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13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
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27 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
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30 * Copyright (c) 2012, 2015, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * Implementation of cl_device, for OSC layer.
38 * Author: Nikita Danilov <nikita.danilov@sun.com>
41 #define DEBUG_SUBSYSTEM S_OSC
43 /* class_name2obd() */
44 #include <obd_class.h>
46 #include "osc_cl_internal.h"
52 struct kmem_cache *osc_lock_kmem;
53 struct kmem_cache *osc_object_kmem;
54 struct kmem_cache *osc_thread_kmem;
55 struct kmem_cache *osc_session_kmem;
56 struct kmem_cache *osc_extent_kmem;
57 struct kmem_cache *osc_quota_kmem;
59 struct lu_kmem_descr osc_caches[] = {
61 .ckd_cache = &osc_lock_kmem,
62 .ckd_name = "osc_lock_kmem",
63 .ckd_size = sizeof (struct osc_lock)
66 .ckd_cache = &osc_object_kmem,
67 .ckd_name = "osc_object_kmem",
68 .ckd_size = sizeof (struct osc_object)
71 .ckd_cache = &osc_thread_kmem,
72 .ckd_name = "osc_thread_kmem",
73 .ckd_size = sizeof (struct osc_thread_info)
76 .ckd_cache = &osc_session_kmem,
77 .ckd_name = "osc_session_kmem",
78 .ckd_size = sizeof (struct osc_session)
81 .ckd_cache = &osc_extent_kmem,
82 .ckd_name = "osc_extent_kmem",
83 .ckd_size = sizeof (struct osc_extent)
86 .ckd_cache = &osc_quota_kmem,
87 .ckd_name = "osc_quota_kmem",
88 .ckd_size = sizeof(struct osc_quota_info)
95 /*****************************************************************************
101 static struct lu_device *osc2lu_dev(struct osc_device *osc)
103 return &osc->od_cl.cd_lu_dev;
106 /*****************************************************************************
108 * Osc device and device type functions.
112 static void *osc_key_init(const struct lu_context *ctx,
113 struct lu_context_key *key)
115 struct osc_thread_info *info;
117 OBD_SLAB_ALLOC_PTR_GFP(info, osc_thread_kmem, GFP_NOFS);
119 info = ERR_PTR(-ENOMEM);
123 static void osc_key_fini(const struct lu_context *ctx,
124 struct lu_context_key *key, void *data)
126 struct osc_thread_info *info = data;
127 OBD_SLAB_FREE_PTR(info, osc_thread_kmem);
130 struct lu_context_key osc_key = {
131 .lct_tags = LCT_CL_THREAD,
132 .lct_init = osc_key_init,
133 .lct_fini = osc_key_fini
136 static void *osc_session_init(const struct lu_context *ctx,
137 struct lu_context_key *key)
139 struct osc_session *info;
141 OBD_SLAB_ALLOC_PTR_GFP(info, osc_session_kmem, GFP_NOFS);
143 info = ERR_PTR(-ENOMEM);
147 static void osc_session_fini(const struct lu_context *ctx,
148 struct lu_context_key *key, void *data)
150 struct osc_session *info = data;
151 OBD_SLAB_FREE_PTR(info, osc_session_kmem);
154 struct lu_context_key osc_session_key = {
155 .lct_tags = LCT_SESSION,
156 .lct_init = osc_session_init,
157 .lct_fini = osc_session_fini
160 /* type constructor/destructor: osc_type_{init,fini,start,stop}(). */
161 LU_TYPE_INIT_FINI(osc, &osc_key, &osc_session_key);
163 static int osc_cl_process_config(const struct lu_env *env,
164 struct lu_device *d, struct lustre_cfg *cfg)
167 RETURN(osc_process_config_base(d->ld_obd, cfg));
170 static const struct lu_device_operations osc_lu_ops = {
171 .ldo_object_alloc = osc_object_alloc,
172 .ldo_process_config = osc_cl_process_config,
173 .ldo_recovery_complete = NULL
176 static int osc_device_init(const struct lu_env *env, struct lu_device *d,
177 const char *name, struct lu_device *next)
182 static struct lu_device *osc_device_fini(const struct lu_env *env,
188 static struct lu_device *osc_device_free(const struct lu_env *env,
191 struct osc_device *od = lu2osc_dev(d);
193 cl_device_fini(lu2cl_dev(d));
198 static struct lu_device *osc_device_alloc(const struct lu_env *env,
199 struct lu_device_type *t,
200 struct lustre_cfg *cfg)
203 struct osc_device *od;
204 struct obd_device *obd;
209 RETURN(ERR_PTR(-ENOMEM));
211 cl_device_init(&od->od_cl, t);
213 d->ld_ops = &osc_lu_ops;
216 obd = class_name2obd(lustre_cfg_string(cfg, 0));
217 LASSERT(obd != NULL);
218 rc = osc_setup(obd, cfg);
220 osc_device_free(env, d);
223 od->od_exp = obd->obd_self_export;
227 static const struct lu_device_type_operations osc_device_type_ops = {
228 .ldto_init = osc_type_init,
229 .ldto_fini = osc_type_fini,
231 .ldto_start = osc_type_start,
232 .ldto_stop = osc_type_stop,
234 .ldto_device_alloc = osc_device_alloc,
235 .ldto_device_free = osc_device_free,
237 .ldto_device_init = osc_device_init,
238 .ldto_device_fini = osc_device_fini
241 struct lu_device_type osc_device_type = {
242 .ldt_tags = LU_DEVICE_CL,
243 .ldt_name = LUSTRE_OSC_NAME,
244 .ldt_ops = &osc_device_type_ops,
245 .ldt_ctx_tags = LCT_CL_THREAD