37a38,39
> class WriteMask;
>
60a63
> uint8_t *getDataMod(int offset);
62a66,68
> void copyPartial(const DataBlock &dblk, int offset, int len);
> void copyPartial(const DataBlock &dblk, const WriteMask &mask);
> void atomicPartial(const DataBlock & dblk, const WriteMask & mask);