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/*
* 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.sun.com/software/products/lustre/docs/GPLv2.pdf
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
* GPL HEADER END
*/
/*
* 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/
* Lustre is a trademark of Sun Microsystems, Inc.
*
* Implementation of cl_object for OSC layer.
*
* Author: Nikita Danilov <nikita.danilov@sun.com>
*/
#define DEBUG_SUBSYSTEM S_OSC
#include "osc_cl_internal.h"
/** \addtogroup osc
* @{
*/
/*****************************************************************************
*
* Type conversions.
*
*/
static struct lu_object *osc2lu(struct osc_object *osc)
{
return &osc->oo_cl.co_lu;
}
static struct osc_object *lu2osc(const struct lu_object *obj)
{
LINVRNT(osc_is_object(obj));
return container_of0(obj, struct osc_object, oo_cl.co_lu);
}
/*****************************************************************************
*
* Object operations.
*
*/
static int osc_object_init(const struct lu_env *env, struct lu_object *obj,
const struct lu_object_conf *conf)
{
struct osc_object *osc = lu2osc(obj);
const struct cl_object_conf *cconf = lu2cl_conf(conf);
int i;
osc->oo_oinfo = cconf->u.coc_oinfo;
spin_lock_init(&osc->oo_seatbelt);
for (i = 0; i < CRT_NR; ++i)
INIT_LIST_HEAD(&osc->oo_inflight[i]);
INIT_LIST_HEAD(&osc->oo_ready_item);
INIT_LIST_HEAD(&osc->oo_hp_ready_item);
INIT_LIST_HEAD(&osc->oo_write_item);
INIT_LIST_HEAD(&osc->oo_read_item);
osc->oo_root.rb_node = NULL;
INIT_LIST_HEAD(&osc->oo_hp_exts);
INIT_LIST_HEAD(&osc->oo_urgent_exts);
INIT_LIST_HEAD(&osc->oo_rpc_exts);
INIT_LIST_HEAD(&osc->oo_reading_exts);
atomic_set(&osc->oo_nr_reads, 0);
atomic_set(&osc->oo_nr_writes, 0);
spin_lock_init(&osc->oo_lock);
cl_object_page_init(lu2cl(obj), sizeof(struct osc_page));
return 0;
}
static void osc_object_free(const struct lu_env *env, struct lu_object *obj)
{
struct osc_object *osc = lu2osc(obj);
int i;
for (i = 0; i < CRT_NR; ++i)
LASSERT(list_empty(&osc->oo_inflight[i]));
LASSERT(list_empty(&osc->oo_ready_item));
LASSERT(list_empty(&osc->oo_hp_ready_item));
LASSERT(list_empty(&osc->oo_write_item));
LASSERT(list_empty(&osc->oo_read_item));
LASSERT(osc->oo_root.rb_node == NULL);
LASSERT(list_empty(&osc->oo_hp_exts));
LASSERT(list_empty(&osc->oo_urgent_exts));
LASSERT(list_empty(&osc->oo_rpc_exts));
LASSERT(list_empty(&osc->oo_reading_exts));
LASSERT(atomic_read(&osc->oo_nr_reads) == 0);
LASSERT(atomic_read(&osc->oo_nr_writes) == 0);
lu_object_fini(obj);
OBD_SLAB_FREE_PTR(osc, osc_object_kmem);
}
int osc_lvb_print(const struct lu_env *env, void *cookie,
lu_printer_t p, const struct ost_lvb *lvb)
{
return (*p)(env, cookie, "size: %llu mtime: %llu atime: %llu ctime: %llu blocks: %llu",
lvb->lvb_size, lvb->lvb_mtime, lvb->lvb_atime,
lvb->lvb_ctime, lvb->lvb_blocks);
}
static int osc_object_print(const struct lu_env *env, void *cookie,
lu_printer_t p, const struct lu_object *obj)
{
struct osc_object *osc = lu2osc(obj);
struct lov_oinfo *oinfo = osc->oo_oinfo;
struct osc_async_rc *ar = &oinfo->loi_ar;
(*p)(env, cookie, "id: " DOSTID " idx: %d gen: %d kms_valid: %u kms %llu rc: %d force_sync: %d min_xid: %llu ",
