_completion(&cbargs->opc_sync);
621 rc = osc_sync_base(osc_export(obj), oinfo, osc_async_upcall, cbargs,
626 static int osc_io_fsync_start(const struct lu_env *env,
627 const struct cl_io_slice *slice)
629 struct cl_io *io = slice->cis_io;
630 struct cl_fsync_io *fio = &io->u.ci_fsync;
631 struct cl_object *obj = slice->cis_obj;
632 struct osc_object *osc = cl2osc(obj);
633 pgoff_t start = cl_index(obj, fio->fi_start);
634 pgoff_t end = cl_index(obj, fio->fi_end);
638 if (fio->fi_end == OBD_OBJECT_EOF)
641 result = osc_cache_writeback_range(env, osc, start, end, 0,
642 fio->fi_mode == CL_FSYNC_DISCARD);
644 fio->fi_nr_written += result;
647 if (fio->fi_mode == CL_FSYNC_ALL) {
650 /* we have to wait for writeback to finish before we can
651 * send OST_SYNC RPC. This is bad because it causes extents
652 * to be written osc by osc. However, we usually start
653 * writeback before CL_FSYNC_ALL so this won't have any real
655 rc = osc_cache_wait_range(env, osc, start, end);
658 rc = osc_fsync_ost(env, osc, fio);
666 static void osc_io_fsync_end(const struct lu_env *env,
667 const struct cl_io_slice *slice)
669 struct cl_fsync_io *fio = &slice->cis_io->u.ci_fsync;
670 struct cl_object *obj = slice->cis_obj;
671 pgoff_t start = cl_index(obj, fio->fi_start);
672 pgoff_t end = cl_index(obj, fio->fi_end);
675 if (fio->fi_mode == CL_FSYNC_LOCAL) {
676 result = osc_cache_wait_range(env, cl2osc(obj), start, end);
677 } else if (fio->fi_mode == CL_FSYNC_ALL) {
678 struct osc_io *oio = cl2osc_io(env, slice);
679 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
681 wait_for_completion(&cbargs->opc_sync);
683 result = cbargs->opc_rc;
685 slice->cis_io->ci_result = result;
688 static void osc_io_end(const struct lu_env *env,
689 const struct cl_io_slice *slice)
691 struct osc_io *oio = cl2osc_io(env, slice);
693 if (oio->oi_active) {
694 osc_extent_release(env, oio->oi_active);
695 oio->oi_active = NULL;
699 static const struct cl_io_operations osc_io_ops = {
702 .cio_start = osc_io_read_start,
703 .cio_fini = osc_io_fini
706 .cio_iter_init = osc_io_rw_iter_init,
707 .cio_iter_fini = osc_io_rw_iter_fini,
708 .cio_start = osc_io_write_start,
709 .cio_end = osc_io_end,
710 .cio_fini = osc_io_fini
713 .cio_start = osc_io_setattr_start,
714 .cio_end = osc_io_setattr_end
717 .cio_start = osc_io_fault_start,
718 .cio_end = osc_io_end,
719 .cio_fini = osc_io_fini
722 .cio_start = osc_io_fsync_start,
723 .cio_end = osc_io_fsync_end,
724 .cio_fini = osc_io_fini
727 .cio_fini = osc_io_fini
730 .cio_submit = osc_io_submit,
731 .cio_commit_async = osc_io_commit_async
734 /*****************************************************************************
736 * Transfer operations.
740 static int osc_req_prep(const struct lu_env *env,
741 const struct cl_req_slice *slice)
746 static void osc_req_completion(const struct lu_env *env,
747 const struct cl_req_slice *slice, int ioret)
751 or = cl2osc_req(slice);
752 OBD_SLAB_FREE_PTR(or, osc_req_kmem);
756 * Implementation of struct cl_req_operations::cro_attr_set() for osc
757 * layer. osc is responsible for struct obdo::o_id and struct obdo::o_seq
760 static void osc_req_attr_set(const struct lu_env *env,
761 const struct cl_req_slice *slice,
762 const struct cl_object *obj,
763 struct cl_req_attr *attr, obd_valid flags)
765 struct lov_oinfo *oinfo;
766 struct cl_req *clerq;
767 struct cl_page *apage; /* _some_ page in @clerq */
768 struct ldlm_lock *lock; /* _some_ lock protecting @apage */
769 struct osc_page *opg;
773 oinfo = cl2osc(obj)->oo_oinfo;
774 lvb = &oinfo->loi_lvb;
777 if ((flags & OBD_MD_FLMTIME) != 0) {
778 oa->o_mtime = lvb->lvb_mtime;
779 oa->o_valid |= OBD_MD_FLMTIME;
781 if ((flags & OBD_MD_FLATIME) != 0) {
782 oa->o_atime = lvb->lvb_atime;
783 oa->o_valid |= OBD_MD_FLATIME;
785 if ((flags & OBD_MD_FLCTIME) != 0) {
786 oa->o_ctime = lvb->lvb_ctime;
787 oa->o_valid |= OBD_MD_FLCTIME;
789 if (flags & OBD_MD_FLGROUP) {
790 ostid_set_seq(&oa->o_oi, ostid_seq(&oinfo->loi_oi));
791 oa->o_valid |= OBD_MD_FLGROUP;
793 if (flags & OBD_MD_FLID) {
794 ostid_set_id(&oa->o_oi, ostid_id(&oinfo->loi_oi));
795 oa->o_valid |= OBD_MD_FLID;
797 if (flags & OBD_MD_FLHANDLE) {
798 clerq = slice->crs_req;
799 LASSERT(!list_empty(&clerq->crq_pages));
800 apage = container_of(clerq->crq_pages.next,
801 struct cl_page, cp_flight);
802 opg = osc_cl_page_osc(apage, NULL);
803 lock = osc_dlmlock_at_pgoff(env, cl2osc(obj), osc_index(opg),
805 if (lock == NULL && !opg->ops_srvlock) {
806 struct ldlm_resource *res;
807 struct ldlm_res_id *resname;
809 CL_PAGE_DEBUG(D_ERROR, env, apage, "uncovered page!\n");
811 resname = &osc_env_info(env)->oti_resname;
812 ostid_build_res_name(&oinfo->loi_oi, resname);
813 res = ldlm_resource_get(
814 osc_export(cl2osc(obj))->exp_obd->obd_namespace,
815 NULL, resname, LDLM_EXTENT, 0);
816 ldlm_resource_dump(D_ERROR, res);
818 libcfs_debug_dumpstack(NULL);
822 /* check for lockless io. */
824 oa->o_handle = lock->l_remote_handle;
825 oa->o_valid |= OBD_MD_FLHANDLE;
831 static const struct cl_req_operations osc_req_ops = {
832 .cro_prep = osc_req_prep,
833 .cro_attr_set = osc_req_attr_set,
834 .cro_completion = osc_req_completion
838 int osc_io_init(const struct lu_env *env,
839 struct cl_object *obj, struct cl_io *io)
841 struct osc_io *oio = osc_env_io(env);
843 CL_IO_SLICE_CLEAN(oio, oi_cl);
844 cl_io_slice_add(io, &oio->oi_cl, obj, &osc_io_ops);
848 int osc_req_init(const struct lu_env *env, struct cl_device *dev,
854 OBD_SLAB_ALLOC_PTR_GFP(or, osc_req_kmem, GFP_NOFS);
856 cl_req_slice_add(req, &or->or_cl, dev, &osc_req_ops);