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, 2017, 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 <lustre_obdo.h>
41 #include <lustre_osc.h>
42 #include <linux/pagevec.h>
43 #include <linux/falloc.h>
45 #include "osc_internal.h"
51 /*****************************************************************************
57 static void osc_io_fini(const struct lu_env *env, const struct cl_io_slice *io)
61 void osc_read_ahead_release(const struct lu_env *env, void *cbdata)
63 struct ldlm_lock *dlmlock = cbdata;
64 struct lustre_handle lockh;
66 ldlm_lock2handle(dlmlock, &lockh);
67 ldlm_lock_decref(&lockh, LCK_PR);
68 LDLM_LOCK_PUT(dlmlock);
70 EXPORT_SYMBOL(osc_read_ahead_release);
72 static int osc_io_read_ahead(const struct lu_env *env,
73 const struct cl_io_slice *ios,
74 pgoff_t start, struct cl_read_ahead *ra)
76 struct osc_object *osc = cl2osc(ios->cis_obj);
77 struct ldlm_lock *dlmlock;
78 int result = -ENODATA;
81 dlmlock = osc_dlmlock_at_pgoff(env, osc, start, 0);
82 if (dlmlock != NULL) {
83 LASSERT(dlmlock->l_ast_data == osc);
84 if (dlmlock->l_req_mode != LCK_PR) {
85 struct lustre_handle lockh;
86 ldlm_lock2handle(dlmlock, &lockh);
87 ldlm_lock_addref(&lockh, LCK_PR);
88 ldlm_lock_decref(&lockh, dlmlock->l_req_mode);
91 ra->cra_rpc_pages = osc_cli(osc)->cl_max_pages_per_rpc;
92 ra->cra_end_idx = cl_index(osc2cl(osc),
93 dlmlock->l_policy_data.l_extent.end);
94 ra->cra_release = osc_read_ahead_release;
95 ra->cra_cbdata = dlmlock;
96 if (ra->cra_end_idx != CL_PAGE_EOF)
97 ra->cra_contention = true;
105 * An implementation of cl_io_operations::cio_io_submit() method for osc
106 * layer. Iterates over pages in the in-queue, prepares each for io by calling
107 * cl_page_prep() and then either submits them through osc_io_submit_page()
108 * or, if page is already submitted, changes osc flags through
109 * osc_set_async_flags().
111 int osc_io_submit(const struct lu_env *env, const struct cl_io_slice *ios,
112 enum cl_req_type crt, struct cl_2queue *queue)
114 struct cl_page *page;
116 struct client_obd *cli = NULL;
117 struct osc_object *osc = NULL; /* to keep gcc happy */
118 struct osc_page *opg;
122 struct cl_page_list *qin = &queue->c2_qin;
123 struct cl_page_list *qout = &queue->c2_qout;
124 unsigned int queued = 0;
127 unsigned int max_pages;
128 unsigned int ppc_bits; /* pages per chunk bits */
130 bool sync_queue = false;
132 LASSERT(qin->pl_nr > 0);
134 CDEBUG(D_CACHE|D_READA, "%d %d\n", qin->pl_nr, crt);
136 osc = cl2osc(ios->cis_obj);
138 max_pages = cli->cl_max_pages_per_rpc;
139 ppc_bits = cli->cl_chunkbits - PAGE_SHIFT;
142 brw_flags = osc_io_srvlock(cl2osc_io(env, ios)) ? OBD_BRW_SRVLOCK : 0;
143 brw_flags |= crt == CRT_WRITE ? OBD_BRW_WRITE : OBD_BRW_READ;
144 if (crt == CRT_READ && ios->cis_io->ci_ndelay)
145 brw_flags |= OBD_BRW_NDELAY;
147 page = cl_page_list_first(qin);
148 if (page->cp_type == CPT_TRANSIENT)
149 brw_flags |= OBD_BRW_NOCACHE;
152 * NOTE: here @page is a top-level page. This is done to avoid
153 * creation of sub-page-list.
