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lib: bitmap: make nbits parameter of bitmap_equal unsigned

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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>
This commit is contained in:
Rasmus Villemoes 2014-08-06 16:09:53 -07:00 committed by Linus Torvalds
parent 8397927c80
commit 5e06806931
2 changed files with 3 additions and 3 deletions
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2
include/linux/bitmap.h
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@ -91,7 +91,7 @@
extern int __bitmap_empty(const unsigned long *bitmap, unsigned int nbits);
extern int __bitmap_full(const unsigned long *bitmap, unsigned int nbits);
extern int __bitmap_equal(const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits);
const unsigned long *bitmap2, unsigned int nbits);
extern void __bitmap_complement(unsigned long *dst, const unsigned long *src,
int bits);
extern void __bitmap_shift_right(unsigned long *dst,

4
lib/bitmap.c
View File

@ -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;