diff options
Diffstat (limited to 'lib')
| -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 faaf7206d4cf..ce2ec80bf431 100644 --- a/lib/bitmap.c +++ b/lib/bitmap.c @@ -185,11 +185,14 @@ int __bitmap_and(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_and); |