fix some examples which haven't been updated to the new nchildren filter field

examples/lu/xlu_pivot.c

@@ -315,11 +315,11 @@ void STARPU_LU(lu_decomposition_pivot)(TYPE *matA, unsigned *ipiv, unsigned size
 
 	struct starpu_data_filter f;
 		f.filter_func = starpu_vertical_block_filter_func;
-		f.filter_arg = nblocks;
+		f.nchildren = nblocks;
 
 	struct starpu_data_filter f2;
 		f2.filter_func = starpu_block_filter_func;
-		f2.filter_arg = nblocks;
+		f2.nchildren = nblocks;
 
 	starpu_data_map_filters(dataA, 2, &f, &f2);
 

examples/ppm_downscaler/yuv_downscaler.c

@@ -192,8 +192,8 @@ int main(int argc, char **argv)
 	}
 
 	/* how many tasks are there ? */
-	unsigned nblocks_y = filter_y.filter_arg;
-	unsigned nblocks_uv = filter_uv.filter_arg;
+	unsigned nblocks_y = filter_y.nchildren;
+	unsigned nblocks_uv = filter_uv.nchildren;
 
 	unsigned ntasks = (nblocks_y + 2*nblocks_uv)*nframes;
 

examples/spmv/dw_block_spmv.c

@@ -112,12 +112,12 @@ void call_filters(void)
 	bcsr_f.get_child_ops = get_bcsr_child_ops;
 
 	vector_in_f.filter_func = starpu_block_filter_func_vector;
-	vector_in_f.filter_arg  = size/c;
+	vector_in_f.nchildren  = size/c;
 	vector_in_f.get_nchildren  = NULL;
 	vector_in_f.get_child_ops  = NULL;
 	
 	vector_out_f.filter_func = starpu_block_filter_func_vector;
-	vector_out_f.filter_arg  = size/r;
+	vector_out_f.nchildren  = size/r;
 	vector_out_f.get_nchildren  = NULL;
 	vector_out_f.get_child_ops  = NULL;