1 /*
2 * GPL HEADER START
3 *
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
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.
9 *
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).
15 *
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
19 *
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
22 * have any questions.
23 *
24 * GPL HEADER END
25 */
26 /*
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
29 *
30 * Copyright (c) 2011, 2012, Intel Corporation.
31 */
32 /*
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
35 */
36
37 #ifndef OSC_INTERNAL_H
38 #define OSC_INTERNAL_H
39
40 #define OAP_MAGIC 8675309
41
42 extern atomic_t osc_pool_req_count;
43 extern unsigned int osc_reqpool_maxreqcount;
44 extern struct ptlrpc_request_pool *osc_rq_pool;
45
46 struct lu_env;
47
48 enum async_flags {
49 ASYNC_READY = 0x1, /* ap_make_ready will not be called before this
50 page is added to an rpc */
51 ASYNC_URGENT = 0x2, /* page must be put into an RPC before return */
52 ASYNC_COUNT_STABLE = 0x4, /* ap_refresh_count will not be called
53 to give the caller a chance to update
54 or cancel the size of the io */
55 ASYNC_HP = 0x10,
56 };
57
58 struct osc_async_page {
59 int oap_magic;
60 unsigned short oap_cmd;
61 unsigned short oap_interrupted:1;
62
63 struct list_head oap_pending_item;
64 struct list_head oap_rpc_item;
65
66 u64 oap_obj_off;
67 unsigned oap_page_off;
68 enum async_flags oap_async_flags;
69
70 struct brw_page oap_brw_page;
71
72 struct ptlrpc_request *oap_request;
73 struct client_obd *oap_cli;
74 struct osc_object *oap_obj;
75
76 struct ldlm_lock *oap_ldlm_lock;
77 spinlock_t oap_lock;
78 };
79
80 #define oap_page oap_brw_page.pg
81 #define oap_count oap_brw_page.count
82 #define oap_brw_flags oap_brw_page.flag
83
84 struct osc_cache_waiter {
85 struct list_head ocw_entry;
86 wait_queue_head_t ocw_waitq;
87 struct osc_async_page *ocw_oap;
88 int ocw_grant;
89 int ocw_rc;
90 };
91
92 int osc_create(const struct lu_env *env, struct obd_export *exp,
93 struct obdo *oa, struct lov_stripe_md **ea,
94 struct obd_trans_info *oti);
95 int osc_real_create(struct obd_export *exp, struct obdo *oa,
96 struct lov_stripe_md **ea, struct obd_trans_info *oti);
97 void osc_wake_cache_waiters(struct client_obd *cli);
98 int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes);
99 void osc_update_next_shrink(struct client_obd *cli);
100
101 /*
102 * cl integration.
103 */
104 #include "../include/cl_object.h"
105
106 extern struct ptlrpc_request_set *PTLRPCD_SET;
107
108 int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
109 __u64 *flags, ldlm_policy_data_t *policy,
110 struct ost_lvb *lvb, int kms_valid,
111 obd_enqueue_update_f upcall,
112 void *cookie, struct ldlm_enqueue_info *einfo,
113 struct lustre_handle *lockh,
114 struct ptlrpc_request_set *rqset, int async, int agl);
115 int osc_cancel_base(struct lustre_handle *lockh, __u32 mode);
116
117 int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
118 __u32 type, ldlm_policy_data_t *policy, __u32 mode,
119 __u64 *flags, void *data, struct lustre_handle *lockh,
120 int unref);
121
122 int osc_setattr_async_base(struct obd_export *exp, struct obd_info *oinfo,
123 struct obd_trans_info *oti,
124 obd_enqueue_update_f upcall, void *cookie,
125 struct ptlrpc_request_set *rqset);
126 int osc_punch_base(struct obd_export *exp, struct obd_info *oinfo,
127 obd_enqueue_update_f upcall, void *cookie,
128 struct ptlrpc_request_set *rqset);
129 int osc_sync_base(struct obd_export *exp, struct obd_info *oinfo,
130 obd_enqueue_update_f upcall, void *cookie,
131 struct ptlrpc_request_set *rqset);
132
133 int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *cfg);
134 int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
135 struct list_head *ext_list, int cmd);
136 int osc_lru_shrink(struct client_obd *cli, int target);
137
138 extern spinlock_t osc_ast_guard;
139
140 int osc_cleanup(struct obd_device *obd);
141 int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
142
143 int lproc_osc_attach_seqstat(struct obd_device *dev);
144 void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars);
145
146 extern struct lu_device_type osc_device_type;
147
osc_recoverable_error(int rc)148 static inline int osc_recoverable_error(int rc)
149 {
150 return (rc == -EIO || rc == -EROFS || rc == -ENOMEM ||
151 rc == -EAGAIN || rc == -EINPROGRESS);
152 }
153
rpcs_in_flight(struct client_obd * cli)154 static inline unsigned long rpcs_in_flight(struct client_obd *cli)
155 {
156 return cli->cl_r_in_flight + cli->cl_w_in_flight;
157 }
158
159 struct osc_device {
160 struct cl_device od_cl;
161 struct obd_export *od_exp;
162
163 /* Write stats is actually protected by client_obd's lock. */
164 struct osc_stats {
165 uint64_t os_lockless_writes; /* by bytes */
166 uint64_t os_lockless_reads; /* by bytes */
167 uint64_t os_lockless_truncates; /* by times */
168 } od_stats;
169
170 /* configuration item(s) */
171 int od_contention_time;
172 int od_lockless_truncate;
173 };
174
obd2osc_dev(const struct obd_device * d)175 static inline struct osc_device *obd2osc_dev(const struct obd_device *d)
176 {
177 return container_of0(d->obd_lu_dev, struct osc_device, od_cl.cd_lu_dev);
178 }
179
180 int osc_dlm_lock_pageref(struct ldlm_lock *dlm);
181
182 extern struct kmem_cache *osc_quota_kmem;
183 struct osc_quota_info {
184 /** linkage for quota hash table */
185 struct hlist_node oqi_hash;
186 u32 oqi_id;
187 };
188
189 int osc_quota_setup(struct obd_device *obd);
190 int osc_quota_cleanup(struct obd_device *obd);
191 int osc_quota_setdq(struct client_obd *cli, const unsigned int qid[],
192 u32 valid, u32 flags);
193 int osc_quota_chkdq(struct client_obd *cli, const unsigned int qid[]);
194 int osc_quotactl(struct obd_device *unused, struct obd_export *exp,
195 struct obd_quotactl *oqctl);
196 int osc_quotacheck(struct obd_device *unused, struct obd_export *exp,
197 struct obd_quotactl *oqctl);
198 int osc_quota_poll_check(struct obd_export *exp, struct if_quotacheck *qchk);
199
200 #endif /* OSC_INTERNAL_H */
201