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14 * in the LICENSE file that accompanied this code).
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26 * Copyright (c) 2011, 2015, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
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33 #ifndef _LMV_INTERNAL_H_
34 #define _LMV_INTERNAL_H_
36 #include "../include/lustre/lustre_idl.h"
37 #include "../include/obd.h"
38 #include "../include/lustre_lmv.h"
40 #define LMV_MAX_TGT_COUNT 128
42 #define LL_IT2STR(it) \
43 ((it) ? ldlm_it2str((it)->it_op) : "0")
45 int lmv_check_connect(struct obd_device *obd);
47 int lmv_intent_lock(struct obd_export *exp, struct md_op_data *op_data,
48 struct lookup_intent *it, struct ptlrpc_request **reqp,
49 ldlm_blocking_callback cb_blocking,
50 __u64 extra_lock_flags);
52 int lmv_fld_lookup(struct lmv_obd *lmv, const struct lu_fid *fid, u32 *mds);
53 int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds);
54 int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp,
55 struct lu_fid *fid, struct md_op_data *op_data);
57 int lmv_unpack_md(struct obd_export *exp, struct lmv_stripe_md **lsmp,
58 const union lmv_mds_md *lmm, int stripe_count);
60 int lmv_revalidate_slaves(struct obd_export *exp,
61 const struct lmv_stripe_md *lsm,
62 ldlm_blocking_callback cb_blocking,
63 int extra_lock_flags);
65 static inline struct obd_device *lmv2obd_dev(struct lmv_obd *lmv)
67 return container_of0(lmv, struct obd_device, u.lmv);
70 static inline struct lmv_tgt_desc *
71 lmv_get_target(struct lmv_obd *lmv, u32 mdt_idx, int *index)
75 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
79 if (lmv->tgts[i]->ltd_idx == mdt_idx) {
86 return ERR_PTR(-ENODEV);
90 lmv_find_target_index(struct lmv_obd *lmv, const struct lu_fid *fid)
92 struct lmv_tgt_desc *ltd;
96 if (lmv->desc.ld_tgt_count > 1) {
99 rc = lmv_fld_lookup(lmv, fid, &mdt_idx);
104 ltd = lmv_get_target(lmv, mdt_idx, &index);
111 static inline struct lmv_tgt_desc *
112 lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid)
116 index = lmv_find_target_index(lmv, fid);
118 return ERR_PTR(index);
120 return lmv->tgts[index];
123 static inline int lmv_stripe_md_size(int stripe_count)
125 struct lmv_stripe_md *lsm;
127 return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]);
130 int lmv_name_to_stripe_index(enum lmv_hash_type hashtype,
131 unsigned int max_mdt_index,
132 const char *name, int namelen);
134 static inline const struct lmv_oinfo *
135 lsm_name_to_stripe_info(const struct lmv_stripe_md *lsm, const char *name,
140 stripe_index = lmv_name_to_stripe_index(lsm->lsm_md_hash_type,
141 lsm->lsm_md_stripe_count,
143 if (stripe_index < 0)
144 return ERR_PTR(stripe_index);
146 LASSERTF(stripe_index < lsm->lsm_md_stripe_count,
147 "stripe_index = %d, stripe_count = %d hash_type = %x name = %.*s\n",
148 stripe_index, lsm->lsm_md_stripe_count,
149 lsm->lsm_md_hash_type, namelen, name);
151 return &lsm->lsm_md_oinfo[stripe_index];
154 static inline bool lmv_need_try_all_stripes(const struct lmv_stripe_md *lsm)
156 return !lmv_is_known_hash_type(lsm->lsm_md_hash_type) ||
157 lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION;
161 *lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
164 void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars);
166 extern const struct file_operations lmv_proc_target_fops;