Fix comment.

XLByteToSeg and XLByteToPrevSeg calculate only a segment number.  The
definition of these macros were modified by commit
dfda6ebaec6763090fb78b458a979b558c50b39b but the comment remain
unchanged.

Patch by Yugo Nagata. Back patched to 9.3 and beyond.

diff --git a/src/include/access/xlog_internal.h b/src/include/access/xlog_internal.h
index 030ffca593f69e95d1f6d55023601ad6776e4677..1850dc94b7e30637d2c6933c46005e41872798a8 100644 (file)
--- a/src/include/access/xlog_internal.h
+++ b/src/include/access/xlog_internal.h
@@ -120,7 +120,7 @@ typedef XLogLongPageHeaderData *XLogLongPageHeader;
        (dest) = (segno) * XLOG_SEG_SIZE + (offset)
 
 /*
- * Compute ID and segment from an XLogRecPtr.
+ * Compute a segment number from an XLogRecPtr.
  *
  * For XLByteToSeg, do the computation at face value.  For XLByteToPrevSeg,
  * a boundary byte is taken to be in the previous segment.  This is suitable