1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
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15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
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29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * Implementation of cl_object for LOVSUB layer.
38 * Author: Nikita Danilov <nikita.danilov@sun.com>
41 #define DEBUG_SUBSYSTEM S_LOV
43 #include "lov_cl_internal.h"
45 /** \addtogroup lov lov @{ */
47 /*****************************************************************************
49 * Lovsub object operations.
53 int lovsub_object_init(const struct lu_env *env, struct lu_object *obj,
54 const struct lu_object_conf *conf)
56 struct lovsub_device *dev = lu2lovsub_dev(obj->lo_dev);
57 struct lu_object *below;
58 struct lu_device *under;
63 under = &dev->acid_next->cd_lu_dev;
64 below = under->ld_ops->ldo_object_alloc(env, obj->lo_header, under);
66 lu_object_add(obj, below);
74 static void lovsub_object_free(const struct lu_env *env, struct lu_object *obj)
76 struct lovsub_object *los = lu2lovsub(obj);
77 struct lov_object *lov = los->lso_super;
79 LASSERT(lov->lo_type == LLT_RAID0);
80 LASSERT(lov->u.raid0.lo_sub[los->lso_index] == los);
83 lov->u.raid0.lo_sub[los->lso_index] = NULL;
85 lu_object_header_fini(&los->lso_header.coh_lu);
86 OBD_SLAB_FREE_PTR(los, lovsub_object_kmem);
90 static int lovsub_object_print(const struct lu_env *env, void *cookie,
91 lu_printer_t p, const struct lu_object *obj)
93 struct lovsub_object *los = lu2lovsub(obj);
95 return (*p)(env, cookie, "[%i]", los->lso_index);
98 static int lovsub_attr_set(const struct lu_env *env, struct cl_object *obj,
99 const struct cl_attr *attr, unsigned valid)
101 struct lov_object *lov = cl2lovsub(obj)->lso_super;
104 lov_r0(lov)->lo_attr_valid = 0;
108 static int lovsub_object_glimpse(const struct lu_env *env,
109 const struct cl_object *obj,
112 struct lovsub_object *los = cl2lovsub(obj);
115 RETURN(cl_object_glimpse(env, &los->lso_super->lo_cl, lvb));
120 static const struct cl_object_operations lovsub_ops = {
121 .coo_page_init = lovsub_page_init,
122 .coo_lock_init = lovsub_lock_init,
123 .coo_attr_set = lovsub_attr_set,
124 .coo_glimpse = lovsub_object_glimpse
127 static const struct lu_object_operations lovsub_lu_obj_ops = {
128 .loo_object_init = lovsub_object_init,
129 .loo_object_delete = NULL,
130 .loo_object_release = NULL,
131 .loo_object_free = lovsub_object_free,
132 .loo_object_print = lovsub_object_print,
133 .loo_object_invariant = NULL
136 struct lu_object *lovsub_object_alloc(const struct lu_env *env,
137 const struct lu_object_header *_,
138 struct lu_device *dev)
140 struct lovsub_object *los;
141 struct lu_object *obj;
144 OBD_SLAB_ALLOC_PTR(los, lovsub_object_kmem);
146 struct cl_object_header *hdr;
148 obj = lovsub2lu(los);
149 hdr = &los->lso_header;
150 cl_object_header_init(hdr);
151 lu_object_init(obj, &hdr->coh_lu, dev);
152 lu_object_add_top(&hdr->coh_lu, obj);
153 los->lso_cl.co_ops = &lovsub_ops;
154 obj->lo_ops = &lovsub_lu_obj_ops;