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/
31 * Implementation of cl_io for OSC layer.
33 * Author: Nikita Danilov <nikita.danilov@sun.com>
34 * Author: Jinshan Xiong <jinshan.xiong@whamcloud.com>
37 #define DEBUG_SUBSYSTEM S_OSC
39 #include <lustre_obdo.h>
40 #include <lustre_osc.h>
41 #include <linux/pagevec.h>
42 #include <linux/falloc.h>
44 #include "osc_internal.h"
50 /*****************************************************************************
56 static void osc_io_fini(const struct lu_env *env, const struct cl_io_slice *io)
60 void osc_read_ahead_release(const struct lu_env *env, struct cl_read_ahead *ra)
62 struct ldlm_lock *dlmlock = ra->cra_dlmlock;
63 struct osc_io *oio = ra->cra_oio;
64 struct lustre_handle lockh;
66 oio->oi_is_readahead = 0;
67 ldlm_lock2handle(dlmlock, &lockh);
68 ldlm_lock_decref(&lockh, LCK_PR);
69 LDLM_LOCK_PUT(dlmlock);
71 EXPORT_SYMBOL(osc_read_ahead_release);
73 static int osc_io_read_ahead(const struct lu_env *env,
74 const struct cl_io_slice *ios,
75 pgoff_t start, struct cl_read_ahead *ra)
77 struct osc_object *osc = cl2osc(ios->cis_obj);
78 struct osc_io *oio = cl2osc_io(env, ios);
79 struct ldlm_lock *dlmlock;
80 int result = -ENODATA;
84 oio->oi_is_readahead = true;
85 dlmlock = osc_dlmlock_at_pgoff(env, osc, start, 0);
86 if (dlmlock != NULL) {
87 LASSERT(dlmlock->l_ast_data == osc);
88 if (dlmlock->l_req_mode != LCK_PR) {
89 struct lustre_handle lockh;
90 ldlm_lock2handle(dlmlock, &lockh);
91 ldlm_lock_addref(&lockh, LCK_PR);
92 ldlm_lock_decref(&lockh, dlmlock->l_req_mode);
95 ra->cra_rpc_pages = osc_cli(osc)->cl_max_pages_per_rpc;
96 ra->cra_end_idx = cl_index(osc2cl(osc),
97 dlmlock->l_policy_data.l_extent.end);
98 ra->cra_release = osc_read_ahead_release;
99 ra->cra_dlmlock = dlmlock;
101 if (ra->cra_end_idx != CL_PAGE_EOF)
102 ra->cra_contention = true;
110 * An implementation of cl_io_operations::cio_io_submit() method for osc
111 * layer. Iterates over pages in the in-queue, prepares each for io by calling
112 * cl_page_prep() and then either submits them through osc_io_submit_page()
113 * or, if page is already submitted, changes osc flags through
114 * osc_set_async_flags().
116 int osc_io_submit(const struct lu_env *env, const struct cl_io_slice *ios,
117 enum cl_req_type crt, struct cl_2queue *queue)
119 struct cl_page *page;
121 struct client_obd *cli = NULL;
122 struct osc_object *osc = NULL; /* to keep gcc happy */
123 struct osc_page *opg;
127 struct cl_page_list *qin = &queue->c2_qin;
128 struct cl_page_list *qout = &queue->c2_qout;
129 unsigned int queued = 0;
132 unsigned int max_pages;
133 unsigned int ppc_bits; /* pages per chunk bits */
135 bool sync_queue = false;
137 LASSERT(qin->pl_nr > 0);
139 CDEBUG(D_CACHE|D_READA, "%d %d\n", qin->pl_nr, crt);
141 osc = cl2osc(ios->cis_obj);
143 max_pages = cli->cl_max_pages_per_rpc;
144 ppc_bits = cli->cl_chunkbits - PAGE_SHIFT;
147 brw_flags = osc_io_srvlock(cl2osc_io(env, ios)) ? OBD_BRW_SRVLOCK : 0;
148 brw_flags |= crt == CRT_WRITE ? OBD_BRW_WRITE : OBD_BRW_READ;
149 if (crt == CRT_READ && ios->cis_io->ci_ndelay)
150 brw_flags |= OBD_BRW_NDELAY;
152 page = cl_page_list_first(qin);
153 if (page->cp_type == CPT_TRANSIENT)
154 brw_flags |= OBD_BRW_NOCACHE;
157 * NOTE: here @page is a top-level page. This is done to avoid
158 * creation of sub-page-list.
