-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* 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
{
}
-struct cl_page *osc_oap2cl_page(struct osc_async_page *oap)
-{
- return container_of(oap, struct osc_page, ops_oap)->ops_cl.cpl_page;
-}
-
-static void osc_io_unplug(const struct lu_env *env, struct osc_object *osc,
- struct client_obd *cli)
-{
- loi_list_maint(cli, osc->oo_oinfo);
- osc_check_rpcs(env, cli);
- client_obd_list_unlock(&cli->cl_loi_list_lock);
-}
-
/**
* 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_base().
+ * 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,
- enum cl_req_priority priority)
+ enum cl_req_type crt, struct cl_2queue *queue)
{
struct cl_page *page;
struct cl_page *tmp;
- struct osc_object *osc0 = NULL;
struct client_obd *cli = NULL;
struct osc_object *osc = NULL; /* to keep gcc happy */
struct osc_page *opg;
struct cl_io *io;
+ CFS_LIST_HEAD (list);
- struct cl_page_list *qin = &queue->c2_qin;
- struct cl_page_list *qout = &queue->c2_qout;
- int queued = 0;
- int result = 0;
+ struct cl_page_list *qin = &queue->c2_qin;
+ struct cl_page_list *qout = &queue->c2_qout;
+ int queued = 0;
+ int result = 0;
+ int cmd;
+ int brw_flags;
+ int max_pages;
- LASSERT(qin->pl_nr > 0);
+ LASSERT(qin->pl_nr > 0);
+
+ CDEBUG(D_CACHE, "%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;
- CDEBUG(D_INFO, "%i %i\n", qin->pl_nr, crt);
/*
* 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;
- struct obd_export *exp;
/* Top level IO. */
io = page->cp_owner;
opg = osc_cl_page_osc(page);
oap = &opg->ops_oap;
- osc = cl2osc(opg->ops_cl.cpl_obj);
- exp = osc_export(osc);
+ LASSERT(osc == oap->oap_obj);
- if (priority > CRP_NORMAL) {
- cfs_spin_lock(&oap->oap_lock);
- oap->oap_async_flags |= ASYNC_HP;
- cfs_spin_unlock(&oap->oap_lock);
- }
- /*
- * This can be checked without cli->cl_loi_list_lock, because
- * ->oap_*_item are always manipulated when the page is owned.
- */
- if (!cfs_list_empty(&oap->oap_urgent_item) ||
- !cfs_list_empty(&oap->oap_rpc_item)) {
+ if (!cfs_list_empty(&oap->oap_pending_item) ||
+ !cfs_list_empty(&oap->oap_rpc_item)) {
+ CDEBUG(D_CACHE, "Busy oap %p page %p for submit.\n",
+ oap, opg);
result = -EBUSY;
break;
}
- if (osc0 == NULL) { /* first iteration */
- cli = &exp->exp_obd->u.cli;
- osc0 = osc;
- } else /* check that all pages are against the same object
- * (for now) */
- LASSERT(osc == osc0);
- if (queued++ == 0)
- client_obd_list_lock(&cli->cl_loi_list_lock);
result = cl_page_prep(env, io, page, crt);
- if (result == 0) {
- cl_page_list_move(qout, qin, page);
- if (cfs_list_empty(&oap->oap_pending_item)) {
- osc_io_submit_page(env, cl2osc_io(env, ios),
- opg, crt);
- } else {
- result = osc_set_async_flags_base(cli,
- osc->oo_oinfo,
- oap,
- OSC_FLAGS);
- /*
- * bug 18881: we can't just break out here when
- * error occurs after cl_page_prep has been
- * called against the page. The correct
- * way is to call page's completion routine,
- * as in osc_oap_interrupted. For simplicity,
- * we just force osc_set_async_flags_base() to
- * not return error.
- */
- LASSERT(result == 0);
- }
- opg->ops_submit_time = cfs_time_current();
- } else {
+ if (result != 0) {
LASSERT(result < 0);
if (result != -EALREADY)
break;
* is not dirty.
*/
result = 0;
+ continue;
}
- /*
- * We might hold client_obd_list_lock() for too long and cause
- * soft-lockups (see bug 16651). But on the other hand, pages
- * are queued here with ASYNC_URGENT flag, thus will be sent
- * out immediately once osc_io_unplug() be called, possibly
- * resulting sub-optimal RPCs.
- *
- * We think creating optimal-sized RPCs is more important than
- * avoiding the transient soft-lockups, plus I believe the
- * soft-locks only happen in full debug testing.
