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
17 * version 2 along with this program; If not, see
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, 2015, 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 extern atomic_t osc_pool_req_count
;
39 extern unsigned int osc_reqpool_maxreqcount
;
40 extern struct ptlrpc_request_pool
*osc_rq_pool
;
45 ASYNC_READY
= 0x1, /* ap_make_ready will not be called before this
46 * page is added to an rpc
48 ASYNC_URGENT
= 0x2, /* page must be put into an RPC before return */
49 ASYNC_COUNT_STABLE
= 0x4, /* ap_refresh_count will not be called
50 * to give the caller a chance to update
51 * or cancel the size of the io
56 struct osc_async_page
{
58 unsigned short oap_cmd
;
59 unsigned short oap_interrupted
:1;
61 struct list_head oap_pending_item
;
62 struct list_head oap_rpc_item
;
65 unsigned oap_page_off
;
66 enum async_flags oap_async_flags
;
68 struct brw_page oap_brw_page
;
70 struct ptlrpc_request
*oap_request
;
71 struct client_obd
*oap_cli
;
72 struct osc_object
*oap_obj
;
74 struct ldlm_lock
*oap_ldlm_lock
;
78 #define oap_page oap_brw_page.pg
79 #define oap_count oap_brw_page.count
80 #define oap_brw_flags oap_brw_page.flag
82 static inline struct osc_async_page
*brw_page2oap(struct brw_page
*pga
)
84 return (struct osc_async_page
*)container_of(pga
, struct osc_async_page
,
88 struct osc_cache_waiter
{
89 struct list_head ocw_entry
;
90 wait_queue_head_t ocw_waitq
;
91 struct osc_async_page
*ocw_oap
;
96 void osc_wake_cache_waiters(struct client_obd
*cli
);
97 int osc_shrink_grant_to_target(struct client_obd
*cli
, __u64 target_bytes
);
98 void osc_update_next_shrink(struct client_obd
*cli
);
103 #include "../include/cl_object.h"
105 extern struct ptlrpc_request_set
*PTLRPCD_SET
;
107 typedef int (*osc_enqueue_upcall_f
)(void *cookie
, struct lustre_handle
*lockh
,
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 osc_enqueue_upcall_f upcall
,
114 void *cookie
, struct ldlm_enqueue_info
*einfo
,
115 struct ptlrpc_request_set
*rqset
, int async
, int agl
);
116 int osc_cancel_base(struct lustre_handle
*lockh
, __u32 mode
);
118 int osc_match_base(struct obd_export
*exp
, struct ldlm_res_id
*res_id
,
119 __u32 type
, ldlm_policy_data_t
*policy
, __u32 mode
,
120 __u64
*flags
, void *data
, struct lustre_handle
*lockh
,
123 int osc_setattr_async_base(struct obd_export
*exp
, struct obd_info
*oinfo
,
124 struct obd_trans_info
*oti
,
125 obd_enqueue_update_f upcall
, void *cookie
,
126 struct ptlrpc_request_set
*rqset
);
127 int osc_punch_base(struct obd_export
*exp
, struct obd_info
*oinfo
,
128 obd_enqueue_update_f upcall
, void *cookie
,
129 struct ptlrpc_request_set
*rqset
);
130 int osc_sync_base(struct obd_export
*exp
, struct obd_info
*oinfo
,
131 obd_enqueue_update_f upcall
, void *cookie
,
132 struct ptlrpc_request_set
*rqset
);
134 int osc_process_config_base(struct obd_device
*obd
, struct lustre_cfg
*cfg
);
135 int osc_build_rpc(const struct lu_env
*env
, struct client_obd
*cli
,
136 struct list_head
*ext_list
, int cmd
);
137 int osc_lru_shrink(const struct lu_env
*env
, struct client_obd
*cli
,
138 int target
, bool force
);
139 int osc_lru_reclaim(struct client_obd
*cli
);
141 unsigned long osc_ldlm_weigh_ast(struct ldlm_lock
*dlmlock
);
143 int osc_setup(struct obd_device
*obd
, struct lustre_cfg
*lcfg
);
145 int lproc_osc_attach_seqstat(struct obd_device
*dev
);
146 void lprocfs_osc_init_vars(struct lprocfs_static_vars
*lvars
);
148 extern struct lu_device_type osc_device_type
;
150 static inline int osc_recoverable_error(int rc
)
152 return (rc
== -EIO
|| rc
== -EROFS
|| rc
== -ENOMEM
||
153 rc
== -EAGAIN
|| rc
== -EINPROGRESS
);
156 static inline unsigned long rpcs_in_flight(struct client_obd
*cli
)
158 return cli
->cl_r_in_flight
+ cli
->cl_w_in_flight
;
162 struct cl_device od_cl
;
163 struct obd_export
*od_exp
;
165 /* Write stats is actually protected by client_obd's lock. */
167 uint64_t os_lockless_writes
; /* by bytes */
168 uint64_t os_lockless_reads
; /* by bytes */
169 uint64_t os_lockless_truncates
; /* by times */
172 /* configuration item(s) */
173 int od_contention_time
;
174 int od_lockless_truncate
;
177 static inline struct osc_device
*obd2osc_dev(const struct obd_device
*d
)
179 return container_of0(d
->obd_lu_dev
, struct osc_device
, od_cl
.cd_lu_dev
);
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
;
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 void osc_inc_unstable_pages(struct ptlrpc_request
*req
);
200 void osc_dec_unstable_pages(struct ptlrpc_request
*req
);
201 int osc_over_unstable_soft_limit(struct client_obd
*cli
);
203 struct ldlm_lock
*osc_dlmlock_at_pgoff(const struct lu_env
*env
,
204 struct osc_object
*obj
, pgoff_t index
,
205 int pending
, int canceling
);
207 #endif /* OSC_INTERNAL_H */