linux-ext4 - [PATCH v2 10/12] e4defrag: Use EXT2_SUPER_MAGIC instead of EXT4_SUPER

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Message-ID: <4E4B7230.50103@sx.jp.nec.com>
Date:	Wed, 17 Aug 2011 16:48:00 +0900
From:	Kazuya Mio <k-mio@...jp.nec.com>
To:	ext4 <linux-ext4@...r.kernel.org>, Theodore Tso <tytso@....edu>
Subject: [PATCH v2 10/12] e4defrag: Use EXT2_SUPER_MAGIC instead of EXT4_SUPER_MAGIC

e2fsprogs has EXT2_SUPER_MAGIC defined for the magic number of
ext4 filesystem. e4defrag uses it instead of EXT4_SUPER_MAGIC.

Signed-off-by: Kazuya Mio <k-mio@...jp.nec.com>
---
 misc/e4defrag.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/misc/e4defrag.c b/misc/e4defrag.c
index f0a843e..ec1b15a 100644
--- a/misc/e4defrag.c
+++ b/misc/e4defrag.c
@@ -92,9 +92,6 @@
 #define FS_EXT4			"ext4"
 #define ROOT_UID		0
 
-/* Magic number for ext4 */
-#define EXT4_SUPER_MAGIC	0xEF53
-
 /* The following macro is used for ioctl FS_IOC_FIEMAP
  * EXTENT_MAX_COUNT:	the maximum number of extents for exchanging between
  *			kernel-space and user-space per ioctl
@@ -300,7 +297,7 @@ static int is_ext4(const char *file)
 		return -1;
 	}
 
-	if (fsbuf.f_type != EXT4_SUPER_MAGIC) {
+	if (fsbuf.f_type != EXT2_SUPER_MAGIC) {
 		PRINT_ERR_MSG(NGMSG_EXT4);
 		return -1;
 	}
--
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