- */
- }
-
- LASSERT(ergo(result == 0, cli != NULL));
- LASSERT(ergo(result == 0, osc == osc0));
-
- if (queued > 0)
- osc_io_unplug(env, osc, cli);
- CDEBUG(D_INFO, "%i/%i %i\n", qin->pl_nr, qout->pl_nr, result);
- return qout->pl_nr > 0 ? 0 : result;
+ cl_page_list_move(qout, qin, page);
+ oap->oap_async_flags = ASYNC_URGENT|ASYNC_READY;
+ oap->oap_async_flags |= ASYNC_COUNT_STABLE;
+
+ osc_page_submit(env, opg, crt, brw_flags);
+ cfs_list_add_tail(&oap->oap_pending_item, &list);
+ 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);
+
+ CDEBUG(D_INFO, "%d/%d %d\n", qin->pl_nr, qout->pl_nr, result);
+ return qout->pl_nr > 0 ? 0 : result;
}
static void osc_page_touch_at(const struct lu_env *env,
{
struct osc_device *dev = lu2osc_dev(slice->cpl_obj->co_lu.lo_dev);
struct obd_import *imp = class_exp2cliimp(dev->od_exp);
-
+ struct osc_io *oio = cl2osc_io(env, ios);
+ int result = 0;
ENTRY;
/*
* This implements OBD_BRW_CHECK logic from old client.
*/
- RETURN(imp == NULL || imp->imp_invalid ? -EIO : 0);
+ if (imp == NULL || imp->imp_invalid)
+ result = -EIO;
+ if (result == 0 && oio->oi_lockless)
+ /* this page contains `invalid' data, but who cares?
+ * nobody can access the invalid data.
+ * in osc_io_commit_write(), we're going to write exact
+ * [from, to) bytes of this page to OST. -jay */
+ cl_page_export(env, slice->cpl_page, 1);
+
+ RETURN(result);
}
static int osc_io_commit_write(const struct lu_env *env,
const struct cl_page_slice *slice,
unsigned from, unsigned to)
{
+ struct osc_io *oio = cl2osc_io(env, ios);
struct osc_page *opg = cl2osc_page(slice);
struct osc_object *obj = cl2osc(opg->ops_cl.cpl_obj);
struct osc_async_page *oap = &opg->ops_oap;
cfs_capable(CFS_CAP_SYS_RESOURCE))
oap->oap_brw_flags |= OBD_BRW_NOQUOTA;
+ if (oio->oi_lockless)
+ /* see osc_io_prepare_write() for lockless io handling. */
+ cl_page_clip(env, slice->cpl_page, from, to);
+
RETURN(0);
}
io = ios->cis_io;
fio = &io->u.ci_fault;
- CDEBUG(D_INFO, "%lu %i %i\n",
+ CDEBUG(D_INFO, "%lu %d %d\n",
fio->ft_index, fio->ft_writable, fio->ft_nob);
/*
* If mapping is writeable, adjust kms to cover this page,
RETURN(0);
}
-static int osc_setattr_upcall(void *a, int rc)
+static int osc_async_upcall(void *a, int rc)
{
- struct osc_setattr_cbargs *args = a;
+ struct osc_async_cbargs *args = a;
args->opc_rc = rc;
- cfs_complete(&args->opc_sync);
+ complete(&args->opc_sync);
return 0;
}
-/* Disable osc_trunc_check() because it is naturally race between read and
- * truncate. See bug 20645 for details.
- */
-#if 0 && defined(__KERNEL__)
+#if defined(__KERNEL__)
/**
* 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 cl_page *page, void *cbdata)
+{
+ const struct cl_page_slice *slice;
+ struct osc_page *ops;
+ struct osc_async_page *oap;
+ __u64 start = *(__u64 *)cbdata;
+
+ slice = cl_page_at(page, &osc_device_type);
+ LASSERT(slice != NULL);
+ ops = cl2osc_page(slice);
+ oap = &ops->ops_oap;
+
+ if (oap->oap_cmd & OBD_BRW_WRITE &&
+ !cfs_list_empty(&oap->oap_pending_item))
+ CL_PAGE_DEBUG(D_ERROR, env, page, "exists " LPU64 "/%s.\n",
+ start, current->comm);
+
+#ifdef __linux__
+ {
+ cfs_page_t *vmpage = cl_page_vmpage(env, page);
+ if (PageLocked(vmpage))
+ CDEBUG(D_CACHE, "page %p index %lu locked for %d.\n",
+ ops, page->cp_index,
+ (oap->oap_cmd & OBD_BRW_RWMASK));
+ }
+#endif
+
+ return CLP_GANG_OKAY;
+}
+
static void osc_trunc_check(const struct lu_env *env, struct cl_io *io,
- struct osc_io *oio, size_t size)
+ struct osc_io *oio, __u64 size)
{
- struct osc_page *cp;
- struct osc_object *obj;
- struct cl_object *clob;
- struct cl_page *page;
- struct cl_page_list *list;
- int partial;
- pgoff_t start;
+ struct cl_object *clob;
+ int partial;
+ pgoff_t start;
clob = oio->oi_cl.cis_obj;
- obj = cl2osc(clob);
start = cl_index(clob, size);
partial = cl_offset(clob, start) < size;
- list = &osc_env_info(env)->oti_plist;
/*
* Complain if there are pages in the truncated region.
