1 /* -*- MODE: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * Copyright (C) 2006 Cluster File Systems, Inc.
7 * Author: Yury Umanets <umka@clusterfs.com>
8 * Tom WangDi <wangdi@clusterfs.com>
10 * This file is part of the Lustre file system, http://www.lustre.org
11 * Lustre is a trademark of Cluster File Systems, Inc.
13 * You may have signed or agreed to another license before downloading
14 * this software. If so, you are bound by the terms and conditions
15 * of that agreement, and the following does not apply to you. See the
16 * LICENSE file included with this distribution for more information.
18 * If you did not agree to a different license, then this copy of Lustre
19 * is open source software; you can redistribute it and/or modify it
20 * under the terms of version 2 of the GNU General Public License as
21 * published by the Free Software Foundation.
23 * In either case, Lustre is distributed in the hope that it will be
24 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
25 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * license text for more details.
28 #ifndef __FLD_INTERNAL_H
29 #define __FLD_INTERNAL_H
31 #include <lustre/lustre_idl.h>
32 #include <dt_object.h>
34 #include <libcfs/list.h>
35 #include <libcfs/kp30.h>
37 #include <linux/types.h>
38 #include <lustre_req_layout.h>
39 #include <lustre_fld.h>
48 /* 4M of FLD cache will not hurt client a lot. */
49 FLD_SERVER_CACHE_SIZE = (4 * 0x100000),
51 /* 1M of FLD cache will not hurt client a lot. */
52 FLD_CLIENT_CACHE_SIZE = (1 * 0x100000)
56 /* Cache threshold is 10 percent of size. */
57 FLD_SERVER_CACHE_THRESHOLD = 10,
59 /* Cache threshold is 10 percent of size. */
60 FLD_CLIENT_CACHE_THRESHOLD = 10
65 * One page is used for hashtable. That is sizeof(struct hlist_head) *
68 FLD_CLIENT_HTABLE_SIZE = (1024 * 1),
71 * Here 4 pages are used for hashtable of server cache. This is is
72 * because cache it self is 4 times bugger.
74 FLD_SERVER_HTABLE_SIZE = (1024 * 4)
77 extern struct lu_fld_hash fld_hash[];
80 struct fld_thread_info {
81 struct req_capsule *fti_pill;
87 int fld_index_init(struct lu_server_fld *fld,
88 const struct lu_env *env,
89 struct dt_device *dt);
91 void fld_index_fini(struct lu_server_fld *fld,
92 const struct lu_env *env);
94 int fld_index_create(struct lu_server_fld *fld,
95 const struct lu_env *env,
96 seqno_t seq, mdsno_t mds);
98 int fld_index_delete(struct lu_server_fld *fld,
99 const struct lu_env *env,
102 int fld_index_lookup(struct lu_server_fld *fld,
103 const struct lu_env *env,
104 seqno_t seq, mdsno_t *mds);
107 extern struct lprocfs_vars fld_server_proc_list[];
108 extern struct lprocfs_vars fld_client_proc_list[];
113 static inline const char *
114 fld_target_name(struct lu_fld_target *tar)
116 if (tar->ft_srv != NULL)
117 return tar->ft_srv->lsf_name;
119 return (const char *)tar->ft_exp->exp_obd->obd_name;
122 extern cfs_proc_dir_entry_t *fld_type_proc_dir;
124 #endif /* __FLD_INTERNAL_H */