linux-kernel - [PATCH] percpu: use bitmap

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Date:	Sat, 21 Jan 2012 00:15:23 +0900
From:	Akinobu Mita <akinobu.mita@...il.com>
To:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org
Cc:	Akinobu Mita <akinobu.mita@...il.com>, Tejun Heo <tj@...nel.org>,
	Christoph Lameter <cl@...ux-foundation.org>
Subject: [PATCH] percpu: use bitmap_clear

Use bitmap_clear rather than clearing individual bits in a memory region.

Signed-off-by: Akinobu Mita <akinobu.mita@...il.com>
Cc: Tejun Heo <tj@...nel.org>
Cc: Christoph Lameter <cl@...ux-foundation.org>
---
 mm/percpu-vm.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/mm/percpu-vm.c b/mm/percpu-vm.c
index 12a48a88..405d331 100644
--- a/mm/percpu-vm.c
+++ b/mm/percpu-vm.c
@@ -184,8 +184,7 @@ static void pcpu_unmap_pages(struct pcpu_chunk *chunk,
 				   page_end - page_start);
 	}
 
-	for (i = page_start; i < page_end; i++)
-		__clear_bit(i, populated);
+	bitmap_clear(populated, page_start, page_end - page_start);
 }
 
 /**
-- 
1.7.4.4

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