1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2003 Cluster File Systems, Inc.
6 * This code is issued under the GNU General Public License.
7 * See the file COPYING in this distribution
10 #ifndef LOV_INTERNAL_H
11 #define LOV_INTERNAL_H
13 #include <lustre/lustre_user.h>
15 struct lov_lock_handles {
16 struct portals_handle llh_handle;
17 atomic_t llh_refcount;
19 struct lustre_handle llh_handles[0];
23 struct list_head rq_link;
24 struct ldlm_extent rq_extent;
25 int rq_idx; /* index in lov->tgts array */
26 int rq_stripe; /* stripe number */
29 int rq_buflen; /* length of sub_md */
31 struct lov_stripe_md *rq_md;
36 struct lov_request_set {
37 atomic_t set_refcount;
38 struct obd_export *set_exp;
42 struct llog_cookie *set_cookies;
44 struct lov_stripe_md *set_md;
46 struct obd_trans_info *set_oti;
48 struct brw_page *set_pga;
49 struct lov_lock_handles *set_lockh;
50 struct list_head set_list;
53 #define LAP_MAGIC 8200
55 struct lov_async_page {
58 obd_off lap_sub_offset;
61 struct obd_async_page_ops *lap_caller_ops;
62 void *lap_caller_data;
65 #define LAP_FROM_COOKIE(c) \
66 (LASSERT(((struct lov_async_page *)(c))->lap_magic == LAP_MAGIC), \
67 (struct lov_async_page *)(c))
69 static inline void lov_llh_addref(void *llhp)
71 struct lov_lock_handles *llh = llhp;
72 atomic_inc(&llh->llh_refcount);
73 CDEBUG(D_INFO, "GETting llh %p : new refcount %d\n", llh,
74 atomic_read(&llh->llh_refcount));
77 static inline struct lov_lock_handles *lov_llh_new(struct lov_stripe_md *lsm)
79 struct lov_lock_handles *llh;
81 OBD_ALLOC(llh, sizeof *llh +
82 sizeof(*llh->llh_handles) * lsm->lsm_stripe_count);
85 atomic_set(&llh->llh_refcount, 2);
86 llh->llh_stripe_count = lsm->lsm_stripe_count;
87 INIT_LIST_HEAD(&llh->llh_handle.h_link);
88 class_handle_hash(&llh->llh_handle, lov_llh_addref);
92 static inline struct lov_lock_handles *
93 lov_handle2llh(struct lustre_handle *handle)
95 LASSERT(handle != NULL);
96 return(class_handle2object(handle->cookie));
99 static inline void lov_llh_put(struct lov_lock_handles *llh)
101 CDEBUG(D_INFO, "PUTting llh %p : new refcount %d\n", llh,
102 atomic_read(&llh->llh_refcount) - 1);
103 LASSERT(atomic_read(&llh->llh_refcount) > 0 &&
104 atomic_read(&llh->llh_refcount) < 0x5a5a);
105 if (atomic_dec_and_test(&llh->llh_refcount)) {
106 class_handle_unhash(&llh->llh_handle);
107 LASSERT(list_empty(&llh->llh_handle.h_link));
108 OBD_FREE(llh, sizeof *llh +
109 sizeof(*llh->llh_handles) * llh->llh_stripe_count);
114 void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_flag valid,
115 struct lov_stripe_md *lsm, int stripeno, int *set);
118 obd_size lov_stripe_size(struct lov_stripe_md *lsm, obd_size ost_size,
120 int lov_stripe_offset(struct lov_stripe_md *lsm, obd_off lov_off,
121 int stripeno, obd_off *obd_off);
122 obd_off lov_size_to_stripe(struct lov_stripe_md *lsm, obd_off file_size,
124 int lov_stripe_intersects(struct lov_stripe_md *lsm, int stripeno,
125 obd_off start, obd_off end,
126 obd_off *obd_start, obd_off *obd_end);
127 int lov_stripe_number(struct lov_stripe_md *lsm, obd_off lov_off);
130 void qos_shrink_lsm(struct lov_request_set *set);
131 int qos_prep_create(struct lov_obd *lov, struct lov_request_set *set,
135 void lov_set_add_req(struct lov_request *req, struct lov_request_set *set);
136 int lov_update_common_set(struct lov_request_set *set,
137 struct lov_request *req, int rc);
138 int lov_prep_create_set(struct obd_export *exp, struct lov_stripe_md **ea,
139 struct obdo *src_oa, struct obd_trans_info *oti,
140 struct lov_request_set **reqset);
141 int lov_update_create_set(struct lov_request_set *set,
