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authorRasmus Villemoes <linux@rasmusvillemoes.dk>2014-08-07 01:09:57 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-07 03:01:26 +0200
commit65b4ee62c9cd10640f0054f47fd84c7920e8c118 (patch)
treee60b0c786a55b876b170f77753d15f772cc01c27
parentlib: bitmap: make nbits parameter of bitmap_complement unsigned (diff)
downloadlinux-65b4ee62c9cd10640f0054f47fd84c7920e8c118.tar.xz
linux-65b4ee62c9cd10640f0054f47fd84c7920e8c118.zip
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 <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/linux/bitmap.h2
-rw-r--r--lib/bitmap.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h
index 21fb52ffe444..f42d72d5fe82 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 0f2f845702eb..4387e3c092fd 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);