Remove dummy extentseqnum argument.

All callers passed 1, so it didn't do anything interesting.

src/backend/access/transam/xact.c

@@ -2386,7 +2386,7 @@ OpenOrCreateSubtransIdFile(DistributedTransactionId dxid)
 	{
 		subxip_file = OpenTemporaryFile(
 			Subtransaction_filename(dxid),
-			1, false, true, true, false);
+			false, true, true, false);
 		// What should be done if this fails ??
 	}
 }
@@ -2791,7 +2791,7 @@ GetSubXidsInXidBuffer(void)
 			subxip_file = OpenTemporaryFile(
 				Subtransaction_filename(
 					SharedLocalSnapshotSlot->QDxid),
-				1, false, false, false, false);
+				false, false, false, false);
 
 			if (subxip_file == 0)
 			{
@@ -2857,7 +2857,7 @@ ShowSubtransactionsForSharedSnapshot(void)
 			subxip_file = OpenTemporaryFile(
 				Subtransaction_filename(
 					SharedLocalSnapshotSlot->QDxid),
-				1, false, false, false, false);
+				false, false, false, false);
 
 			if (subxip_file == 0)
 			{

src/backend/storage/file/buffile.c

@@ -105,7 +105,7 @@ BufFileCreateTemp(const char *filePrefix, bool interXact)
 	File		pfile;
 	bool		closeAtEOXact = !interXact;
 
-	pfile = OpenTemporaryFile(filePrefix, 1, /* extentseqnum */
+	pfile = OpenTemporaryFile(filePrefix,
 							  true, /* makenameunique */
 							  true, /* create */
 							  true, /* delOnClose */
@@ -183,7 +183,7 @@ BufFileCreateTemp_ReaderWriter(const char *filePrefix, bool isWriter,
 							   bool interXact)
 {
 	bool closeAtEOXact = !interXact;
-	File pfile = OpenTemporaryFile(filePrefix, 1, /* extentseqnum */
+	File pfile = OpenTemporaryFile(filePrefix,
 								   false, /* makenameunique */
 								   isWriter, /* create */
 								   isWriter, /* delOnClose */

src/backend/storage/file/fd.c

@@ -884,11 +884,10 @@ FileNameOpenFile(FileName fileName, int fileFlags, int fileMode)
  * should be unique to this particular OpenTemporaryFile() request and
  * distinct from any others in concurrent use on the same host.  As a
  * convenience for monitoring and debugging, the given 'fileName' string
- * and 'extentseqnum' are embedded in the file name.
+ * is embedded in the file name.
  *
- * If 'makenameunique' is false, then 'fileName' and 'extentseqnum' identify a
- * new or existing temporary file which other processes also could open and
- * share.
+ * If 'makenameunique' is false, then 'fileName' identify a new or existing
+ * temporary file which other processes also could open and share.
  *
  * If 'create' is true, a new file is created.  If successful, a valid vfd
  * index (>0) is returned; otherwise an error is thrown.
@@ -912,7 +911,6 @@ FileNameOpenFile(FileName fileName, int fileFlags, int fileMode)
  */
 File
 OpenTemporaryFile(const char   *fileName,
-                  int           extentseqnum,
                   bool          makenameunique,
                   bool          create,
                   bool          delOnClose,
@@ -937,18 +935,16 @@ OpenTemporaryFile(const char   *fileName,
 		 * database instance.
 		 */
 		snprintf(tempfilepath, sizeof(tempfilepath),
-				 "%s_%d_%04d.%ld",
+				 "%s_%d.%ld",
 				 tempfileprefix,
 				 MyProcPid,
-                 extentseqnum,
                  tempFileCounter++);
 	}
 	else
 	{
         snprintf(tempfilepath, sizeof(tempfilepath),
-				 "%s.%04d",
-				 tempfileprefix,
-				 extentseqnum);
+				 "%s",
+				 tempfileprefix);
 	}
 
     return OpenNamedFile(tempfilepath, create, delOnClose, closeAtEOXact);

src/include/storage/fd.h

@@ -65,7 +65,6 @@ extern File PathNameOpenFile(FileName fileName, int fileFlags, int fileMode);
 
 File
 OpenTemporaryFile(const char   *fileName,
-                  int           extentseqnum,
                   bool          makenameunique,
                   bool          create,
                   bool          delOnClose,