extent_start;
ptr = btrfs_file_extent_inline_start(item) + extent_offset;
map = kmap(page);
- copy_size = min(PAGE_CACHE_SIZE - page_offset,
+ copy_size = min_t(u64, PAGE_CACHE_SIZE - page_offset,
size - extent_offset);
em->block_start = EXTENT_MAP_INLINE;