ramfs: move RAMFS_MAGIC to include/linux/magic.h

initramfs userspace likes to use this magic number.

Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Signed-off-by: Nmaximilian attems <max@stro.at>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

fs/ramfs/inode.c

@@ -34,12 +34,10 @@
 #include <linux/ramfs.h>
 #include <linux/sched.h>
 #include <linux/parser.h>
+#include <linux/magic.h>
 #include <asm/uaccess.h>
 #include "internal.h"
 
-/* some random number */
-#define RAMFS_MAGIC	0x858458f6
-
 #define RAMFS_DEFAULT_MODE	0755
 
 static const struct super_operations ramfs_ops;

include/linux/magic.h

@@ -12,6 +12,7 @@
 #define SYSFS_MAGIC		0x62656572
 #define SECURITYFS_MAGIC	0x73636673
 #define SELINUX_MAGIC		0xf97cff8c
+#define RAMFS_MAGIC		0x858458f6	/* some random number */
 #define TMPFS_MAGIC		0x01021994
 #define HUGETLBFS_MAGIC 	0x958458f6	/* some random number */
 #define SQUASHFS_MAGIC		0x73717368