## Virtual Device Driver Reference for OS/2

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### VDHGetDirtyPageInfo Return Value - rc

rc (ULONG) - returns

Success If the function is successful, it returns the bit vector. The low- order bit (that is, bit 0, the rightmost bit) is the dirty bit for the first page scanned. Bit 1 (from the right) is the dirty bit for the next page, and so forth for all the pages scanned.

Failure If any of the input parameters are invalid, a system halt occurs.