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) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
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
)
72 const struct cl_page_slice
*slice
;
74 slice
= cl_page_at(page
, &osc_device_type
);
75 LASSERT(slice
!= NULL
);
77 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
;
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
);
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 cl_page_list_move(qout
, qin
, page
);
167 oap
->oap_async_flags
= ASYNC_URGENT
|ASYNC_READY
;
168 oap
->oap_async_flags
|= ASYNC_COUNT_STABLE
;
170 osc_page_submit(env
, opg
, crt
, brw_flags
);
171 list_add_tail(&oap
->oap_pending_item
, &list
);
172 if (++queued
== max_pages
) {
174 result
= osc_queue_sync_pages(env
, osc
, &list
, cmd
,
182 result
= osc_queue_sync_pages(env
, osc
, &list
, cmd
, brw_flags
);
184 CDEBUG(D_INFO
, "%d/%d %d\n", qin
->pl_nr
, qout
->pl_nr
, result
);
185 return qout
->pl_nr
> 0 ? 0 : result
;
188 static void osc_page_touch_at(const struct lu_env
*env
,
189 struct cl_object
*obj
, pgoff_t idx
, unsigned to
)
191 struct lov_oinfo
*loi
= cl2osc(obj
)->oo_oinfo
;
192 struct cl_attr
*attr
= &osc_env_info(env
)->oti_attr
;
196 /* offset within stripe */
197 kms
= cl_offset(obj
, idx
) + to
;
199 cl_object_attr_lock(obj
);
203 * ll_inode_size_lock(inode, 0); lov_stripe_lock(lsm);
207 CDEBUG(D_INODE
, "stripe KMS %sincreasing "LPU64
"->"LPU64
" "LPU64
"\n",
208 kms
> loi
->loi_kms
? "" : "not ", loi
->loi_kms
, kms
,
209 loi
->loi_lvb
.lvb_size
);
212 if (kms
> loi
->loi_kms
) {
216 if (kms
> loi
->loi_lvb
.lvb_size
) {
217 attr
->cat_size
= kms
;
220 cl_object_attr_set(env
, obj
, attr
, valid
);
221 cl_object_attr_unlock(obj
);
225 * This is called when a page is accessed within file in a way that creates
226 * new page, if one were missing (i.e., if there were a hole at that place in
227 * the file, or accessed page is beyond the current file size). Examples:
228 * ->commit_write() and ->nopage() methods.
230 * Expand stripe KMS if necessary.
232 static void osc_page_touch(const struct lu_env
*env
,
233 struct osc_page
*opage
, unsigned to
)
235 struct cl_page
*page
= opage
->ops_cl
.cpl_page
;
236 struct cl_object
*obj
= opage
->ops_cl
.cpl_obj
;
238 osc_page_touch_at(env
, obj
, page
->cp_index
, to
);
242 * Implements cl_io_operations::cio_prepare_write() method for osc layer.
244 * \retval -EIO transfer initiated against this osc will most likely fail
245 * \retval 0 transfer initiated against this osc will most likely succeed.
247 * The reason for this check is to immediately return an error to the caller
248 * in the case of a deactivated import. Note, that import can be deactivated
249 * later, while pages, dirtied by this IO, are still in the cache, but this is
250 * irrelevant, because that would still return an error to the application (if
251 * it does fsync), but many applications don't do fsync because of performance
252 * issues, and we wanted to return an -EIO at write time to notify the
255 static int osc_io_prepare_write(const struct lu_env
*env
,
256 const struct cl_io_slice
*ios
,
257 const struct cl_page_slice
*slice
,
258 unsigned from
, unsigned to
)
260 struct osc_device
*dev
= lu2osc_dev(slice
->cpl_obj
->co_lu
.lo_dev
);
261 struct obd_import
*imp
= class_exp2cliimp(dev
->od_exp
);
262 struct osc_io
*oio
= cl2osc_io(env
, ios
);
267 * This implements OBD_BRW_CHECK logic from old client.
270 if (imp
== NULL
|| imp
->imp_invalid
)
272 if (result
== 0 && oio
->oi_lockless
)
273 /* this page contains `invalid' data, but who cares?