160 cl_page_list_for_each_safe(page, tmp, qin) {
161 struct osc_async_page *oap;
167 opg = osc_cl_page_osc(page, osc);
169 LASSERT(osc == oap->oap_obj);
171 if (!list_empty(&oap->oap_pending_item) ||
172 !list_empty(&oap->oap_rpc_item)) {
173 CDEBUG(D_CACHE, "Busy oap %p page %p for submit.\n",
179 result = cl_page_prep(env, io, page, crt);
182 if (result != -EALREADY)
185 * Handle -EALREADY error: for read case, the page is
186 * already in UPTODATE state; for write, the page
193 spin_lock(&oap->oap_lock);
194 oap->oap_async_flags = ASYNC_URGENT|ASYNC_READY;
195 oap->oap_async_flags |= ASYNC_COUNT_STABLE;
196 spin_unlock(&oap->oap_lock);
198 osc_page_submit(env, opg, crt, brw_flags);
199 list_add_tail(&oap->oap_pending_item, &list);
201 if (page->cp_sync_io != NULL)
202 cl_page_list_move(qout, qin, page);
204 cl_page_list_del(env, qin, page);
207 if (queued == max_pages) {
209 } else if (crt == CRT_WRITE) {
211 unsigned int next_chunks;
213 chunks = (queued + ppc - 1) >> ppc_bits;
214 /* chunk number if add another page */
215 next_chunks = (queued + ppc) >> ppc_bits;
217 /* next page will excceed write chunk limit */
218 if (chunks == osc_max_write_chunks(cli) &&
219 next_chunks > chunks)
224 result = osc_queue_sync_pages(env, io, osc, &list,
234 result = osc_queue_sync_pages(env, io, osc, &list, brw_flags);
236 /* Update c/mtime for sync write. LU-7310 */
237 if (crt == CRT_WRITE && qout->pl_nr > 0 && result == 0) {
238 struct cl_object *obj = ios->cis_obj;
239 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
241 cl_object_attr_lock(obj);
242 attr->cat_mtime = attr->cat_ctime = ktime_get_real_seconds();
243 cl_object_attr_update(env, obj, attr, CAT_MTIME | CAT_CTIME);
244 cl_object_attr_unlock(obj);
247 CDEBUG(D_INFO, "%d/%d %d\n", qin->pl_nr, qout->pl_nr, result);
248 return qout->pl_nr > 0 ? 0 : result;
250 EXPORT_SYMBOL(osc_io_submit);
253 * This is called to update the attributes when modifying a specific page,
254 * both when making new pages and when doing updates to existing cached pages.
256 * Expand stripe KMS if necessary.
258 void osc_page_touch_at(const struct lu_env *env, struct cl_object *obj,
259 pgoff_t idx, size_t to)
261 struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
262 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
268 /* offset within stripe */
269 kms = cl_offset(obj, idx) + to;
271 cl_object_attr_lock(obj);
272 CDEBUG(D_INODE, "stripe KMS %sincreasing %llu->%llu %llu\n",
273 kms > loi->loi_kms ? "" : "not ", loi->loi_kms, kms,
274 loi->loi_lvb.lvb_size);
276 attr->cat_mtime = attr->cat_ctime = ktime_get_real_seconds();
277 valid = CAT_MTIME | CAT_CTIME;
278 if (kms > loi->loi_kms) {
282 if (kms > loi->loi_lvb.lvb_size) {
283 attr->cat_size = kms;
286 cl_object_attr_update(env, obj, attr, valid);
287 cl_object_attr_unlock(obj);
292 int osc_io_commit_async(const struct lu_env *env,
293 const struct cl_io_slice *ios,
294 struct cl_page_list *qin, int from, int to,
297 struct cl_io *io = ios->cis_io;
298 struct osc_io *oio = cl2osc_io(env, ios);
299 struct osc_object *osc = cl2osc(ios->cis_obj);
300 struct cl_page *page;
301 struct cl_page *last_page;
302 struct osc_page *opg;
303 struct pagevec *pvec = &osc_env_info(env)->oti_pagevec;
307 LASSERT(qin->pl_nr > 0);
309 /* Handle partial page cases */
310 last_page = cl_page_list_last(qin);
311 if (oio->oi_lockless) {
312 page = cl_page_list_first(qin);
313 if (page == last_page) {
314 cl_page_clip(env, page, from, to);
317 cl_page_clip(env, page, from, PAGE_SIZE);
319 cl_page_clip(env, last_page, 0, to);
323 ll_pagevec_init(pvec, 0);
325 while (qin->pl_nr > 0) {
326 struct osc_async_page *oap;
328 page = cl_page_list_first(qin);
329 opg = osc_cl_page_osc(page, osc);
332 LASSERTF(osc == oap->oap_obj,
333 "obj mismatch: %p / %p\n", osc, oap->oap_obj);
335 if (!list_empty(&oap->oap_rpc_item)) {
336 CDEBUG(D_CACHE, "Busy oap %p page %p for submit.\n",
342 /* The page may be already in dirty cache. */
343 if (list_empty(&oap->oap_pending_item)) {
344 result = osc_page_cache_add(env, opg, io, cb);
349 osc_page_touch_at(env, osc2cl(osc), osc_index(opg),
350 page == last_page ? to : PAGE_SIZE);
352 cl_page_list_del(env, qin, page);
354 /* if there are no more slots, do the callback & reinit */
355 if (pagevec_add(pvec, page->cp_vmpage) == 0) {
356 (*cb)(env, io, pvec);
357 pagevec_reinit(pvec);
361 /* Clean up any partially full pagevecs */
362 if (pagevec_count(pvec) != 0)
363 (*cb)(env, io, pvec);
365 /* Can't access these pages any more. Page can be in transfer and
366 * complete at any time. */
368 /* for sync write, kernel will wait for this page to be flushed before
369 * osc_io_end() is called, so release it earlier.
