wnd_map
bh = wnd_map(wnd, iw);
bh = wnd_map(wnd, iw);
bh = wnd_map(wnd, iw);
static struct buffer_head *wnd_map(struct wnd_bitmap *wnd, size_t iw);
bh = wnd_map(wnd, iw);
bh = wnd_map(wnd, iw);
struct buffer_head *bh = wnd_map(wnd, iw);
struct buffer_head *bh = wnd_map(wnd, iw);