POSTID(&oinfo->loi_oi), oinfo->loi_ost_idx,
oinfo->loi_ost_gen, oinfo->loi_kms_valid, oinfo->loi_kms,
ar->ar_rc, ar->ar_force_sync, ar->ar_min_xid);
osc_lvb_print(env, cookie, p, &oinfo->loi_lvb);
return 0;
}
static int osc_attr_get(const struct lu_env *env, struct cl_object *obj,
struct cl_attr *attr)
{
struct lov_oinfo *oinfo = cl2osc(obj)->oo_oinfo;
cl_lvb2attr(attr, &oinfo->loi_lvb);
attr->cat_kms = oinfo->loi_kms_valid ? oinfo->loi_kms : 0;
return 0;
}
int osc_attr_set(const struct lu_env *env, struct cl_object *obj,
const struct cl_attr *attr, unsigned valid)
{
struct lov_oinfo *oinfo = cl2osc(obj)->oo_oinfo;
struct ost_lvb *lvb = &oinfo->loi_lvb;
if (valid & CAT_SIZE)
lvb->lvb_size = attr->cat_size;
if (valid & CAT_MTIME)
lvb->lvb_mtime = attr->cat_mtime;
if (valid & CAT_ATIME)
lvb->lvb_atime = attr->cat_atime;
if (valid & CAT_CTIME)
lvb->lvb_ctime = attr->cat_ctime;
if (valid & CAT_BLOCKS)
lvb->lvb_blocks = attr->cat_blocks;
if (valid & CAT_KMS) {
CDEBUG(D_CACHE, "set kms from %llu to %llu\n",
oinfo->loi_kms, (__u64)attr->cat_kms);
loi_kms_set(oinfo, attr->cat_kms);
}
return 0;
}
static int osc_object_glimpse(const struct lu_env *env,
const struct cl_object *obj, struct ost_lvb *lvb)
{
struct lov_oinfo *oinfo = cl2osc(obj)->oo_oinfo;
lvb->lvb_size = oinfo->loi_kms;
lvb->lvb_blocks = oinfo->loi_lvb.lvb_blocks;
return 0;
}
void osc_object_set_contended(struct osc_object *obj)
{
obj->oo_contention_time = cfs_time_current();
/* mb(); */
obj->oo_contended = 1;
}
void osc_object_clear_contended(struct osc_object *obj)
{
obj->oo_contended = 0;
}
int osc_object_is_contended(struct osc_object *obj)
{
struct osc_device *dev = lu2osc_dev(obj->oo_cl.co_lu.lo_dev);
int osc_contention_time = dev->od_contention_time;
unsigned long cur_time = cfs_time_current();
unsigned long retry_time;
if (OBD_FAIL_CHECK(OBD_FAIL_OSC_OBJECT_CONTENTION))
return 1;
if (!obj->oo_contended)
return 0;
/*
* I like copy-paste. the code is copied from
* ll_file_is_contended.
*/
retry_time = cfs_time_add(obj->oo_contention_time,
cfs_time_seconds(osc_contention_time));
if (cfs_time_after(cur_time, retry_time)) {
osc_object_clear_contended(obj);
return 0;
}
return 1;
}
static const struct cl_object_operations osc_ops = {
.coo_page_init = osc_page_init,
.coo_lock_init = osc_lock_init,
.coo_io_init = osc_io_init,
.coo_attr_get = osc_attr_get,
.coo_attr_set = osc_attr_set,
.coo_glimpse = osc_object_glimpse
};
static const struct lu_object_operations osc_lu_obj_ops = {
.loo_object_init = osc_object_init,
.loo_object_delete = NULL,
.loo_object_release = NULL,
.loo_object_free = osc_object_free,
.loo_object_print = osc_object_print,
.loo_object_invariant = NULL
};
struct lu_object *osc_object_alloc(const struct lu_env *env,
const struct lu_object_header *unused,
struct lu_device *dev)
{
struct osc_object *osc;
struct lu_object *obj;
OBD_SLAB_ALLOC_PTR_GFP(osc, osc_object_kmem, GFP_NOFS);
if (osc != NULL) {
obj = osc2lu(osc);
lu_object_init(obj, NULL, dev);
osc->oo_cl.co_ops = &osc_ops;
obj->lo_ops = &osc_lu_obj_ops;
} else
obj = NULL;
return obj;
}
/** @} osc */
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