370 * for mkwrite(), it's known there is no further pages. */
371 if (cl_io_is_sync_write(io) && oio->oi_active != NULL) {
372 osc_extent_release(env, oio->oi_active);
373 oio->oi_active = NULL;
376 CDEBUG(D_INFO, "%d %d\n", qin->pl_nr, result);
379 EXPORT_SYMBOL(osc_io_commit_async);
381 void osc_io_extent_release(const struct lu_env *env,
382 const struct cl_io_slice *ios)
384 struct osc_io *oio = cl2osc_io(env, ios);
386 if (oio->oi_active != NULL) {
387 osc_extent_release(env, oio->oi_active);
388 oio->oi_active = NULL;
391 EXPORT_SYMBOL(osc_io_extent_release);
393 static bool osc_import_not_healthy(struct obd_import *imp)
395 return imp->imp_invalid || imp->imp_deactive ||
396 !(imp->imp_state == LUSTRE_IMP_FULL ||
397 imp->imp_state == LUSTRE_IMP_IDLE);
400 int osc_io_iter_init(const struct lu_env *env, const struct cl_io_slice *ios)
402 struct osc_object *osc = cl2osc(ios->cis_obj);
403 struct obd_import *imp = osc_cli(osc)->cl_import;
404 struct osc_io *oio = osc_env_io(env);
409 spin_lock(&imp->imp_lock);
411 * check whether this OSC device is available for non-delay read,
412 * fast switching mirror if we haven't tried all mirrors.
414 if (ios->cis_io->ci_type == CIT_READ && ios->cis_io->ci_ndelay &&
415 !ios->cis_io->ci_tried_all_mirrors && osc_import_not_healthy(imp)) {
417 } else if (likely(!imp->imp_invalid)) {
418 atomic_inc(&osc->oo_nr_ios);
419 oio->oi_is_active = 1;
422 spin_unlock(&imp->imp_lock);
424 if (capable(CAP_SYS_RESOURCE))
425 oio->oi_cap_sys_resource = 1;
429 EXPORT_SYMBOL(osc_io_iter_init);
431 void osc_io_iter_fini(const struct lu_env *env,
432 const struct cl_io_slice *ios)
434 struct osc_io *oio = osc_env_io(env);
436 if (oio->oi_is_active) {
437 struct osc_object *osc = cl2osc(ios->cis_obj);
439 oio->oi_is_active = 0;
440 LASSERT(atomic_read(&osc->oo_nr_ios) > 0);
441 if (atomic_dec_and_test(&osc->oo_nr_ios))
442 wake_up(&osc->oo_io_waitq);
445 EXPORT_SYMBOL(osc_io_iter_fini);
447 void osc_io_rw_iter_fini(const struct lu_env *env,
448 const struct cl_io_slice *ios)
450 struct osc_io *oio = osc_env_io(env);
451 struct osc_object *osc = cl2osc(ios->cis_obj);
453 if (oio->oi_lru_reserved > 0) {
454 osc_lru_unreserve(osc_cli(osc), oio->oi_lru_reserved);
455 oio->oi_lru_reserved = 0;
457 oio->oi_write_osclock = NULL;
459 osc_io_iter_fini(env, ios);
461 EXPORT_SYMBOL(osc_io_rw_iter_fini);
463 int osc_io_fault_start(const struct lu_env *env, const struct cl_io_slice *ios)
466 struct cl_fault_io *fio;
470 fio = &io->u.ci_fault;
471 CDEBUG(D_INFO, "%lu %d %zu\n",
472 fio->ft_index, fio->ft_writable, fio->ft_nob);
474 * If mapping is writeable, adjust kms to cover this page,
475 * but do not extend kms beyond actual file size.
478 if (fio->ft_writable)
479 osc_page_touch_at(env, ios->cis_obj,
480 fio->ft_index, fio->ft_nob);
483 EXPORT_SYMBOL(osc_io_fault_start);
486 static int osc_async_upcall(void *a, int rc)
488 struct osc_async_cbargs *args = a;
491 complete(&args->opc_sync);
496 * Checks that there are no pages being written in the extent being truncated.
498 static bool trunc_check_cb(const struct lu_env *env, struct cl_io *io,
499 struct osc_page *ops , void *cbdata)
501 struct cl_page *page = ops->ops_cl.cpl_page;
502 struct osc_async_page *oap;
503 __u64 start = *(__u64 *)cbdata;
506 if (oap->oap_cmd & OBD_BRW_WRITE &&
507 !list_empty(&oap->oap_pending_item))
508 CL_PAGE_DEBUG(D_ERROR, env, page, "exists %llu/%s.\n",
509 start, current->comm);
511 if (PageLocked(page->cp_vmpage))
512 CDEBUG(D_CACHE, "page %p index %lu locked for %d.\n",
513 ops, osc_index(ops), oap->oap_cmd & OBD_BRW_RWMASK);
518 static void osc_trunc_check(const struct lu_env *env, struct cl_io *io,
519 struct osc_io *oio, __u64 size)
521 struct cl_object *clob;
525 clob = oio->oi_cl.cis_obj;
526 start = cl_index(clob, size);
527 partial = cl_offset(clob, start) < size;
530 * Complain if there are pages in the truncated region.