274 * nobody can access the invalid data.
275 * in osc_io_commit_write(), we're going to write exact
276 * [from, to) bytes of this page to OST. -jay */
277 cl_page_export(env
, slice
->cpl_page
, 1);
282 static int osc_io_commit_write(const struct lu_env
*env
,
283 const struct cl_io_slice
*ios
,
284 const struct cl_page_slice
*slice
,
285 unsigned from
, unsigned to
)
287 struct osc_io
*oio
= cl2osc_io(env
, ios
);
288 struct osc_page
*opg
= cl2osc_page(slice
);
289 struct osc_object
*obj
= cl2osc(opg
->ops_cl
.cpl_obj
);
290 struct osc_async_page
*oap
= &opg
->ops_oap
;
295 * XXX instead of calling osc_page_touch() here and in
296 * osc_io_fault_start() it might be more logical to introduce
297 * cl_page_touch() method, that generic cl_io_commit_write() and page
300 osc_page_touch(env
, cl2osc_page(slice
), to
);
301 if (!client_is_remote(osc_export(obj
)) &&
302 cfs_capable(CFS_CAP_SYS_RESOURCE
))
303 oap
->oap_brw_flags
|= OBD_BRW_NOQUOTA
;
305 if (oio
->oi_lockless
)
306 /* see osc_io_prepare_write() for lockless io handling. */
307 cl_page_clip(env
, slice
->cpl_page
, from
, to
);
312 static int osc_io_fault_start(const struct lu_env
*env
,
313 const struct cl_io_slice
*ios
)
316 struct cl_fault_io
*fio
;
321 fio
= &io
->u
.ci_fault
;
322 CDEBUG(D_INFO
, "%lu %d %d\n",
323 fio
->ft_index
, fio
->ft_writable
, fio
->ft_nob
);
325 * If mapping is writeable, adjust kms to cover this page,
326 * but do not extend kms beyond actual file size.
329 if (fio
->ft_writable
)
330 osc_page_touch_at(env
, ios
->cis_obj
,
331 fio
->ft_index
, fio
->ft_nob
);
335 static int osc_async_upcall(void *a
, int rc
)
337 struct osc_async_cbargs
*args
= a
;
340 complete(&args
->opc_sync
);
345 * Checks that there are no pages being written in the extent being truncated.
347 static int trunc_check_cb(const struct lu_env
*env
, struct cl_io
*io
,
348 struct cl_page
*page
, void *cbdata
)
350 const struct cl_page_slice
*slice
;
351 struct osc_page
*ops
;
352 struct osc_async_page
*oap
;
353 __u64 start
= *(__u64
*)cbdata
;
355 slice
= cl_page_at(page
, &osc_device_type
);
356 LASSERT(slice
!= NULL
);
357 ops
= cl2osc_page(slice
);
360 if (oap
->oap_cmd
& OBD_BRW_WRITE
&&
361 !list_empty(&oap
->oap_pending_item
))
362 CL_PAGE_DEBUG(D_ERROR
, env
, page
, "exists " LPU64
"/%s.\n",
363 start
, current
->comm
);
366 struct page
*vmpage
= cl_page_vmpage(env
, page
);
367 if (PageLocked(vmpage
))
368 CDEBUG(D_CACHE
, "page %p index %lu locked for %d.\n",
370 (oap
->oap_cmd
& OBD_BRW_RWMASK
));
373 return CLP_GANG_OKAY
;
376 static void osc_trunc_check(const struct lu_env
*env
, struct cl_io
*io
,
377 struct osc_io
*oio
, __u64 size
)
379 struct cl_object
*clob
;
383 clob
= oio
->oi_cl
.cis_obj
;
384 start
= cl_index(clob
, size
);
385 partial
= cl_offset(clob
, start
) < size
;
388 * Complain if there are pages in the truncated region.
