xfs: remove the which variable in xchk_iallocbt

The which variable that holds a btree number is passed to two functions
that ignore it and used in a single check that can check the sm_type
as well.  Remove it to unclutter the code.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>

fs/xfs/scrub/ialloc.c

@@ -649,8 +649,7 @@ xchk_iallocbt_rec(
  */
 STATIC void
 xchk_iallocbt_xref_rmap_btreeblks(
-	struct xfs_scrub	*sc,
-	int			which)
+	struct xfs_scrub	*sc)
 {
 	xfs_filblks_t		blocks;
 	xfs_extlen_t		inobt_blocks = 0;
@@ -688,7 +687,6 @@ xchk_iallocbt_xref_rmap_btreeblks(
 STATIC void
 xchk_iallocbt_xref_rmap_inodes(
 	struct xfs_scrub	*sc,
-	int			which,
 	unsigned long long	inodes)
 {
 	xfs_filblks_t		blocks;
@@ -719,17 +717,14 @@ xchk_iallocbt(
 		.next_startino	= NULLAGINO,
 		.next_cluster_ino = NULLAGINO,
 	};
-	xfs_btnum_t		which;
 	int			error;
 
 	switch (sc->sm->sm_type) {
 	case XFS_SCRUB_TYPE_INOBT:
 		cur = sc->sa.ino_cur;
-		which = XFS_BTNUM_INO;
 		break;
 	case XFS_SCRUB_TYPE_FINOBT:
 		cur = sc->sa.fino_cur;
-		which = XFS_BTNUM_FINO;
 		break;
 	default:
 		ASSERT(0);
@@ -741,7 +736,7 @@ xchk_iallocbt(
 	if (error)
 		return error;
 
-	xchk_iallocbt_xref_rmap_btreeblks(sc, which);
+	xchk_iallocbt_xref_rmap_btreeblks(sc);
 
 	/*
 	 * If we're scrubbing the inode btree, inode_blocks is the number of
@@ -750,9 +745,8 @@ xchk_iallocbt(
 	 * knows about.  We can't do this for the finobt since it only points
 	 * to inode chunks with free inodes.
 	 */
-	if (which == XFS_BTNUM_INO)
-		xchk_iallocbt_xref_rmap_inodes(sc, which, iabt.inodes);
-
+	if (sc->sm->sm_type == XFS_SCRUB_TYPE_INOBT)
+		xchk_iallocbt_xref_rmap_inodes(sc, iabt.inodes);
 	return error;
 }