Btrfs devel - Jan 2009 - [PATCH] btrfs & squashfs: Move btrfs and squashfsto's magic number to <linux/magic.h>

Use the standard magic.h for btrfs and squashfs.

Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com>
---
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 0a14b49..7256cf2 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -38,6 +38,7 @@
 #include <linux/namei.h>
 #include <linux/miscdevice.h>
 #include <linux/version.h>
+#include <linux/magic.h>
 #include "compat.h"
 #include "ctree.h"
 #include "disk-io.h"
@@ -51,7 +52,6 @@
 #include "export.h"
 #include "compression.h"
 
-#define BTRFS_SUPER_MAGIC 0x9123683E
 
 static struct super_operations btrfs_super_ops;
 
diff --git a/fs/squashfs/squashfs_fs.h b/fs/squashfs/squashfs_fs.h
index 6840da1..283daaf 100644
--- a/fs/squashfs/squashfs_fs.h
+++ b/fs/squashfs/squashfs_fs.h
@@ -26,7 +26,6 @@
 #define SQUASHFS_CACHED_FRAGMENTS	CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE
 #define SQUASHFS_MAJOR			4
 #define SQUASHFS_MINOR			0
-#define SQUASHFS_MAGIC			0x73717368
 #define SQUASHFS_START			0
 
 /* size of metadata (inode and directory) blocks */
diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c
index a0466d7..071df5b 100644
--- a/fs/squashfs/super.c
+++ b/fs/squashfs/super.c
@@ -35,6 +35,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/zlib.h>
+#include <linux/magic.h>
 
 #include "squashfs_fs.h"
 #include "squashfs_fs_sb.h"
diff --git a/include/linux/magic.h b/include/linux/magic.h
index 439f6f3..0b4df7e 100644
--- a/include/linux/magic.h
+++ b/include/linux/magic.h
@@ -10,11 +10,13 @@
 #define SYSFS_MAGIC		0x62656572
 #define SECURITYFS_MAGIC	0x73636673
 #define TMPFS_MAGIC		0x01021994
+#define SQUASHFS_MAGIC		0x73717368
 #define EFS_SUPER_MAGIC		0x414A53
 #define EXT2_SUPER_MAGIC	0xEF53
 #define EXT3_SUPER_MAGIC	0xEF53
 #define XENFS_SUPER_MAGIC	0xabba1974
 #define EXT4_SUPER_MAGIC	0xEF53
+#define BTRFS_SUPER_MAGIC	0x9123683E
 #define HPFS_SUPER_MAGIC	0xf995e849
 #define ISOFS_SUPER_MAGIC	0x9660
 #define JFFS2_SUPER_MAGIC	0x72b6

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On Mon, Jan 12, 2009 at 1:52 AM, Qinghuang Feng <qhfeng.kernel@gmail.com>
wrote:
> Use the standard magic.h for btrfs and squashfs.
>
The patch can''t be split to two pieces, otherwise it will conflict
because magic.h would be
modified twice.
So I also send it to akpm, he must have a good idea.
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