532 osc_page_gang_lookup(env, io, cl2osc(clob),
533 start + partial, CL_PAGE_EOF,
534 trunc_check_cb, (void *)&size);
538 * Flush affected pages prior punch.
539 * We shouldn't discard them locally first because that could be data loss
540 * if server doesn't support fallocate punch, we also need these data to be
541 * flushed first to prevent re-ordering with the punch
543 static int osc_punch_start(const struct lu_env *env, struct cl_io *io,
544 struct cl_object *obj)
546 struct osc_object *osc = cl2osc(obj);
547 pgoff_t pg_start = cl_index(obj, io->u.ci_setattr.sa_falloc_offset);
548 pgoff_t pg_end = cl_index(obj, io->u.ci_setattr.sa_falloc_end - 1);
552 rc = osc_cache_writeback_range(env, osc, pg_start, pg_end, 1, 0);
556 osc_page_gang_lookup(env, io, osc, pg_start, pg_end, osc_discard_cb,
561 static int osc_io_setattr_start(const struct lu_env *env,
562 const struct cl_io_slice *slice)
564 struct cl_io *io = slice->cis_io;
565 struct osc_io *oio = cl2osc_io(env, slice);
566 struct cl_object *obj = slice->cis_obj;
567 struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
568 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
569 struct obdo *oa = &oio->oi_oa;
570 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
571 unsigned int ia_avalid = io->u.ci_setattr.sa_avalid;
572 enum op_xvalid ia_xvalid = io->u.ci_setattr.sa_xvalid;
574 __u64 size = io->u.ci_setattr.sa_attr.lvb_size;
575 bool io_is_falloc = cl_io_is_fallocate(io);
578 /* truncate cache dirty pages first */
579 if (cl_io_is_trunc(io))
580 result = osc_cache_truncate_start(env, cl2osc(obj), size,
582 /* flush local pages prior punching them on server */
584 io->u.ci_setattr.sa_falloc_mode & FALLOC_FL_PUNCH_HOLE)
585 result = osc_punch_start(env, io, obj);
587 if (result == 0 && oio->oi_lockless == 0) {
588 cl_object_attr_lock(obj);
589 result = cl_object_attr_get(env, obj, attr);
591 struct ost_lvb *lvb = &io->u.ci_setattr.sa_attr;
592 unsigned int cl_valid = 0;
594 if (ia_avalid & ATTR_SIZE) {
595 attr->cat_size = size;
596 attr->cat_kms = size;
597 cl_valid = (CAT_SIZE | CAT_KMS);
599 if (ia_avalid & ATTR_MTIME_SET) {
600 attr->cat_mtime = lvb->lvb_mtime;
601 cl_valid |= CAT_MTIME;
603 if (ia_avalid & ATTR_ATIME_SET) {
604 attr->cat_atime = lvb->lvb_atime;
605 cl_valid |= CAT_ATIME;
607 if (ia_xvalid & OP_XVALID_CTIME_SET) {
608 attr->cat_ctime = lvb->lvb_ctime;
609 cl_valid |= CAT_CTIME;
611 result = cl_object_attr_update(env, obj, attr,
614 cl_object_attr_unlock(obj);
616 memset(oa, 0, sizeof(*oa));
618 oa->o_oi = loi->loi_oi;
619 obdo_set_parent_fid(oa, io->u.ci_setattr.sa_parent_fid);
620 oa->o_stripe_idx = io->u.ci_setattr.sa_stripe_index;
621 oa->o_layout = io->u.ci_setattr.sa_layout;
622 oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP |
624 if (ia_avalid & ATTR_CTIME) {
625 oa->o_valid |= OBD_MD_FLCTIME;
626 oa->o_ctime = attr->cat_ctime;
628 if (ia_avalid & ATTR_ATIME) {
629 oa->o_valid |= OBD_MD_FLATIME;
630 oa->o_atime = attr->cat_atime;
632 if (ia_avalid & ATTR_MTIME) {
633 oa->o_valid |= OBD_MD_FLMTIME;
634 oa->o_mtime = attr->cat_mtime;
637 if (ia_avalid & ATTR_SIZE || io_is_falloc) {
638 if (oio->oi_lockless) {
639 oa->o_flags = OBD_FL_SRVLOCK;
640 oa->o_valid |= OBD_MD_FLFLAGS;
643 if (io->ci_layout_version > 0) {
644 /* verify layout version */
645 oa->o_valid |= OBD_MD_LAYOUT_VERSION;
646 oa->o_layout_version = io->ci_layout_version;
649 LASSERT(oio->oi_lockless == 0);
652 if (ia_xvalid & OP_XVALID_FLAGS) {
653 oa->o_flags = io->u.ci_setattr.sa_attr_flags;
654 oa->o_valid |= OBD_MD_FLFLAGS;
657 init_completion(&cbargs->opc_sync);
660 int falloc_mode = io->u.ci_setattr.sa_falloc_mode;
662 oa->o_size = io->u.ci_setattr.sa_falloc_offset;
663 oa->o_blocks = io->u.ci_setattr.sa_falloc_end;
664 oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
665 result = osc_fallocate_base(osc_export(cl2osc(obj)),
666 oa, osc_async_upcall,
