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 #define LOV_MAX_TGT_COUNT 1024
57 static inline int lov_tgt_changed(struct lov_obd *lov, struct lov_oinfo *loi)
59 return lov->tgts[loi->loi_ost_idx].ltd_gen != loi->loi_ost_gen;
62 struct lov_async_page {
65 obd_off lap_sub_offset;
67 struct obd_async_page_ops *lap_caller_ops;
68 void *lap_caller_data;
72 #define LAP_FROM_COOKIE(c) \
73 (LASSERT(((struct lov_async_page *)(c))->lap_magic == LAP_MAGIC), \
74 (struct lov_async_page *)(c))
76 static inline void lov_llh_addref(void *llhp)
78 struct lov_lock_handles *llh = llhp;
79 atomic_inc(&llh->llh_refcount);
80 CDEBUG(D_INFO, "GETting llh %p : new refcount %d\n", llh,
81 atomic_read(&llh->llh_refcount));
84 static inline struct lov_lock_handles *lov_llh_new(struct lov_stripe_md *lsm)
86 struct lov_lock_handles *llh;
88 OBD_ALLOC(llh, sizeof *llh +
89 sizeof(*llh->llh_handles) * lsm->lsm_stripe_count);
92 atomic_set(&llh->llh_refcount, 2);
93 llh->llh_stripe_count = lsm->lsm_stripe_count;
94 INIT_LIST_HEAD(&llh->llh_handle.h_link);
95 class_handle_hash(&llh->llh_handle, lov_llh_addref);
99 static inline struct lov_lock_handles *
100 lov_handle2llh(struct lustre_handle *handle)
102 LASSERT(handle != NULL);
103 return(class_handle2object(handle->cookie));
106 static inline void lov_llh_put(struct lov_lock_handles *llh)
108 CDEBUG(D_INFO, "PUTting llh %p : new refcount %d\n", llh,
109 atomic_read(&llh->llh_refcount) - 1);
110 LASSERT(atomic_read(&llh->llh_refcount) > 0 &&
111 atomic_read(&llh->llh_refcount) < 0x5a5a);
112 if (atomic_dec_and_test(&llh->llh_refcount)) {
113 class_handle_unhash(&llh->llh_handle);
114 LASSERT(list_empty(&llh->llh_handle.h_link));
115 OBD_FREE(llh, sizeof *llh +
116 sizeof(*llh->llh_handles) * llh->llh_stripe_count);
121 void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_flags valid,
122 struct lov_stripe_md *lsm, int stripeno, int *set);
124 int lov_adjust_kms(struct obd_export *exp, struct lov_stripe_md *lsm,
125 obd_off size, int shrink);
127 obd_size lov_stripe_size(struct lov_stripe_md *lsm, obd_size ost_size,
129 int lov_stripe_offset(struct lov_stripe_md *lsm, obd_off lov_off,
130 int stripeno, obd_off *obd_off);
131 obd_off lov_size_to_stripe(struct lov_stripe_md *lsm, obd_off file_size,
133 int lov_stripe_intersects(struct lov_stripe_md *lsm, int stripeno,
134 obd_off start, obd_off end,
135 obd_off *obd_start, obd_off *obd_end);
136 int lov_stripe_number(struct lov_stripe_md *lsm, obd_off lov_off);
139 void qos_shrink_lsm(struct lov_request_set *set);
140 int qos_prep_create(struct lov_obd *lov, struct lov_request_set *set,
144 void lov_set_add_req(struct lov_request *req, struct lov_request_set *set);
145 int lov_update_common_set(struct lov_request_set *set,
146 struct lov_request *req, int rc);
147 int lov_prep_create_set(struct obd_export *exp, struct lov_stripe_md **ea,
148 struct obdo *src_oa, struct obd_trans_info *oti,
149 struct lov_request_set **reqset);
150 int lov_update_create_set(struct lov_request_set *set,
151 struct lov_request *req, int rc);
152 int lov_fini_create_set(struct lov_request_set *set, struct lov_stripe_md **ea);
153 int lov_prep_brw_set(struct obd_export *exp, struct obdo *src_oa,
154 struct lov_stripe_md *lsm, obd_count oa_bufs,
155 struct brw_page *pga, struct obd_trans_info *oti,
