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 obd_info rq_oi;
24 struct lov_request_set *rq_rqset;
26 struct list_head rq_link;
28 int rq_idx; /* index in lov->tgts array */
29 int rq_stripe; /* stripe number */
32 int rq_buflen; /* length of sub_md */
38 struct lov_request_set {
39 struct obd_enqueue_info *set_ei;
40 struct obd_info *set_oi;
41 atomic_t set_refcount;
42 struct obd_export *set_exp;
43 /* XXX: There is @set_exp already, however obd_statfs gets obd_device
45 struct obd_device *set_obd;
49 struct llog_cookie *set_cookies;
51 struct obd_trans_info *set_oti;
53 struct brw_page *set_pga;
54 struct lov_lock_handles *set_lockh;
55 struct list_head set_list;
58 #define LOV_AP_MAGIC 8200
60 struct lov_async_page {
63 obd_off lap_sub_offset;
67 struct obd_async_page_ops *lap_caller_ops;
68 void *lap_caller_data;
71 #define LAP_FROM_COOKIE(c) \
72 (LASSERT(((struct lov_async_page *)(c))->lap_magic == LOV_AP_MAGIC), \
73 (struct lov_async_page *)(c))
75 extern cfs_mem_cache_t *lov_oinfo_slab;
77 static inline void lov_llh_addref(void *llhp)
79 struct lov_lock_handles *llh = llhp;
80 atomic_inc(&llh->llh_refcount);
81 CDEBUG(D_INFO, "GETting llh %p : new refcount %d\n", llh,
82 atomic_read(&llh->llh_refcount));
85 static inline struct lov_lock_handles *lov_llh_new(struct lov_stripe_md *lsm)
87 struct lov_lock_handles *llh;
89 OBD_ALLOC(llh, sizeof *llh +
90 sizeof(*llh->llh_handles) * lsm->lsm_stripe_count);
93 atomic_set(&llh->llh_refcount, 2);
94 llh->llh_stripe_count = lsm->lsm_stripe_count;
95 CFS_INIT_LIST_HEAD(&llh->llh_handle.h_link);
96 class_handle_hash(&llh->llh_handle, lov_llh_addref);
100 static inline struct lov_lock_handles *
101 lov_handle2llh(struct lustre_handle *handle)
103 LASSERT(handle != NULL);
104 return(class_handle2object(handle->cookie));
107 static inline void lov_llh_put(struct lov_lock_handles *llh)
109 CDEBUG(D_INFO, "PUTting llh %p : new refcount %d\n", llh,
110 atomic_read(&llh->llh_refcount) - 1);
111 LASSERT(atomic_read(&llh->llh_refcount) > 0 &&
112 atomic_read(&llh->llh_refcount) < 0x5a5a);
113 if (atomic_dec_and_test(&llh->llh_refcount)) {
114 class_handle_unhash(&llh->llh_handle);
115 /* The structure may be held by other threads because RCU.
117 if (atomic_read(&llh->llh_refcount))
120 OBD_FREE_RCU(llh, sizeof *llh +
121 sizeof(*llh->llh_handles) * llh->llh_stripe_count,
126 #define lov_uuid2str(lv, index) \
127 (char *)((lv)->lov_tgts[index]->ltd_uuid.uuid)
130 void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_flag valid,
131 struct lov_stripe_md *lsm, int stripeno, int *set);
132 int lov_merge_lvb(struct obd_export *exp, struct lov_stripe_md *lsm,
133 struct ost_lvb *lvb, int kms_only);
134 int lov_adjust_kms(struct obd_export *exp, struct lov_stripe_md *lsm,
135 obd_off size, int shrink);
138 obd_size lov_stripe_size(struct lov_stripe_md *lsm, obd_size ost_size,
140 int lov_stripe_offset(struct lov_stripe_md *lsm, obd_off lov_off,
141 int stripeno, obd_off *obd_off);
142 obd_off lov_size_to_stripe(struct lov_stripe_md *lsm, obd_off file_size,
144 int lov_stripe_intersects(struct lov_stripe_md *lsm, int stripeno,
145 obd_off start, obd_off end,
146 obd_off *obd_start, obd_off *obd_end);
147 int lov_stripe_number(struct lov_stripe_md *lsm, obd_off lov_off);
150 int qos_add_tgt(struct obd_device *obd, __u32 index);
151 int qos_del_tgt(struct obd_device *obd, __u32 index);
152 void qos_shrink_lsm(struct lov_request_set *set);
153 int qos_prep_create(struct obd_export *exp, struct lov_request_set *set);
154 void qos_update(struct lov_obd *lov);
155 int qos_remedy_create(struct lov_request_set *set, struct lov_request *req);
158 void lov_set_add_req(struct lov_request *req, struct lov_request_set *set);
159 void lov_update_set(struct lov_request_set *set,
160 struct lov_request *req, int rc);
161 int lov_update_common_set(struct lov_request_set *set,
162 struct lov_request *req, int rc);
163 int lov_prep_create_set(struct obd_export *exp, struct obd_info *oifo,
164 struct lov_stripe_md **ea, struct obdo *src_oa,
165 struct obd_trans_info *oti,
166 struct lov_request_set **reqset);
167 int lov_update_create_set(struct lov_request_set *set,
168 struct lov_request *req, int rc);
169 int lov_fini_create_set(struct lov_request_set *set, struct lov_stripe_md **ea);
170 int lov_prep_brw_set(struct obd_export *exp, struct obd_info *oinfo,