667 cbargs, falloc_mode);
668 } else if (ia_avalid & ATTR_SIZE) {
670 oa->o_blocks = OBD_OBJECT_EOF;
671 oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
672 result = osc_punch_send(osc_export(cl2osc(obj)),
673 oa, osc_async_upcall, cbargs);
675 result = osc_setattr_async(osc_export(cl2osc(obj)),
676 oa, osc_async_upcall,
677 cbargs, PTLRPCD_SET);
679 cbargs->opc_rpc_sent = result == 0;
685 void osc_io_setattr_end(const struct lu_env *env,
686 const struct cl_io_slice *slice)
688 struct cl_io *io = slice->cis_io;
689 struct osc_io *oio = cl2osc_io(env, slice);
690 struct cl_object *obj = slice->cis_obj;
691 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
692 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
693 struct obdo *oa = &oio->oi_oa;
694 unsigned int cl_valid = 0;
697 if (cbargs->opc_rpc_sent) {
698 wait_for_completion(&cbargs->opc_sync);
699 result = io->ci_result = cbargs->opc_rc;
703 if (oio->oi_lockless) {
704 /* lockless truncate */
705 struct osc_device *osc = lu2osc_dev(obj->co_lu.lo_dev);
707 LASSERT(cl_io_is_trunc(io) || cl_io_is_fallocate(io));
708 /* XXX: Need a lock. */
709 osc->od_stats.os_lockless_truncates++;
713 if (cl_io_is_trunc(io)) {
714 __u64 size = io->u.ci_setattr.sa_attr.lvb_size;
717 cl_object_attr_lock(obj);
718 if (oa->o_valid & OBD_MD_FLBLOCKS) {
719 attr->cat_blocks = oa->o_blocks;
720 cl_valid |= CAT_BLOCKS;
723 cl_object_attr_update(env, obj, attr, cl_valid);
724 cl_object_attr_unlock(obj);
726 osc_trunc_check(env, io, oio, size);
727 osc_cache_truncate_end(env, oio->oi_trunc);
728 oio->oi_trunc = NULL;
731 if (cl_io_is_fallocate(io)) {
733 cl_object_attr_lock(obj);
735 if (oa->o_valid & OBD_MD_FLBLOCKS) {
736 attr->cat_blocks = oa->o_blocks;
737 cl_valid |= CAT_BLOCKS;
740 cl_object_attr_update(env, obj, attr, cl_valid);
741 cl_object_attr_unlock(obj);
745 EXPORT_SYMBOL(osc_io_setattr_end);
747 struct osc_data_version_args {
748 struct osc_io *dva_oio;
752 osc_data_version_interpret(const struct lu_env *env, struct ptlrpc_request *req,
755 struct osc_data_version_args *dva = args;
756 struct osc_io *oio = dva->dva_oio;
757 const struct ost_body *body;
763 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
765 GOTO(out, rc = -EPROTO);
767 lustre_get_wire_obdo(&req->rq_import->imp_connect_data, &oio->oi_oa,
771 oio->oi_cbarg.opc_rc = rc;
772 complete(&oio->oi_cbarg.opc_sync);
777 static int osc_io_data_version_start(const struct lu_env *env,
778 const struct cl_io_slice *slice)
780 struct cl_data_version_io *dv = &slice->cis_io->u.ci_data_version;
781 struct osc_io *oio = cl2osc_io(env, slice);
782 struct obdo *oa = &oio->oi_oa;
783 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
784 struct osc_object *obj = cl2osc(slice->cis_obj);
785 struct lov_oinfo *loi = obj->oo_oinfo;
786 struct obd_export *exp = osc_export(obj);
787 struct ptlrpc_request *req;
788 struct ost_body *body;
789 struct osc_data_version_args *dva;
793 memset(oa, 0, sizeof(*oa));
794 oa->o_oi = loi->loi_oi;
795 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
797 if (dv->dv_flags & (LL_DV_RD_FLUSH | LL_DV_WR_FLUSH)) {
798 oa->o_valid |= OBD_MD_FLFLAGS;
799 oa->o_flags |= OBD_FL_SRVLOCK;
800 if (dv->dv_flags & LL_DV_WR_FLUSH)
801 oa->o_flags |= OBD_FL_FLUSH;
804 init_completion(&cbargs->opc_sync);
806 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
810 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
812 ptlrpc_request_free(req);
816 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
817 lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
819 ptlrpc_request_set_replen(req);
820 req->rq_interpret_reply = osc_data_version_interpret;
821 dva = ptlrpc_req_async_args(dva, req);
824 ptlrpcd_add_req(req);
829 static void osc_io_data_version_end(const struct lu_env *env,
830 const struct cl_io_slice *slice)
832 struct cl_data_version_io *dv = &slice->cis_io->u.ci_data_version;
