[PATCH 1/6] mm: use BUG_ON correctly in nommu.c

Coly Li
2011-01-26T18:23:44Z

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@taobao.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Andrew Morton <akpm@linux-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