xfs: simplify xfs_btree_check_sblock_siblings

Stop using xfs_btree_check_sptr in xfs_btree_check_sblock_siblings,
as it only duplicates the xfs_verify_agbno 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

@@ -86,8 +86,6 @@ xfs_btree_check_lblock_siblings(
 static inline xfs_failaddr_t
 xfs_btree_check_sblock_siblings(
 	struct xfs_perag	*pag,
-	struct xfs_btree_cur	*cur,
-	int			level,
 	xfs_agblock_t		agbno,
 	__be32			dsibling)
 {
@@ -99,13 +97,8 @@ xfs_btree_check_sblock_siblings(
 	sibling = be32_to_cpu(dsibling);
 	if (sibling == agbno)
 		return __this_address;
-	if (level >= 0) {
-		if (!xfs_btree_check_sptr(cur, sibling, level + 1))
-			return __this_address;
-	} else {
-		if (!xfs_verify_agbno(pag, sibling))
-			return __this_address;
-	}
+	if (!xfs_verify_agbno(pag, sibling))
+		return __this_address;
 	return NULL;
 }
 
@@ -212,10 +205,10 @@ __xfs_btree_check_sblock(
 	if (bp)
 		agbno = xfs_daddr_to_agbno(mp, xfs_buf_daddr(bp));
 
-	fa = xfs_btree_check_sblock_siblings(pag, cur, level, agbno,
+	fa = xfs_btree_check_sblock_siblings(pag, agbno,
 			block->bb_u.s.bb_leftsib);
 	if (!fa)
-		fa = xfs_btree_check_sblock_siblings(pag, cur, level, agbno,
+		fa = xfs_btree_check_sblock_siblings(pag, agbno,
 				block->bb_u.s.bb_rightsib);
 	return fa;
 }
@@ -4713,10 +4706,10 @@ xfs_btree_sblock_verify(
 
 	/* sibling pointer verification */
 	agbno = xfs_daddr_to_agbno(mp, xfs_buf_daddr(bp));
-	fa = xfs_btree_check_sblock_siblings(bp->b_pag, NULL, -1, agbno,
+	fa = xfs_btree_check_sblock_siblings(bp->b_pag, agbno,
 			block->bb_u.s.bb_leftsib);
 	if (!fa)
-		fa = xfs_btree_check_sblock_siblings(bp->b_pag, NULL, -1, agbno,
+		fa = xfs_btree_check_sblock_siblings(bp->b_pag, agbno,
 				block->bb_u.s.bb_rightsib);
 	return fa;
 }