diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/osc/osc_io.c')
| -rw-r--r-- | drivers/staging/lustre/lustre/osc/osc_io.c | 918 |
1 files changed, 0 insertions, 918 deletions
diff --git a/drivers/staging/lustre/lustre/osc/osc_io.c b/drivers/staging/lustre/lustre/osc/osc_io.c deleted file mode 100644 index 76743faf3e6d..000000000000 --- a/drivers/staging/lustre/lustre/osc/osc_io.c +++ /dev/null @@ -1,918 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * GPL HEADER START - * - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 only, - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License version 2 for more details (a copy is included - * in the LICENSE file that accompanied this code). - * - * You should have received a copy of the GNU General Public License - * version 2 along with this program; If not, see - * http://www.gnu.org/licenses/gpl-2.0.html - * - * GPL HEADER END - */ -/* - * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. - * Use is subject to license terms. - * - * Copyright (c) 2011, 2015, Intel Corporation. - */ -/* - * This file is part of Lustre, http://www.lustre.org/ - * Lustre is a trademark of Sun Microsystems, Inc. - * - * Implementation of cl_io for OSC layer. - * - * Author: Nikita Danilov <nikita.danilov@sun.com> - * Author: Jinshan Xiong <jinshan.xiong@whamcloud.com> - */ - -#define DEBUG_SUBSYSTEM S_OSC - -#include <lustre_obdo.h> - -#include "osc_cl_internal.h" - -/** \addtogroup osc - * @{ - */ - -/***************************************************************************** - * - * Type conversions. - * - */ - -static struct osc_io *cl2osc_io(const struct lu_env *env, - const struct cl_io_slice *slice) -{ - struct osc_io *oio = container_of0(slice, struct osc_io, oi_cl); - - LINVRNT(oio == osc_env_io(env)); - return oio; -} - -/***************************************************************************** - * - * io operations. - * - */ - -static void osc_io_fini(const struct lu_env *env, const struct cl_io_slice *io) -{ -} - -static void osc_read_ahead_release(const struct lu_env *env, void *cbdata) -{ - struct ldlm_lock *dlmlock = cbdata; - struct lustre_handle lockh; - - ldlm_lock2handle(dlmlock, &lockh); - ldlm_lock_decref(&lockh, LCK_PR); - LDLM_LOCK_PUT(dlmlock); -} - -static int osc_io_read_ahead(const struct lu_env *env, - const struct cl_io_slice *ios, - pgoff_t start, struct cl_read_ahead *ra) -{ - struct osc_object *osc = cl2osc(ios->cis_obj); - struct ldlm_lock *dlmlock; - int result = -ENODATA; - - dlmlock = osc_dlmlock_at_pgoff(env, osc, start, 0); - if (dlmlock) { - LASSERT(dlmlock->l_ast_data == osc); - if (dlmlock->l_req_mode != LCK_PR) { - struct lustre_handle lockh; - - ldlm_lock2handle(dlmlock, &lockh); - ldlm_lock_addref(&lockh, LCK_PR); - ldlm_lock_decref(&lockh, dlmlock->l_req_mode); - } - - ra->cra_rpc_size = osc_cli(osc)->cl_max_pages_per_rpc; - ra->cra_end = cl_index(osc2cl(osc), - dlmlock->l_policy_data.l_extent.end); - ra->cra_release = osc_read_ahead_release; - ra->cra_cbdata = dlmlock; - result = 0; - } - - return result; -} - -/** - * An implementation of cl_io_operations::cio_io_submit() method for osc - * layer. Iterates over pages in the in-queue, prepares each for io by calling - * cl_page_prep() and then either submits them through osc_io_submit_page() - * or, if page is already submitted, changes osc flags through - * osc_set_async_flags(). - */ -static int osc_io_submit(const struct lu_env *env, - const struct cl_io_slice *ios, - enum cl_req_type crt, struct cl_2queue *queue) -{ - struct cl_page *page; - struct cl_page *tmp; - struct client_obd *cli = NULL; - struct osc_object *osc = NULL; /* to keep gcc happy */ - struct osc_page *opg; - struct cl_io *io; - LIST_HEAD(list); - - struct cl_page_list *qin = &queue->c2_qin; - struct cl_page_list *qout = &queue->c2_qout; - unsigned int queued = 0; - int result = 0; - int cmd; - int brw_flags; - unsigned int max_pages; - - LASSERT(qin->pl_nr > 0); - - CDEBUG(D_CACHE | D_READA, "%d %d\n", qin->pl_nr, crt); - - osc = cl2osc(ios->cis_obj); - cli = osc_cli(osc); - max_pages = cli->cl_max_pages_per_rpc; - - cmd = crt == CRT_WRITE ? OBD_BRW_WRITE : OBD_BRW_READ; - brw_flags = osc_io_srvlock(cl2osc_io(env, ios)) ? OBD_BRW_SRVLOCK : 0; - - /* - * NOTE: here @page is a top-level page. This is done to avoid - * creation of sub-page-list. - */ - cl_page_list_for_each_safe(page, tmp, qin) { - struct osc_async_page *oap; - - /* Top level IO. */ - io = page->cp_owner; - LASSERT(io); - - opg = osc_cl_page_osc(page, osc); - oap = &opg->ops_oap; - LASSERT(osc == oap->oap_obj); - - if (!list_empty(&oap->oap_pending_item) || - !list_empty(&oap->oap_rpc_item)) { - CDEBUG(D_CACHE, "Busy oap %p page %p for submit.\n", - oap, opg); - result = -EBUSY; - break; - } - - result = cl_page_prep(env, io, page, crt); - if (result != 0) { - LASSERT(result < 0); - if (result != -EALREADY) - break; - /* - * Handle -EALREADY error: for read case, the page is - * already in UPTODATE state; for write, the page - * is not dirty. - */ - result = 0; - continue; - } - - spin_lock(&oap->oap_lock); - oap->oap_async_flags = ASYNC_URGENT | ASYNC_READY; - oap->oap_async_flags |= ASYNC_COUNT_STABLE; - spin_unlock(&oap->oap_lock); - - osc_page_submit(env, opg, crt, brw_flags); - list_add_tail(&oap->oap_pending_item, &list); - - if (page->cp_sync_io) - cl_page_list_move(qout, qin, page); - else /* async IO */ - cl_page_list_del(env, qin, page); - - if (++queued == max_pages) { - queued = 0; - result = osc_queue_sync_pages(env, osc, &list, cmd, - brw_flags); - if (result < 0) - break; - } - } - - if (queued > 0) - result = osc_queue_sync_pages(env, osc, &list, cmd, brw_flags); - - /* Update c/mtime for sync write. LU-7310 */ - if (qout->pl_nr > 0 && !result) { - struct cl_attr *attr = &osc_env_info(env)->oti_attr; - struct cl_object *obj = ios->cis_obj; - - cl_object_attr_lock(obj); - attr->cat_mtime = ktime_get_real_seconds(); - attr->cat_ctime = attr->cat_mtime; - cl_object_attr_update(env, obj, attr, CAT_MTIME | CAT_CTIME); - cl_object_attr_unlock(obj); - } - - CDEBUG(D_INFO, "%d/%d %d\n", qin->pl_nr, qout->pl_nr, result); - return qout->pl_nr > 0 ? 0 : result; -} - -/** - * This is called when a page is accessed within file in a way that creates - * new page, if one were missing (i.e., if there were a hole at that place in - * the file, or accessed page is beyond the current file size). - * - * Expand stripe KMS if necessary. - */ -static void osc_page_touch_at(const struct lu_env *env, - struct cl_object *obj, pgoff_t idx, size_t to) -{ - struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo; - struct cl_attr *attr = &osc_env_info(env)->oti_attr; - int valid; - __u64 kms; - - /* offset within stripe */ - kms = cl_offset(obj, idx) + to; - - cl_object_attr_lock(obj); - /* - * XXX old code used - * - * ll_inode_size_lock(inode, 0); lov_stripe_lock(lsm); - * - * here - */ - CDEBUG(D_INODE, "stripe KMS %sincreasing %llu->%llu %llu\n", - kms > loi->loi_kms ? "" : "not ", loi->loi_kms, kms, - loi->loi_lvb.lvb_size); - - attr->cat_ctime = ktime_get_real_seconds(); - attr->cat_mtime = attr->cat_ctime; - valid = CAT_MTIME | CAT_CTIME; - if (kms > loi->loi_kms) { - attr->cat_kms = kms; - valid |= CAT_KMS; - } - if (kms > loi->loi_lvb.lvb_size) { - attr->cat_size = kms; - valid |= CAT_SIZE; - } - cl_object_attr_update(env, obj, attr, valid); - cl_object_attr_unlock(obj); -} - -static int osc_io_commit_async(const struct lu_env *env, - const struct cl_io_slice *ios, - struct cl_page_list *qin, int from, int to, - cl_commit_cbt cb) -{ - struct cl_io *io = ios->cis_io; - struct osc_io *oio = cl2osc_io(env, ios); - struct osc_object *osc = cl2osc(ios->cis_obj); - struct cl_page *page; - struct cl_page *last_page; - struct osc_page *opg; - int result = 0; - - LASSERT(qin->pl_nr > 0); - - /* Handle partial page cases */ - last_page = cl_page_list_last(qin); - if (oio->oi_lockless) { - page = cl_page_list_first(qin); - if (page == last_page) { - cl_page_clip(env, page, from, to); - } else { - if (from != 0) - cl_page_clip(env, page, from, PAGE_SIZE); - if (to != PAGE_SIZE) - cl_page_clip(env, last_page, 0, to); - } - } - - while (qin->pl_nr > 0) { - struct osc_async_page *oap; - - page = cl_page_list_first(qin); - opg = osc_cl_page_osc(page, osc); - oap = &opg->ops_oap; - - if (!list_empty(&oap->oap_rpc_item)) { - CDEBUG(D_CACHE, "Busy oap %p page %p for submit.\n", - oap, opg); - result = -EBUSY; - break; - } - - /* The page may be already in dirty cache. */ - if (list_empty(&oap->oap_pending_item)) { - result = osc_page_cache_add(env, &opg->ops_cl, io); - if (result != 0) - break; - } - - osc_page_touch_at(env, osc2cl(osc), osc_index(opg), - page == last_page ? to : PAGE_SIZE); - - cl_page_list_del(env, qin, page); - - (*cb)(env, io, page); - /* Can't access page any more. Page can be in transfer and - * complete at any time. - */ - } - - /* for sync write, kernel will wait for this page to be flushed before - * osc_io_end() is called, so release it earlier. - * for mkwrite(), it's known there is no further pages. - */ - if (cl_io_is_sync_write(io) && oio->oi_active) { - osc_extent_release(env, oio->oi_active); - oio->oi_active = NULL; - } - - CDEBUG(D_INFO, "%d %d\n", qin->pl_nr, result); - return result; -} - -static int osc_io_iter_init(const struct lu_env *env, - const struct cl_io_slice *ios) -{ - struct osc_object *osc = cl2osc(ios->cis_obj); - struct obd_import *imp = osc_cli(osc)->cl_import; - int rc = -EIO; - - spin_lock(&imp->imp_lock); - if (likely(!imp->imp_invalid)) { - struct osc_io *oio = osc_env_io(env); - - atomic_inc(&osc->oo_nr_ios); - oio->oi_is_active = 1; - rc = 0; - } - spin_unlock(&imp->imp_lock); - - return rc; -} - -static int osc_io_write_iter_init(const struct lu_env *env, - const struct cl_io_slice *ios) -{ - struct cl_io *io = ios->cis_io; - struct osc_io *oio = osc_env_io(env); - struct osc_object *osc = cl2osc(ios->cis_obj); - unsigned long npages; - - if (cl_io_is_append(io)) - return osc_io_iter_init(env, ios); - - npages = io->u.ci_rw.crw_count >> PAGE_SHIFT; - if (io->u.ci_rw.crw_pos & ~PAGE_MASK) - ++npages; - - oio->oi_lru_reserved = osc_lru_reserve(osc_cli(osc), npages); - - return osc_io_iter_init(env, ios); -} - -static void osc_io_iter_fini(const struct lu_env *env, - const struct cl_io_slice *ios) -{ - struct osc_io *oio = osc_env_io(env); - - if (oio->oi_is_active) { - struct osc_object *osc = cl2osc(ios->cis_obj); - - oio->oi_is_active = 0; - LASSERT(atomic_read(&osc->oo_nr_ios) > 0); - if (atomic_dec_and_test(&osc->oo_nr_ios)) - wake_up_all(&osc->oo_io_waitq); - } -} - -static void osc_io_write_iter_fini(const struct lu_env *env, - const struct cl_io_slice *ios) -{ - struct osc_io *oio = osc_env_io(env); - struct osc_object *osc = cl2osc(ios->cis_obj); - - if (oio->oi_lru_reserved > 0) { - osc_lru_unreserve(osc_cli(osc), oio->oi_lru_reserved); - oio->oi_lru_reserved = 0; - } - oio->oi_write_osclock = NULL; - - osc_io_iter_fini(env, ios); -} - -static int osc_io_fault_start(const struct lu_env *env, - const struct cl_io_slice *ios) -{ - struct cl_io *io; - struct cl_fault_io *fio; - - io = ios->cis_io; - fio = &io->u.ci_fault; - CDEBUG(D_INFO, "%lu %d %zu\n", - fio->ft_index, fio->ft_writable, fio->ft_nob); - /* - * If mapping is writeable, adjust kms to cover this page, - * but do not extend kms beyond actual file size. - * See bug 10919. - */ - if (fio->ft_writable) - osc_page_touch_at(env, ios->cis_obj, - fio->ft_index, fio->ft_nob); - return 0; -} - -static int osc_async_upcall(void *a, int rc) -{ - struct osc_async_cbargs *args = a; - - args->opc_rc = rc; - complete(&args->opc_sync); - return 0; -} - -/** - * Checks that there are no pages being written in the extent being truncated. - */ -static int trunc_check_cb(const struct lu_env *env, struct cl_io *io, - struct osc_page *ops, void *cbdata) -{ - struct cl_page *page = ops->ops_cl.cpl_page; - struct osc_async_page *oap; - __u64 start = *(__u64 *)cbdata; - - oap = &ops->ops_oap; - if (oap->oap_cmd & OBD_BRW_WRITE && - !list_empty(&oap->oap_pending_item)) - CL_PAGE_DEBUG(D_ERROR, env, page, "exists %llu/%s.\n", - start, current->comm); - - if (PageLocked(page->cp_vmpage)) - CDEBUG(D_CACHE, "page %p index %lu locked for %d.\n", - ops, osc_index(ops), oap->oap_cmd & OBD_BRW_RWMASK); - - return CLP_GANG_OKAY; -} - -static void osc_trunc_check(const struct lu_env *env, struct cl_io *io, - struct osc_io *oio, __u64 size) -{ - struct cl_object *clob; - int partial; - pgoff_t start; - - clob = oio->oi_cl.cis_obj; - start = cl_index(clob, size); - partial = cl_offset(clob, start) < size; - - /* - * Complain if there are pages in the truncated region. - */ - osc_page_gang_lookup(env, io, cl2osc(clob), - start + partial, CL_PAGE_EOF, - trunc_check_cb, (void *)&size); -} - -static int osc_io_setattr_start(const struct lu_env *env, - const struct cl_io_slice *slice) -{ - struct cl_io *io = slice->cis_io; - struct osc_io *oio = cl2osc_io(env, slice); - struct cl_object *obj = slice->cis_obj; - struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo; - struct cl_attr *attr = &osc_env_info(env)->oti_attr; - struct obdo *oa = &oio->oi_oa; - struct osc_async_cbargs *cbargs = &oio->oi_cbarg; - __u64 size = io->u.ci_setattr.sa_attr.lvb_size; - unsigned int ia_valid = io->u.ci_setattr.sa_valid; - int result = 0; - - /* truncate cache dirty pages first */ - if (cl_io_is_trunc(io)) - result = osc_cache_truncate_start(env, cl2osc(obj), size, - &oio->oi_trunc); - - if (result == 0 && oio->oi_lockless == 0) { - cl_object_attr_lock(obj); - result = cl_object_attr_get(env, obj, attr); - if (result == 0) { - struct ost_lvb *lvb = &io->u.ci_setattr.sa_attr; - unsigned int cl_valid = 0; - - if (ia_valid & ATTR_SIZE) { - attr->cat_size = size; - attr->cat_kms = size; - cl_valid = CAT_SIZE | CAT_KMS; - } - if (ia_valid & ATTR_MTIME_SET) { - attr->cat_mtime = lvb->lvb_mtime; - cl_valid |= CAT_MTIME; - } - if (ia_valid & ATTR_ATIME_SET) { - attr->cat_atime = lvb->lvb_atime; - cl_valid |= CAT_ATIME; - } - if (ia_valid & ATTR_CTIME_SET) { - attr->cat_ctime = lvb->lvb_ctime; - cl_valid |= CAT_CTIME; - } - result = cl_object_attr_update(env, obj, attr, - cl_valid); - } - cl_object_attr_unlock(obj); - } - memset(oa, 0, sizeof(*oa)); - if (result == 0) { - oa->o_oi = loi->loi_oi; - obdo_set_parent_fid(oa, io->u.ci_setattr.sa_parent_fid); - oa->o_stripe_idx = io->u.ci_setattr.sa_stripe_index; - oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP; - if (ia_valid & ATTR_CTIME) { - oa->o_valid |= OBD_MD_FLCTIME; - oa->o_ctime = attr->cat_ctime; - } - if (ia_valid & ATTR_ATIME) { - oa->o_valid |= OBD_MD_FLATIME; - oa->o_atime = attr->cat_atime; - } - if (ia_valid & ATTR_MTIME) { - oa->o_valid |= OBD_MD_FLMTIME; - oa->o_mtime = attr->cat_mtime; - } - if (ia_valid & ATTR_SIZE) { - oa->o_size = size; - oa->o_blocks = OBD_OBJECT_EOF; - oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS; - - if (oio->oi_lockless) { - oa->o_flags = OBD_FL_SRVLOCK; - oa->o_valid |= OBD_MD_FLFLAGS; - } - } else { - LASSERT(oio->oi_lockless == 0); - } - if (ia_valid & ATTR_ATTR_FLAG) { - oa->o_flags = io->u.ci_setattr.sa_attr_flags; - oa->o_valid |= OBD_MD_FLFLAGS; - } - - init_completion(&cbargs->opc_sync); - - if (ia_valid & ATTR_SIZE) - result = osc_punch_base(osc_export(cl2osc(obj)), - oa, osc_async_upcall, - cbargs, PTLRPCD_SET); - else - result = osc_setattr_async(osc_export(cl2osc(obj)), - oa, osc_async_upcall, - cbargs, PTLRPCD_SET); - cbargs->opc_rpc_sent = result == 0; - } - return result; -} - -static void osc_io_setattr_end(const struct lu_env *env, - const struct cl_io_slice *slice) -{ - struct cl_io *io = slice->cis_io; - struct osc_io *oio = cl2osc_io(env, slice); - struct cl_object *obj = slice->cis_obj; - struct osc_async_cbargs *cbargs = &oio->oi_cbarg; - int result = 0; - - if (cbargs->opc_rpc_sent) { - wait_for_completion(&cbargs->opc_sync); - result = cbargs->opc_rc; - io->ci_result = cbargs->opc_rc; - } - if (result == 0) { - if (oio->oi_lockless) { - /* lockless truncate */ - struct osc_device *osd = lu2osc_dev(obj->co_lu.lo_dev); - - LASSERT(cl_io_is_trunc(io)); - /* XXX: Need a lock. */ - osd->od_stats.os_lockless_truncates++; - } - } - - if (cl_io_is_trunc(io)) { - __u64 size = io->u.ci_setattr.sa_attr.lvb_size; - - osc_trunc_check(env, io, oio, size); - osc_cache_truncate_end(env, oio->oi_trunc); - oio->oi_trunc = NULL; - } -} - -struct osc_data_version_args { - struct osc_io *dva_oio; -}; - -static int -osc_data_version_interpret(const struct lu_env *env, struct ptlrpc_request *req, - void *arg, int rc) -{ - struct osc_data_version_args *dva = arg; - struct osc_io *oio = dva->dva_oio; - const struct ost_body *body; - - if (rc < 0) - goto out; - - body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); - if (!body) { - rc = -EPROTO; - goto out; - } - - lustre_get_wire_obdo(&req->rq_import->imp_connect_data, &oio->oi_oa, - &body->oa); -out: - oio->oi_cbarg.opc_rc = rc; - complete(&oio->oi_cbarg.opc_sync); - - return 0; -} - -static int osc_io_data_version_start(const struct lu_env *env, - const struct cl_io_slice *slice) -{ - struct cl_data_version_io *dv = &slice->cis_io->u.ci_data_version; - struct osc_io *oio = cl2osc_io(env, slice); - struct osc_async_cbargs *cbargs = &oio->oi_cbarg; - struct osc_object *obj = cl2osc(slice->cis_obj); - struct obd_export *exp = osc_export(obj); - struct