diff options
Diffstat (limited to 'lib/bitmap.c')
| -rw-r--r-- | lib/bitmap.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/bitmap.c b/lib/bitmap.c index ce2ec80bf431..1e031f2c9aba 100644 --- a/lib/bitmap.c +++ b/lib/bitmap.c @@ -223,11 +223,14 @@ int __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1, const unsigned long *bitmap2, unsigned int bits) { unsigned int k; - unsigned int nr = BITS_TO_LONGS(bits); + unsigned int lim = bits/BITS_PER_LONG; unsigned long result = 0; - for (k = 0; k < nr; k++) + for (k = 0; k < lim; k++) result |= (dst[k] = bitmap1[k] & ~bitmap2[k]); + if (bits % BITS_PER_LONG) + result |= (dst[k] = bitmap1[k] & ~bitmap2[k] & + BITMAP_LAST_WORD_MASK(bits)); return result != 0; } EXPORT_SYMBOL(__bitmap_andnot); |