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authorRasmus Villemoes <linux@rasmusvillemoes.dk>2014-08-07 03:09:53 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-07 05:01:26 +0400
commit5e068069319a9fb02fb14337c2cedeae5f16d812 (patch)
tree953532fac2a7331848de5e97ccf6eee2d8cff638 /lib
parent8397927c8045c58afc68ef839855eb5505259df3 (diff)
downloadlinux-5e068069319a9fb02fb14337c2cedeae5f16d812.tar.xz
lib: bitmap: make nbits parameter of bitmap_equal unsigned
The compiler can generate slightly smaller and simpler code when it knows that "nbits" is non-negative. Since no-one passes a negative bit-count, this shouldn't affect the semantics. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/bitmap.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/bitmap.c b/lib/bitmap.c
index 9859f38660f9..d6bb955e71cb 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -71,9 +71,9 @@ int __bitmap_full(const unsigned long *bitmap, unsigned int bits)
EXPORT_SYMBOL(__bitmap_full);
int __bitmap_equal(const unsigned long *bitmap1,
- const unsigned long *bitmap2, int bits)
+ const unsigned long *bitmap2, unsigned int bits)
{
- int k, lim = bits/BITS_PER_LONG;
+ unsigned int k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k)
if (bitmap1[k] != bitmap2[k])
return 0;