833 struct osc_io *oio = cl2osc_io(env, slice);
834 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
837 wait_for_completion(&cbargs->opc_sync);
839 if (cbargs->opc_rc != 0) {
840 slice->cis_io->ci_result = cbargs->opc_rc;
842 slice->cis_io->ci_result = 0;
843 if (!(oio->oi_oa.o_valid &
844 (OBD_MD_LAYOUT_VERSION | OBD_MD_FLDATAVERSION)))
845 slice->cis_io->ci_result = -ENOTSUPP;
847 if (oio->oi_oa.o_valid & OBD_MD_LAYOUT_VERSION)
848 dv->dv_layout_version = oio->oi_oa.o_layout_version;
849 if (oio->oi_oa.o_valid & OBD_MD_FLDATAVERSION)
850 dv->dv_data_version = oio->oi_oa.o_data_version;
856 int osc_io_read_start(const struct lu_env *env,
857 const struct cl_io_slice *slice)
859 struct cl_object *obj = slice->cis_obj;
860 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
864 if (!slice->cis_io->ci_noatime) {
865 cl_object_attr_lock(obj);
866 attr->cat_atime = ktime_get_real_seconds();
867 rc = cl_object_attr_update(env, obj, attr, CAT_ATIME);
868 cl_object_attr_unlock(obj);
873 EXPORT_SYMBOL(osc_io_read_start);
875 int osc_io_write_start(const struct lu_env *env,
876 const struct cl_io_slice *slice)
878 struct cl_object *obj = slice->cis_obj;
879 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
883 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_DELAY_SETTIME, 1);
884 cl_object_attr_lock(obj);
885 attr->cat_mtime = attr->cat_ctime = ktime_get_real_seconds();
886 rc = cl_object_attr_update(env, obj, attr, CAT_MTIME | CAT_CTIME);
887 cl_object_attr_unlock(obj);
891 EXPORT_SYMBOL(osc_io_write_start);
893 int osc_fsync_ost(const struct lu_env *env, struct osc_object *obj,
894 struct cl_fsync_io *fio)
896 struct osc_io *oio = osc_env_io(env);
897 struct obdo *oa = &oio->oi_oa;
898 struct lov_oinfo *loi = obj->oo_oinfo;
899 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
903 memset(oa, 0, sizeof(*oa));
904 oa->o_oi = loi->loi_oi;
905 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
907 /* reload size abd blocks for start and end of sync range */
908 oa->o_size = fio->fi_start;
909 oa->o_blocks = fio->fi_end;
910 oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
912 obdo_set_parent_fid(oa, fio->fi_fid);
914 init_completion(&cbargs->opc_sync);
916 rc = osc_sync_base(obj, oa, osc_async_upcall, cbargs, PTLRPCD_SET);
919 EXPORT_SYMBOL(osc_fsync_ost);
921 int osc_io_fsync_start(const struct lu_env *env,
922 const struct cl_io_slice *slice)
924 struct cl_io *io = slice->cis_io;
925 struct cl_fsync_io *fio = &io->u.ci_fsync;
926 struct cl_object *obj = slice->cis_obj;
927 struct osc_object *osc = cl2osc(obj);
928 pgoff_t start = cl_index(obj, fio->fi_start);
929 pgoff_t end = cl_index(obj, fio->fi_end);
933 if (fio->fi_end == OBD_OBJECT_EOF)
936 result = osc_cache_writeback_range(env, osc, start, end, 0,
937 fio->fi_mode == CL_FSYNC_DISCARD);
939 fio->fi_nr_written += result;
942 if (fio->fi_mode == CL_FSYNC_ALL) {
945 /* we have to wait for writeback to finish before we can
946 * send OST_SYNC RPC. This is bad because it causes extents
947 * to be written osc by osc. However, we usually start
948 * writeback before CL_FSYNC_ALL so this won't have any real
950 rc = osc_cache_wait_range(env, osc, start, end);
953 rc = osc_fsync_ost(env, osc, fio);
961 void osc_io_fsync_end(const struct lu_env *env,
962 const struct cl_io_slice *slice)
964 struct cl_fsync_io *fio = &slice->cis_io->u.ci_fsync;
965 struct cl_object *obj = slice->cis_obj;
966 pgoff_t start = cl_index(obj, fio->fi_start);
967 pgoff_t end = cl_index(obj, fio->fi_end);
970 if (fio->fi_mode == CL_FSYNC_LOCAL) {
971 result = osc_cache_wait_range(env, cl2osc(obj), start, end);
972 } else if (fio->fi_mode == CL_FSYNC_ALL) {
973 struct osc_io *oio = cl2osc_io(env, slice);
974 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
976 wait_for_completion(&cbargs->opc_sync);
978 result = cbargs->opc_rc;
980 slice->cis_io->ci_result = result;