390 cl_page_gang_lookup(env
, clob
, io
, start
+ partial
, CL_PAGE_EOF
,
391 trunc_check_cb
, (void *)&size
);
394 static int osc_io_setattr_start(const struct lu_env
*env
,
395 const struct cl_io_slice
*slice
)
397 struct cl_io
*io
= slice
->cis_io
;
398 struct osc_io
*oio
= cl2osc_io(env
, slice
);
399 struct cl_object
*obj
= slice
->cis_obj
;
400 struct lov_oinfo
*loi
= cl2osc(obj
)->oo_oinfo
;
401 struct cl_attr
*attr
= &osc_env_info(env
)->oti_attr
;
402 struct obdo
*oa
= &oio
->oi_oa
;
403 struct osc_async_cbargs
*cbargs
= &oio
->oi_cbarg
;
404 __u64 size
= io
->u
.ci_setattr
.sa_attr
.lvb_size
;
405 unsigned int ia_valid
= io
->u
.ci_setattr
.sa_valid
;
407 struct obd_info oinfo
= { { { 0 } } };
409 /* truncate cache dirty pages first */
410 if (cl_io_is_trunc(io
))
411 result
= osc_cache_truncate_start(env
, oio
, cl2osc(obj
), size
);
413 if (result
== 0 && oio
->oi_lockless
== 0) {
414 cl_object_attr_lock(obj
);
415 result
= cl_object_attr_get(env
, obj
, attr
);
417 struct ost_lvb
*lvb
= &io
->u
.ci_setattr
.sa_attr
;
418 unsigned int cl_valid
= 0;
420 if (ia_valid
& ATTR_SIZE
) {
421 attr
->cat_size
= attr
->cat_kms
= size
;
422 cl_valid
= (CAT_SIZE
| CAT_KMS
);
424 if (ia_valid
& ATTR_MTIME_SET
) {
425 attr
->cat_mtime
= lvb
->lvb_mtime
;
426 cl_valid
|= CAT_MTIME
;
428 if (ia_valid
& ATTR_ATIME_SET
) {
429 attr
->cat_atime
= lvb
->lvb_atime
;
430 cl_valid
|= CAT_ATIME
;
432 if (ia_valid
& ATTR_CTIME_SET
) {
433 attr
->cat_ctime
= lvb
->lvb_ctime
;
434 cl_valid
|= CAT_CTIME
;
436 result
= cl_object_attr_set(env
, obj
, attr
, cl_valid
);
438 cl_object_attr_unlock(obj
);
440 memset(oa
, 0, sizeof(*oa
));
442 oa
->o_oi
= loi
->loi_oi
;
443 oa
->o_mtime
= attr
->cat_mtime
;
444 oa
->o_atime
= attr
->cat_atime
;
445 oa
->o_ctime
= attr
->cat_ctime
;
446 oa
->o_valid
= OBD_MD_FLID
| OBD_MD_FLGROUP
| OBD_MD_FLATIME
|
447 OBD_MD_FLCTIME
| OBD_MD_FLMTIME
;
448 if (ia_valid
& ATTR_SIZE
) {
450 oa
->o_blocks
= OBD_OBJECT_EOF
;
451 oa
->o_valid
|= OBD_MD_FLSIZE
| OBD_MD_FLBLOCKS
;
453 if (oio
->oi_lockless
) {
454 oa
->o_flags
= OBD_FL_SRVLOCK
;
455 oa
->o_valid
|= OBD_MD_FLFLAGS
;
458 LASSERT(oio
->oi_lockless
== 0);
462 oinfo
.oi_capa
= io
->u
.ci_setattr
.sa_capa
;
463 init_completion(&cbargs
->opc_sync
);
465 if (ia_valid
& ATTR_SIZE
)
466 result
= osc_punch_base(osc_export(cl2osc(obj
)),
467 &oinfo
, osc_async_upcall
,
468 cbargs
, PTLRPCD_SET
);
470 result
= osc_setattr_async_base(osc_export(cl2osc(obj
)),
473 cbargs
, PTLRPCD_SET
);
474 cbargs
->opc_rpc_sent
= result
== 0;
479 static void osc_io_setattr_end(const struct lu_env
*env
,
480 const struct cl_io_slice
*slice
)
482 struct cl_io
*io
= slice
->cis_io
;
483 struct osc_io
*oio
= cl2osc_io(env
