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29 * This file is part of Lustre, http://www.lustre.org/
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32 * Implementation of cl_object for OSC layer.
34 * Author: Nikita Danilov <nikita.danilov@sun.com>
35 * Author: Jinshan Xiong <jinshan.xiong@intel.com>
38 #define DEBUG_SUBSYSTEM S_OSC
40 #include "osc_cl_internal.h"
46 /*****************************************************************************
52 static struct lu_object *osc2lu(struct osc_object *osc)
54 return &osc->oo_cl.co_lu;
57 static struct osc_object *lu2osc(const struct lu_object *obj)
59 LINVRNT(osc_is_object(obj));
60 return container_of0(obj, struct osc_object, oo_cl.co_lu);
63 /*****************************************************************************
69 static int osc_object_init(const struct lu_env *env, struct lu_object *obj,
70 const struct lu_object_conf *conf)
72 struct osc_object *osc = lu2osc(obj);
73 const struct cl_object_conf *cconf = lu2cl_conf(conf);
76 osc->oo_oinfo = cconf->u.coc_oinfo;
77 spin_lock_init(&osc->oo_seatbelt);
78 for (i = 0; i < CRT_NR; ++i)
79 INIT_LIST_HEAD(&osc->oo_inflight[i]);
81 INIT_LIST_HEAD(&osc->oo_ready_item);
82 INIT_LIST_HEAD(&osc->oo_hp_ready_item);
83 INIT_LIST_HEAD(&osc->oo_write_item);
84 INIT_LIST_HEAD(&osc->oo_read_item);
86 osc->oo_root.rb_node = NULL;
87 INIT_LIST_HEAD(&osc->oo_hp_exts);
88 INIT_LIST_HEAD(&osc->oo_urgent_exts);
89 INIT_LIST_HEAD(&osc->oo_rpc_exts);
90 INIT_LIST_HEAD(&osc->oo_reading_exts);
91 atomic_set(&osc->oo_nr_reads, 0);
92 atomic_set(&osc->oo_nr_writes, 0);
93 spin_lock_init(&osc->oo_lock);
94 spin_lock_init(&osc->oo_tree_lock);
95 spin_lock_init(&osc->oo_ol_spin);
96 INIT_LIST_HEAD(&osc->oo_ol_list);
98 cl_object_page_init(lu2cl(obj), sizeof(struct osc_page));
103 static void osc_object_free(const struct lu_env *env, struct lu_object *obj)
105 struct osc_object *osc = lu2osc(obj);
108 for (i = 0; i < CRT_NR; ++i)
109 LASSERT(list_empty(&osc->oo_inflight[i]));
111 LASSERT(list_empty(&osc->oo_ready_item));
112 LASSERT(list_empty(&osc->oo_hp_ready_item));
113 LASSERT(list_empty(&osc->oo_write_item));
114 LASSERT(list_empty(&osc->oo_read_item));
116 LASSERT(!osc->oo_root.rb_node);
117 LASSERT(list_empty(&osc->oo_hp_exts));
118 LASSERT(list_empty(&osc->oo_urgent_exts));
119 LASSERT(list_empty(&osc->oo_rpc_exts));
120 LASSERT(list_empty(&osc->oo_reading_exts));
121 LASSERT(atomic_read(&osc->oo_nr_reads) == 0);
122 LASSERT(atomic_read(&osc->oo_nr_writes) == 0);
123 LASSERT(list_empty(&osc->oo_ol_list));
126 kmem_cache_free(osc_object_kmem, osc);
129 int osc_lvb_print(const struct lu_env *env, void *cookie,
130 lu_printer_t p, const struct ost_lvb *lvb)
132 return (*p)(env, cookie, "size: %llu mtime: %llu atime: %llu ctime: %llu blocks: %llu",
133 lvb->lvb_size, lvb->lvb_mtime, lvb->lvb_atime,
134 lvb->lvb_ctime, lvb->lvb_blocks);
137 static int osc_object_print(const struct lu_env *env, void *cookie,
138 lu_printer_t p, const struct lu_object *obj)
140 struct osc_object *osc = lu2osc(obj);
141 struct lov_oinfo *oinfo = osc->oo_oinfo;
142 struct osc_async_rc *ar = &oinfo->loi_ar;
144 (*p)(env, cookie, "id: " DOSTID " idx: %d gen: %d kms_valid: %u kms %llu rc: %d force_sync: %d min_xid: %llu ",
145 POSTID(&oinfo->loi_oi), oinfo->loi_ost_idx,
146 oinfo->loi_ost_gen, oinfo->loi_kms_valid, oinfo->loi_kms,
147 ar->ar_rc, ar->ar_force_sync, ar->ar_min_xid);
148 osc_lvb_print(env, cookie, p, &oinfo->loi_lvb);
152 static int osc_attr_get(const struct lu_env *env, struct cl_object *obj,
153 struct cl_attr *attr)
155 struct lov_oinfo *oinfo = cl2osc(obj)->oo_oinfo;