155 cl_page_list_for_each_safe(page, tmp, qin) {
156 struct osc_async_page *oap;
162 opg = osc_cl_page_osc(page, osc);
164 LASSERT(osc == oap->oap_obj);
166 if (!list_empty(&oap->oap_pending_item) ||
167 !list_empty(&oap->oap_rpc_item)) {
168 CDEBUG(D_CACHE, "Busy oap %p page %p for submit.\n",
174 result = cl_page_prep(env, io, page, crt);
177 if (result != -EALREADY)
180 * Handle -EALREADY error: for read case, the page is
181 * already in UPTODATE state; for write, the page
188 spin_lock(&oap->oap_lock);
189 oap->oap_async_flags = ASYNC_URGENT|ASYNC_READY;
190 oap->oap_async_flags |= ASYNC_COUNT_STABLE;
191 spin_unlock(&oap->oap_lock);
193 osc_page_submit(env, opg, crt, brw_flags);
194 list_add_tail(&oap->oap_pending_item, &list);
196 if (page->cp_sync_io != NULL)
197 cl_page_list_move(qout, qin, page);
199 cl_page_list_del(env, qin, page);
202 if (queued == max_pages) {
204 } else if (crt == CRT_WRITE) {
206 unsigned int next_chunks;
208 chunks = (queued + ppc - 1) >> ppc_bits;
209 /* chunk number if add another page */
210 next_chunks = (queued + ppc) >> ppc_bits;
212 /* next page will excceed write chunk limit */
213 if (chunks == osc_max_write_chunks(cli) &&
214 next_chunks > chunks)
219 result = osc_queue_sync_pages(env, io, osc, &list,
229 result = osc_queue_sync_pages(env, io, osc, &list, brw_flags);
231 /* Update c/mtime for sync write. LU-7310 */
232 if (crt == CRT_WRITE && qout->pl_nr > 0 && result == 0) {
233 struct cl_object *obj = ios->cis_obj;
234 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
236 cl_object_attr_lock(obj);
237 attr->cat_mtime = attr->cat_ctime = ktime_get_real_seconds();
238 cl_object_attr_update(env, obj, attr, CAT_MTIME | CAT_CTIME);
239 cl_object_attr_unlock(obj);
242 CDEBUG(D_INFO, "%d/%d %d\n", qin->pl_nr, qout->pl_nr, result);
243 return qout->pl_nr > 0 ? 0 : result;
245 EXPORT_SYMBOL(osc_io_submit);
248 * This is called to update the attributes when modifying a specific page,
249 * both when making new pages and when doing updates to existing cached pages.
251 * Expand stripe KMS if necessary.
253 void osc_page_touch_at(const struct lu_env *env, struct cl_object *obj,
254 pgoff_t idx, size_t to)
256 struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
257 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
263 /* offset within stripe */
264 kms = cl_offset(obj, idx) + to;
266 cl_object_attr_lock(obj);
267 CDEBUG(D_INODE, "stripe KMS %sincreasing %llu->%llu %llu\n",
268 kms > loi->loi_kms ? "" : "not ", loi->loi_kms, kms,
269 loi->loi_lvb.lvb_size);
271 attr->cat_mtime = attr->cat_ctime = ktime_get_real_seconds();
272 valid = CAT_MTIME | CAT_CTIME;
273 if (kms > loi->loi_kms) {
277 if (kms > loi->loi_lvb.lvb_size) {
278 attr->cat_size = kms;
281 cl_object_attr_update(env, obj, attr, valid);
282 cl_object_attr_unlock(obj);
287 int osc_io_commit_async(const struct lu_env *env,
288 const struct cl_io_slice *ios,
289 struct cl_page_list *qin, int from, int to,
292 struct cl_io *io = ios->cis_io;
293 struct osc_io *oio = cl2osc_io(env, ios);
294 struct osc_object *osc = cl2osc(ios->cis_obj);
295 struct cl_page *page;
296 struct cl_page *last_page;
297 struct osc_page *opg;
298 struct pagevec *pvec = &osc_env_info(env)->oti_pagevec;
302 LASSERT(qin->pl_nr > 0);
304 /* Handle partial page cases */
305 last_page = cl_page_list_last(qin);
306 if (oio->oi_lockless) {
307 page = cl_page_list_first(qin);
308 if (page == last_page) {
309 cl_page_clip(env, page, from, to);
312 cl_page_clip(env, page, from, PAGE_SIZE);
314 cl_page_clip(env, last_page, 0, to);
318 ll_pagevec_init(pvec, 0);
320 while (qin->pl_nr > 0) {
321 struct osc_async_page *oap;
323 page = cl_page_list_first(qin);
324 opg = osc_cl_page_osc(page, osc);
327 LASSERTF(osc == oap->oap_obj,
328 "obj mismatch: %p / %p\n", osc, oap->oap_obj);
330 if (!list_empty(&oap->oap_rpc_item)) {
331 CDEBUG(D_CACHE, "Busy oap %p page %p for submit.\n",
337 /* The page may be already in dirty cache. */
338 if (list_empty(&oap->oap_pending_item)) {
339 result = osc_page_cache_add(env, opg, io, cb);
344 osc_page_touch_at(env, osc2cl(osc), osc_index(opg),
345 page == last_page ? to : PAGE_SIZE);
347 cl_page_list_del(env, qin, page);
349 /* if there are no more slots, do the callback & reinit */
350 if (pagevec_add(pvec, page->cp_vmpage) == 0) {
351 (*cb)(env, io, pvec);
352 pagevec_reinit(pvec);
356 /* Clean up any partially full pagevecs */
357 if (pagevec_count(pvec) != 0)
358 (*cb)(env, io, pvec);
360 /* Can't access these pages any more. Page can be in transfer and
361 * complete at any time. */
363 /* for sync write, kernel will wait for this page to be flushed before
364 * osc_io_end() is called, so release it earlier.
