include: linux/fs.h: put declarations in __KERNEL__

include/linux/fs.h contains externs for a bunch of variables.  That obviously
belongs under ifdef __KERNEL__.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

include/linux/fs.h

@@ -21,7 +21,6 @@
 
 /* Fixed constants first: */
 #undef NR_OPEN
-extern int sysctl_nr_open;
 #define INR_OPEN 1024		/* Initial setting for nfile rlimits */
 
 #define BLOCK_SIZE_BITS 10
@@ -38,21 +37,13 @@ struct files_stat_struct {
 	int nr_free_files;	/* read only */
 	int max_files;		/* tunable */
 };
-extern struct files_stat_struct files_stat;
-extern int get_max_files(void);
 
 struct inodes_stat_t {
 	int nr_inodes;
 	int nr_unused;
 	int dummy[5];		/* padding for sysctl ABI compatibility */
 };
-extern struct inodes_stat_t inodes_stat;
 
-extern int leases_enable, lease_break_time;
-
-#ifdef CONFIG_DNOTIFY
-extern int dir_notify_enable;
-#endif
 
 #define NR_FILE  8192	/* this can well be larger on a larger system */
 
@@ -330,6 +321,15 @@ extern void __init inode_init(void);
 extern void __init inode_init_early(void);
 extern void __init files_init(unsigned long);
 
+extern struct files_stat_struct files_stat;
+extern int get_max_files(void);
+extern int sysctl_nr_open;
+extern struct inodes_stat_t inodes_stat;
+extern int leases_enable, lease_break_time;
+#ifdef CONFIG_DNOTIFY
+extern int dir_notify_enable;
+#endif
+
 struct buffer_head;
 typedef int (get_block_t)(struct inode *inode, sector_t iblock,
 			struct buffer_head *bh_result, int create);