157 cl_lvb2attr(attr, &oinfo->loi_lvb);
158 attr->cat_kms = oinfo->loi_kms_valid ? oinfo->loi_kms : 0;
162 static int osc_attr_update(const struct lu_env *env, struct cl_object *obj,
163 const struct cl_attr *attr, unsigned int valid)
165 struct lov_oinfo *oinfo = cl2osc(obj)->oo_oinfo;
166 struct ost_lvb *lvb = &oinfo->loi_lvb;
168 if (valid & CAT_SIZE)
169 lvb->lvb_size = attr->cat_size;
170 if (valid & CAT_MTIME)
171 lvb->lvb_mtime = attr->cat_mtime;
172 if (valid & CAT_ATIME)
173 lvb->lvb_atime = attr->cat_atime;
174 if (valid & CAT_CTIME)
175 lvb->lvb_ctime = attr->cat_ctime;
176 if (valid & CAT_BLOCKS)
177 lvb->lvb_blocks = attr->cat_blocks;
178 if (valid & CAT_KMS) {
179 CDEBUG(D_CACHE, "set kms from %llu to %llu\n",
180 oinfo->loi_kms, (__u64)attr->cat_kms);
181 loi_kms_set(oinfo, attr->cat_kms);
186 static int osc_object_glimpse(const struct lu_env *env,
187 const struct cl_object *obj, struct ost_lvb *lvb)
189 struct lov_oinfo *oinfo = cl2osc(obj)->oo_oinfo;
191 lvb->lvb_size = oinfo->loi_kms;
192 lvb->lvb_blocks = oinfo->loi_lvb.lvb_blocks;
196 static int osc_object_ast_clear(struct ldlm_lock *lock, void *data)
198 if (lock->l_ast_data == data)
199 lock->l_ast_data = NULL;
200 return LDLM_ITER_CONTINUE;
203 static int osc_object_prune(const struct lu_env *env, struct cl_object *obj)
205 struct osc_object *osc = cl2osc(obj);
206 struct ldlm_res_id *resname = &osc_env_info(env)->oti_resname;
208 LASSERTF(osc->oo_npages == 0,
209 DFID "still have %lu pages, obj: %p, osc: %p\n",
210 PFID(lu_object_fid(&obj->co_lu)), osc->oo_npages, obj, osc);
212 /* DLM locks don't hold a reference of osc_object so we have to
213 * clear it before the object is being destroyed.
215 ostid_build_res_name(&osc->oo_oinfo->loi_oi, resname);
216 ldlm_resource_iterate(osc_export(osc)->exp_obd->obd_namespace, resname,
217 osc_object_ast_clear, osc);
221 void osc_object_set_contended(struct osc_object *obj)
223 obj->oo_contention_time = cfs_time_current();
225 obj->oo_contended = 1;
228 void osc_object_clear_contended(struct osc_object *obj)
230 obj->oo_contended = 0;
233 int osc_object_is_contended(struct osc_object *obj)
235 struct osc_device *dev = lu2osc_dev(obj->oo_cl.co_lu.lo_dev);
236 int osc_contention_time = dev->od_contention_time;
237 unsigned long cur_time = cfs_time_current();
238 unsigned long retry_time;
240 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_OBJECT_CONTENTION))
243 if (!obj->oo_contended)
247 * I like copy-paste. the code is copied from
248 * ll_file_is_contended.
250 retry_time = cfs_time_add(obj->oo_contention_time,
251 cfs_time_seconds(osc_contention_time));
252 if (cfs_time_after(cur_time, retry_time)) {
253 osc_object_clear_contended(obj);
259 static const struct cl_object_operations osc_ops = {
260 .coo_page_init = osc_page_init,
261 .coo_lock_init = osc_lock_init,
262 .coo_io_init = osc_io_init,
263 .coo_attr_get = osc_attr_get,
264 .coo_attr_update = osc_attr_update,
265 .coo_glimpse = osc_object_glimpse,
266 .coo_prune = osc_object_prune
269 static const struct lu_object_operations osc_lu_obj_ops = {
270 .loo_object_init = osc_object_init,
271 .loo_object_release = NULL,
272 .loo_object_free = osc_object_free,
273 .loo_object_print = osc_object_print,
274 .loo_object_invariant = NULL
277 struct lu_object *osc_object_alloc(const struct lu_env *env,
278 const struct lu_object_header *unused,
279 struct lu_device *dev)
281 struct osc_object *osc;
282 struct lu_object *obj;
284 osc = kmem_cache_zalloc(osc_object_kmem, GFP_NOFS);
287 lu_object_init(obj, NULL, dev);
288 osc->oo_cl.co_ops = &osc_ops;
289 obj->lo_ops = &osc_lu_obj_ops;