982 EXPORT_SYMBOL(osc_io_fsync_end);
984 static int osc_io_ladvise_start(const struct lu_env *env,
985 const struct cl_io_slice *slice)
988 struct cl_io *io = slice->cis_io;
989 struct osc_io *oio = cl2osc_io(env, slice);
990 struct cl_object *obj = slice->cis_obj;
991 struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
992 struct cl_ladvise_io *lio = &io->u.ci_ladvise;
993 struct obdo *oa = &oio->oi_oa;
994 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
995 struct lu_ladvise *ladvise;
996 struct ladvise_hdr *ladvise_hdr;
1001 /* TODO: add multiple ladvise support in CLIO */
1002 buf_size = offsetof(typeof(*ladvise_hdr), lah_advise[num_advise]);
1003 if (osc_env_info(env)->oti_ladvise_buf.lb_len < buf_size)
1004 lu_buf_realloc(&osc_env_info(env)->oti_ladvise_buf, buf_size);
1006 ladvise_hdr = osc_env_info(env)->oti_ladvise_buf.lb_buf;
1007 if (ladvise_hdr == NULL)
1010 memset(ladvise_hdr, 0, buf_size);
1011 ladvise_hdr->lah_magic = LADVISE_MAGIC;
1012 ladvise_hdr->lah_count = num_advise;
1013 ladvise_hdr->lah_flags = lio->li_flags;
1015 memset(oa, 0, sizeof(*oa));
1016 oa->o_oi = loi->loi_oi;
1017 oa->o_valid = OBD_MD_FLID;
1018 obdo_set_parent_fid(oa, lio->li_fid);
1020 ladvise = ladvise_hdr->lah_advise;
1021 ladvise->lla_start = lio->li_start;
1022 ladvise->lla_end = lio->li_end;
1023 ladvise->lla_advice = lio->li_advice;
1025 if (lio->li_flags & LF_ASYNC) {
1026 result = osc_ladvise_base(osc_export(cl2osc(obj)), oa,
1027 ladvise_hdr, NULL, NULL, NULL);
1029 init_completion(&cbargs->opc_sync);
1030 result = osc_ladvise_base(osc_export(cl2osc(obj)), oa,
1031 ladvise_hdr, osc_async_upcall,
1032 cbargs, PTLRPCD_SET);
1033 cbargs->opc_rpc_sent = result == 0;
1038 static void osc_io_ladvise_end(const struct lu_env *env,
1039 const struct cl_io_slice *slice)
1041 struct cl_io *io = slice->cis_io;
1042 struct osc_io *oio = cl2osc_io(env, slice);
1043 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
1045 struct cl_ladvise_io *lio = &io->u.ci_ladvise;
1047 if ((!(lio->li_flags & LF_ASYNC)) && cbargs->opc_rpc_sent) {
1048 wait_for_completion(&cbargs->opc_sync);
1049 result = cbargs->opc_rc;
1051 slice->cis_io->ci_result = result;
1054 void osc_io_end(const struct lu_env *env, const struct cl_io_slice *slice)
1056 struct osc_io *oio = cl2osc_io(env, slice);
1058 if (oio->oi_active) {
1059 osc_extent_release(env, oio->oi_active);
1060 oio->oi_active = NULL;
1063 EXPORT_SYMBOL(osc_io_end);
1065 struct osc_lseek_args {
1066 struct osc_io *lsa_oio;
1069 static int osc_lseek_interpret(const struct lu_env *env,
1070 struct ptlrpc_request *req,
1073 struct ost_body *reply;
1074 struct osc_lseek_args *lsa = arg;
1075 struct osc_io *oio = lsa->lsa_oio;
1076 struct cl_io *io = oio->oi_cl.cis_io;
1077 struct cl_lseek_io *lsio = &io->u.ci_lseek;
1084 reply = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
1086 GOTO(out, rc = -EPROTO);
1088 lsio->ls_result = reply->oa.o_size;
1090 osc_async_upcall(&oio->oi_cbarg, rc);
1094 int osc_io_lseek_start(const struct lu_env *env,
1095 const struct cl_io_slice *slice)
1097 struct cl_io *io = slice->cis_io;
1098 struct osc_io *oio = cl2osc_io(env, slice);
1099 struct cl_object *obj = slice->cis_obj;
1100 struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
1101 struct cl_lseek_io *lsio = &io->u.ci_lseek;
1102 struct obdo *oa = &oio->oi_oa;
1103 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
1104 struct obd_export *exp = osc_export(cl2osc(obj));
1105 struct ptlrpc_request *req;
1106 struct ost_body *body;
1107 struct osc_lseek_args *lsa;
1112 /* No negative values at this point */
1113 LASSERT(lsio->ls_start >= 0);
1114 LASSERT(lsio->ls_whence == SEEK_HOLE || lsio->ls_whence == SEEK_DATA);
1116 /* with IO lock taken we have object size in LVB and can check
1117 * boundaries prior sending LSEEK RPC
1119 if (lsio->ls_start >= loi->loi_lvb.lvb_size) {
