linux-ext4 - [PATCH] fs/ext4/extents_status.c: fix 64-bit number truncation bug

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Date:	Mon, 31 Mar 2014 21:16:49 +0800
From:	Chen Gang <gang.chen.5i5j@...il.com>
To:	tytso@....edu, adilger.kernel@...ger.ca
CC:	linux-ext4@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	gxt@...c.pku.edu.cn
Subject: [PATCH] fs/ext4/extents_status.c: fix 64-bit number truncation bug

'0x7FDEADBEEF' will be truncated to 32-bit number under unicore32. Need
append 'ULL' for it.

The related warning (with allmodconfig under unicore32):

    CC [M]  fs/ext4/extents_status.o
  fs/ext4/extents_status.c: In function ‘__es_remove_extent’:
  fs/ext4/extents_status.c:813: warning: integer constant is too large for ‘long’ type


Signed-off-by: Chen Gang <gang.chen.5i5j@...il.com>
---
 fs/ext4/extents_status.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c
index 0a014a7..0ebc212 100644
--- a/fs/ext4/extents_status.c
+++ b/fs/ext4/extents_status.c
@@ -810,7 +810,7 @@ retry:
 
 			newes.es_lblk = end + 1;
 			newes.es_len = len2;
-			block = 0x7FDEADBEEF;
+			block = 0x7FDEADBEEFULL;
 			if (ext4_es_is_written(&orig_es) ||
 			    ext4_es_is_unwritten(&orig_es))
 				block = ext4_es_pblock(&orig_es) +
-- 
1.7.9.5
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