171 obd_count oa_bufs, struct brw_page *pga,
172 struct obd_trans_info *oti,
173 struct lov_request_set **reqset);
174 int lov_fini_brw_set(struct lov_request_set *set);
175 int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
176 struct lov_request_set **reqset);
177 int lov_fini_getattr_set(struct lov_request_set *set);
178 int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
179 struct obdo *src_oa, struct lov_stripe_md *lsm,
180 struct obd_trans_info *oti,
181 struct lov_request_set **reqset);
182 int lov_update_destroy_set(struct lov_request_set *set,
183 struct lov_request *req, int rc);
184 int lov_fini_destroy_set(struct lov_request_set *set);
185 int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
186 struct obd_trans_info *oti,
187 struct lov_request_set **reqset);
188 int lov_update_setattr_set(struct lov_request_set *set,
189 struct lov_request *req, int rc);
190 int lov_fini_setattr_set(struct lov_request_set *set);
191 int lov_prep_punch_set(struct obd_export *exp, struct obd_info *oinfo,
192 struct obd_trans_info *oti,
193 struct lov_request_set **reqset);
194 int lov_fini_punch_set(struct lov_request_set *set);
195 int lov_prep_sync_set(struct obd_export *exp, struct obd_info *obd_info,
197 struct lov_stripe_md *lsm, obd_off start,
198 obd_off end, struct lov_request_set **reqset);
199 int lov_fini_sync_set(struct lov_request_set *set);
200 int lov_prep_enqueue_set(struct obd_export *exp, struct obd_info *oinfo,
201 struct obd_enqueue_info *einfo,
202 struct lov_request_set **reqset);
203 int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode, int rc);
204 int lov_prep_match_set(struct obd_export *exp, struct obd_info *oinfo,
205 struct lov_stripe_md *lsm,
206 ldlm_policy_data_t *policy, __u32 mode,
207 struct lustre_handle *lockh,
208 struct lov_request_set **reqset);
209 int lov_update_match_set(struct lov_request_set *set, struct lov_request *req,
211 int lov_fini_match_set(struct lov_request_set *set, __u32 mode, int flags);
212 int lov_prep_cancel_set(struct obd_export *exp, struct obd_info *oinfo,
213 struct lov_stripe_md *lsm,
214 __u32 mode, struct lustre_handle *lockh,
215 struct lov_request_set **reqset);
216 int lov_fini_cancel_set(struct lov_request_set *set);
217 int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
218 struct lov_request_set **reqset);
219 void lov_update_statfs(struct obd_device *obd, struct obd_statfs *osfs,
220 struct obd_statfs *lov_sfs, int success);
221 int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,
223 int lov_fini_statfs_set(struct lov_request_set *set);
226 void lov_fix_desc(struct lov_desc *desc);
227 int lov_get_stripecnt(struct lov_obd *lov, int stripe_count);
228 void lov_getref(struct obd_device *obd);
229 void lov_putref(struct obd_device *obd);
232 int lov_llog_init(struct obd_device *obd, struct obd_llogs *llogs,
233 struct obd_device *tgt, int count, struct llog_catid *logid,
234 struct obd_uuid *uuid);
235 int lov_llog_finish(struct obd_device *obd, int count);
238 int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmm,
239 struct lov_stripe_md *lsm);
240 int lov_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
241 struct lov_mds_md *lmm, int lmm_bytes);
242 int lov_setstripe(struct obd_export *exp,
243 struct lov_stripe_md **lsmp, struct lov_user_md *lump);
244 int lov_setea(struct obd_export *exp, struct lov_stripe_md **lsmp,
245 struct lov_user_md *lump);
246 int lov_getstripe(struct obd_export *exp,
247 struct lov_stripe_md *lsm, struct lov_user_md *lump);
248 int lov_alloc_memmd(struct lov_stripe_md **lsmp, int stripe_count,
249 int pattern, int magic);
250 void lov_free_memmd(struct lov_stripe_md **lsmp);
252 void lov_dump_lmm_v1(int level, struct lov_mds_md_v1 *lmm);
253 void lov_dump_lmm_join(int level, struct lov_mds_md_join *lmmj);
255 int lov_unpackmd_join(struct lov_obd *lov, struct lov_stripe_md *lsm,
256 struct lov_mds_md *lmm);
257 struct lov_stripe_md *lsm_alloc_plain(int stripe_count, int *size);
258 void lsm_free_plain(struct lov_stripe_md *lsm);
260 struct lov_extent *lovea_idx2le(struct lov_stripe_md *lsm, int stripe_no);
261 struct lov_extent *lovea_off2le(struct lov_stripe_md *lsm, obd_off lov_off);
262 int lovea_destroy_object(struct lov_obd *lov, struct lov_stripe_md *lsm,
263 struct obdo *oa, void *data);
265 extern struct file_operations lov_proc_target_fops;