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authorRasmus Villemoes <linux@rasmusvillemoes.dk>2014-08-07 01:10:18 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-07 03:01:26 +0200
commit2ac521d3325a24f01c1f1e86c74537b831d282c5 (patch)
treefd89c8c59ad2a864b1b72fbb2b9c8a286c6ccd3c /lib
parentlib: bitmap: change parameter of bitmap_*_region to unsigned (diff)
downloadlinux-2ac521d3325a24f01c1f1e86c74537b831d282c5.tar.xz
linux-2ac521d3325a24f01c1f1e86c74537b831d282c5.zip
lib: bitmap: micro-optimize bitmap_allocate_region
__reg_op(..., REG_OP_ALLOC) always returns 0, so we might as well use that and save an instruction. 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.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/lib/bitmap.c b/lib/bitmap.c
index c2f3807b3601..faaf7206d4cf 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -1154,8 +1154,7 @@ int bitmap_allocate_region(unsigned long *bitmap, unsigned int pos, int order)
{
if (!__reg_op(bitmap, pos, order, REG_OP_ISFREE))
return -EBUSY;
- __reg_op(bitmap, pos, order, REG_OP_ALLOC);
- return 0;
+ return __reg_op(bitmap, pos, order, REG_OP_ALLOC);
}
EXPORT_SYMBOL(bitmap_allocate_region);