, slice
);
484 struct cl_object
*obj
= slice
->cis_obj
;
485 struct osc_async_cbargs
*cbargs
= &oio
->oi_cbarg
;
488 if (cbargs
->opc_rpc_sent
) {
489 wait_for_completion(&cbargs
->opc_sync
);
490 result
= io
->ci_result
= cbargs
->opc_rc
;
493 if (oio
->oi_lockless
) {
494 /* lockless truncate */
495 struct osc_device
*osd
= lu2osc_dev(obj
->co_lu
.lo_dev
);
497 LASSERT(cl_io_is_trunc(io
));
498 /* XXX: Need a lock. */
499 osd
->od_stats
.os_lockless_truncates
++;
503 if (cl_io_is_trunc(io
)) {
504 __u64 size
= io
->u
.ci_setattr
.sa_attr
.lvb_size
;
505 osc_trunc_check(env
, io
, oio
, size
);
506 if (oio
->oi_trunc
!= NULL
) {
507 osc_cache_truncate_end(env
, oio
, cl2osc(obj
));
508 oio
->oi_trunc
= NULL
;
513 static int osc_io_read_start(const struct lu_env
*env
,
514 const struct cl_io_slice
*slice
)
516 struct osc_io
*oio
= cl2osc_io(env
, slice
);
517 struct cl_object
*obj
= slice
->cis_obj
;
518 struct cl_attr
*attr
= &osc_env_info(env
)->oti_attr
;
522 if (oio
->oi_lockless
== 0) {
523 cl_object_attr_lock(obj
);
524 result
= cl_object_attr_get(env
, obj
, attr
);
526 attr
->cat_atime
= LTIME_S(CFS_CURRENT_TIME
);
527 result
= cl_object_attr_set(env
, obj
, attr
,
530 cl_object_attr_unlock(obj
);
535 static int osc_io_write_start(const struct lu_env
*env
,
536 const struct cl_io_slice
*slice
)
538 struct osc_io
*oio
= cl2osc_io(env
, slice
);
539 struct cl_object
*obj
= slice
->cis_obj
;
540 struct cl_attr
*attr
= &osc_env_info(env
)->oti_attr
;
544 if (oio
->oi_lockless
== 0) {
545 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_DELAY_SETTIME
, 1);
546 cl_object_attr_lock(obj
);
547 result
= cl_object_attr_get(env
, obj
, attr
);
549 attr
->cat_mtime
= attr
->cat_ctime
=
550 LTIME_S(CFS_CURRENT_TIME
);
551 result
= cl_object_attr_set(env
, obj
, attr
,
552 CAT_MTIME
| CAT_CTIME
);
554 cl_object_attr_unlock(obj
);
559 static int osc_fsync_ost(const struct lu_env
*env
, struct osc_object
*obj
,
560 struct cl_fsync_io
*fio
)
562 struct osc_io
*oio
= osc_env_io(env
);
563 struct obdo
*oa
= &oio
->oi_oa
;
564 struct obd_info
*oinfo
= &oio
->oi_info
;
565 struct lov_oinfo
*loi
= obj
->oo_oinfo
;
566 struct osc_async_cbargs
*cbargs
= &oio
->oi_cbarg
;
570 memset(oa
, 0, sizeof(*oa
));
571 oa
->o_oi
= loi
->loi_oi
;
572 oa
->o_valid
= OBD_MD_FLID
| OBD_MD_FLGROUP
;
574 /* reload size abd blocks for start and end of sync range */
575 oa
->o_size
= fio
->fi_start
;
576 oa
->o_blocks
= fio
->fi_end
;
577 oa
->o_valid
|= OBD_MD_FLSIZE
| OBD_MD_FLBLOCKS
;
579 obdo_set_parent_fid(oa
, fio
->fi_fid
);
581 memset(oinfo
, 0, sizeof(*oinfo
));
583 oinfo
->oi_capa
= fio
->fi_capa
;
584 init_completion(&cbargs
->opc_sync
);
586 rc
= osc_sync_base(osc_export(obj
