x86: fix off-by-one in find_next_zero_string
authorAndrew Hastings <abh@cray.com>
Wed, 17 Oct 2007 16:04:33 +0000 (18:04 +0200)
committerThomas Gleixner <tglx@inhelltoy.tec.linutronix.de>
Wed, 17 Oct 2007 18:15:22 +0000 (20:15 +0200)
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

index 24676609a6acbcf12ac2c29a3949b6f21abe199c..7445caf1b5ded2f12f8bd4ae01ed7d51917627d6 100644 (file)
@@ -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)) {