4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
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18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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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30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
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 cfs_list_t oap_pending_item;
60 cfs_list_t 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;
72 struct ldlm_lock *oap_ldlm_lock;
76 #define oap_page oap_brw_page.pg
77 #define oap_count oap_brw_page.count
78 #define oap_brw_flags oap_brw_page.flag
80 static inline struct osc_async_page *brw_page2oap(struct brw_page *pga)
82 return (struct osc_async_page *)container_of(pga, struct osc_async_page,
86 struct osc_cache_waiter {
88 wait_queue_head_t ocw_waitq;
89 struct osc_async_page *ocw_oap;
94 int osc_create(const struct lu_env *env, struct obd_export *exp,
95 struct obdo *oa, struct lov_stripe_md **ea,
96 struct obd_trans_info *oti);
97 int osc_real_create(struct obd_export *exp, struct obdo *oa,
98 struct lov_stripe_md **ea, struct obd_trans_info *oti);
99 void osc_wake_cache_waiters(struct client_obd *cli);
100 int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes);
101 void osc_update_next_shrink(struct client_obd *cli);
106 #include <cl_object.h>
108 extern struct ptlrpc_request_set *PTLRPCD_SET;
110 int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
111 __u64 *flags, ldlm_policy_data_t *policy,
112 struct ost_lvb *lvb, int kms_valid,
113 obd_enqueue_update_f upcall,
114 void *cookie, struct ldlm_enqueue_info *einfo,
115 struct lustre_handle *lockh,
116 struct ptlrpc_request_set *rqset, int async, int agl);
117 int osc_cancel_base(struct lustre_handle *lockh, __u32 mode);
119 int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
120 __u32 type, ldlm_policy_data_t *policy, __u32 mode,
121 __u64 *flags, void *data, struct lustre_handle *lockh,
124 int osc_setattr_async_base(struct obd_export *exp, struct obd_info *oinfo,
125 struct obd_trans_info *oti,
126 obd_enqueue_update_f upcall, void *cookie,
127 struct ptlrpc_request_set *rqset);
128 int osc_punch_base(struct obd_export *exp, struct obd_info *oinfo,
129 obd_enqueue_update_f upcall, void *cookie,
130 struct ptlrpc_request_set *rqset);
131 int osc_sync_base(struct obd_export *exp, struct obd_info *oinfo,
132 obd_enqueue_update_f upcall, void *cookie,
133 struct ptlrpc_request_set *rqset);
135 int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *cfg);
136 int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
137 cfs_list_t *ext_list, int cmd, pdl_policy_t p);
138 int osc_lru_shrink(const struct lu_env *env, struct client_obd *cli,
139 int target, bool force);
140 int osc_lru_reclaim(struct client_obd *cli);
142 extern spinlock_t osc_ast_guard;
143 unsigned long osc_ldlm_weigh_ast(struct ldlm_lock *dlmlock);
145 int osc_cleanup(struct obd_device *obd);
146 int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
149 extern struct lprocfs_seq_vars lprocfs_osc_obd_vars[];
150 int lproc_osc_attach_seqstat(struct obd_device *dev);
152 static inline int lproc_osc_attach_seqstat(struct obd_device *dev) {return 0;}
155 extern struct lu_device_type osc_device_type;
157 static inline int osc_recoverable_error(int rc)
159 return (rc == -EIO || rc == -EROFS || rc == -ENOMEM ||
160 rc == -EAGAIN || rc == -EINPROGRESS);
163 static inline unsigned long rpcs_in_flight(struct client_obd *cli)
165 return cli->cl_r_in_flight + cli->cl_w_in_flight;
169 #define min_t(type,x,y) \
170 ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
174 struct cl_device od_cl;
175 struct obd_export *od_exp;
177 /* Write stats is actually protected by client_obd's lock. */
179 uint64_t os_lockless_writes; /* by bytes */
180 uint64_t os_lockless_reads; /* by bytes */
181 uint64_t os_lockless_truncates; /* by times */
184 /* configuration item(s) */
185 int od_contention_time;
186 int od_lockless_truncate;
189 static inline struct osc_device *obd2osc_dev(const struct obd_device *d)
191 return container_of0(d->obd_lu_dev, struct osc_device, od_cl.cd_lu_dev);
194 extern struct kmem_cache *osc_quota_kmem;
195 struct osc_quota_info {
196 /** linkage for quota hash table */
197 cfs_hlist_node_t oqi_hash;
200 int osc_quota_setup(struct obd_device *obd);
201 int osc_quota_cleanup(struct obd_device *obd);
202 int osc_quota_setdq(struct client_obd *cli, const unsigned int qid[],
203 obd_flag valid, obd_flag flags);
204 int osc_quota_chkdq(struct client_obd *cli, const unsigned int qid[]);
205 int osc_quotactl(struct obd_device *unused, struct obd_export *exp,
206 struct obd_quotactl *oqctl);
207 int osc_quotacheck(struct obd_device *unused, struct obd_export *exp,
208 struct obd_quotactl *oqctl);
209 int osc_quota_poll_check(struct obd_export *exp, struct if_quotacheck *qchk);
211 void osc_inc_unstable_pages(struct ptlrpc_request *req);
212 void osc_dec_unstable_pages(struct ptlrpc_request *req);
213 int osc_over_unstable_soft_limit(struct client_obd *cli);
214 #endif /* OSC_INTERNAL_H */