memmove_extent_buffer
memmove_extent_buffer(leaf, btrfs_item_nr_offset(leaf, dst_item),
memmove_extent_buffer(src, btrfs_node_key_ptr_offset(src, 0),
memmove_extent_buffer(dst, btrfs_node_key_ptr_offset(dst, push_items),
memmove_extent_buffer(lower,
memmove_extent_buffer(leaf, ptr,
memmove_extent_buffer(parent,
memmove_extent_buffer(leaf, btrfs_item_nr_offset(leaf, 0) + dst_offset,
memmove_extent_buffer(leaf, ptr, ptr + sub_item_len,
memmove_extent_buffer(leaf, ptr + size, ptr,
memmove_extent_buffer(leaf, ptr, ptr + size,
void memmove_extent_buffer(const struct extent_buffer *dst,
memmove_extent_buffer(leaf, ptr, ptr + del_len,
memmove_extent_buffer(leaf, ptr, ptr + sub_item_len,
memmove_extent_buffer(eb, 512, 256, 512);
memmove_extent_buffer(eb, 2048, 512, 2048);
memmove_extent_buffer(eb, 512, 2048, 2048);
memmove_extent_buffer(eb, 4096 - 128, 4096 - 64, 256);
memmove_extent_buffer(eb, 4096 - 64, 4096 - 128, 256);
memmove_extent_buffer(eb, o_dst, o_src,
memmove_extent_buffer(eb, move_dst, move_src, move_len);