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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, 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, cl_req for OSC layer.
38 * Author: Nikita Danilov <nikita.danilov@sun.com>
41 #define DEBUG_SUBSYSTEM S_OSC
43 /* class_name2obd() */
44 #include "../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_req_kmem;
57 struct kmem_cache *osc_extent_kmem;
58 struct kmem_cache *osc_quota_kmem;
60 struct lu_kmem_descr osc_caches[] = {
62 .ckd_cache = &osc_lock_kmem,
63 .ckd_name = "osc_lock_kmem",
64 .ckd_size = sizeof(struct osc_lock)
67 .ckd_cache = &osc_object_kmem,
68 .ckd_name = "osc_object_kmem",
69 .ckd_size = sizeof(struct osc_object)
72 .ckd_cache = &osc_thread_kmem,
73 .ckd_name = "osc_thread_kmem",
74 .ckd_size = sizeof(struct osc_thread_info)
77 .ckd_cache = &osc_session_kmem,
78 .ckd_name = "osc_session_kmem",
79 .ckd_size = sizeof(struct osc_session)
82 .ckd_cache = &osc_req_kmem,
83 .ckd_name = "osc_req_kmem",
84 .ckd_size = sizeof(struct osc_req)
87 .ckd_cache = &osc_extent_kmem,
88 .ckd_name = "osc_extent_kmem",
89 .ckd_size = sizeof(struct osc_extent)
92 .ckd_cache = &osc_quota_kmem,
93 .ckd_name = "osc_quota_kmem",
94 .ckd_size = sizeof(struct osc_quota_info)
101 struct lock_class_key osc_ast_guard_class;
103 /*****************************************************************************
109 static struct lu_device *osc2lu_dev(struct osc_device *osc)
111 return &osc->od_cl.cd_lu_dev;
114 /*****************************************************************************
116 * Osc device and device type functions.
120 static void *osc_key_init(const struct lu_context *ctx,
121 struct lu_context_key *key)
123 struct osc_thread_info *info;
125 info = kmem_cache_alloc(osc_thread_kmem, GFP_NOFS | __GFP_ZERO);
127 info = ERR_PTR(-ENOMEM);
131 static void osc_key_fini(const struct lu_context *ctx,
132 struct lu_context_key *key, void *data)
134 struct osc_thread_info *info = data;
136 kmem_cache_free(osc_thread_kmem, info);
139 struct lu_context_key osc_key = {
140 .lct_tags = LCT_CL_THREAD,
141 .lct_init = osc_key_init,
142 .lct_fini = osc_key_fini
145 static void *osc_session_init(const struct lu_context *ctx,
146 struct lu_context_key *key)
148 struct osc_session *info;
150 info = kmem_cache_alloc(osc_session_kmem, GFP_NOFS | __GFP_ZERO);
152 info = ERR_PTR(-ENOMEM);
156 static void osc_session_fini(const struct lu_context *ctx,
157 struct lu_context_key *key, void *data)
159 struct osc_session *info = data;
161 kmem_cache_free(osc_session_kmem, info);
164 struct lu_context_key osc_session_key = {
165 .lct_tags = LCT_SESSION,
166 .lct_init = osc_session_init,
167 .lct_fini = osc_session_fini
170 /* type constructor/destructor: osc_type_{init,fini,start,stop}(). */
171 LU_TYPE_INIT_FINI(osc, &osc_key, &osc_session_key);
173 static int osc_cl_process_config(const struct lu_env *env,
174 struct lu_device *d, struct lustre_cfg *cfg)
176 return osc_process_config_base(d->ld_obd, cfg);
179 static const struct lu_device_operations osc_lu_ops = {
180 .ldo_object_alloc = osc_object_alloc,
181 .ldo_process_config = osc_cl_process_config,
182 .ldo_recovery_complete = NULL
185 static const struct cl_device_operations osc_cl_ops = {
186 .cdo_req_init = osc_req_init
189 static int osc_device_init(const struct lu_env *env, struct lu_device *d,
190 const char *name, struct lu_device *next)
195 static struct lu_device *osc_device_fini(const struct lu_env *env,
201 static struct lu_device *osc_device_free(const struct lu_env *env,
204 struct osc_device *od = lu2osc_dev(d);
206 cl_device_fini(lu2cl_dev(d));
211 static struct lu_device *osc_device_alloc(const struct lu_env *env,
212 struct lu_device_type *t,
213 struct lustre_cfg *cfg)
216 struct osc_device *od;
217 struct obd_device *obd;
220 od = kzalloc(sizeof(*od), GFP_NOFS);
222 return ERR_PTR(-ENOMEM);
224 cl_device_init(&od->od_cl, t);
226 d->ld_ops = &osc_lu_ops;
227 od->od_cl.cd_ops = &osc_cl_ops;
230 obd = class_name2obd(lustre_cfg_string(cfg, 0));
231 LASSERT(obd != NULL);
232 rc = osc_setup(obd, cfg);
234 osc_device_free(env, d);
237 od->od_exp = obd->obd_self_export;
241 static const struct lu_device_type_operations osc_device_type_ops = {
242 .ldto_init = osc_type_init,
243 .ldto_fini = osc_type_fini,
245 .ldto_start = osc_type_start,
246 .ldto_stop = osc_type_stop,
248 .ldto_device_alloc = osc_device_alloc,
249 .ldto_device_free = osc_device_free,
251 .ldto_device_init = osc_device_init,
252 .ldto_device_fini = osc_device_fini
255 struct lu_device_type osc_device_type = {
256 .ldt_tags = LU_DEVICE_CL,
257 .ldt_name = LUSTRE_OSC_NAME,
258 .ldt_ops = &osc_device_type_ops,
259 .ldt_ctx_tags = LCT_CL_THREAD