+/**
+ * nilfs_store_log_cursor - load log cursor from a super block
+ * @nilfs: nilfs object
+ * @sbp: buffer storing super block to be read
+ *
+ * nilfs_store_log_cursor() reads the last position of the log
+ * containing a super root from a given super block, and initializes
+ * relevant information on the nilfs object preparatory for log
+ * scanning and recovery.
+ */
+static int nilfs_store_log_cursor(struct the_nilfs *nilfs,
+ struct nilfs_super_block *sbp)
+{
+ int ret = 0;
+
+ nilfs->ns_last_pseg = le64_to_cpu(sbp->s_last_pseg);
+ nilfs->ns_last_cno = le64_to_cpu(sbp->s_last_cno);
+ nilfs->ns_last_seq = le64_to_cpu(sbp->s_last_seq);
+
+ nilfs->ns_seg_seq = nilfs->ns_last_seq;
+ nilfs->ns_segnum =
+ nilfs_get_segnum_of_block(nilfs, nilfs->ns_last_pseg);
+ nilfs->ns_cno = nilfs->ns_last_cno + 1;
+ if (nilfs->ns_segnum >= nilfs->ns_nsegments) {
+ printk(KERN_ERR "NILFS invalid last segment number.\n");
+ ret = -EINVAL;
+ }
+ return ret;
+}
+