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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>
This commit is contained in:
Rasmus Villemoes 2014-08-06 16:10:18 -07:00 committed by Linus Torvalds
parent 9279d3286e
commit 2ac521d332
1 changed files with 1 additions and 2 deletions
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lib/bitmap.c
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@ -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)) if (!__reg_op(bitmap, pos, order, REG_OP_ISFREE))
return -EBUSY; return -EBUSY;
__reg_op(bitmap, pos, order, REG_OP_ALLOC); return __reg_op(bitmap, pos, order, REG_OP_ALLOC);
return 0;
} }
EXPORT_SYMBOL(bitmap_allocate_region); EXPORT_SYMBOL(bitmap_allocate_region);