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| BITMAP_FIND_NEXT_ZER(9) | Basic Kernel Library Functions | BITMAP_FIND_NEXT_ZER(9) |
NAME¶
bitmap_find_next_zero_area_off - find a contiguous aligned zero areaSYNOPSIS¶
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¶
mapThe 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.COPYRIGHT¶
| January 2017 | Kernel Hackers Manual 4.8. |