diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index b599e6b..25e5eae 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -140,6 +140,8 @@
 	pct = in->imaxpct;
 	if (nb < mp->m_sb.sb_dblocks || pct < 0 || pct > 100)
 		return XFS_ERROR(EINVAL);
+	if ((error = xfs_sb_validate_fsb_count(&mp->m_sb, nb)))
+		return error;
 	dpct = pct - mp->m_sb.sb_imax_pct;
 	error = xfs_read_buf(mp, mp->m_ddev_targp,
 			XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1),