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| author | Alex Elder <elder@ieee.org> | 2009-09-10 14:33:56 -0500 |
|---|---|---|
| committer | Alex Elder <aelder@sgi.com> | 2009-09-10 14:33:56 -0500 |
| commit | a4872d5b6ad69a49975c0268828b5bb2317ea5a0 (patch) | |
| tree | f79577c2731753efb621ef62774949c1e0acdaad /lib/bitmap.c | |
| parent | 4734d401d43c6469d568caf223d37aa0fc1bf4dc (diff) | |
| parent | 74fca6a42863ffacaf7ba6f1936a9f228950f657 (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'lib/bitmap.c')
| -rw-r--r-- | lib/bitmap.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/lib/bitmap.c b/lib/bitmap.c index 35a1f7ff414..702565821c9 100644 --- a/lib/bitmap.c +++ b/lib/bitmap.c @@ -179,14 +179,16 @@ void __bitmap_shift_left(unsigned long *dst, } EXPORT_SYMBOL(__bitmap_shift_left); -void __bitmap_and(unsigned long *dst, const unsigned long *bitmap1, +int __bitmap_and(unsigned long *dst, const unsigned long *bitmap1, const unsigned long *bitmap2, int bits) { int k; int nr = BITS_TO_LONGS(bits); + unsigned long result = 0; for (k = 0; k < nr; k++) - dst[k] = bitmap1[k] & bitmap2[k]; + result |= (dst[k] = bitmap1[k] & bitmap2[k]); + return result != 0; } EXPORT_SYMBOL(__bitmap_and); @@ -212,14 +214,16 @@ void __bitmap_xor(unsigned long *dst, const unsigned long *bitmap1, } EXPORT_SYMBOL(__bitmap_xor); -void __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1, +int __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1, const unsigned long *bitmap2, int bits) { int k; int nr = BITS_TO_LONGS(bits); + unsigned long result = 0; for (k = 0; k < nr; k++) - dst[k] = bitmap1[k] & ~bitmap2[k]; + result |= (dst[k] = bitmap1[k] & ~bitmap2[k]); + return result != 0; } EXPORT_SYMBOL(__bitmap_andnot); |