btrfs_test_range_bit
bool btrfs_test_range_bit(struct extent_io_tree *tree, u64 start, u64 end, u32 bit,
ret = btrfs_test_range_bit(tree, delalloc_start, delalloc_end,
btrfs_test_range_bit(&inode->io_tree, file_offset, end, EXTENT_NODATASUM,
if (btrfs_test_range_bit(&rc->processed_blocks, bytenr,