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13 * General Public License version 2 for more details (a copy is included
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21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
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37 #ifndef OSC_INTERNAL_H
38 #define OSC_INTERNAL_H
40 #define OAP_MAGIC 8675309
45 ASYNC_READY = 0x1, /* ap_make_ready will not be called before this
46 page is added to an rpc */
47 ASYNC_URGENT = 0x2, /* page must be put into an RPC before return */
48 ASYNC_COUNT_STABLE = 0x4, /* ap_refresh_count will not be called
49 to give the caller a chance to update
50 or cancel the size of the io */
54 struct osc_async_page {
56 unsigned short oap_cmd;
57 unsigned short oap_interrupted:1;
59 struct list_head oap_pending_item;
60 struct list_head oap_rpc_item;
63 unsigned oap_page_off;
64 enum async_flags oap_async_flags;
66 struct brw_page oap_brw_page;
68 struct ptlrpc_request *oap_request;
69 struct client_obd *oap_cli;
70 struct osc_object *oap_obj;
75 #define oap_page oap_brw_page.pg
76 #define oap_count oap_brw_page.count
77 #define oap_brw_flags oap_brw_page.flag
79 static inline struct osc_async_page *brw_page2oap(struct brw_page *pga)
81 return (struct osc_async_page *)container_of(pga, struct osc_async_page,
85 struct osc_cache_waiter {
86 struct list_head ocw_entry;
87 wait_queue_head_t ocw_waitq;
88 struct osc_async_page *ocw_oap;
93 void osc_wake_cache_waiters(struct client_obd *cli);
94 int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes);
95 void osc_update_next_shrink(struct client_obd *cli);
100 #include <cl_object.h>
102 extern struct ptlrpc_request_set *PTLRPCD_SET;
104 typedef int (*osc_enqueue_upcall_f)(void *cookie, struct lustre_handle *lockh,
107 int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
108 __u64 *flags, ldlm_policy_data_t *policy,
109 struct ost_lvb *lvb, int kms_valid,
110 osc_enqueue_upcall_f upcall,
111 void *cookie, struct ldlm_enqueue_info *einfo,
112 struct ptlrpc_request_set *rqset, int async, int agl);
113 int osc_cancel_base(struct lustre_handle *lockh, __u32 mode);
115 int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
116 __u32 type, ldlm_policy_data_t *policy, __u32 mode,
117 __u64 *flags, void *data, struct lustre_handle *lockh,
120 int osc_setattr_async_base(struct obd_export *exp, struct obd_info *oinfo,
121 struct obd_trans_info *oti,
122 obd_enqueue_update_f upcall, void *cookie,
123 struct ptlrpc_request_set *rqset);
124 int osc_punch_base(struct obd_export *exp, struct obd_info *oinfo,
125 obd_enqueue_update_f upcall, void *cookie,
126 struct ptlrpc_request_set *rqset);
127 int osc_sync_base(struct obd_export *exp, struct obd_info *oinfo,
128 obd_enqueue_update_f upcall, void *cookie,
129 struct ptlrpc_request_set *rqset);
131 int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *cfg);
132 int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
133 struct list_head *ext_list, int cmd, pdl_policy_t p);
134 long osc_lru_shrink(const struct lu_env *env, struct client_obd *cli,
135 long target, bool force);
136 long osc_lru_reclaim(struct client_obd *cli);
138 extern spinlock_t osc_ast_guard;
139 extern struct lu_kmem_descr osc_caches[];
140 extern struct lock_class_key osc_ast_guard_class;
142 unsigned long osc_ldlm_weigh_ast(struct ldlm_lock *dlmlock);
144 int osc_cleanup(struct obd_device *obd);
145 int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
147 #ifdef CONFIG_PROC_FS
148 extern struct lprocfs_vars lprocfs_osc_obd_vars[];
149 int lproc_osc_attach_seqstat(struct obd_device *dev);
151 static inline int lproc_osc_attach_seqstat(struct obd_device *dev) {return 0;}
154 extern struct lu_device_type osc_device_type;
156 static inline int osc_recoverable_error(int rc)
158 return (rc == -EIO || rc == -EROFS || rc == -ENOMEM ||
159 rc == -EAGAIN || rc == -EINPROGRESS);
162 static inline unsigned long rpcs_in_flight(struct client_obd *cli)
164 return cli->cl_r_in_flight + cli->cl_w_in_flight;
168 #define min_t(type,x,y) \
169 ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
173 struct cl_device od_cl;
174 struct obd_export *od_exp;
176 /* Write stats is actually protected by client_obd's lock. */
178 uint64_t os_lockless_writes; /* by bytes */
179 uint64_t os_lockless_reads; /* by bytes */
180 uint64_t os_lockless_truncates; /* by times */
183 /* configuration item(s) */
184 int od_contention_time;
185 int od_lockless_truncate;
188 static inline struct osc_device *obd2osc_dev(const struct obd_device *d)
190 return container_of0(d->obd_lu_dev, struct osc_device, od_cl.cd_lu_dev);
193 extern struct kmem_cache *osc_quota_kmem;
194 struct osc_quota_info {
195 /** linkage for quota hash table */
196 struct hlist_node oqi_hash;
199 int osc_quota_setup(struct obd_device *obd);
200 int osc_quota_cleanup(struct obd_device *obd);
201 int osc_quota_setdq(struct client_obd *cli, const unsigned int qid[],
202 obd_flag valid, obd_flag flags);
203 int osc_quota_chkdq(struct client_obd *cli, const unsigned int qid[]);
204 int osc_quotactl(struct obd_device *unused, struct obd_export *exp,
205 struct obd_quotactl *oqctl);
206 int osc_quotacheck(struct obd_device *unused, struct obd_export *exp,
207 struct obd_quotactl *oqctl);
208 int osc_quota_poll_check(struct obd_export *exp, struct if_quotacheck *qchk);
209 void osc_inc_unstable_pages(struct ptlrpc_request *req);
210 void osc_dec_unstable_pages(struct ptlrpc_request *req);
211 bool osc_over_unstable_soft_limit(struct client_obd *cli);
213 * Bit flags for osc_dlm_lock_at_pageoff().
217 * Just check if the desired lock exists, it won't hold reference
220 OSC_DAP_FL_TEST_LOCK = 1 << 0,
222 * Return the lock even if it is being canceled.
224 OSC_DAP_FL_CANCELING = 1 << 1
226 struct ldlm_lock *osc_dlmlock_at_pgoff(const struct lu_env *env,
227 struct osc_object *obj, pgoff_t index,
228 enum osc_dap_flags flags);
229 #endif /* OSC_INTERNAL_H */