xfs: use ->t_firstblock in reflink cow block cancel

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c
index 2972efeee5cc..891214242118 100644
--- a/fs/xfs/xfs_reflink.c
+++ b/fs/xfs/xfs_reflink.c
@@ -483,7 +483,6 @@ xfs_reflink_cancel_cow_blocks(
         struct xfs_ifork                *ifp = XFS_IFORK_PTR(ip, XFS_COW_FORK);
         struct xfs_bmbt_irec            got, del;
         struct xfs_iext_cursor          icur;
-        xfs_fsblock_t                   firstfsb;
         struct xfs_defer_ops            dfops;
         struct xfs_defer_ops            *odfops = (*tpp)->t_dfops;
         int                             error = 0;
@@ -512,7 +511,7 @@ xfs_reflink_cancel_cow_blocks(
                         if (error)
                                 break;
                 } else if (del.br_state == XFS_EXT_UNWRITTEN || cancel_real) {
-                        xfs_defer_init(*tpp, &dfops, &firstfsb);
+                        xfs_defer_init(*tpp, &dfops, &(*tpp)->t_firstblock);
 
                         /* Free the CoW orphan record. */
                         error = xfs_refcount_free_cow_extent(ip->i_mount,