Name
bitmap_find_next_zero_area_off —
find a contiguous aligned zero area
Synopsis
unsigned long bitmap_find_next_zero_area_off ( | unsigned long * map, |
| | unsigned long size, |
| | unsigned long start, |
| | unsigned int nr, |
| | unsigned long align_mask, |
| | unsigned long align_offset); |
Arguments
map
The address to base the search on
size
The bitmap size in bits
start
The bitnumber to start searching at
nr
The number of zeroed bits we're looking for
align_mask
Alignment mask for zero area
align_offset
Alignment offset for zero area.
Description
The align_mask should be one less than a power of 2; the effect is that
the bit offset of all zero areas this function finds plus align_offset
is multiple of that power of 2.