diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c
index 5aceb3f8ecd625de029daaff00e6093a0e0213a2..445bf1aef31c16d9e6bd17a8b91e78d7f1763c05 100644
--- a/fs/xfs/xfs_ialloc.c
+++ b/fs/xfs/xfs_ialloc.c
@@ -431,7 +431,7 @@ xfs_ialloc_next_ag(
 
 	spin_lock(&mp->m_agirotor_lock);
 	agno = mp->m_agirotor;
-	if (++mp->m_agirotor == mp->m_maxagi)
+	if (++mp->m_agirotor >= mp->m_maxagi)
 		mp->m_agirotor = 0;
 	spin_unlock(&mp->m_agirotor_lock);