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>

diff --git a/lib/bitmap.c b/lib/bitmap.c
index c2f3807b360189611c8d6dd323d9f8519bfcc53e..faaf7206d4cf30adb268d329beb8c2814ddf760f 100644 (file)
--- 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);