365 * for mkwrite(), it's known there is no further pages. */
366 if (cl_io_is_sync_write(io) && oio->oi_active != NULL) {
367 osc_extent_release(env, oio->oi_active);
368 oio->oi_active = NULL;
371 CDEBUG(D_INFO, "%d %d\n", qin->pl_nr, result);
374 EXPORT_SYMBOL(osc_io_commit_async);
376 static bool osc_import_not_healthy(struct obd_import *imp)
378 return imp->imp_invalid || imp->imp_deactive ||
379 !(imp->imp_state == LUSTRE_IMP_FULL ||
380 imp->imp_state == LUSTRE_IMP_IDLE);
383 int osc_io_iter_init(const struct lu_env *env, const struct cl_io_slice *ios)
385 struct osc_object *osc = cl2osc(ios->cis_obj);
386 struct obd_import *imp = osc_cli(osc)->cl_import;
387 struct osc_io *oio = osc_env_io(env);
391 spin_lock(&imp->imp_lock);
393 * check whether this OSC device is available for non-delay read,
394 * fast switching mirror if we haven't tried all mirrors.
396 if (ios->cis_io->ci_type == CIT_READ && ios->cis_io->ci_ndelay &&
397 !ios->cis_io->ci_tried_all_mirrors && osc_import_not_healthy(imp)) {
399 } else if (likely(!imp->imp_invalid)) {
400 atomic_inc(&osc->oo_nr_ios);
401 oio->oi_is_active = 1;
404 spin_unlock(&imp->imp_lock);
406 if (cfs_capable(CFS_CAP_SYS_RESOURCE))
407 oio->oi_cap_sys_resource = 1;
411 EXPORT_SYMBOL(osc_io_iter_init);
413 int osc_io_rw_iter_init(const struct lu_env *env,
414 const struct cl_io_slice *ios)
416 struct cl_io *io = ios->cis_io;
417 struct osc_io *oio = osc_env_io(env);
418 struct osc_object *osc = cl2osc(ios->cis_obj);
419 unsigned long npages;
422 if (cl_io_is_append(io))
423 RETURN(osc_io_iter_init(env, ios));
425 npages = io->u.ci_rw.crw_count >> PAGE_SHIFT;
426 if (io->u.ci_rw.crw_pos & ~PAGE_MASK)
429 oio->oi_lru_reserved = osc_lru_reserve(osc_cli(osc), npages);
431 RETURN(osc_io_iter_init(env, ios));
433 EXPORT_SYMBOL(osc_io_rw_iter_init);
435 void osc_io_iter_fini(const struct lu_env *env,
436 const struct cl_io_slice *ios)
438 struct osc_io *oio = osc_env_io(env);
440 if (oio->oi_is_active) {
441 struct osc_object *osc = cl2osc(ios->cis_obj);
443 oio->oi_is_active = 0;
444 LASSERT(atomic_read(&osc->oo_nr_ios) > 0);
445 if (atomic_dec_and_test(&osc->oo_nr_ios))
446 wake_up_all(&osc->oo_io_waitq);
449 EXPORT_SYMBOL(osc_io_iter_fini);
451 void osc_io_rw_iter_fini(const struct lu_env *env,
452 const struct cl_io_slice *ios)
454 struct osc_io *oio = osc_env_io(env);
455 struct osc_object *osc = cl2osc(ios->cis_obj);
457 if (oio->oi_lru_reserved > 0) {
458 osc_lru_unreserve(osc_cli(osc), oio->oi_lru_reserved);
459 oio->oi_lru_reserved = 0;
461 oio->oi_write_osclock = NULL;
463 osc_io_iter_fini(env, ios);
465 EXPORT_SYMBOL(osc_io_rw_iter_fini);
467 int osc_io_fault_start(const struct lu_env *env, const struct cl_io_slice *ios)
470 struct cl_fault_io *fio;
474 fio = &io->u.ci_fault;
475 CDEBUG(D_INFO, "%lu %d %zu\n",
476 fio->ft_index, fio->ft_writable, fio->ft_nob);
478 * If mapping is writeable, adjust kms to cover this page,
479 * but do not extend kms beyond actual file size.
482 if (fio->ft_writable)
483 osc_page_touch_at(env, ios->cis_obj,
484 fio->ft_index, fio->ft_nob);
487 EXPORT_SYMBOL(osc_io_fault_start);
490 static int osc_async_upcall(void *a, int rc)
492 struct osc_async_cbargs *args = a;
495 complete(&args->opc_sync);
500 * Checks that there are no pages being written in the extent being truncated.