142 struct lov_request *req, int rc);
143 int lov_fini_create_set(struct lov_request_set *set, struct lov_stripe_md **ea);
144 int lov_prep_brw_set(struct obd_export *exp, struct obdo *src_oa,
145 struct lov_stripe_md *lsm, obd_count oa_bufs,
146 struct brw_page *pga, struct obd_trans_info *oti,
147 struct lov_request_set **reqset);
148 int lov_fini_brw_set(struct lov_request_set *set);
149 int lov_prep_getattr_set(struct obd_export *exp, struct obdo *src_oa,
150 struct lov_stripe_md *lsm,
151 struct lov_request_set **reqset);
152 int lov_fini_getattr_set(struct lov_request_set *set);
153 int lov_prep_destroy_set(struct obd_export *exp, struct obdo *src_oa,
154 struct lov_stripe_md *lsm,
155 struct obd_trans_info *oti,
156 struct lov_request_set **reqset);
157 int lov_update_destroy_set(struct lov_request_set *set,
158 struct lov_request *req, int rc);
159 int lov_fini_destroy_set(struct lov_request_set *set);
160 int lov_prep_setattr_set(struct obd_export *exp, struct obdo *src_oa,
161 struct lov_stripe_md *lsm, struct obd_trans_info *oti,
162 struct lov_request_set **reqset);
163 int lov_fini_setattr_set(struct lov_request_set *set);
164 int lov_prep_punch_set(struct obd_export *exp, struct obdo *src_oa,
165 struct lov_stripe_md *lsm, obd_off start,
166 obd_off end, struct obd_trans_info *oti,
167 struct lov_request_set **reqset);
168 int lov_update_punch_set(struct lov_request_set *set, struct lov_request *req,
170 int lov_fini_punch_set(struct lov_request_set *set);
171 int lov_prep_sync_set(struct obd_export *exp, struct obdo *src_oa,
172 struct lov_stripe_md *lsm, obd_off start,
173 obd_off end, struct lov_request_set **reqset);
174 int lov_fini_sync_set(struct lov_request_set *set);
175 int lov_prep_enqueue_set(struct obd_export *exp, struct lov_stripe_md *lsm,
176 ldlm_policy_data_t *policy, __u32 mode,
177 struct lustre_handle *lockh,
178 struct lov_request_set **reqset);
179 int lov_update_enqueue_set(struct lov_request_set *set,
180 struct lov_request *req, int rc, int flags);
181 int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode);
182 int lov_prep_match_set(struct obd_export *exp, struct lov_stripe_md *lsm,
183 ldlm_policy_data_t *policy, __u32 mode,
184 struct lustre_handle *lockh,
185 struct lov_request_set **reqset);
186 int lov_update_match_set(struct lov_request_set *set, struct lov_request *req,
188 int lov_fini_match_set(struct lov_request_set *set, __u32 mode, int flags);
189 int lov_prep_cancel_set(struct obd_export *exp, struct lov_stripe_md *lsm,
190 __u32 mode, struct lustre_handle *lockh,
191 struct lov_request_set **reqset);
192 int lov_fini_cancel_set(struct lov_request_set *set);
195 int lov_get_stripecnt(struct lov_obd *lov, int stripe_count);
196 int lov_alloc_memmd(struct lov_stripe_md **lsmp, int stripe_count, int pattern);
197 void lov_free_memmd(struct lov_stripe_md **lsmp);
200 int lov_llog_init(struct obd_device *obd, struct obd_device *tgt,
201 int count, struct llog_catid *logid);
202 int lov_llog_finish(struct obd_device *obd, int count);
205 int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmm,
206 struct lov_stripe_md *lsm);
207 int lov_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
208 struct lov_mds_md *lmm, int lmm_bytes);
209 int lov_setstripe(struct obd_export *exp,
210 struct lov_stripe_md **lsmp, struct lov_user_md *lump);
211 int lov_setea(struct obd_export *exp, struct lov_stripe_md **lsmp,
212 struct lov_user_md *lump);
213 int lov_getstripe(struct obd_export *exp,
214 struct lov_stripe_md *lsm, struct lov_user_md *lump);
217 extern struct file_operations lov_proc_target_fops;