LU-1866 fid: cleanup object visibility definition and check

[fs/lustre-release.git] / lustre / include / lustre_fid.h

diff --git a/lustre/include/lustre_fid.h b/lustre/include/lustre_fid.h
index 99d38da..2c490f6 100644 (file)
--- a/lustre/include/lustre_fid.h
+++ b/lustre/include/lustre_fid.h
@@ -249,6 +249,18 @@ static inline void lu_local_name_obj_fid(struct lu_fid *fid, __u32 oid)
         fid->f_ver = 0;
 }
 
+static inline int fid_is_root(const struct lu_fid *fid)
+{
+       return unlikely(fid_seq(fid) == FID_SEQ_LOCAL_FILE &&
+                       fid_oid(fid) == MDD_ROOT_INDEX_OID);
+}
+
+static inline int fid_is_dot_lustre(const struct lu_fid *fid)
+{
+       return unlikely(fid_seq(fid) == FID_SEQ_DOT_LUSTRE &&
+                       fid_oid(fid) == FID_OID_DOT_LUSTRE);
+}
+
 static inline int fid_is_otable_it(const struct lu_fid *fid)
 {
        return unlikely(fid_seq(fid) == FID_SEQ_LOCAL_FILE &&
@@ -268,6 +280,22 @@ static inline int fid_is_quota(const struct lu_fid *fid)
               fid_seq(fid) == FID_SEQ_QUOTA_GLB;
 }
 
+static inline int fid_is_client_mdt_visible(const struct lu_fid *fid)
+{
+       const __u64 seq = fid_seq(fid);
+
+       /* Here, we cannot distinguish whether the normal FID is for OST
+        * object or not. It is caller's duty to check more if needed. */
+       return (!fid_is_last_id(fid) &&
+               (fid_seq_is_norm(seq) || fid_seq_is_igif(seq))) ||
+              fid_is_root(fid) || fid_is_dot_lustre(fid);
+}
+
+static inline int fid_is_client_visible(const struct lu_fid *fid)
+{
+       return fid_is_client_mdt_visible(fid) || fid_is_idif(fid);
+}
+
 static inline void lu_last_id_fid(struct lu_fid *fid, __u64 seq)
 {
        if (fid_seq_is_mdt0(seq)) {
@@ -388,6 +416,7 @@ struct lu_server_seq {
 };
 
 int seq_query(struct com_thread_info *info);
+int seq_handle(struct ptlrpc_request *req);
 
 /* Server methods */
 int seq_server_init(struct lu_server_seq *seq,
@@ -427,14 +456,14 @@ int seq_client_alloc_fid(const struct lu_env *env, struct lu_client_seq *seq,
                          struct lu_fid *fid);
 int seq_client_get_seq(const struct lu_env *env, struct lu_client_seq *seq,
                        seqno_t *seqnr);
-
 int seq_site_fini(const struct lu_env *env, struct seq_server_site *ss);
 /* Fids common stuff */
 int fid_is_local(const struct lu_env *env,
                  struct lu_site *site, const struct lu_fid *fid);
 
-int client_fid_init(struct obd_export *exp, enum lu_cli_type type);
-int client_fid_fini(struct obd_export *exp);
+int client_fid_init(struct obd_device *obd, struct obd_export *exp,
+                   enum lu_cli_type type);
+int client_fid_fini(struct obd_device *obd);
 
 /* fid locking */
 
@@ -518,6 +547,36 @@ fid_build_pdo_res_name(const struct lu_fid *f,
         return name;
 }
 
+/**
+ * Build DLM resource name from object id & seq, which will be removed
+ * finally, when we replace ost_id with FID in data stack.
+ *
+ * To keep the compatibility, res[0] = oid, res[1] = seq
+ */
+static inline void ostid_build_res_name(struct ost_id *oid,
+                                       struct ldlm_res_id *name)
+{
+       memset(name, 0, sizeof *name);
+       name->name[LUSTRE_RES_ID_SEQ_OFF] = oid->oi_id;
+       name->name[LUSTRE_RES_ID_VER_OID_OFF] = oid->oi_seq;
+}
+
+static inline void ostid_res_name_to_id(struct ost_id *oid,
+                                       struct ldlm_res_id *name)
+{
+       oid->oi_id = name->name[LUSTRE_RES_ID_SEQ_OFF];
+       oid->oi_seq = name->name[LUSTRE_RES_ID_VER_OID_OFF];
+}
+
+/**
+ * Return true if the resource is for the object identified by this id & group.
+ */
+static inline int ostid_res_name_eq(struct ost_id *oid,
+                                   struct ldlm_res_id *name)
+{
+       return name->name[LUSTRE_RES_ID_SEQ_OFF] == oid->oi_id &&
+              name->name[LUSTRE_RES_ID_VER_OID_OFF] == oid->oi_seq;
+}
 
 /**
  * Flatten 128-bit FID values into a 64-bit value for use as an inode number.
@@ -580,6 +639,18 @@ static inline __u32 fid_flatten32(const struct lu_fid *fid)
         RETURN(ino ? ino : fid_oid(fid));
 }
 
+static inline int lu_fid_diff(struct lu_fid *fid1, struct lu_fid *fid2)
+{
+       LASSERTF(fid_seq(fid1) == fid_seq(fid2), "fid1:"DFID", fid2:"DFID"\n",
+                PFID(fid1), PFID(fid2));
+
+       if (fid_is_idif(fid1) && fid_is_idif(fid2))
+               return fid_idif_id(fid1->f_seq, fid1->f_oid, fid1->f_ver) -
+                      fid_idif_id(fid2->f_seq, fid2->f_oid, fid2->f_ver);
+
+       return fid_oid(fid1) - fid_oid(fid2);
+}
+
 #define LUSTRE_SEQ_SRV_NAME "seq_srv"
 #define LUSTRE_SEQ_CTL_NAME "seq_ctl"