502 static bool trunc_check_cb(const struct lu_env *env, struct cl_io *io,
503 struct osc_page *ops , void *cbdata)
505 struct cl_page *page = ops->ops_cl.cpl_page;
506 struct osc_async_page *oap;
507 __u64 start = *(__u64 *)cbdata;
510 if (oap->oap_cmd & OBD_BRW_WRITE &&
511 !list_empty(&oap->oap_pending_item))
512 CL_PAGE_DEBUG(D_ERROR, env, page, "exists %llu/%s.\n",
513 start, current->comm);
515 if (PageLocked(page->cp_vmpage))
516 CDEBUG(D_CACHE, "page %p index %lu locked for %d.\n",
517 ops, osc_index(ops), oap->oap_cmd & OBD_BRW_RWMASK);
522 static void osc_trunc_check(const struct lu_env *env, struct cl_io *io,
523 struct osc_io *oio, __u64 size)
525 struct cl_object *clob;
529 clob = oio->oi_cl.cis_obj;
530 start = cl_index(clob, size);
531 partial = cl_offset(clob, start) < size;
534 * Complain if there are pages in the truncated region.
536 osc_page_gang_lookup(env, io, cl2osc(clob),
537 start + partial, CL_PAGE_EOF,
538 trunc_check_cb, (void *)&size);
541 static int osc_io_setattr_start(const struct lu_env *env,
542 const struct cl_io_slice *slice)
544 struct cl_io *io = slice->cis_io;
545 struct osc_io *oio = cl2osc_io(env, slice);
546 struct cl_object *obj = slice->cis_obj;
547 struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
548 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
549 struct obdo *oa = &oio->oi_oa;
550 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
551 unsigned int ia_avalid = io->u.ci_setattr.sa_avalid;
552 enum op_xvalid ia_xvalid = io->u.ci_setattr.sa_xvalid;
554 __u64 size = io->u.ci_setattr.sa_attr.lvb_size;
555 __u64 end = OBD_OBJECT_EOF;
556 bool io_is_falloc = false;
559 /* truncate cache dirty pages first */
560 if (cl_io_is_trunc(io)) {
561 result = osc_cache_truncate_start(env, cl2osc(obj), size,
563 } else if (cl_io_is_fallocate(io)) {
565 size = io->u.ci_setattr.sa_falloc_offset;
566 end = io->u.ci_setattr.sa_falloc_end;
569 if (result == 0 && oio->oi_lockless == 0) {
570 cl_object_attr_lock(obj);
571 result = cl_object_attr_get(env, obj, attr);
573 struct ost_lvb *lvb = &io->u.ci_setattr.sa_attr;
574 unsigned int cl_valid = 0;
576 if (ia_avalid & ATTR_SIZE) {
579 io->u.ci_setattr.sa_attr.lvb_size;
580 attr->cat_kms = attr->cat_size;
582 attr->cat_size = size;
583 attr->cat_kms = size;
585 cl_valid = (CAT_SIZE | CAT_KMS);
587 if (ia_avalid & ATTR_MTIME_SET) {
588 attr->cat_mtime = lvb->lvb_mtime;
589 cl_valid |= CAT_MTIME;
591 if (ia_avalid & ATTR_ATIME_SET) {
592 attr->cat_atime = lvb->lvb_atime;
593 cl_valid |= CAT_ATIME;
595 if (ia_xvalid & OP_XVALID_CTIME_SET) {
596 attr->cat_ctime = lvb->lvb_ctime;
597 cl_valid |= CAT_CTIME;
599 result = cl_object_attr_update(env, obj, attr,
602 cl_object_attr_unlock(obj);
604 memset(oa, 0, sizeof(*oa));
606 oa->o_oi = loi->loi_oi;
607 obdo_set_parent_fid(oa, io->u.ci_setattr.sa_parent_fid);
608 oa->o_stripe_idx = io->u.ci_setattr.sa_stripe_index;
609 oa->o_layout = io->u.ci_setattr.sa_layout;
610 oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP |
612 if (ia_avalid & ATTR_CTIME) {
613 oa->o_valid |= OBD_MD_FLCTIME;
614 oa->o_ctime = attr->cat_ctime;
616 if (ia_avalid & ATTR_ATIME) {
617 oa->o_valid |= OBD_MD_FLATIME;
618 oa->o_atime = attr->cat_atime;
620 if (ia_avalid & ATTR_MTIME) {
621 oa->o_valid |= OBD_MD_FLMTIME;
622 oa->o_mtime = attr->cat_mtime;
624 if (ia_avalid & ATTR_SIZE) {
628 oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
631 oa->o_blocks = OBD_OBJECT_EOF;
632 oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
635 if (oio->oi_lockless) {
636 oa->o_flags = OBD_FL_SRVLOCK;
637 oa->o_valid |= OBD_MD_FLFLAGS;
640 if (io->ci_layout_version > 0) {
641 /* verify layout version */
642 oa->o_valid |= OBD_MD_LAYOUT_VERSION;
643 oa->o_layout_version = io->ci_layout_version;
646 LASSERT(oio->oi_lockless == 0);
