1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
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29 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
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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"
49 /*****************************************************************************
51 * Lovsub object operations.
55 int lovsub_object_init(const struct lu_env *env, struct lu_object *obj,
56 const struct lu_object_conf *conf)
58 struct lovsub_device *dev = lu2lovsub_dev(obj->lo_dev);
59 struct lu_object *below;
60 struct lu_device *under;
65 under = &dev->acid_next->cd_lu_dev;
66 below = under->ld_ops->ldo_object_alloc(env, obj->lo_header, under);
68 lu_object_add(obj, below);
76 static void lovsub_object_free(const struct lu_env *env, struct lu_object *obj)
78 struct lovsub_object *los = lu2lovsub(obj);
79 struct lov_object *lov = los->lso_super;
82 /* We can't assume lov was assigned here, because of the shadow
83 * object handling in lu_object_find.
86 LASSERT(lov->lo_type == LLT_RAID0);
87 LASSERT(lov->u.raid0.lo_sub[los->lso_index] == los);
88 cfs_spin_lock(&lov->u.raid0.lo_sub_lock);
89 lov->u.raid0.lo_sub[los->lso_index] = NULL;
90 cfs_spin_unlock(&lov->u.raid0.lo_sub_lock);
94 lu_object_header_fini(&los->lso_header.coh_lu);
95 OBD_SLAB_FREE_PTR(los, lovsub_object_kmem);
99 static int lovsub_object_print(const struct lu_env *env, void *cookie,
100 lu_printer_t p, const struct lu_object *obj)
102 struct lovsub_object *los = lu2lovsub(obj);
104 return (*p)(env, cookie, "[%i]", los->lso_index);
107 static int lovsub_attr_set(const struct lu_env *env, struct cl_object *obj,
108 const struct cl_attr *attr, unsigned valid)
110 struct lov_object *lov = cl2lovsub(obj)->lso_super;
113 lov_r0(lov)->lo_attr_valid = 0;
117 static int lovsub_object_glimpse(const struct lu_env *env,
118 const struct cl_object *obj,
121 struct lovsub_object *los = cl2lovsub(obj);
124 RETURN(cl_object_glimpse(env, &los->lso_super->lo_cl, lvb));
129 static const struct cl_object_operations lovsub_ops = {
130 .coo_page_init = lovsub_page_init,
131 .coo_lock_init = lovsub_lock_init,
132 .coo_attr_set = lovsub_attr_set,
133 .coo_glimpse = lovsub_object_glimpse
136 static const struct lu_object_operations lovsub_lu_obj_ops = {
137 .loo_object_init = lovsub_object_init,
138 .loo_object_delete = NULL,
139 .loo_object_release = NULL,
140 .loo_object_free = lovsub_object_free,
141 .loo_object_print = lovsub_object_print,
142 .loo_object_invariant = NULL
145 struct lu_object *lovsub_object_alloc(const struct lu_env *env,
146 const struct lu_object_header *unused,
147 struct lu_device *dev)
149 struct lovsub_object *los;
150 struct lu_object *obj;
153 OBD_SLAB_ALLOC_PTR_GFP(los, lovsub_object_kmem, CFS_ALLOC_IO);
155 struct cl_object_header *hdr;
157 obj = lovsub2lu(los);
158 hdr = &los->lso_header;
159 cl_object_header_init(hdr);
160 lu_object_init(obj, &hdr->coh_lu, dev);
161 lu_object_add_top(&hdr->coh_lu, obj);
162 los->lso_cl.co_ops = &lovsub_ops;
163 obj->lo_ops = &lovsub_lu_obj_ops;