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lib: bitmap: remove unnecessary mask from bitmap_complement

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Since the extra bits are "don't care", there is no reason to mask the
last word to the used bits when complementing.  This shaves off yet a
few bytes.

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 16:09:57 -07:00 committed by Linus Torvalds
parent 3d6684f4e6
commit 65b4ee62c9
2 changed files with 2 additions and 2 deletions
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2
include/linux/bitmap.h
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@ -225,7 +225,7 @@ static inline void bitmap_complement(unsigned long *dst, const unsigned long *sr
unsigned int nbits)
{
if (small_const_nbits(nbits))
*dst = ~(*src) & BITMAP_LAST_WORD_MASK(nbits);
*dst = ~(*src);
else
__bitmap_complement(dst, src, nbits);
}

2
lib/bitmap.c
View File

@ -93,7 +93,7 @@ void __bitmap_complement(unsigned long *dst, const unsigned long *src, unsigned
dst[k] = ~src[k];
if (bits % BITS_PER_LONG)
dst[k] = ~src[k] & BITMAP_LAST_WORD_MASK(bits);
dst[k] = ~src[k];
}
EXPORT_SYMBOL(__bitmap_complement);