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33 * This file is part of Lustre, http://www.lustre.org/
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36 * Implementation of cl_object for OSC layer.
38 * Author: Nikita Danilov <nikita.danilov@sun.com>
39 * Author: Jinshan Xiong <jinshan.xiong@intel.com>
42 #define DEBUG_SUBSYSTEM S_OSC
44 #include "osc_cl_internal.h"
50 /*****************************************************************************
56 static struct lu_object *osc2lu(struct osc_object *osc)
58 return &osc->oo_cl.co_lu;
61 static struct osc_object *lu2osc(const struct lu_object *obj)
63 LINVRNT(osc_is_object(obj));
64 return container_of0(obj, struct osc_object, oo_cl.co_lu);
67 /*****************************************************************************
73 static int osc_object_init(const struct lu_env *env, struct lu_object *obj,
74 const struct lu_object_conf *conf)
76 struct osc_object *osc = lu2osc(obj);
77 const struct cl_object_conf *cconf = lu2cl_conf(conf);
80 osc->oo_oinfo = cconf->u.coc_oinfo;
81 #ifdef CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK
82 mutex_init(&osc->oo_debug_mutex);
84 spin_lock_init(&osc->oo_seatbelt);
85 for (i = 0; i < CRT_NR; ++i)
86 INIT_LIST_HEAD(&osc->oo_inflight[i]);
88 INIT_LIST_HEAD(&osc->oo_ready_item);
89 INIT_LIST_HEAD(&osc->oo_hp_ready_item);
90 INIT_LIST_HEAD(&osc->oo_write_item);
91 INIT_LIST_HEAD(&osc->oo_read_item);
93 osc->oo_root.rb_node = NULL;
94 INIT_LIST_HEAD(&osc->oo_hp_exts);
95 INIT_LIST_HEAD(&osc->oo_urgent_exts);
96 INIT_LIST_HEAD(&osc->oo_rpc_exts);
97 INIT_LIST_HEAD(&osc->oo_reading_exts);
98 atomic_set(&osc->oo_nr_reads, 0);
99 atomic_set(&osc->oo_nr_writes, 0);
100 spin_lock_init(&osc->oo_lock);
101 spin_lock_init(&osc->oo_tree_lock);
102 spin_lock_init(&osc->oo_ol_spin);
103 INIT_LIST_HEAD(&osc->oo_ol_list);
105 cl_object_page_init(lu2cl(obj), sizeof(struct osc_page));
110 static void osc_object_free(const struct lu_env *env, struct lu_object *obj)
112 struct osc_object *osc = lu2osc(obj);
115 for (i = 0; i < CRT_NR; ++i)
116 LASSERT(list_empty(&osc->oo_inflight[i]));
118 LASSERT(list_empty(&osc->oo_ready_item));
119 LASSERT(list_empty(&osc->oo_hp_ready_item));
120 LASSERT(list_empty(&osc->oo_write_item));
121 LASSERT(list_empty(&osc->oo_read_item));
123 LASSERT(osc->oo_root.rb_node == NULL);
124 LASSERT(list_empty(&osc->oo_hp_exts));
125 LASSERT(list_empty(&osc->oo_urgent_exts));
126 LASSERT(list_empty(&osc->oo_rpc_exts));
127 LASSERT(list_empty(&osc->oo_reading_exts));
128 LASSERT(atomic_read(&osc->oo_nr_reads) == 0);
129 LASSERT(atomic_read(&osc->oo_nr_writes) == 0);
130 LASSERT(list_empty(&osc->oo_ol_list));
133 OBD_SLAB_FREE_PTR(osc, osc_object_kmem);
136 int osc_lvb_print(const struct lu_env *env, void *cookie,
137 lu_printer_t p, const struct ost_lvb *lvb)
139 return (*p)(env, cookie, "size: "LPU64" mtime: "LPU64" atime: "LPU64" "
140 "ctime: "LPU64" blocks: "LPU64,
141 lvb->lvb_size, lvb->lvb_mtime, lvb->lvb_atime,
142 lvb->lvb_ctime, lvb->lvb_blocks);
145 static int osc_object_print(const struct lu_env *env, void *cookie,
146 lu_printer_t p, const struct lu_object *obj)
148 struct osc_object *osc = lu2osc(obj);
149 struct lov_oinfo *oinfo = osc->oo_oinfo;
150 struct osc_async_rc *ar = &oinfo->loi_ar;
152 (*p)(env, cookie, "id: "DOSTID" "
153 "idx: %d gen: %d kms_valid: %u kms "LPU64" "
154 "rc: %d force_sync: %d min_xid: "LPU64" ",
155 POSTID(&oinfo->loi_oi), oinfo->loi_ost_idx,
156 oinfo->loi_ost_gen, oinfo->loi_kms_valid, oinfo->loi_kms,
157 ar->ar_rc, ar->ar_force_sync, ar->ar_min_xid);
158 osc_lvb_print(env, cookie, p, &oinfo->loi_lvb);
163 static int osc_attr_get(const struct lu_env *env, struct cl_object *obj,
164 struct cl_attr *attr)
