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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 lmv_init_lock(lmv) mutex_lock(&lmv->init_mutex);
47 #define lmv_init_unlock(lmv) mutex_unlock(&lmv->init_mutex);
49 #define LL_IT2STR(it) \
50 ((it) ? ldlm_it2str((it)->it_op) : "0")
52 int lmv_check_connect(struct obd_device *obd);
54 int lmv_intent_lock(struct obd_export *exp, struct md_op_data *op_data,
55 struct lookup_intent *it, struct ptlrpc_request **reqp,
56 ldlm_blocking_callback cb_blocking,
57 __u64 extra_lock_flags);
59 int lmv_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
61 int lmv_fld_lookup(struct lmv_obd *lmv, const struct lu_fid *fid,
63 int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid,
65 int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp,
66 struct lu_fid *fid, struct md_op_data *op_data);
68 int lmv_unpack_md(struct obd_export *exp, struct lmv_stripe_md **lsmp,
69 const union lmv_mds_md *lmm, int stripe_count);
71 int lmv_revalidate_slaves(struct obd_export *exp, struct mdt_body *mbody,
72 struct lmv_stripe_md *lsm,
73 ldlm_blocking_callback cb_blocking,
74 int extra_lock_flags);
76 static inline struct lmv_tgt_desc *
77 lmv_get_target(struct lmv_obd *lmv, mdsno_t mdt_idx, int *index)
81 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
82 if (lmv->tgts[i] == NULL)
85 if (lmv->tgts[i]->ltd_idx == mdt_idx) {
92 return ERR_PTR(-ENODEV);
96 lmv_find_target_index(struct lmv_obd *lmv, const struct lu_fid *fid)
98 struct lmv_tgt_desc *ltd;
102 if (lmv->desc.ld_tgt_count > 1) {
104 rc = lmv_fld_lookup(lmv, fid, &mdt_idx);
109 ltd = lmv_get_target(lmv, mdt_idx, &index);
116 static inline struct lmv_tgt_desc *
117 lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid)
121 index = lmv_find_target_index(lmv, fid);
123 return ERR_PTR(index);
125 return lmv->tgts[index];
128 static inline int lmv_stripe_md_size(int stripe_count)
130 struct lmv_stripe_md *lsm;
132 return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]);
135 int lmv_name_to_stripe_index(enum lmv_hash_type hashtype,
136 unsigned int max_mdt_index,
137 const char *name, int namelen);
139 static inline const struct lmv_oinfo *
140 lsm_name_to_stripe_info(const struct lmv_stripe_md *lsm, const char *name,
145 stripe_index = lmv_name_to_stripe_index(lsm->lsm_md_hash_type,
146 lsm->lsm_md_stripe_count,
148 if (stripe_index < 0)
149 return ERR_PTR(stripe_index);
151 LASSERTF(stripe_index < lsm->lsm_md_stripe_count,
152 "stripe_index = %d, stripe_count = %d hash_type = %x"
153 "name = %.*s\n", stripe_index, lsm->lsm_md_stripe_count,
154 lsm->lsm_md_hash_type, namelen, name);
156 return &lsm->lsm_md_oinfo[stripe_index];
159 static inline bool lmv_is_known_hash_type(const struct lmv_stripe_md *lsm)
161 return lsm->lsm_md_hash_type == LMV_HASH_TYPE_FNV_1A_64 ||
162 lsm->lsm_md_hash_type == LMV_HASH_TYPE_ALL_CHARS;
165 static inline bool lmv_need_try_all_stripes(const struct lmv_stripe_md *lsm)
167 return !lmv_is_known_hash_type(lsm) ||
168 lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION;
172 *lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
176 extern struct lprocfs_seq_vars lprocfs_lmv_obd_vars[];
178 extern struct file_operations lmv_proc_target_fops;