Simplify useless 0L constants

In ancient times, these belonged to arguments or fields that were
actually of type long, but now they are not anymore, so this "L"
decoration is just confusing.  (Some other 0L and other "L" constants
remain, where they are actually associated with a long type.)

src/backend/access/transam/xlogarchive.c

@@ -148,7 +148,7 @@ RestoreArchivedFile(char *path, const char *xlogfname,
 		Assert(strcmp(lastRestartPointFname, xlogfname) <= 0);
 	}
 	else
-		XLogFileName(lastRestartPointFname, 0, 0L, wal_segment_size);
+		XLogFileName(lastRestartPointFname, 0, 0, wal_segment_size);
 
 	/* Build the restore command to execute */
 	xlogRestoreCmd = BuildRestoreCommand(recoveryRestoreCommand,

src/backend/backup/backup_manifest.c

@@ -349,7 +349,7 @@ SendBackupManifest(backup_manifest_info *manifest, bbsink *sink)
 	 * We've written all the data to the manifest file.  Rewind the file so
 	 * that we can read it all back.
 	 */
-	if (BufFileSeek(manifest->buffile, 0, 0L, SEEK_SET))
+	if (BufFileSeek(manifest->buffile, 0, 0, SEEK_SET))
 		ereport(ERROR,
 				(errcode_for_file_access(),
 				 errmsg("could not rewind temporary file")));

src/backend/commands/copyto.c

@@ -883,7 +883,7 @@ DoCopyTo(CopyToState cstate)
 	else
 	{
 		/* run the plan --- the dest receiver will send tuples */
-		ExecutorRun(cstate->queryDesc, ForwardScanDirection, 0L, true);
+		ExecutorRun(cstate->queryDesc, ForwardScanDirection, 0, true);
 		processed = ((DR_copy *) cstate->queryDesc->dest)->processed;
 	}
 

src/backend/commands/createas.c

@@ -333,7 +333,7 @@ ExecCreateTableAs(ParseState *pstate, CreateTableAsStmt *stmt,
 		ExecutorStart(queryDesc, GetIntoRelEFlags(into));
 
 		/* run the plan to completion */
-		ExecutorRun(queryDesc, ForwardScanDirection, 0L, true);
+		ExecutorRun(queryDesc, ForwardScanDirection, 0, true);
 
 		/* save the rowcount if we're given a qc to fill */
 		if (qc)

src/backend/commands/explain.c

@@ -601,7 +601,7 @@ ExplainOnePlan(PlannedStmt *plannedstmt, IntoClause *into, ExplainState *es,
 			dir = ForwardScanDirection;
 
 		/* run the plan */
-		ExecutorRun(queryDesc, dir, 0L, true);
+		ExecutorRun(queryDesc, dir, 0, true);
 
 		/* run cleanup too */
 		ExecutorFinish(queryDesc);

src/backend/commands/matview.c

@@ -417,7 +417,7 @@ refresh_matview_datafill(DestReceiver *dest, Query *query,
 	ExecutorStart(queryDesc, 0);
 
 	/* run the plan */
-	ExecutorRun(queryDesc, ForwardScanDirection, 0L, true);
+	ExecutorRun(queryDesc, ForwardScanDirection, 0, true);
 
 	processed = queryDesc->estate->es_processed;
 

src/backend/commands/portalcmds.c

@@ -417,7 +417,7 @@ PersistHoldablePortal(Portal portal)
 										NULL);
 
 		/* Fetch the result set into the tuplestore */
-		ExecutorRun(queryDesc, direction, 0L, false);
+		ExecutorRun(queryDesc, direction, 0, false);
 
 		queryDesc->dest->rDestroy(queryDesc->dest);
 		queryDesc->dest = NULL;

src/backend/executor/nodeHashjoin.c

@@ -1072,7 +1072,7 @@ ExecHashJoinNewBatch(HashJoinState *hjstate)
 
 	if (innerFile != NULL)
 	{
-		if (BufFileSeek(innerFile, 0, 0L, SEEK_SET))
+		if (BufFileSeek(innerFile, 0, 0, SEEK_SET))
 			ereport(ERROR,
 					(errcode_for_file_access(),
 					 errmsg("could not rewind hash-join temporary file")));
@@ -1102,7 +1102,7 @@ ExecHashJoinNewBatch(HashJoinState *hjstate)
 	 */
 	if (hashtable->outerBatchFile[curbatch] != NULL)
 	{
-		if (BufFileSeek(hashtable->outerBatchFile[curbatch], 0, 0L, SEEK_SET))
+		if (BufFileSeek(hashtable->outerBatchFile[curbatch], 0, 0, SEEK_SET))
 			ereport(ERROR,
 					(errcode_for_file_access(),
 					 errmsg("could not rewind hash-join temporary file")));

src/backend/storage/file/buffile.c

@@ -119,7 +119,7 @@ makeBufFileCommon(int nfiles)
 	file->dirty = false;
 	file->resowner = CurrentResourceOwner;
 	file->curFile = 0;
-	file->curOffset = 0L;
+	file->curOffset = 0;
 	file->pos = 0;
 	file->nbytes = 0;
 
@@ -439,7 +439,7 @@ BufFileLoadBuffer(BufFile *file)
 		file->curFile + 1 < file->numFiles)
 	{
 		file->curFile++;
-		file->curOffset = 0L;
+		file->curOffset = 0;
 	}
 
 	thisfile = file->files[file->curFile];
@@ -511,7 +511,7 @@ BufFileDumpBuffer(BufFile *file)
 			while (file->curFile + 1 >= file->numFiles)
 				extendBufFile(file);
 			file->curFile++;
-			file->curOffset = 0L;
+			file->curOffset = 0;
 		}
 
 		/*

src/backend/tcop/pquery.c

@@ -157,7 +157,7 @@ ProcessQuery(PlannedStmt *plan,
 	/*
 	 * Run the plan to completion.
 	 */
-	ExecutorRun(queryDesc, ForwardScanDirection, 0L, true);
+	ExecutorRun(queryDesc, ForwardScanDirection, 0, true);
 
 	/*
 	 * Build command completion status data, if caller wants one.

src/backend/utils/sort/tuplestore.c

@@ -1246,11 +1246,11 @@ tuplestore_rescan(Tuplestorestate *state)
 		case TSS_WRITEFILE:
 			readptr->eof_reached = false;
 			readptr->file = 0;
-			readptr->offset = 0L;
+			readptr->offset = 0;
 			break;
 		case TSS_READFILE:
 			readptr->eof_reached = false;
-			if (BufFileSeek(state->myfile, 0, 0L, SEEK_SET) != 0)
+			if (BufFileSeek(state->myfile, 0, 0, SEEK_SET) != 0)
 				ereport(ERROR,
 						(errcode_for_file_access(),
 						 errmsg("could not seek in tuplestore temporary file")));