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37 #ifndef _LMV_INTERNAL_H_
38 #define _LMV_INTERNAL_H_
40 #include <lustre/lustre_idl.h>
42 #include <lustre_lmv.h>
44 #define LMV_MAX_TGT_COUNT 128
46 #define LL_IT2STR(it) \
47 ((it) ? ldlm_it2str((it)->it_op) : "0")
49 int lmv_check_connect(struct obd_device *obd);
51 int lmv_intent_lock(struct obd_export *exp, struct md_op_data *op_data,
52 struct lookup_intent *it, struct ptlrpc_request **reqp,
53 ldlm_blocking_callback cb_blocking,
54 __u64 extra_lock_flags);
56 int lmv_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
58 int lmv_fld_lookup(struct lmv_obd *lmv, const struct lu_fid *fid, u32 *mds);
59 int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds);
60 int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp,
61 struct lu_fid *fid, struct md_op_data *op_data);
63 int lmv_revalidate_slaves(struct obd_export *exp,
64 const struct lmv_stripe_md *lsm,
65 ldlm_blocking_callback cb_blocking,
66 int extra_lock_flags);
68 static inline struct obd_device *lmv2obd_dev(struct lmv_obd *lmv)
70 return container_of0(lmv, struct obd_device, u.lmv);
73 static inline struct lmv_tgt_desc *
74 lmv_get_target(struct lmv_obd *lmv, u32 mdt_idx, int *index)
78 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
79 if (lmv->tgts[i] == NULL)
82 if (lmv->tgts[i]->ltd_idx == mdt_idx) {
89 return ERR_PTR(-ENODEV);
93 lmv_find_target_index(struct lmv_obd *lmv, const struct lu_fid *fid)
95 struct lmv_tgt_desc *ltd;
99 if (lmv->desc.ld_tgt_count > 1) {
101 rc = lmv_fld_lookup(lmv, fid, &mdt_idx);
106 ltd = lmv_get_target(lmv, mdt_idx, &index);
113 static inline struct lmv_tgt_desc *
114 lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid)
118 index = lmv_find_target_index(lmv, fid);
120 return ERR_PTR(index);
122 return lmv->tgts[index];
125 static inline int lmv_stripe_md_size(int stripe_count)
127 struct lmv_stripe_md *lsm;
129 return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]);
132 static inline const struct lmv_oinfo *
133 lsm_name_to_stripe_info(const struct lmv_stripe_md *lsm, const char *name,
138 stripe_index = lmv_name_to_stripe_index(lsm->lsm_md_hash_type,
139 lsm->lsm_md_stripe_count,
141 if (stripe_index < 0)
142 return ERR_PTR(stripe_index);
144 LASSERTF(stripe_index < lsm->lsm_md_stripe_count,
145 "stripe_index = %d, stripe_count = %d hash_type = %x"
146 "name = %.*s\n", stripe_index, lsm->lsm_md_stripe_count,
147 lsm->lsm_md_hash_type, namelen, name);
149 return &lsm->lsm_md_oinfo[stripe_index];
152 static inline bool lmv_need_try_all_stripes(const struct lmv_stripe_md *lsm)
154 return !lmv_is_known_hash_type(lsm->lsm_md_hash_type) ||
155 lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION;
159 *lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
162 #ifdef CONFIG_PROC_FS
163 extern struct lprocfs_vars lprocfs_lmv_obd_vars[];
165 extern struct file_operations lmv_proc_target_fops;