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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 void *lmm, int lmmsize, struct lookup_intent *it,
56 int flags, struct ptlrpc_request **reqp,
57 ldlm_blocking_callback cb_blocking,
58 __u64 extra_lock_flags);
60 int lmv_intent_lookup(struct obd_export *exp, struct md_op_data *op_data,
61 void *lmm, int lmmsize, struct lookup_intent *it,
62 int flags, struct ptlrpc_request **reqp,
63 ldlm_blocking_callback cb_blocking,
64 __u64 extra_lock_flags);
66 int lmv_intent_open(struct obd_export *exp, struct md_op_data *op_data,
67 void *lmm, int lmmsize, struct lookup_intent *it,
68 int flags, struct ptlrpc_request **reqp,
69 ldlm_blocking_callback cb_blocking,
70 __u64 extra_lock_flags);
72 int lmv_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
74 int lmv_fld_lookup(struct lmv_obd *lmv, const struct lu_fid *fid,
76 int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid,
78 int lmv_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
79 struct md_op_data *op_data);
81 static inline struct lmv_tgt_desc *
82 lmv_get_target(struct lmv_obd *lmv, mdsno_t mds)
84 int count = lmv->desc.ld_tgt_count;
87 for (i = 0; i < count; i++) {
88 if (lmv->tgts[i] == NULL)
91 if (lmv->tgts[i]->ltd_idx == mds)
95 return ERR_PTR(-ENODEV);
98 static inline struct lmv_tgt_desc *
99 lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid)
104 if (lmv->desc.ld_tgt_count > 1) {
105 rc = lmv_fld_lookup(lmv, fid, &mds);
110 return lmv_get_target(lmv, mds);
113 static inline unsigned int
114 mea_last_char_hash(unsigned int count, const char *name, int namelen)
118 c = name[namelen - 1];
120 CWARN("invalid name %.*s\n", namelen, name);
127 static inline unsigned int
128 mea_all_chars_hash(unsigned int count, const char *name, int namelen)
132 while (--namelen >= 0)
140 static inline int lmv_stripe_md_size(int stripe_count)
142 struct lmv_stripe_md *lsm;
144 return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]);
147 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
150 *lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
154 extern struct lprocfs_seq_vars lprocfs_lmv_obd_vars[];
156 extern struct file_operations lmv_proc_target_fops;