), oinfo
, osc_async_upcall
, cbargs
,
591 static int osc_io_fsync_start(const struct lu_env
*env
,
592 const struct cl_io_slice
*slice
)
594 struct cl_io
*io
= slice
->cis_io
;
595 struct cl_fsync_io
*fio
= &io
->u
.ci_fsync
;
596 struct cl_object
*obj
= slice
->cis_obj
;
597 struct osc_object
*osc
= cl2osc(obj
);
598 pgoff_t start
= cl_index(obj
, fio
->fi_start
);
599 pgoff_t end
= cl_index(obj
, fio
->fi_end
);
603 if (fio
->fi_end
== OBD_OBJECT_EOF
)
606 result
= osc_cache_writeback_range(env
, osc
, start
, end
, 0,
607 fio
->fi_mode
== CL_FSYNC_DISCARD
);
609 fio
->fi_nr_written
+= result
;
612 if (fio
->fi_mode
== CL_FSYNC_ALL
) {
615 /* we have to wait for writeback to finish before we can
616 * send OST_SYNC RPC. This is bad because it causes extents
617 * to be written osc by osc. However, we usually start
618 * writeback before CL_FSYNC_ALL so this won't have any real
620 rc
= osc_cache_wait_range(env
, osc
, start
, end
);
623 rc
= osc_fsync_ost(env
, osc
, fio
);
631 static void osc_io_fsync_end(const struct lu_env
*env
,
632 const struct cl_io_slice
*slice
)
634 struct cl_fsync_io
*fio
= &slice
->cis_io
->u
.ci_fsync
;
635 struct cl_object
*obj
= slice
->cis_obj
;
636 pgoff_t start
= cl_index(obj
, fio
->fi_start
);
637 pgoff_t end
= cl_index(obj
, fio
->fi_end
);
640 if (fio
->fi_mode
== CL_FSYNC_LOCAL
) {
641 result
= osc_cache_wait_range(env
, cl2osc(obj
), start
, end
);
642 } else if (fio
->fi_mode
== CL_FSYNC_ALL
) {
643 struct osc_io
*oio
= cl2osc_io(env
, slice
);
644 struct osc_async_cbargs
*cbargs
= &oio
->oi_cbarg
;
646 wait_for_completion(&cbargs
->opc_sync
);
648 result
= cbargs
->opc_rc
;
650 slice
->cis_io
->ci_result
= result
;
653 static void osc_io_end(const struct lu_env
*env
,
654 const struct cl_io_slice
*slice
)
656 struct osc_io
*oio
= cl2osc_io(env
, slice
);
658 if (oio
->oi_active
) {
659 osc_extent_release(env
, oio
->oi_active
);
660 oio
->oi_active
= NULL
;
664 static const struct cl_io_operations osc_io_ops
= {
667 .cio_start
= osc_io_read_start
,
668 .cio_fini
= osc_io_fini
671 .cio_start
= osc_io_write_start
,
672 .cio_end
= osc_io_end
,
673 .cio_fini
= osc_io_fini
676 .cio_start
= osc_io_setattr_start
,
677 .cio_end
= osc_io_setattr_end
680 .cio_start
= osc_io_fault_start
,
681 .cio_end
= osc_io_end
,
682 .cio_fini
= osc_io_fini
685 .cio_start
= osc_io_fsync_start
,
686 .cio_end
= osc_io_fsync_end
,
687 .cio_fini
= osc_io_fini
690 .cio_fini
= osc_io_fini
695 .cio_submit
= osc_io_submit
698 .cio_submit
= osc_io_submit
701 .cio_prepare_write
= osc_io_prepare_write
,
702 .cio_commit_write
= osc_io_commit_write
705 /*****************************************************************************
707 * Transfer operations.