156 struct lov_request_set **reqset);
157 int lov_fini_brw_set(struct lov_request_set *set);
158 int lov_prep_getattr_set(struct obd_export *exp, struct obdo *src_oa,
159 struct lov_stripe_md *lsm,
160 struct lov_request_set **reqset);
161 int lov_fini_getattr_set(struct lov_request_set *set);
162 int lov_prep_destroy_set(struct obd_export *exp, struct obdo *src_oa,
163 struct lov_stripe_md *lsm,
164 struct obd_trans_info *oti,
165 struct lov_request_set **reqset);
166 int lov_update_destroy_set(struct lov_request_set *set,
167 struct lov_request *req, int rc);
168 int lov_fini_destroy_set(struct lov_request_set *set);
169 int lov_prep_setattr_set(struct obd_export *exp, struct obdo *src_oa,
170 struct lov_stripe_md *lsm, struct obd_trans_info *oti,
171 struct lov_request_set **reqset);
172 int lov_fini_setattr_set(struct lov_request_set *set);
173 int lov_prep_punch_set(struct obd_export *exp, struct obdo *src_oa,
174 struct lov_stripe_md *lsm, obd_off start,
175 obd_off end, struct obd_trans_info *oti,
176 struct lov_request_set **reqset);
177 int lov_update_punch_set(struct lov_request_set *set, struct lov_request *req,
179 int lov_fini_punch_set(struct lov_request_set *set);
180 int lov_prep_sync_set(struct obd_export *exp, struct obdo *src_oa,
181 struct lov_stripe_md *lsm, obd_off start,
182 obd_off end, struct lov_request_set **reqset);
183 int lov_fini_sync_set(struct lov_request_set *set);
184 int lov_prep_enqueue_set(struct obd_export *exp, struct lov_stripe_md *lsm,
185 ldlm_policy_data_t *policy, __u32 mode,
186 struct lustre_handle *lockh,
187 struct lov_request_set **reqset);
188 int lov_update_enqueue_set(struct lov_request_set *set,
189 struct lov_request *req, int rc, int flags);
190 int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode);
191 int lov_prep_match_set(struct obd_export *exp, struct lov_stripe_md *lsm,
192 ldlm_policy_data_t *policy, __u32 mode,
193 struct lustre_handle *lockh,
194 struct lov_request_set **reqset);
195 int lov_update_match_set(struct lov_request_set *set, struct lov_request *req,
197 int lov_fini_match_set(struct lov_request_set *set, __u32 mode, int flags);
198 int lov_prep_cancel_set(struct obd_export *exp, struct lov_stripe_md *lsm,
199 __u32 mode, struct lustre_handle *lockh,
200 struct lov_request_set **reqset);
201 int lov_fini_cancel_set(struct lov_request_set *set);
204 int lov_get_stripecnt(struct lov_obd *lov, int stripe_count);
205 int lov_alloc_memmd(struct lov_stripe_md **lsmp, int stripe_count, int pattern);
206 void lov_free_memmd(struct lov_stripe_md **lsmp);
209 int lov_llog_init(struct obd_device *, struct obd_llogs *,
210 struct obd_device *, int, struct llog_catid *);
211 int lov_llog_finish(struct obd_device *, struct obd_llogs *, int);
214 int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmm,
215 struct lov_stripe_md *lsm);
216 int lov_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
217 struct lov_mds_md *lmm, int lmm_bytes);
218 int lov_setstripe(struct obd_export *exp,
219 struct lov_stripe_md **lsmp, struct lov_user_md *lump);
220 int lov_setea(struct obd_export *exp, struct lov_stripe_md **lsmp,
221 struct lov_user_md *lump);
222 int lov_getstripe(struct obd_export *exp,
223 struct lov_stripe_md *lsm, struct lov_user_md *lump);
226 extern struct file_operations lov_proc_target_fops;