649 if (ia_xvalid & OP_XVALID_FLAGS) {
650 oa->o_flags = io->u.ci_setattr.sa_attr_flags;
651 oa->o_valid |= OBD_MD_FLFLAGS;
654 init_completion(&cbargs->opc_sync);
657 int falloc_mode = io->u.ci_setattr.sa_falloc_mode;
659 result = osc_fallocate_base(osc_export(cl2osc(obj)),
660 oa, osc_async_upcall,
661 cbargs, falloc_mode);
662 } else if (ia_avalid & ATTR_SIZE) {
663 result = osc_punch_send(osc_export(cl2osc(obj)),
664 oa, osc_async_upcall, cbargs);
666 result = osc_setattr_async(osc_export(cl2osc(obj)),
667 oa, osc_async_upcall,
668 cbargs, PTLRPCD_SET);
670 cbargs->opc_rpc_sent = result == 0;
676 void osc_io_setattr_end(const struct lu_env *env,
677 const struct cl_io_slice *slice)
679 struct cl_io *io = slice->cis_io;
680 struct osc_io *oio = cl2osc_io(env, slice);
681 struct cl_object *obj = slice->cis_obj;
682 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
683 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
684 struct obdo *oa = &oio->oi_oa;
685 unsigned int cl_valid = 0;
688 if (cbargs->opc_rpc_sent) {
689 wait_for_completion(&cbargs->opc_sync);
690 result = io->ci_result = cbargs->opc_rc;
694 if (oio->oi_lockless) {
695 /* lockless truncate */
696 struct osc_device *osd = lu2osc_dev(obj->co_lu.lo_dev);
698 LASSERT(cl_io_is_trunc(io));
699 LASSERT(cl_io_is_trunc(io) || cl_io_is_fallocate(io));
700 /* XXX: Need a lock. */
701 osd->od_stats.os_lockless_truncates++;
705 if (cl_io_is_trunc(io)) {
706 __u64 size = io->u.ci_setattr.sa_attr.lvb_size;
709 cl_object_attr_lock(obj);
710 if (oa->o_valid & OBD_MD_FLBLOCKS) {
711 attr->cat_blocks = oa->o_blocks;
712 cl_valid |= CAT_BLOCKS;
715 cl_object_attr_update(env, obj, attr, cl_valid);
716 cl_object_attr_unlock(obj);
718 osc_trunc_check(env, io, oio, size);
719 osc_cache_truncate_end(env, oio->oi_trunc);
720 oio->oi_trunc = NULL;
723 if (cl_io_is_fallocate(io)) {
725 cl_object_attr_lock(obj);
727 if (oa->o_valid & OBD_MD_FLBLOCKS) {
728 attr->cat_blocks = oa->o_blocks;
729 cl_valid |= CAT_BLOCKS;
732 cl_object_attr_update(env, obj, attr, cl_valid);
733 cl_object_attr_unlock(obj);
737 EXPORT_SYMBOL(osc_io_setattr_end);
739 struct osc_data_version_args {
740 struct osc_io *dva_oio;
744 osc_data_version_interpret(const struct lu_env *env, struct ptlrpc_request *req,
747 struct osc_data_version_args *dva = args;
748 struct osc_io *oio = dva->dva_oio;
749 const struct ost_body *body;
755 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
757 GOTO(out, rc = -EPROTO);
759 lustre_get_wire_obdo(&req->rq_import->imp_connect_data, &oio->oi_oa,
763 oio->oi_cbarg.opc_rc = rc;
764 complete(&oio->oi_cbarg.opc_sync);
769 static int osc_io_data_version_start(const struct lu_env *env,
770 const struct cl_io_slice *slice)
772 struct cl_data_version_io *dv = &slice->cis_io->u.ci_data_version;
773 struct osc_io *oio = cl2osc_io(env, slice);
774 struct obdo *oa = &oio->oi_oa;
775 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
776 struct osc_object *obj = cl2osc(slice->cis_obj);
777 struct lov_oinfo *loi = obj->oo_oinfo;
778 struct obd_export *exp = osc_export(obj);
779 struct ptlrpc_request *req;
780 struct ost_body *body;
781 struct osc_data_version_args *dva;
785 memset(oa, 0, sizeof(*oa));
786 oa->o_oi = loi->loi_oi;
787 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
789 if (dv->dv_flags & (LL_DV_RD_FLUSH | LL_DV_WR_FLUSH)) {
790 oa->o_valid |= OBD_MD_FLFLAGS;
791 oa->o_flags |= OBD_FL_SRVLOCK;
792 if (dv->dv_flags & LL_DV_WR_FLUSH)
793 oa->o_flags |= OBD_FL_FLUSH;
796 init_completion(&cbargs->opc_sync);
798 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
802 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
804 ptlrpc_request_free(req);
808 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
809 lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
