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).
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18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2016, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
33 #ifndef OSC_INTERNAL_H
34 #define OSC_INTERNAL_H
36 #define OAP_MAGIC 8675309
38 #include <lustre_osc.h>
40 extern atomic_t osc_pool_req_count;
41 extern unsigned int osc_reqpool_maxreqcount;
42 extern struct ptlrpc_request_pool *osc_rq_pool;
44 void osc_wake_cache_waiters(struct client_obd *cli);
45 int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes);
46 void osc_update_next_shrink(struct client_obd *cli);
47 int lru_queue_work(const struct lu_env *env, void *data);
48 int osc_extent_finish(const struct lu_env *env, struct osc_extent *ext,
50 int osc_extent_release(const struct lu_env *env, struct osc_extent *ext);
51 int osc_lock_discard_pages(const struct lu_env *env, struct osc_object *osc,
52 pgoff_t start, pgoff_t end, bool discard);
54 extern struct ptlrpc_request_set *PTLRPCD_SET;
56 int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
57 __u64 *flags, union ldlm_policy_data *policy,
58 struct ost_lvb *lvb, int kms_valid,
59 osc_enqueue_upcall_f upcall,
60 void *cookie, struct ldlm_enqueue_info *einfo,
61 struct ptlrpc_request_set *rqset, int async,
64 int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
65 enum ldlm_type type, union ldlm_policy_data *policy,
66 enum ldlm_mode mode, __u64 *flags, void *data,
67 struct lustre_handle *lockh, int unref);
69 int osc_setattr_async(struct obd_export *exp, struct obdo *oa,
70 obd_enqueue_update_f upcall, void *cookie,
71 struct ptlrpc_request_set *rqset);
72 int osc_sync_base(struct osc_object *obj, struct obdo *oa,
73 obd_enqueue_update_f upcall, void *cookie,
74 struct ptlrpc_request_set *rqset);
75 int osc_ladvise_base(struct obd_export *exp, struct obdo *oa,
76 struct ladvise_hdr *ladvise_hdr,
77 obd_enqueue_update_f upcall, void *cookie,
78 struct ptlrpc_request_set *rqset);
79 int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *cfg);
80 int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
81 struct list_head *ext_list, int cmd);
82 unsigned long osc_lru_reserve(struct client_obd *cli, unsigned long npages);
83 void osc_lru_unreserve(struct client_obd *cli, unsigned long npages);
85 extern struct lu_kmem_descr osc_caches[];
87 unsigned long osc_ldlm_weigh_ast(struct ldlm_lock *dlmlock);
89 int osc_cleanup(struct obd_device *obd);
90 int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
93 extern struct lprocfs_vars lprocfs_osc_obd_vars[];
94 int lproc_osc_attach_seqstat(struct obd_device *dev);
96 static inline int lproc_osc_attach_seqstat(struct obd_device *dev) {return 0;}
99 extern struct lu_device_type osc_device_type;
101 static inline struct cl_io *osc_env_thread_io(const struct lu_env *env)
103 struct cl_io *io = &osc_env_info(env)->oti_io;
105 memset(io, 0, sizeof(*io));
109 static inline int osc_is_object(const struct lu_object *obj)
111 return obj->lo_dev->ld_type == &osc_device_type;
114 static inline struct osc_lock *osc_lock_at(const struct cl_lock *lock)
116 return cl2osc_lock(cl_lock_at(lock, &osc_device_type));
119 int osc_lock_init(const struct lu_env *env, struct cl_object *obj,
120 struct cl_lock *lock, const struct cl_io *io);
121 int osc_io_init(const struct lu_env *env, struct cl_object *obj,
123 struct lu_object *osc_object_alloc(const struct lu_env *env,
124 const struct lu_object_header *hdr,
125 struct lu_device *dev);
127 static inline int osc_recoverable_error(int rc)
129 return (rc == -EIO || rc == -EROFS || rc == -ENOMEM ||
130 rc == -EAGAIN || rc == -EINPROGRESS);
133 static inline unsigned long rpcs_in_flight(struct client_obd *cli)
135 return cli->cl_r_in_flight + cli->cl_w_in_flight;
138 static inline char *cli_name(struct client_obd *cli)
140 return cli->cl_import->imp_obd->obd_name;
144 #define min_t(type,x,y) \
145 ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
148 struct osc_async_args {
149 struct obd_info *aa_oi;
152 int osc_quota_setup(struct obd_device *obd);
153 int osc_quota_cleanup(struct obd_device *obd);
154 int osc_quota_setdq(struct client_obd *cli, const unsigned int qid[],
155 u64 valid, u32 flags);
156 int osc_quota_chkdq(struct client_obd *cli, const unsigned int qid[]);
157 int osc_quotactl(struct obd_device *unused, struct obd_export *exp,
158 struct obd_quotactl *oqctl);
159 void osc_inc_unstable_pages(struct ptlrpc_request *req);
160 void osc_dec_unstable_pages(struct ptlrpc_request *req);
161 bool osc_over_unstable_soft_limit(struct client_obd *cli);
163 struct ldlm_lock *osc_obj_dlmlock_at_pgoff(const struct lu_env *env,
164 struct osc_object *obj,
166 enum osc_dap_flags flags);
168 int osc_object_invalidate(const struct lu_env *env, struct osc_object *osc);
170 /** osc shrink list to link all osc client obd */
171 extern struct list_head osc_shrink_list;
172 /** spin lock to protect osc_shrink_list */
173 extern spinlock_t osc_shrink_lock;
174 extern unsigned long osc_cache_shrink_count(struct shrinker *sk,
175 struct shrink_control *sc);
176 extern unsigned long osc_cache_shrink_scan(struct shrinker *sk,
177 struct shrink_control *sc);
179 static inline void osc_set_io_portal(struct ptlrpc_request *req)
181 struct obd_import *imp = req->rq_import;
183 /* Distinguish OSC from MDC here to use OST or MDS portal */
184 if (OCD_HAS_FLAG(&imp->imp_connect_data, IBITS))
185 req->rq_request_portal = MDS_IO_PORTAL;
187 req->rq_request_portal = OST_IO_PORTAL;
189 #endif /* OSC_INTERNAL_H */