xfs: simplify xfs_btree_check_lblock_siblings

Stop using xfs_btree_check_lptr in xfs_btree_check_lblock_siblings,
as it only duplicates the xfs_verify_fsbno call in the other leg of
if / else besides adding a tautological level check.

With this the cur and level arguments can be removed as they are
now unused.
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/libxfs/xfs_btree.c

@@ -59,8 +59,6 @@ xfs_btree_magic(
 static inline xfs_failaddr_t
 xfs_btree_check_lblock_siblings(
 	struct xfs_mount	*mp,
-	struct xfs_btree_cur	*cur,
-	int			level,
 	xfs_fsblock_t		fsb,
 	__be64			dsibling)
 {
@@ -72,14 +70,8 @@ xfs_btree_check_lblock_siblings(
 	sibling = be64_to_cpu(dsibling);
 	if (sibling == fsb)
 		return __this_address;
-	if (level >= 0) {
-		if (!xfs_btree_check_lptr(cur, sibling, level + 1))
-			return __this_address;
-	} else {
-		if (!xfs_verify_fsbno(mp, sibling))
-			return __this_address;
-	}
-
+	if (!xfs_verify_fsbno(mp, sibling))
+		return __this_address;
 	return NULL;
 }
 
@@ -139,10 +131,9 @@ __xfs_btree_check_lblock(
 	if (bp)
 		fsb = XFS_DADDR_TO_FSB(mp, xfs_buf_daddr(bp));
 
-	fa = xfs_btree_check_lblock_siblings(mp, cur, level, fsb,
-			block->bb_u.l.bb_leftsib);
+	fa = xfs_btree_check_lblock_siblings(mp, fsb, block->bb_u.l.bb_leftsib);
 	if (!fa)
-		fa = xfs_btree_check_lblock_siblings(mp, cur, level, fsb,
+		fa = xfs_btree_check_lblock_siblings(mp, fsb,
 				block->bb_u.l.bb_rightsib);
 	return fa;
 }
@@ -4651,10 +4642,9 @@ xfs_btree_lblock_verify(
 
 	/* sibling pointer verification */
 	fsb = XFS_DADDR_TO_FSB(mp, xfs_buf_daddr(bp));
-	fa = xfs_btree_check_lblock_siblings(mp, NULL, -1, fsb,
-			block->bb_u.l.bb_leftsib);
+	fa = xfs_btree_check_lblock_siblings(mp, fsb, block->bb_u.l.bb_leftsib);
 	if (!fa)
-		fa = xfs_btree_check_lblock_siblings(mp, NULL, -1, fsb,
+		fa = xfs_btree_check_lblock_siblings(mp, fsb,
 				block->bb_u.l.bb_rightsib);
 	return fa;
 }