811 ptlrpc_request_set_replen(req);
812 req->rq_interpret_reply = osc_data_version_interpret;
813 dva = ptlrpc_req_async_args(dva, req);
816 ptlrpcd_add_req(req);
821 static void osc_io_data_version_end(const struct lu_env *env,
822 const struct cl_io_slice *slice)
824 struct cl_data_version_io *dv = &slice->cis_io->u.ci_data_version;
825 struct osc_io *oio = cl2osc_io(env, slice);
826 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
829 wait_for_completion(&cbargs->opc_sync);
831 if (cbargs->opc_rc != 0) {
832 slice->cis_io->ci_result = cbargs->opc_rc;
834 slice->cis_io->ci_result = 0;
835 if (!(oio->oi_oa.o_valid &
836 (OBD_MD_LAYOUT_VERSION | OBD_MD_FLDATAVERSION)))
837 slice->cis_io->ci_result = -ENOTSUPP;
839 if (oio->oi_oa.o_valid & OBD_MD_LAYOUT_VERSION)
840 dv->dv_layout_version = oio->oi_oa.o_layout_version;
841 if (oio->oi_oa.o_valid & OBD_MD_FLDATAVERSION)
842 dv->dv_data_version = oio->oi_oa.o_data_version;
848 int osc_io_read_start(const struct lu_env *env,
849 const struct cl_io_slice *slice)
851 struct cl_object *obj = slice->cis_obj;
852 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
856 if (!slice->cis_io->ci_noatime) {
857 cl_object_attr_lock(obj);
858 attr->cat_atime = ktime_get_real_seconds();
859 rc = cl_object_attr_update(env, obj, attr, CAT_ATIME);
860 cl_object_attr_unlock(obj);
865 EXPORT_SYMBOL(osc_io_read_start);
867 int osc_io_write_start(const struct lu_env *env,
868 const struct cl_io_slice *slice)
870 struct cl_object *obj = slice->cis_obj;
871 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
875 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_DELAY_SETTIME, 1);
876 cl_object_attr_lock(obj);
877 attr->cat_mtime = attr->cat_ctime = ktime_get_real_seconds();
878 rc = cl_object_attr_update(env, obj, attr, CAT_MTIME | CAT_CTIME);
879 cl_object_attr_unlock(obj);
883 EXPORT_SYMBOL(osc_io_write_start);
885 int osc_fsync_ost(const struct lu_env *env, struct osc_object *obj,
886 struct cl_fsync_io *fio)
888 struct osc_io *oio = osc_env_io(env);
889 struct obdo *oa = &oio->oi_oa;
890 struct lov_oinfo *loi = obj->oo_oinfo;
891 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
895 memset(oa, 0, sizeof(*oa));
896 oa->o_oi = loi->loi_oi;
897 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
899 /* reload size abd blocks for start and end of sync range */
900 oa->o_size = fio->fi_start;
901 oa->o_blocks = fio->fi_end;
902 oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
904 obdo_set_parent_fid(oa, fio->fi_fid);
906 init_completion(&cbargs->opc_sync);
908 rc = osc_sync_base(obj, oa, osc_async_upcall, cbargs, PTLRPCD_SET);
911 EXPORT_SYMBOL(osc_fsync_ost);
913 int osc_io_fsync_start(const struct lu_env *env,
914 const struct cl_io_slice *slice)
916 struct cl_io *io = slice->cis_io;
917 struct cl_fsync_io *fio = &io->u.ci_fsync;
918 struct cl_object *obj = slice->cis_obj;
919 struct osc_object *osc = cl2osc(obj);
920 pgoff_t start = cl_index(obj, fio->fi_start);
921 pgoff_t end = cl_index(obj, fio->fi_end);
925 if (fio->fi_end == OBD_OBJECT_EOF)
928 result = osc_cache_writeback_range(env, osc, start, end, 0,
929 fio->fi_mode == CL_FSYNC_DISCARD);
931 fio->fi_nr_written += result;
934 if (fio->fi_mode == CL_FSYNC_ALL) {
937 /* we have to wait for writeback to finish before we can
938 * send OST_SYNC RPC. This is bad because it causes extents
939 * to be written osc by osc. However, we usually start
940 * writeback before CL_FSYNC_ALL so this won't have any real
942 rc = osc_cache_wait_range(env, osc, start, end);
945 rc = osc_fsync_ost(env, osc, fio);
953 void osc_io_fsync_end(const struct lu_env *env,
954 const struct cl_io_slice *slice)
956 struct cl_fsync_io *fio = &slice->cis_io->u.ci_fsync;
957 struct cl_object *obj = slice->cis_obj;
958 pgoff_t start = cl_index(obj, fio->fi_start);
