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34 * Implementation of cl_device, cl_req for OSC layer.
36 * Author: Nikita Danilov <nikita.danilov@sun.com>
39 #define DEBUG_SUBSYSTEM S_OSC
41 /* class_name2obd() */
42 #include <obd_class.h>
44 #include "osc_cl_internal.h"
50 cfs_mem_cache_t *osc_page_kmem;
51 cfs_mem_cache_t *osc_lock_kmem;
52 cfs_mem_cache_t *osc_object_kmem;
53 cfs_mem_cache_t *osc_thread_kmem;
54 cfs_mem_cache_t *osc_session_kmem;
55 cfs_mem_cache_t *osc_req_kmem;
56 cfs_mem_cache_t *osc_extent_kmem;
57 cfs_mem_cache_t *osc_quota_kmem;
59 struct lu_kmem_descr osc_caches[] = {
61 .ckd_cache = &osc_page_kmem,
62 .ckd_name = "osc_page_kmem",
63 .ckd_size = sizeof (struct osc_page)
66 .ckd_cache = &osc_lock_kmem,
67 .ckd_name = "osc_lock_kmem",
68 .ckd_size = sizeof (struct osc_lock)
71 .ckd_cache = &osc_object_kmem,
72 .ckd_name = "osc_object_kmem",
73 .ckd_size = sizeof (struct osc_object)
76 .ckd_cache = &osc_thread_kmem,
77 .ckd_name = "osc_thread_kmem",
78 .ckd_size = sizeof (struct osc_thread_info)
81 .ckd_cache = &osc_session_kmem,
82 .ckd_name = "osc_session_kmem",
83 .ckd_size = sizeof (struct osc_session)
86 .ckd_cache = &osc_req_kmem,
87 .ckd_name = "osc_req_kmem",
88 .ckd_size = sizeof (struct osc_req)
91 .ckd_cache = &osc_extent_kmem,
92 .ckd_name = "osc_extent_kmem",
93 .ckd_size = sizeof (struct osc_extent)
96 .ckd_cache = &osc_quota_kmem,
97 .ckd_name = "osc_quota_kmem",
98 .ckd_size = sizeof(struct osc_quota_info)
105 struct lock_class_key osc_ast_guard_class;
107 /*****************************************************************************
113 static struct lu_device *osc2lu_dev(struct osc_device *osc)
115 return &osc->od_cl.cd_lu_dev;
118 /*****************************************************************************
120 * Osc device and device type functions.
124 static void *osc_key_init(const struct lu_context *ctx,
125 struct lu_context_key *key)
127 struct osc_thread_info *info;
129 OBD_SLAB_ALLOC_PTR_GFP(info, osc_thread_kmem, CFS_ALLOC_IO);
131 info = ERR_PTR(-ENOMEM);
135 static void osc_key_fini(const struct lu_context *ctx,
136 struct lu_context_key *key, void *data)
138 struct osc_thread_info *info = data;
139 OBD_SLAB_FREE_PTR(info, osc_thread_kmem);
142 struct lu_context_key osc_key = {
143 .lct_tags = LCT_CL_THREAD,
144 .lct_init = osc_key_init,
145 .lct_fini = osc_key_fini
148 static void *osc_session_init(const struct lu_context *ctx,
149 struct lu_context_key *key)
151 struct osc_session *info;
153 OBD_SLAB_ALLOC_PTR_GFP(info, osc_session_kmem, CFS_ALLOC_IO);
155 info = ERR_PTR(-ENOMEM);
159 static void osc_session_fini(const struct lu_context *ctx,
160 struct lu_context_key *key, void *data)
162 struct osc_session *info = data;
163 OBD_SLAB_FREE_PTR(info, osc_session_kmem);
166 struct lu_context_key osc_session_key = {
167 .lct_tags = LCT_SESSION,
168 .lct_init = osc_session_init,
169 .lct_fini = osc_session_fini
172 /* type constructor/destructor: osc_type_{init,fini,start,stop}(). */
173 LU_TYPE_INIT_FINI(osc, &osc_key, &osc_session_key);
175 static int osc_cl_process_config(const struct lu_env *env,
176 struct lu_device *d, struct lustre_cfg *cfg)
179 RETURN(osc_process_config_base(d->ld_obd, cfg));
182 static const struct lu_device_operations osc_lu_ops = {
183 .ldo_object_alloc = osc_object_alloc,
184 .ldo_process_config = osc_cl_process_config,
185 .ldo_recovery_complete = NULL
188 static const struct cl_device_operations osc_cl_ops = {
189 .cdo_req_init = osc_req_init
192 static int osc_device_init(const struct lu_env *env, struct lu_device *d,
193 const char *name, struct lu_device *next)
198 static struct lu_device *osc_device_fini(const struct lu_env *env,
204 static struct lu_device *osc_device_free(const struct lu_env *env,
207 struct osc_device *od = lu2osc_dev(d);
209 cl_device_fini(lu2cl_dev(d));
214 static struct lu_device *osc_device_alloc(const struct lu_env *env,
215 struct lu_device_type *t,
216 struct lustre_cfg *cfg)
219 struct osc_device *od;
220 struct obd_device *obd;
225 RETURN(ERR_PTR(-ENOMEM));
227 cl_device_init(&od->od_cl, t);
229 d->ld_ops = &osc_lu_ops;
230 od->od_cl.cd_ops = &osc_cl_ops;
233 obd = class_name2obd(lustre_cfg_string(cfg, 0));
234 LASSERT(obd != NULL);
235 rc = osc_setup(obd, cfg);
237 osc_device_free(env, d);
240 od->od_exp = obd->obd_self_export;
244 static const struct lu_device_type_operations osc_device_type_ops = {
245 .ldto_init = osc_type_init,
246 .ldto_fini = osc_type_fini,
248 .ldto_start = osc_type_start,
249 .ldto_stop = osc_type_stop,
251 .ldto_device_alloc = osc_device_alloc,
252 .ldto_device_free = osc_device_free,
254 .ldto_device_init = osc_device_init,
255 .ldto_device_fini = osc_device_fini
258 struct lu_device_type osc_device_type = {
259 .ldt_tags = LU_DEVICE_CL,
260 .ldt_name = LUSTRE_OSC_NAME,
261 .ldt_ops = &osc_device_type_ops,
262 .ldt_ctx_tags = LCT_CL_THREAD