lov_oinfo *loi = obj->oo_oinfo; - struct osc_data_version_args *dva; - struct obdo *oa = &oio->oi_oa; - struct ptlrpc_request *req; - struct ost_body *body; - int rc; - - memset(oa, 0, sizeof(*oa)); - oa->o_oi = loi->loi_oi; - oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP; - - if (dv->dv_flags & (LL_DV_RD_FLUSH | LL_DV_WR_FLUSH)) { - oa->o_valid |= OBD_MD_FLFLAGS; - oa->o_flags |= OBD_FL_SRVLOCK; - if (dv->dv_flags & LL_DV_WR_FLUSH) - oa->o_flags |= OBD_FL_FLUSH; - } - - init_completion(&cbargs->opc_sync); - - req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR); - if (!req) - return -ENOMEM; - - rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR); - if (rc < 0) { - ptlrpc_request_free(req); - return rc; - } - - body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); - lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa); - - ptlrpc_request_set_replen(req); - req->rq_interpret_reply = osc_data_version_interpret; - BUILD_BUG_ON(sizeof(*dva) > sizeof(req->rq_async_args)); - dva = ptlrpc_req_async_args(req); - dva->dva_oio = oio; - - ptlrpcd_add_req(req); - - return 0; -} - -static void osc_io_data_version_end(const struct lu_env *env, - const struct cl_io_slice *slice) -{ - struct cl_data_version_io *dv = &slice->cis_io->u.ci_data_version; - struct osc_io *oio = cl2osc_io(env, slice); - struct osc_async_cbargs *cbargs = &oio->oi_cbarg; - - wait_for_completion(&cbargs->opc_sync); - - if (cbargs->opc_rc) { - slice->cis_io->ci_result = cbargs->opc_rc; - } else if (!(oio->oi_oa.o_valid & OBD_MD_FLDATAVERSION)) { - slice->cis_io->ci_result = -EOPNOTSUPP; - } else { - dv->dv_data_version = oio->oi_oa.o_data_version; - slice->cis_io->ci_result = 0; - } -} - -static int osc_io_read_start(const struct lu_env *env, - const struct cl_io_slice *slice) -{ - struct cl_object *obj = slice->cis_obj; - struct cl_attr *attr = &osc_env_info(env)->oti_attr; - int rc = 0; - - if (!slice->cis_io->ci_noatime) { - cl_object_attr_lock(obj); - attr->cat_atime = ktime_get_real_seconds(); - rc = cl_object_attr_update(env, obj, attr, CAT_ATIME); - cl_object_attr_unlock(obj); - } - return rc; -} - -static int osc_io_write_start(const struct lu_env *env, - const struct cl_io_slice *slice) -{ - struct cl_object *obj = slice->cis_obj; - struct cl_attr *attr = &osc_env_info(env)->oti_attr; - int rc = 0; - - OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_DELAY_SETTIME, 1); - cl_object_attr_lock(obj); - attr->cat_ctime = ktime_get_real_seconds(); - attr->cat_mtime = attr->cat_ctime; - rc = cl_object_attr_update(env, obj, attr, CAT_MTIME | CAT_CTIME); - cl_object_attr_unlock(obj); - - return rc; -} - -static int osc_fsync_ost(const struct lu_env *env, struct osc_object *obj, - struct cl_fsync_io *fio) -{ - struct osc_io *oio = osc_env_io(env); - struct obdo *oa = &oio->oi_oa; - struct lov_oinfo *loi = obj->oo_oinfo; - struct osc_async_cbargs *cbargs = &oio->oi_cbarg; - int rc = 0; - - memset(oa, 0, sizeof(*oa)); - oa->o_oi = loi->loi_oi; - oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP; - - /* reload size abd blocks for start and end of sync range */ - oa->o_size = fio->fi_start; - oa->o_blocks = fio->fi_end; - oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS; - - obdo_set_parent_fid(oa, fio->fi_fid); - - init_completion(&cbargs->opc_sync); - - rc = osc_sync_base(obj, oa, osc_async_upcall, cbargs, PTLRPCD_SET); - return rc; -} - -static int osc_io_fsync_start(const struct lu_env *env, - const