959 pgoff_t end = cl_index(obj, fio->fi_end);
962 if (fio->fi_mode == CL_FSYNC_LOCAL) {
963 result = osc_cache_wait_range(env, cl2osc(obj), start, end);
964 } else if (fio->fi_mode == CL_FSYNC_ALL) {
965 struct osc_io *oio = cl2osc_io(env, slice);
966 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
968 wait_for_completion(&cbargs->opc_sync);
970 result = cbargs->opc_rc;
972 slice->cis_io->ci_result = result;
974 EXPORT_SYMBOL(osc_io_fsync_end);
976 static int osc_io_ladvise_start(const struct lu_env *env,
977 const struct cl_io_slice *slice)
980 struct cl_io *io = slice->cis_io;
981 struct osc_io *oio = cl2osc_io(env, slice);
982 struct cl_object *obj = slice->cis_obj;
983 struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
984 struct cl_ladvise_io *lio = &io->u.ci_ladvise;
985 struct obdo *oa = &oio->oi_oa;
986 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
987 struct lu_ladvise *ladvise;
988 struct ladvise_hdr *ladvise_hdr;
993 /* TODO: add multiple ladvise support in CLIO */
994 buf_size = offsetof(typeof(*ladvise_hdr), lah_advise[num_advise]);
995 if (osc_env_info(env)->oti_ladvise_buf.lb_len < buf_size)
996 lu_buf_realloc(&osc_env_info(env)->oti_ladvise_buf, buf_size);
998 ladvise_hdr = osc_env_info(env)->oti_ladvise_buf.lb_buf;
999 if (ladvise_hdr == NULL)
1002 memset(ladvise_hdr, 0, buf_size);
1003 ladvise_hdr->lah_magic = LADVISE_MAGIC;
1004 ladvise_hdr->lah_count = num_advise;
1005 ladvise_hdr->lah_flags = lio->li_flags;
1007 memset(oa, 0, sizeof(*oa));
1008 oa->o_oi = loi->loi_oi;
1009 oa->o_valid = OBD_MD_FLID;
1010 obdo_set_parent_fid(oa, lio->li_fid);
1012 ladvise = ladvise_hdr->lah_advise;
1013 ladvise->lla_start = lio->li_start;
1014 ladvise->lla_end = lio->li_end;
1015 ladvise->lla_advice = lio->li_advice;
1017 if (lio->li_flags & LF_ASYNC) {
1018 result = osc_ladvise_base(osc_export(cl2osc(obj)), oa,
1019 ladvise_hdr, NULL, NULL, NULL);
1021 init_completion(&cbargs->opc_sync);
1022 result = osc_ladvise_base(osc_export(cl2osc(obj)), oa,
1023 ladvise_hdr, osc_async_upcall,
1024 cbargs, PTLRPCD_SET);
1025 cbargs->opc_rpc_sent = result == 0;
1030 static void osc_io_ladvise_end(const struct lu_env *env,
1031 const struct cl_io_slice *slice)
1033 struct cl_io *io = slice->cis_io;
1034 struct osc_io *oio = cl2osc_io(env, slice);
1035 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
1037 struct cl_ladvise_io *lio = &io->u.ci_ladvise;
1039 if ((!(lio->li_flags & LF_ASYNC)) && cbargs->opc_rpc_sent) {
1040 wait_for_completion(&cbargs->opc_sync);
1041 result = cbargs->opc_rc;
1043 slice->cis_io->ci_result = result;
1046 void osc_io_end(const struct lu_env *env, const struct cl_io_slice *slice)
1048 struct osc_io *oio = cl2osc_io(env, slice);
1050 if (oio->oi_active) {
1051 osc_extent_release(env, oio->oi_active);
1052 oio->oi_active = NULL;
1055 EXPORT_SYMBOL(osc_io_end);
1057 struct osc_lseek_args {
1058 struct osc_io *lsa_oio;
1061 static int osc_lseek_interpret(const struct lu_env *env,
1062 struct ptlrpc_request *req,
1065 struct ost_body *reply;
1066 struct osc_lseek_args *lsa = arg;
1067 struct osc_io *oio = lsa->lsa_oio;
1068 struct cl_io *io = oio->oi_cl.cis_io;
1069 struct cl_lseek_io *lsio = &io->u.ci_lseek;
1076 reply = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
1078 GOTO(out, rc = -EPROTO);
1080 lsio->ls_result = reply->oa.o_size;
1082 osc_async_upcall(&oio->oi_cbarg, rc);
1086 int osc_io_lseek_start(const struct lu_env *env,
1087 const struct cl_io_slice *slice)
1089 struct cl_io *io = slice->cis_io;
1090 struct osc_io *oio = cl2osc_io(env, slice);
1091 struct cl_object *obj = slice->cis_obj;
1092 struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
1093 struct cl_lseek_io *lsio = &io->u.ci_lseek;
1094 struct obdo *oa = &oio->oi_oa;
