From de5f5e33f4be031d23477958808d09f9745d437f Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Wed, 23 May 2012 02:10:26 +0200
Subject: Fix find_next_zero_bit when no bit is available

* ext2fs/bitmap.c (find_next_zero_bit): Check whether TMP has a bit set before
calling ffz.
---
 ext2fs/bitmap.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'ext2fs')

diff --git a/ext2fs/bitmap.c b/ext2fs/bitmap.c
index e512d011..92850232 100644
--- a/ext2fs/bitmap.c
+++ b/ext2fs/bitmap.c
@@ -91,6 +91,8 @@ find_next_zero_bit(void *addr, unsigned long size, unsigned long offset)
 
 found_first:
   tmp |= ~0UL << size;
+  if (!~tmp)
+    return result + size;
 found_middle:
   return result + ffz(tmp);
 }
-- 
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