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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 <obd_class.h>
46 #include "osc_cl_internal.h"
52 cfs_mem_cache_t *osc_page_kmem;
53 cfs_mem_cache_t *osc_lock_kmem;
54 cfs_mem_cache_t *osc_object_kmem;
55 cfs_mem_cache_t *osc_thread_kmem;
56 cfs_mem_cache_t *osc_session_kmem;
57 cfs_mem_cache_t *osc_req_kmem;
58 cfs_mem_cache_t *osc_extent_kmem;
59 cfs_mem_cache_t *osc_quota_kmem;
61 struct lu_kmem_descr osc_caches[] = {
63 .ckd_cache = &osc_page_kmem,
64 .ckd_name = "osc_page_kmem",
65 .ckd_size = sizeof (struct osc_page)
68 .ckd_cache = &osc_lock_kmem,
69 .ckd_name = "osc_lock_kmem",
70 .ckd_size = sizeof (struct osc_lock)
73 .ckd_cache = &osc_object_kmem,
74 .ckd_name = "osc_object_kmem",
75 .ckd_size = sizeof (struct osc_object)
78 .ckd_cache = &osc_thread_kmem,
79 .ckd_name = "osc_thread_kmem",
80 .ckd_size = sizeof (struct osc_thread_info)
83 .ckd_cache = &osc_session_kmem,
84 .ckd_name = "osc_session_kmem",
85 .ckd_size = sizeof (struct osc_session)
88 .ckd_cache = &osc_req_kmem,
89 .ckd_name = "osc_req_kmem",
90 .ckd_size = sizeof (struct osc_req)
93 .ckd_cache = &osc_extent_kmem,
94 .ckd_name = "osc_extent_kmem",
95 .ckd_size = sizeof (struct osc_extent)
98 .ckd_cache = &osc_quota_kmem,
99 .ckd_name = "osc_quota_kmem",
100 .ckd_size = sizeof(struct osc_quota_info)
107 struct lock_class_key osc_ast_guard_class;
109 /*****************************************************************************
115 static struct lu_device *osc2lu_dev(struct osc_device *osc)
117 return &osc->od_cl.cd_lu_dev;
120 /*****************************************************************************
122 * Osc device and device type functions.
126 static void *osc_key_init(const struct lu_context *ctx,
127 struct lu_context_key *key)
129 struct osc_thread_info *info;
131 OBD_SLAB_ALLOC_PTR_GFP(info, osc_thread_kmem, CFS_ALLOC_IO);
133 info = ERR_PTR(-ENOMEM);
137 static void osc_key_fini(const struct lu_context *ctx,
138 struct lu_context_key *key, void *data)
140 struct osc_thread_info *info = data;
141 OBD_SLAB_FREE_PTR(info, osc_thread_kmem);
144 struct lu_context_key osc_key = {
145 .lct_tags = LCT_CL_THREAD,
146 .lct_init = osc_key_init,
147 .lct_fini = osc_key_fini
150 static void *osc_session_init(const struct lu_context *ctx,
151 struct lu_context_key *key)
153 struct osc_session *info;
155 OBD_SLAB_ALLOC_PTR_GFP(info, osc_session_kmem, CFS_ALLOC_IO);
157 info = ERR_PTR(-ENOMEM);
161 static void osc_session_fini(const struct lu_context *ctx,
162 struct lu_context_key *key, void *data)
164 struct osc_session *info = data;
165 OBD_SLAB_FREE_PTR(info, osc_session_kmem);
168 struct lu_context_key osc_session_key = {
169 .lct_tags = LCT_SESSION,
170 .lct_init = osc_session_init,
171 .lct_fini = osc_session_fini
174 /* type constructor/destructor: osc_type_{init,fini,start,stop}(). */
175 LU_TYPE_INIT_FINI(osc, &osc_key, &osc_session_key);
177 static int osc_cl_process_config(const struct lu_env *env,
178 struct lu_device *d, struct lustre_cfg *cfg)
181 RETURN(osc_process_config_base(d->ld_obd, cfg));
184 static const struct lu_device_operations osc_lu_ops = {
185 .ldo_object_alloc = osc_object_alloc,
186 .ldo_process_config = osc_cl_process_config,
187 .ldo_recovery_complete = NULL
190 static const struct cl_device_operations osc_cl_ops = {
191 .cdo_req_init = osc_req_init
194 static int osc_device_init(const struct lu_env *env, struct lu_device *d,
195 const char *name, struct lu_device *next)
200 static struct lu_device *osc_device_fini(const struct lu_env *env,
206 static struct lu_device *osc_device_free(const struct lu_env *env,
209 struct osc_device *od = lu2osc_dev(d);
211 cl_device_fini(lu2cl_dev(d));
216 static struct lu_device *osc_device_alloc(const struct lu_env *env,
217 struct lu_device_type *t,
218 struct lustre_cfg *cfg)
221 struct osc_device *od;
222 struct obd_device *obd;
227 RETURN(ERR_PTR(-ENOMEM));
229 cl_device_init(&od->od_cl, t);
231 d->ld_ops = &osc_lu_ops;
232 od->od_cl.cd_ops = &osc_cl_ops;
235 obd = class_name2obd(lustre_cfg_string(cfg, 0));
236 LASSERT(obd != NULL);
237 rc = osc_setup(obd, cfg);
239 osc_device_free(env, d);
242 od->od_exp = obd->obd_self_export;
246 static const struct lu_device_type_operations osc_device_type_ops = {
247 .ldto_init = osc_type_init,
248 .ldto_fini = osc_type_fini,
250 .ldto_start = osc_type_start,
251 .ldto_stop = osc_type_stop,
253 .ldto_device_alloc = osc_device_alloc,
254 .ldto_device_free = osc_device_free,
256 .ldto_device_init = osc_device_init,
257 .ldto_device_fini = osc_device_fini
260 struct lu_device_type osc_device_type = {
261 .ldt_tags = LU_DEVICE_CL,
262 .ldt_name = LUSTRE_OSC_NAME,
263 .ldt_ops = &osc_device_type_ops,
264 .ldt_ctx_tags = LCT_CL_THREAD