linux-kernel - [PATCH 1/6] mm: use BUG

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Message-Id: <1296067193-15879-2-git-send-email-bosong.ly@taobao.com>
Date:	Thu, 27 Jan 2011 02:39:48 +0800
From:	Coly Li <bosong.ly@...bao.com>
To:	linux-kernel@...r.kernel.org
Cc:	Coly Li <bosong.ly@...bao.com>,
	David Howells <dhowells@...hat.com>,
	Christoph Hellwig <hch@....de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH 1/6] mm: use BUG_ON correctly in nommu.c

This patch makes BUG_ON() usage correct in mm/nommu.c. Since there
are 2 lines even before 2.6.12, I am not able to find out the original
author, Cc Andrew as well.

Signed-off-by: Coly Li <bosong.ly@...bao.com>
Cc: David Howells <dhowells@...hat.com>
Cc: Christoph Hellwig <hch@....de>
Cc: Andrew Morton <akpm@...ux-foundation.org>
---
 mm/nommu.c |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/mm/nommu.c b/mm/nommu.c
index f59e142..eccff36 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -534,16 +534,16 @@ static noinline void validate_nommu_regions(void)
 		return;
 
 	last = rb_entry(lastp, struct vm_region, vm_rb);
-	BUG_ON(unlikely(last->vm_end <= last->vm_start));
-	BUG_ON(unlikely(last->vm_top < last->vm_end));
+	BUG_ON(last->vm_end <= last->vm_start);
+	BUG_ON(last->vm_top < last->vm_end);
 
 	while ((p = rb_next(lastp))) {
 		region = rb_entry(p, struct vm_region, vm_rb);
 		last = rb_entry(lastp, struct vm_region, vm_rb);
 
-		BUG_ON(unlikely(region->vm_end <= region->vm_start));
-		BUG_ON(unlikely(region->vm_top < region->vm_end));
-		BUG_ON(unlikely(region->vm_start < last->vm_top));
+		BUG_ON(region->vm_end <= region->vm_start);
+		BUG_ON(region->vm_top < region->vm_end);
+		BUG_ON(region->vm_start < last->vm_top);
 
 		lastp = p;
 	}
-- 
1.7.3.2

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