1095 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
1096 struct obd_export *exp = osc_export(cl2osc(obj));
1097 struct ptlrpc_request *req;
1098 struct ost_body *body;
1099 struct osc_lseek_args *lsa;
1104 /* No negative values at this point */
1105 LASSERT(lsio->ls_start >= 0);
1106 LASSERT(lsio->ls_whence == SEEK_HOLE || lsio->ls_whence == SEEK_DATA);
1108 /* with IO lock taken we have object size in LVB and can check
1109 * boundaries prior sending LSEEK RPC
1111 if (lsio->ls_start >= loi->loi_lvb.lvb_size) {
1112 /* consider area beyond end of object as hole */
1113 if (lsio->ls_whence == SEEK_HOLE)
1114 lsio->ls_result = lsio->ls_start;
1116 lsio->ls_result = -ENXIO;
1120 /* if LSEEK RPC is not supported by server, consider whole stripe
1121 * object is data with hole after end of object
1123 if (!exp_connect_lseek(exp)) {
1124 if (lsio->ls_whence == SEEK_HOLE)
1125 lsio->ls_result = loi->loi_lvb.lvb_size;
1127 lsio->ls_result = lsio->ls_start;
1131 memset(oa, 0, sizeof(*oa));
1132 oa->o_oi = loi->loi_oi;
1133 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1134 oa->o_size = lsio->ls_start;
1135 oa->o_mode = lsio->ls_whence;
1136 if (oio->oi_lockless) {
1137 oa->o_flags = OBD_FL_SRVLOCK;
1138 oa->o_valid |= OBD_MD_FLFLAGS;
1141 init_completion(&cbargs->opc_sync);
1142 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SEEK);
1146 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SEEK);
1148 ptlrpc_request_free(req);
1152 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
1153 lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
1154 ptlrpc_request_set_replen(req);
1155 req->rq_interpret_reply = osc_lseek_interpret;
1156 lsa = ptlrpc_req_async_args(lsa, req);
1159 ptlrpcd_add_req(req);
1160 cbargs->opc_rpc_sent = 1;
1164 EXPORT_SYMBOL(osc_io_lseek_start);
1166 void osc_io_lseek_end(const struct lu_env *env,
1167 const struct cl_io_slice *slice)
1169 struct osc_io *oio = cl2osc_io(env, slice);
1170 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
1173 if (cbargs->opc_rpc_sent) {
1174 wait_for_completion(&cbargs->opc_sync);
1175 rc = cbargs->opc_rc;
1177 slice->cis_io->ci_result = rc;
1179 EXPORT_SYMBOL(osc_io_lseek_end);
1181 static const struct cl_io_operations osc_io_ops = {
1184 .cio_iter_init = osc_io_rw_iter_init,
1185 .cio_iter_fini = osc_io_rw_iter_fini,
1186 .cio_start = osc_io_read_start,
1187 .cio_fini = osc_io_fini
1190 .cio_iter_init = osc_io_rw_iter_init,
1191 .cio_iter_fini = osc_io_rw_iter_fini,
1192 .cio_start = osc_io_write_start,
1193 .cio_end = osc_io_end,
1194 .cio_fini = osc_io_fini
1197 .cio_iter_init = osc_io_iter_init,
1198 .cio_iter_fini = osc_io_iter_fini,
1199 .cio_start = osc_io_setattr_start,
1200 .cio_end = osc_io_setattr_end
1202 [CIT_DATA_VERSION] = {
1203 .cio_start = osc_io_data_version_start,
1204 .cio_end = osc_io_data_version_end,
1207 .cio_iter_init = osc_io_iter_init,
1208 .cio_iter_fini = osc_io_iter_fini,
1209 .cio_start = osc_io_fault_start,
1210 .cio_end = osc_io_end,
1211 .cio_fini = osc_io_fini
1214 .cio_start = osc_io_fsync_start,
1215 .cio_end = osc_io_fsync_end,
1216 .cio_fini = osc_io_fini
1219 .cio_start = osc_io_ladvise_start,
1220 .cio_end = osc_io_ladvise_end,
1221 .cio_fini = osc_io_fini
1224 .cio_start = osc_io_lseek_start,
1225 .cio_end = osc_io_lseek_end,
1226 .cio_fini = osc_io_fini
1229 .cio_fini = osc_io_fini
1232 .cio_read_ahead = osc_io_read_ahead,
1233 .cio_submit = osc_io_submit,
1234 .cio_commit_async = osc_io_commit_async
1237 /*****************************************************************************
1239 * Transfer operations.
1243 int osc_io_init(const struct lu_env *env,
1244 struct cl_object *obj, struct cl_io *io)
1246 struct osc_io *oio = osc_env_io(env);
1248 CL_IO_SLICE_CLEAN(oio, oi_cl);
1249 cl_io_slice_add(io, &oio->oi_cl, obj, &osc_io_ops);