166 struct lov_oinfo *oinfo = cl2osc(obj)->oo_oinfo;
168 cl_lvb2attr(attr, &oinfo->loi_lvb);
169 attr->cat_kms = oinfo->loi_kms_valid ? oinfo->loi_kms : 0;
173 int osc_attr_set(const struct lu_env *env, struct cl_object *obj,
174 const struct cl_attr *attr, unsigned valid)
176 struct lov_oinfo *oinfo = cl2osc(obj)->oo_oinfo;
177 struct ost_lvb *lvb = &oinfo->loi_lvb;
179 if (valid & CAT_SIZE)
180 lvb->lvb_size = attr->cat_size;
181 if (valid & CAT_MTIME)
182 lvb->lvb_mtime = attr->cat_mtime;
183 if (valid & CAT_ATIME)
184 lvb->lvb_atime = attr->cat_atime;
185 if (valid & CAT_CTIME)
186 lvb->lvb_ctime = attr->cat_ctime;
187 if (valid & CAT_BLOCKS)
188 lvb->lvb_blocks = attr->cat_blocks;
189 if (valid & CAT_KMS) {
190 CDEBUG(D_CACHE, "set kms from "LPU64"to "LPU64"\n",
191 oinfo->loi_kms, (__u64)attr->cat_kms);
192 loi_kms_set(oinfo, attr->cat_kms);
197 static int osc_object_glimpse(const struct lu_env *env,
198 const struct cl_object *obj, struct ost_lvb *lvb)
200 struct lov_oinfo *oinfo = cl2osc(obj)->oo_oinfo;
203 lvb->lvb_size = oinfo->loi_kms;
204 lvb->lvb_blocks = oinfo->loi_lvb.lvb_blocks;
208 static int osc_object_ast_clear(struct ldlm_lock *lock, void *data)
212 LASSERT(lock->l_granted_mode == lock->l_req_mode);
213 if (lock->l_ast_data == data)
214 lock->l_ast_data = NULL;
215 RETURN(LDLM_ITER_CONTINUE);
218 static int osc_object_prune(const struct lu_env *env, struct cl_object *obj)
220 struct osc_object *osc = cl2osc(obj);
221 struct ldlm_res_id *resname = &osc_env_info(env)->oti_resname;
223 LASSERTF(osc->oo_npages == 0,
224 DFID "still have %lu pages, obj: %p, osc: %p\n",
225 PFID(lu_object_fid(&obj->co_lu)), osc->oo_npages, obj, osc);
227 /* DLM locks don't hold a reference of osc_object so we have to
228 * clear it before the object is being destroyed. */
229 ostid_build_res_name(&osc->oo_oinfo->loi_oi, resname);
230 ldlm_resource_iterate(osc_export(osc)->exp_obd->obd_namespace, resname,
231 osc_object_ast_clear, osc);
235 void osc_object_set_contended(struct osc_object *obj)
237 obj->oo_contention_time = cfs_time_current();
239 obj->oo_contended = 1;
242 void osc_object_clear_contended(struct osc_object *obj)
244 obj->oo_contended = 0;
247 int osc_object_is_contended(struct osc_object *obj)
249 struct osc_device *dev = lu2osc_dev(obj->oo_cl.co_lu.lo_dev);
250 int osc_contention_time = dev->od_contention_time;
251 cfs_time_t cur_time = cfs_time_current();
252 cfs_time_t retry_time;
254 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_OBJECT_CONTENTION))
257 if (!obj->oo_contended)
261 * I like copy-paste. the code is copied from
262 * ll_file_is_contended.
264 retry_time = cfs_time_add(obj->oo_contention_time,
265 cfs_time_seconds(osc_contention_time));
266 if (cfs_time_after(cur_time, retry_time)) {
267 osc_object_clear_contended(obj);
273 static const struct cl_object_operations osc_ops = {
274 .coo_page_init = osc_page_init,
275 .coo_lock_init = osc_lock_init,
276 .coo_io_init = osc_io_init,
277 .coo_attr_get = osc_attr_get,
278 .coo_attr_set = osc_attr_set,
279 .coo_glimpse = osc_object_glimpse,
280 .coo_prune = osc_object_prune
283 static const struct lu_object_operations osc_lu_obj_ops = {
284 .loo_object_init = osc_object_init,
285 .loo_object_release = NULL,
286 .loo_object_free = osc_object_free,
287 .loo_object_print = osc_object_print,
288 .loo_object_invariant = NULL
291 struct lu_object *osc_object_alloc(const struct lu_env *env,
292 const struct lu_object_header *unused,
293 struct lu_device *dev)
295 struct osc_object *osc;
296 struct lu_object *obj;
298 OBD_SLAB_ALLOC_PTR_GFP(osc, osc_object_kmem, GFP_NOFS);
301 lu_object_init(obj, NULL, dev);
302 osc->oo_cl.co_ops = &osc_ops;
303 obj->lo_ops = &osc_lu_obj_ops;