From 65b4ee62c9cd10640f0054f47fd84c7920e8c118 Mon Sep 17 00:00:00 2001 From: Rasmus Villemoes Date: Wed, 6 Aug 2014 16:09:57 -0700 Subject: [PATCH] lib: bitmap: remove unnecessary mask from bitmap_complement 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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/bitmap.h | 2 +- lib/bitmap.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h index 21fb52f..f42d72d 100644 --- a/include/linux/bitmap.h +++ b/include/linux/bitmap.h @@ -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); } diff --git a/lib/bitmap.c b/lib/bitmap.c index 0f2f845..4387e3c 100644 --- a/lib/bitmap.c +++ b/lib/bitmap.c @@ -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); -- 2.7.4