bitmap_allocate_region (9)

int bitmap_allocate_region(unsigned long * bitmap, int pos, int order);

bitmap

array of unsigned longs corresponding to the bitmap

pos

beginning of bit region to allocate

order

region size (log base 2 of number of bits) to allocate

Allocate (set bits in) a specified region of a bitmap.

Return 0 on success, or -EBUSY if specified region wasn't free (not all bits were zero).