- *
- * XXX this is quite expensive check.
*/
- cl_page_list_init(list);
- cl_page_gang_lookup(env, clob, io, start + partial, CL_PAGE_EOF, list, 0);
-
- cl_page_list_for_each(page, list)
- CL_PAGE_DEBUG(D_ERROR, env, page, "exists %lu\n", start);
-
- cl_page_list_disown(env, io, list);
- cl_page_list_fini(env, list);
-
- cfs_spin_lock(&obj->oo_seatbelt);
- cfs_list_for_each_entry(cp, &obj->oo_inflight[CRT_WRITE],
- ops_inflight) {
- page = cp->ops_cl.cpl_page;
- if (page->cp_index >= start + partial) {
- cfs_task_t *submitter;
-
- submitter = cp->ops_submitter;
- /*
- * XXX Linux specific debugging stuff.
- */
- CL_PAGE_DEBUG(D_ERROR, env, page, "%s/%i %lu\n",
- submitter->comm, submitter->pid, start);
- libcfs_debug_dumpstack(submitter);
- }
- }
- cfs_spin_unlock(&obj->oo_seatbelt);
+ cl_page_gang_lookup(env, clob, io, start + partial, CL_PAGE_EOF,
+ trunc_check_cb, (void *)&size);
}
#else /* __KERNEL__ */
-# define osc_trunc_check(env, io, oio, size) do {;} while (0)
+static void osc_trunc_check(const struct lu_env *env, struct cl_io *io,
+ struct osc_io *oio, __u64 size)
+{
+ return;
+}
#endif
static int osc_io_setattr_start(const struct lu_env *env,
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_setattr_cbargs *cbargs = &oio->oi_setattr_cbarg;
- loff_t size = io->u.ci_setattr.sa_attr.lvb_size;
- unsigned int ia_valid = io->u.ci_setattr.sa_valid;
- int result = 0;
- struct obd_info oinfo = { { { 0 } } };
-
- if (ia_valid & ATTR_SIZE)
- osc_trunc_check(env, io, oio, size);
-
- if (oio->oi_lockless == 0) {
- cl_object_attr_lock(obj);
- result = cl_object_attr_get(env, obj, attr);
- if (result == 0) {
- unsigned int cl_valid = 0;
-
- if (ia_valid & ATTR_SIZE) {
- attr->cat_size = attr->cat_kms = size;
- cl_valid = (CAT_SIZE | CAT_KMS);
- }
- if (ia_valid & ATTR_MTIME_SET) {
- attr->cat_mtime = io->u.ci_setattr.sa_attr.lvb_mtime;
- cl_valid |= CAT_MTIME;
- }
- if (ia_valid & ATTR_ATIME_SET) {
- attr->cat_atime = io->u.ci_setattr.sa_attr.lvb_atime;
- cl_valid |= CAT_ATIME;
- }
- if (ia_valid & ATTR_CTIME_SET) {
- attr->cat_ctime = io->u.ci_setattr.sa_attr.lvb_ctime;
+ 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;
+ struct obd_info oinfo = { { { 0 } } };
+
+ /* truncate cache dirty pages first */
+ if (cl_io_is_trunc(io))
+ result = osc_cache_truncate_start(env, oio, cl2osc(obj), size);
+
+ 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 = 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_set(env, obj, attr, cl_valid);
oinfo.oi_oa = oa;
oinfo.oi_capa = io->u.ci_setattr.sa_capa;
- cfs_init_completion(&cbargs->opc_sync);
+ init_completion(&cbargs->opc_sync);
if (ia_valid & ATTR_SIZE)
result = osc_punch_base(osc_export(cl2osc(obj)),
- &oinfo, osc_setattr_upcall,
+ &oinfo, osc_async_upcall,
cbargs, PTLRPCD_SET);
else
result = osc_setattr_async_base(osc_export(cl2osc(obj)),
&oinfo, NULL,
- osc_setattr_upcall,
+ 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 osc_setattr_cbargs *cbargs = &oio->oi_setattr_cbarg;
- int result;
-
- cfs_wait_for_completion(&cbargs->opc_sync);
+ 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;
