BITMAP_FIND_FREE_REGION

NAME

SYNOPSIS

int bitmap_find_free_region (unsigned long * bitmap, int bits, int order);  

ARGUMENTS

bitmap

an array of unsigned longs corresponding to the bitmap

bits

number of bits in the bitmap

order

region size to find (size is actually 1<<order)

DESCRIPTION

This is used to allocate a memory region from a bitmap. The idea is that the region has to be 1<<order sized and 1<<order aligned (this makes the search algorithm much faster).

The region is marked as set bits in the bitmap if a free one is found.

Returns either beginning of region or negative error

Index

NAME

SYNOPSIS

ARGUMENTS

DESCRIPTION