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37 #ifndef _LMV_INTERNAL_H_
38 #define _LMV_INTERNAL_H_
40 #include "../include/lustre/lustre_idl.h"
41 #include "../include/obd.h"
43 #define LMV_MAX_TGT_COUNT 128
45 #define lmv_init_lock(lmv) mutex_lock(&lmv->init_mutex)
46 #define lmv_init_unlock(lmv) mutex_unlock(&lmv->init_mutex)
48 #define LL_IT2STR(it) \
49 ((it) ? ldlm_it2str((it)->it_op) : "0")
51 int lmv_check_connect(struct obd_device *obd);
53 int lmv_intent_lock(struct obd_export *exp, struct md_op_data *op_data,
54 void *lmm, int lmmsize, struct lookup_intent *it,
55 int flags, struct ptlrpc_request **reqp,
56 ldlm_blocking_callback cb_blocking,
57 __u64 extra_lock_flags);
59 int lmv_intent_lookup(struct obd_export *exp, struct md_op_data *op_data,
60 void *lmm, int lmmsize, struct lookup_intent *it,
61 int flags, struct ptlrpc_request **reqp,
62 ldlm_blocking_callback cb_blocking,
63 __u64 extra_lock_flags);
65 int lmv_intent_open(struct obd_export *exp, struct md_op_data *op_data,
66 void *lmm, int lmmsize, struct lookup_intent *it,
67 int flags, struct ptlrpc_request **reqp,
68 ldlm_blocking_callback cb_blocking,
69 __u64 extra_lock_flags);
71 int lmv_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
73 int lmv_fld_lookup(struct lmv_obd *lmv, const struct lu_fid *fid, u32 *mds);
74 int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds);
75 int lmv_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
76 struct md_op_data *op_data);
78 static inline struct lmv_stripe_md *lmv_get_mea(struct ptlrpc_request *req)
80 struct mdt_body *body;
81 struct lmv_stripe_md *mea;
85 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
87 if (!body || !S_ISDIR(body->mode) || !body->eadatasize)
90 mea = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD,
94 if (mea->mea_count == 0)
96 if (mea->mea_magic != MEA_MAGIC_LAST_CHAR &&
97 mea->mea_magic != MEA_MAGIC_ALL_CHARS &&
98 mea->mea_magic != MEA_MAGIC_HASH_SEGMENT)
104 static inline int lmv_get_easize(struct lmv_obd *lmv)
106 return sizeof(struct lmv_stripe_md) +
107 lmv->desc.ld_tgt_count *
108 sizeof(struct lu_fid);
111 static inline struct lmv_tgt_desc *
112 lmv_get_target(struct lmv_obd *lmv, u32 mds)
114 int count = lmv->desc.ld_tgt_count;
117 for (i = 0; i < count; i++) {
118 if (lmv->tgts[i] == NULL)
121 if (lmv->tgts[i]->ltd_idx == mds)
125 return ERR_PTR(-ENODEV);
128 static inline struct lmv_tgt_desc *
129 lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid)
134 if (lmv->desc.ld_tgt_count > 1) {
135 rc = lmv_fld_lookup(lmv, fid, &mds);
140 return lmv_get_target(lmv, mds);
144 *lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
147 #if defined(CONFIG_PROC_FS)
148 void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars);
150 static inline void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars)
152 memset(lvars, 0, sizeof(*lvars));
155 extern struct file_operations lmv_proc_target_fops;