From 801916c1b369b637ce799e6c71a94963ff63df79 Mon Sep 17 00:00:00 2001
From: Andrew Hastings <abh@cray.com>
Date: Wed, 17 Oct 2007 18:04:33 +0200
Subject: [PATCH] x86: fix off-by-one in find_next_zero_string
Fix an off-by-one error in find_next_zero_string which prevents
allocating the last bit.
[ tglx: arch/x86 adaptation ]
Signed-off-by: Andrew Hastings <abh@cray.com> on behalf of Cray Inc.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/x86/lib/bitstr_64.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/lib/bitstr_64.c b/arch/x86/lib/bitstr_64.c
index 24676609a6ac..7445caf1b5de 100644
--- a/arch/x86/lib/bitstr_64.c
+++ b/arch/x86/lib/bitstr_64.c
@@ -14,7 +14,7 @@ find_next_zero_string(unsigned long *bitmap, long start, long nbits, int len)
/* could test bitsliced, but it's hardly worth it */
end = n+len;
- if (end >= nbits)
+ if (end > nbits)
return -1;
for (i = n+1; i < end; i++) {
if (test_bit(i, bitmap)) {