Swap with another unique_ptr

* __test_and_set_bit - Set a bit and return its old value * @nr: Bit to set * @addr: Address to count from * * This operation is non-atomic and ca

Action FillArgBuffer<k>(data, length) copies the elements in source range [data, data+length) to the buffer pointed to by the k-th (0-based) argument.

Add File Info Meta, value length less than 1k

Append the bitmap as a 01 string to a string

for test and debug only

Only for test and debug, should not be used in normal code logical

Return memory size in bytes, include padding bits

Hash function for a string.