struct cl_io_slice *slice) -{ - struct cl_io *io = slice->cis_io; - struct cl_fsync_io *fio = &io->u.ci_fsync; - struct cl_object *obj = slice->cis_obj; - struct osc_object *osc = cl2osc(obj); - pgoff_t start = cl_index(obj, fio->fi_start); - pgoff_t end = cl_index(obj, fio->fi_end); - int result = 0; - - if (fio->fi_end == OBD_OBJECT_EOF) - end = CL_PAGE_EOF; - - result = osc_cache_writeback_range(env, osc, start, end, 0, - fio->fi_mode == CL_FSYNC_DISCARD); - if (result > 0) { - fio->fi_nr_written += result; - result = 0; - } - if (fio->fi_mode == CL_FSYNC_ALL) { - int rc; - - /* we have to wait for writeback to finish before we can - * send OST_SYNC RPC. This is bad because it causes extents - * to be written osc by osc. However, we usually start - * writeback before CL_FSYNC_ALL so this won't have any real - * problem. - */ - rc = osc_cache_wait_range(env, osc, start, end); - if (result == 0) - result = rc; - rc = osc_fsync_ost(env, osc, fio); - if (result == 0) - result = rc; - } - - return result; -} - -static void osc_io_fsync_end(const struct lu_env *env, - const struct cl_io_slice *slice) -{ - struct cl_fsync_io *fio = &slice->cis_io->u.ci_fsync; - struct cl_object *obj = slice->cis_obj; - pgoff_t start = cl_index(obj, fio->fi_start); - pgoff_t end = cl_index(obj, fio->fi_end); - int result = 0; - - if (fio->fi_mode == CL_FSYNC_LOCAL) { - result = osc_cache_wait_range(env, cl2osc(obj), start, end); - } else if (fio->fi_mode == CL_FSYNC_ALL) { - struct osc_io *oio = cl2osc_io(env, slice); - struct osc_async_cbargs *cbargs = &oio->oi_cbarg; - - wait_for_completion(&cbargs->opc_sync); - if (result == 0) - result = cbargs->opc_rc; - } - slice->cis_io->ci_result = result; -} - -static void osc_io_end(const struct lu_env *env, - const struct cl_io_slice *slice) -{ - struct osc_io *oio = cl2osc_io(env, slice); - - if (oio->oi_active) { - osc_extent_release(env, oio->oi_active); - oio->oi_active = NULL; - } -} - -static const struct cl_io_operations osc_io_ops = { - .op = { - [CIT_READ] = { - .cio_iter_init = osc_io_iter_init, - .cio_iter_fini = osc_io_iter_fini, - .cio_start = osc_io_read_start, - .cio_fini = osc_io_fini - }, - [CIT_WRITE] = { - .cio_iter_init = osc_io_write_iter_init, - .cio_iter_fini = osc_io_write_iter_fini, - .cio_start = osc_io_write_start, - .cio_end = osc_io_end, - .cio_fini = osc_io_fini - }, - [CIT_SETATTR] = { - .cio_iter_init = osc_io_iter_init, - .cio_iter_fini = osc_io_iter_fini, - .cio_start = osc_io_setattr_start, - .cio_end = osc_io_setattr_end - }, - [CIT_DATA_VERSION] = { - .cio_start = osc_io_data_version_start, - .cio_end = osc_io_data_version_end, - }, - [CIT_FAULT] = { - .cio_iter_init = osc_io_iter_init, - .cio_iter_fini = osc_io_iter_fini, - .cio_start = osc_io_fault_start, - .cio_end = osc_io_end, - .cio_fini = osc_io_fini - }, - [CIT_FSYNC] = { - .cio_start = osc_io_fsync_start, - .cio_end = osc_io_fsync_end, - .cio_fini = osc_io_fini - }, - [CIT_MISC] = { - .cio_fini = osc_io_fini - } - }, - .cio_read_ahead = osc_io_read_ahead, - .cio_submit = osc_io_submit, - .cio_commit_async = osc_io_commit_async -}; - -/***************************************************************************** - * - * Transfer operations. - * - */ - -int osc_io_init(const struct lu_env *env, - struct cl_object *obj, struct cl_io *io) -{ - struct osc_io *oio = osc_env_io(env); - - CL_IO_SLICE_CLEAN(oio, oi_cl); - cl_io_slice_add(io, &oio->oi_cl, obj, &osc_io_ops); - return 0; -} - -/** @} osc */ |