1120 /* consider area beyond end of object as hole */
1121 if (lsio->ls_whence == SEEK_HOLE)
1122 lsio->ls_result = lsio->ls_start;
1124 lsio->ls_result = -ENXIO;
1128 /* if LSEEK RPC is not supported by server, consider whole stripe
1129 * object is data with hole after end of object
1131 if (!exp_connect_lseek(exp)) {
1132 if (lsio->ls_whence == SEEK_HOLE)
1133 lsio->ls_result = loi->loi_lvb.lvb_size;
1135 lsio->ls_result = lsio->ls_start;
1139 memset(oa, 0, sizeof(*oa));
1140 oa->o_oi = loi->loi_oi;
1141 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1142 oa->o_size = lsio->ls_start;
1143 oa->o_mode = lsio->ls_whence;
1144 if (oio->oi_lockless) {
1145 oa->o_flags = OBD_FL_SRVLOCK;
1146 oa->o_valid |= OBD_MD_FLFLAGS;
1149 init_completion(&cbargs->opc_sync);
1150 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SEEK);
1154 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SEEK);
1156 ptlrpc_request_free(req);
1160 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
1161 lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
1162 ptlrpc_request_set_replen(req);
1163 req->rq_interpret_reply = osc_lseek_interpret;
1164 lsa = ptlrpc_req_async_args(lsa, req);
1167 ptlrpcd_add_req(req);
1168 cbargs->opc_rpc_sent = 1;
1172 EXPORT_SYMBOL(osc_io_lseek_start);
1174 void osc_io_lseek_end(const struct lu_env *env,
1175 const struct cl_io_slice *slice)
1177 struct osc_io *oio = cl2osc_io(env, slice);
1178 struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
1181 if (cbargs->opc_rpc_sent) {
1182 wait_for_completion(&cbargs->opc_sync);
1183 rc = cbargs->opc_rc;
1185 slice->cis_io->ci_result = rc;
1187 EXPORT_SYMBOL(osc_io_lseek_end);
1189 int osc_io_lru_reserve(const struct lu_env *env,
1190 const struct cl_io_slice *ios,
1191 loff_t pos, size_t bytes)
1193 struct osc_object *osc = cl2osc(ios->cis_obj);
1194 struct osc_io *oio = osc_env_io(env);
1195 unsigned long npages = 0;
1200 page_offset = pos & ~PAGE_MASK;
1203 if (bytes > PAGE_SIZE - page_offset)
1204 bytes -= (PAGE_SIZE - page_offset);
1208 npages += (bytes + PAGE_SIZE - 1) >> PAGE_SHIFT;
1209 oio->oi_lru_reserved = osc_lru_reserve(osc_cli(osc), npages);
1213 EXPORT_SYMBOL(osc_io_lru_reserve);
1215 static const struct cl_io_operations osc_io_ops = {
1218 .cio_iter_init = osc_io_iter_init,
1219 .cio_iter_fini = osc_io_rw_iter_fini,
1220 .cio_start = osc_io_read_start,
1221 .cio_fini = osc_io_fini
1224 .cio_iter_init = osc_io_iter_init,
1225 .cio_iter_fini = osc_io_rw_iter_fini,
1226 .cio_start = osc_io_write_start,
1227 .cio_end = osc_io_end,
1228 .cio_fini = osc_io_fini
1231 .cio_iter_init = osc_io_iter_init,
1232 .cio_iter_fini = osc_io_iter_fini,
1233 .cio_start = osc_io_setattr_start,
1234 .cio_end = osc_io_setattr_end
1236 [CIT_DATA_VERSION] = {
1237 .cio_start = osc_io_data_version_start,
1238 .cio_end = osc_io_data_version_end,
1241 .cio_iter_init = osc_io_iter_init,
1242 .cio_iter_fini = osc_io_iter_fini,
1243 .cio_start = osc_io_fault_start,
1244 .cio_end = osc_io_end,
1245 .cio_fini = osc_io_fini
1248 .cio_start = osc_io_fsync_start,
1249 .cio_end = osc_io_fsync_end,
1250 .cio_fini = osc_io_fini
1253 .cio_start = osc_io_ladvise_start,
1254 .cio_end = osc_io_ladvise_end,
1255 .cio_fini = osc_io_fini
1258 .cio_start = osc_io_lseek_start,
1259 .cio_end = osc_io_lseek_end,
1260 .cio_fini = osc_io_fini
1263 .cio_fini = osc_io_fini
1266 .cio_read_ahead = osc_io_read_ahead,
1267 .cio_lru_reserve = osc_io_lru_reserve,
1268 .cio_submit = osc_io_submit,
1269 .cio_commit_async = osc_io_commit_async,
1270 .cio_extent_release = osc_io_extent_release
1273 /*****************************************************************************
1275 * Transfer operations.
1279 int osc_io_init(const struct lu_env *env,
1280 struct cl_object *obj, struct cl_io *io)
1282 struct osc_io *oio = osc_env_io(env);
1284 CL_IO_SLICE_CLEAN(oio, oi_cl);
1285 cl_io_slice_add(io, &oio->oi_cl, obj, &osc_io_ops);