xfs: remove xfs_defer_reset

Remove this one-line helper since the assert is trivially true in one
call site and the rest obscures a bitmask operation.
Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: NDave Chinner <dchinner@redhat.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NBrian Foster <bfoster@redhat.com>

fs/xfs/libxfs/xfs_defer.c

@@ -312,22 +312,6 @@ xfs_defer_trans_roll(
 	return error;
 }
 
-/*
- * Reset an already used dfops after finish.
- */
-static void
-xfs_defer_reset(
-	struct xfs_trans	*tp)
-{
-	ASSERT(list_empty(&tp->t_dfops));
-
-	/*
-	 * Low mode state transfers across transaction rolls to mirror dfops
-	 * lifetime. Clear it now that dfops is reset.
-	 */
-	tp->t_flags &= ~XFS_TRANS_LOWMODE;
-}
-
 /*
  * Free up any items left in the list.
  */
@@ -477,7 +461,10 @@ xfs_defer_finish(
 			return error;
 		}
 	}
-	xfs_defer_reset(*tp);
+
+	/* Reset LOWMODE now that we've finished all the dfops. */
+	ASSERT(list_empty(&(*tp)->t_dfops));
+	(*tp)->t_flags &= ~XFS_TRANS_LOWMODE;
 	return 0;
 }
 
@@ -551,8 +538,7 @@ xfs_defer_move(
 	 * that behavior.
 	 */
 	dtp->t_flags |= (stp->t_flags & XFS_TRANS_LOWMODE);
-
-	xfs_defer_reset(stp);
+	stp->t_flags &= ~XFS_TRANS_LOWMODE;
 }
 
 /*