btrfs_item_nr_offset
((type *)(btrfs_item_nr_offset(leaf, 0) + btrfs_item_offset(leaf, slot)))
((unsigned long)(btrfs_item_nr_offset(leaf, 0) + btrfs_item_offset(leaf, slot)))
return (struct btrfs_item *)btrfs_item_nr_offset(eb, nr);
memmove_extent_buffer(leaf, btrfs_item_nr_offset(leaf, dst_item),
btrfs_item_nr_offset(leaf, src_item),
copy_extent_buffer(dst, src, btrfs_item_nr_offset(dst, dst_item),
btrfs_item_nr_offset(src, src_item),
memmove_extent_buffer(leaf, btrfs_item_nr_offset(leaf, 0) + dst_offset,
btrfs_item_nr_offset(leaf, 0) + src_offset, len);
copy_extent_buffer(dst, src, btrfs_item_nr_offset(dst, 0) + dst_offset,
btrfs_item_nr_offset(src, 0) + src_offset, len);
start = btrfs_item_nr_offset(eb, nritems);
end = btrfs_item_nr_offset(eb, 0);
btrfs_item_nr_offset(leaf, slot) + sizeof(struct btrfs_item))) {
btrfs_item_nr_offset(leaf, slot) +