- result = io->ci_result = cbargs->opc_rc;
+ if (cbargs->opc_rpc_sent) {
+ wait_for_completion(&cbargs->opc_sync);
+ result = io->ci_result = cbargs->opc_rc;
+ }
if (result == 0) {
- struct cl_object *obj = slice->cis_obj;
if (oio->oi_lockless) {
/* lockless truncate */
struct osc_device *osd = lu2osc_dev(obj->co_lu.lo_dev);
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);
+ if (oio->oi_trunc != NULL) {
+ osc_cache_truncate_end(env, oio, cl2osc(obj));
+ oio->oi_trunc = NULL;
+ }
+ }
}
static int osc_io_read_start(const struct lu_env *env,
ENTRY;
if (oio->oi_lockless == 0) {
+ OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_DELAY_SETTIME, 1);
cl_object_attr_lock(obj);
result = cl_object_attr_get(env, obj, attr);
if (result == 0) {
RETURN(result);
}
+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 obd_info *oinfo = &oio->oi_info;
+ struct lov_oinfo *loi = obj->oo_oinfo;
+ struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
+ int rc = 0;
+ ENTRY;
+
+ memset(oa, 0, sizeof(*oa));
+ oa->o_id = loi->loi_id;
+ oa->o_seq = loi->loi_seq;
+ 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);
+
+ memset(oinfo, 0, sizeof(*oinfo));
+ oinfo->oi_oa = oa;
+ oinfo->oi_capa = fio->fi_capa;
+ init_completion(&cbargs->opc_sync);
+
+ rc = osc_sync_base(osc_export(obj), oinfo, 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;
+ ENTRY;
+
+ 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] = {
},
[CIT_WRITE] = {
.cio_start = osc_io_write_start,
+ .cio_end = osc_io_end,
.cio_fini = osc_io_fini
},
[CIT_SETATTR] = {
.cio_end = osc_io_setattr_end
},
[CIT_FAULT] = {
- .cio_fini = osc_io_fini,
- .cio_start = osc_io_fault_start
- },
+ .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
}
* fields.
*/
static void osc_req_attr_set(const struct lu_env *env,
- const struct cl_req_slice *slice,
- const struct cl_object *obj,
- struct cl_req_attr *attr, obd_valid flags)
+ const struct cl_req_slice *slice,
+ const struct cl_object *obj,
+ struct cl_req_attr *attr, obd_valid flags)
{
- struct lov_oinfo *oinfo;
- struct cl_req *clerq;
- struct cl_page *apage; /* _some_ page in @clerq */
- struct cl_lock *lock; /* _some_ lock protecting @apage */
- struct osc_lock *olck;
- struct osc_page *opg;
- struct obdo *oa;
-
- oa = attr->cra_oa;
- oinfo = cl2osc(obj)->oo_oinfo;
+ struct lov_oinfo *oinfo;
+ struct cl_req *clerq;
+ struct cl_page *apage; /* _some_ page in @clerq */
+ struct cl_lock *lock; /* _some_ lock protecting @apage */
+ struct osc_lock *olck;
+ struct osc_page *opg;
+ struct obdo *oa;
+ struct ost_lvb *lvb;
+
+ oinfo = cl2osc(obj)->oo_oinfo;
+ lvb = &oinfo->loi_lvb;
+ oa = attr->cra_oa;
+
+ if ((flags & OBD_MD_FLMTIME) != 0) {
+ oa->o_mtime = lvb->lvb_mtime;
+ oa->o_valid |= OBD_MD_FLMTIME;
+ }
+ if ((flags & OBD_MD_FLATIME) != 0) {
+ oa->o_atime = lvb->lvb_atime;
+ oa->o_valid |= OBD_MD_FLATIME;
+ }
+ if ((flags & OBD_MD_FLCTIME) != 0) {
+ oa->o_ctime = lvb->lvb_ctime;
+ oa->o_valid |= OBD_MD_FLCTIME;
+ }
if (flags & OBD_MD_FLID) {
oa->o_id = oinfo->loi_id;
oa->o_valid |= OBD_MD_FLID;