1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/*
* 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) 2012, 2015 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 LOVSUB layer.
*
* Author: Nikita Danilov <nikita.danilov@sun.com>
*/
#define DEBUG_SUBSYSTEM S_LOV
#include "lov_cl_internal.h"
/** \addtogroup lov
* @{
*/
/*****************************************************************************
*
* Lovsub object operations.
*
*/
int lovsub_object_init(const struct lu_env *env, struct lu_object *obj,
const struct lu_object_conf *conf)
{
struct lovsub_device *dev = lu2lovsub_dev(obj->lo_dev);
struct lu_object *below;
struct lu_device *under;
int result;
under = &dev->acid_next->cd_lu_dev;
below = under->ld_ops->ldo_object_alloc(env, obj->lo_header, under);
if (below) {
lu_object_add(obj, below);
cl_object_page_init(lu2cl(obj), sizeof(struct lovsub_page));
result = 0;
} else
result = -ENOMEM;
return result;
}
static void lovsub_object_free(const struct lu_env *env, struct lu_object *obj)
{
struct lovsub_object *los = lu2lovsub(obj);
struct lov_object *lov = los->lso_super;
/* We can't assume lov was assigned here, because of the shadow
* object handling in lu_object_find.
*/
if (lov) {
LASSERT(lov->lo_type == LLT_RAID0);
LASSERT(lov->u.raid0.lo_sub[los->lso_index] == los);
spin_lock(&lov->u.raid0.lo_sub_lock);
lov->u.raid0.lo_sub[los->lso_index] = NULL;
spin_unlock(&lov->u.raid0.lo_sub_lock);
}
lu_object_fini(obj);
lu_object_header_fini(&los->lso_header.coh_lu);
kmem_cache_free(lovsub_object_kmem, los);
}
static int lovsub_object_print(const struct lu_env *env, void *cookie,
lu_printer_t p, const struct lu_object *obj)
{
struct lovsub_object *los = lu2lovsub(obj);
return (*p)(env, cookie, "[%d]", los->lso_index);
}
static int lovsub_attr_set(const struct lu_env *env, struct cl_object *obj,
const struct cl_attr *attr, unsigned valid)
{
struct lov_object *lov = cl2lovsub(obj)->lso_super;
lov_r0(lov)->lo_attr_valid = 0;
return 0;
}
static int lovsub_object_glimpse(const struct lu_env *env,
const struct cl_object *obj,
struct ost_lvb *lvb)
{
struct lovsub_object *los = cl2lovsub(obj);
return cl_object_glimpse(env, &los->lso_super->lo_cl, lvb);
}
static const struct cl_object_operations lovsub_ops = {
.coo_page_init = lovsub_page_init,
.coo_lock_init = lovsub_lock_init,
.coo_attr_set = lovsub_attr_set,
.coo_glimpse = lovsub_object_glimpse
};
static const struct lu_object_operations lovsub_lu_obj_ops = {
.loo_object_init = lovsub_object_init,
.loo_object_delete = NULL,
.loo_object_release = NULL,
.loo_object_free = lovsub_object_free,
.loo_object_print = lovsub_object_print,
.loo_object_invariant = NULL
};
struct lu_object *lovsub_object_alloc(const struct lu_env *env,
const struct lu_object_header *unused,
struct lu_device *dev)
{
struct lovsub_object *los;
struct lu_object *obj;
los = kmem_cache_zalloc(lovsub_object_kmem, GFP_NOFS);
if (los) {
struct cl_object_header *hdr;
obj = lovsub2lu(los);
hdr = &los->lso_header;
cl_object_header_init(hdr);
lu_object_init(obj, &hdr->coh_lu, dev);
lu_object_add_top(&hdr->coh_lu, obj);
los->lso_cl.co_ops = &lovsub_ops;
obj->lo_ops = &lovsub_lu_obj_ops;
} else
obj = NULL;
return obj;
}
/** @} lov */
|
