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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;
58 struct lu_kmem_descr osc_caches[] = {
60 .ckd_cache = &osc_page_kmem,
61 .ckd_name = "osc_page_kmem",
62 .ckd_size = sizeof (struct osc_page)
65 .ckd_cache = &osc_lock_kmem,
66 .ckd_name = "osc_lock_kmem",
67 .ckd_size = sizeof (struct osc_lock)
70 .ckd_cache = &osc_object_kmem,
71 .ckd_name = "osc_object_kmem",
72 .ckd_size = sizeof (struct osc_object)
75 .ckd_cache = &osc_thread_kmem,
76 .ckd_name = "osc_thread_kmem",
77 .ckd_size = sizeof (struct osc_thread_info)
80 .ckd_cache = &osc_session_kmem,
81 .ckd_name = "osc_session_kmem",
82 .ckd_size = sizeof (struct osc_session)
85 .ckd_cache = &osc_req_kmem,
86 .ckd_name = "osc_req_kmem",
87 .ckd_size = sizeof (struct osc_req)
90 .ckd_cache = &osc_extent_kmem,
91 .ckd_name = "osc_extent_kmem",
92 .ckd_size = sizeof (struct osc_extent)
99 cfs_lock_class_key_t osc_ast_guard_class;
101 /*****************************************************************************
107 static struct lu_device *osc2lu_dev(struct osc_device *osc)
109 return &osc->od_cl.cd_lu_dev;
112 /*****************************************************************************
114 * Osc device and device type functions.
118 static void *osc_key_init(const struct lu_context *ctx,
119 struct lu_context_key *key)
121 struct osc_thread_info *info;
123 OBD_SLAB_ALLOC_PTR_GFP(info, osc_thread_kmem, CFS_ALLOC_IO);
125 info = ERR_PTR(-ENOMEM);
129 static void osc_key_fini(const struct lu_context *ctx,
130 struct lu_context_key *key, void *data)
132 struct osc_thread_info *info = data;
133 OBD_SLAB_FREE_PTR(info, osc_thread_kmem);
136 struct lu_context_key osc_key = {
137 .lct_tags = LCT_CL_THREAD,
138 .lct_init = osc_key_init,
139 .lct_fini = osc_key_fini
142 static void *osc_session_init(const struct lu_context *ctx,
143 struct lu_context_key *key)
145 struct osc_session *info;
147 OBD_SLAB_ALLOC_PTR_GFP(info, osc_session_kmem, CFS_ALLOC_IO);
149 info = ERR_PTR(-ENOMEM);
153 static void osc_session_fini(const struct lu_context *ctx,
154 struct lu_context_key *key, void *data)
156 struct osc_session *info = data;
157 OBD_SLAB_FREE_PTR(info, osc_session_kmem);
160 struct lu_context_key osc_session_key = {
161 .lct_tags = LCT_SESSION,
162 .lct_init = osc_session_init,
163 .lct_fini = osc_session_fini
166 /* type constructor/destructor: osc_type_{init,fini,start,stop}(). */
167 LU_TYPE_INIT_FINI(osc, &osc_key, &osc_session_key);
169 static int osc_cl_process_config(const struct lu_env *env,
170 struct lu_device *d, struct lustre_cfg *cfg)
173 RETURN(osc_process_config_base(d->ld_obd, cfg));
176 static const struct lu_device_operations osc_lu_ops = {
177 .ldo_object_alloc = osc_object_alloc,
178 .ldo_process_config = osc_cl_process_config,
179 .ldo_recovery_complete = NULL
182 static const struct cl_device_operations osc_cl_ops = {
183 .cdo_req_init = osc_req_init
186 static int osc_device_init(const struct lu_env *env, struct lu_device *d,
187 const char *name, struct lu_device *next)
192 static struct lu_device *osc_device_fini(const struct lu_env *env,
198 static struct lu_device *osc_device_free(const struct lu_env *env,
201 struct osc_device *od = lu2osc_dev(d);
203 cl_device_fini(lu2cl_dev(d));
208 static struct lu_device *osc_device_alloc(const struct lu_env *env,
209 struct lu_device_type *t,
210 struct lustre_cfg *cfg)
213 struct osc_device *od;
214 struct obd_device *obd;
219 RETURN(ERR_PTR(-ENOMEM));
221 cl_device_init(&od->od_cl, t);
223 d->ld_ops = &osc_lu_ops;
224 od->od_cl.cd_ops = &osc_cl_ops;
227 obd = class_name2obd(lustre_cfg_string(cfg, 0));
228 LASSERT(obd != NULL);
229 rc = osc_setup(obd, cfg);
231 osc_device_free(env, d);
234 od->od_exp = obd->obd_self_export;
238 static const struct lu_device_type_operations osc_device_type_ops = {
239 .ldto_init = osc_type_init,
240 .ldto_fini = osc_type_fini,
242 .ldto_start = osc_type_start,
243 .ldto_stop = osc_type_stop,
245 .ldto_device_alloc = osc_device_alloc,
246 .ldto_device_free = osc_device_free,
248 .ldto_device_init = osc_device_init,
249 .ldto_device_fini = osc_device_fini
252 struct lu_device_type osc_device_type = {
253 .ldt_tags = LU_DEVICE_CL,
254 .ldt_name = LUSTRE_OSC_NAME,
255 .ldt_ops = &osc_device_type_ops,
256 .ldt_ctx_tags = LCT_CL_THREAD