711 static int osc_req_prep(const struct lu_env
*env
,
712 const struct cl_req_slice
*slice
)
717 static void osc_req_completion(const struct lu_env
*env
,
718 const struct cl_req_slice
*slice
, int ioret
)
722 or = cl2osc_req(slice
);
723 OBD_SLAB_FREE_PTR(or, osc_req_kmem
);
727 * Implementation of struct cl_req_operations::cro_attr_set() for osc
728 * layer. osc is responsible for struct obdo::o_id and struct obdo::o_seq
731 static void osc_req_attr_set(const struct lu_env
*env
,
732 const struct cl_req_slice
*slice
,
733 const struct cl_object
*obj
,
734 struct cl_req_attr
*attr
, obd_valid flags
)
736 struct lov_oinfo
*oinfo
;
737 struct cl_req
*clerq
;
738 struct cl_page
*apage
; /* _some_ page in @clerq */
739 struct cl_lock
*lock
; /* _some_ lock protecting @apage */
740 struct osc_lock
*olck
;
741 struct osc_page
*opg
;
745 oinfo
= cl2osc(obj
)->oo_oinfo
;
746 lvb
= &oinfo
->loi_lvb
;
749 if ((flags
& OBD_MD_FLMTIME
) != 0) {
750 oa
->o_mtime
= lvb
->lvb_mtime
;
751 oa
->o_valid
|= OBD_MD_FLMTIME
;
753 if ((flags
& OBD_MD_FLATIME
) != 0) {
754 oa
->o_atime
= lvb
->lvb_atime
;
755 oa
->o_valid
|= OBD_MD_FLATIME
;
757 if ((flags
& OBD_MD_FLCTIME
) != 0) {
758 oa
->o_ctime
= lvb
->lvb_ctime
;
759 oa
->o_valid
|= OBD_MD_FLCTIME
;
761 if (flags
& OBD_MD_FLGROUP
) {
762 ostid_set_seq(&oa
->o_oi
, ostid_seq(&oinfo
->loi_oi
));
763 oa
->o_valid
|= OBD_MD_FLGROUP
;
765 if (flags
& OBD_MD_FLID
) {
766 ostid_set_id(&oa
->o_oi
, ostid_id(&oinfo
->loi_oi
));
767 oa
->o_valid
|= OBD_MD_FLID
;
769 if (flags
& OBD_MD_FLHANDLE
) {
770 clerq
= slice
->crs_req
;
771 LASSERT(!list_empty(&clerq
->crq_pages
));
772 apage
= container_of(clerq
->crq_pages
.next
,
773 struct cl_page
, cp_flight
);
774 opg
= osc_cl_page_osc(apage
);
775 apage
= opg
->ops_cl
.cpl_page
; /* now apage is a sub-page */
776 lock
= cl_lock_at_page(env
, apage
->cp_obj
, apage
, NULL
, 1, 1);
778 struct cl_object_header
*head
;
779 struct cl_lock
*scan
;
781 head
= cl_object_header(apage
->cp_obj
);
782 list_for_each_entry(scan
, &head
->coh_locks
,
784 CL_LOCK_DEBUG(D_ERROR
, env
, scan
,
786 CL_PAGE_DEBUG(D_ERROR
, env
, apage
,
787 "dump uncover page!\n");
788 libcfs_debug_dumpstack(NULL
);
792 olck
= osc_lock_at(lock
);
793 LASSERT(olck
!= NULL
);
794 LASSERT(ergo(opg
->ops_srvlock
, olck
->ols_lock
== NULL
));
795 /* check for lockless io. */
796 if (olck
->ols_lock
!= NULL
) {
797 oa
->o_handle
= olck
->ols_lock
->l_remote_handle
;
798 oa
->o_valid
|= OBD_MD_FLHANDLE
;
800 cl_lock_put(env
, lock
);
804 static const struct cl_req_operations osc_req_ops
= {
805 .cro_prep
= osc_req_prep
,
806 .cro_attr_set
= osc_req_attr_set
,
807 .cro_completion
= osc_req_completion
811 int osc_io_init(const struct lu_env
*env
,
812 struct cl_object
*obj
, struct cl_io
*io
)
814 struct osc_io
*oio
= osc_env_io(env
);
816 CL_IO_SLICE_CLEAN(oio
, oi_cl
);
817 cl_io_slice_add(io
, &oio
->oi_cl
, obj
, &osc_io_ops
);
821 int osc_req_init(const struct lu_env
*env
, struct cl_device
*dev
,
827 OBD_SLAB_ALLOC_PTR_GFP(or, osc_req_kmem
, __GFP_IO
);
829 cl_req_slice_add(req
, &or->or_cl
, dev
, &osc_req_ops
);