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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_unpack_md(struct obd_export *exp, struct lmv_stripe_md **lsmp,
64 const union lmv_mds_md *lmm, int stripe_count);
66 int lmv_revalidate_slaves(struct obd_export *exp, struct mdt_body *mbody,
67 struct lmv_stripe_md *lsm,
68 ldlm_blocking_callback cb_blocking,
69 int extra_lock_flags);
71 static inline struct obd_device *lmv2obd_dev(struct lmv_obd *lmv)
73 return container_of0(lmv, struct obd_device, u.lmv);
76 static inline struct lmv_tgt_desc *
77 lmv_get_target(struct lmv_obd *lmv, u32 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 static inline const struct lmv_oinfo *
136 lsm_name_to_stripe_info(const struct lmv_stripe_md *lsm, const char *name,
141 stripe_index = lmv_name_to_stripe_index(lsm->lsm_md_hash_type,
142 lsm->lsm_md_stripe_count,
144 if (stripe_index < 0)
145 return ERR_PTR(stripe_index);
147 LASSERTF(stripe_index < lsm->lsm_md_stripe_count,
148 "stripe_index = %d, stripe_count = %d hash_type = %x"
149 "name = %.*s\n", stripe_index, lsm->lsm_md_stripe_count,
150 lsm->lsm_md_hash_type, namelen, name);
152 return &lsm->lsm_md_oinfo[stripe_index];
155 static inline bool lmv_need_try_all_stripes(const struct lmv_stripe_md *lsm)
157 return !lmv_is_known_hash_type(lsm->lsm_md_hash_type) ||
158 lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION;
162 *lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
165 #ifdef CONFIG_PROC_FS
166 extern struct lprocfs_vars lprocfs_lmv_obd_vars[];
168 extern struct file_operations lmv_proc_target_fops;