[GFS2] Macros removal in gfs2.h

As suggested by Pekka Enberg <penberg@cs.helsinki.fi>.

The DIV_RU macro is renamed DIV_ROUND_UP and and moved to kernel.h
The other macros are gone from gfs2.h as (although not requested
by Pekka Enberg) are a number of included header file which are now
included individually. The inode number comparison function is
now an inline function.

The DT2IF and IF2DT may be addressed in a future patch.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

fs/gfs2/gfs2.h

@@ -10,13 +10,6 @@
 #ifndef __GFS2_DOT_H__
 #define __GFS2_DOT_H__
 
-#include <linux/gfs2_ondisk.h>
-
-#include "lm_interface.h"
-#include "lvb.h"
-#include "incore.h"
-#include "util.h"
-
 enum {
 	NO_CREATE = 0,
 	CREATE = 1,
@@ -32,29 +25,7 @@ enum {
 	FORCE = 1,
 };
 
-/*  Divide num by den.  Round up if there is a remainder.  */
-#define DIV_RU(num, den) (((num) + (den) - 1) / (den))
-
 #define GFS2_FAST_NAME_SIZE 8
 
-#define get_v2sdp(sb) ((struct gfs2_sbd *)(sb)->s_fs_info)
-#define set_v2sdp(sb, sdp) (sb)->s_fs_info = (sdp)
-#define get_v2ip(inode) ((struct gfs2_inode *)(inode)->u.generic_ip)
-#define set_v2ip(inode, ip) (inode)->u.generic_ip = (ip)
-#define get_v2fp(file) ((struct gfs2_file *)(file)->private_data)
-#define set_v2fp(file, fp) (file)->private_data = (fp)
-#define get_v2bd(bh) ((struct gfs2_bufdata *)(bh)->b_private)
-#define set_v2bd(bh, bd) (bh)->b_private = (bd)
-
-#define get_transaction ((struct gfs2_trans *)(current->journal_info))
-#define set_transaction(tr) (current->journal_info) = (tr)
-
-#define get_gl2ip(gl) ((struct gfs2_inode *)(gl)->gl_object)
-#define set_gl2ip(gl, ip) (gl)->gl_object = (ip)
-#define get_gl2rgd(gl) ((struct gfs2_rgrpd *)(gl)->gl_object)
-#define set_gl2rgd(gl, rgd) (gl)->gl_object = (rgd)
-#define get_gl2gl(gl) ((struct gfs2_glock *)(gl)->gl_object)
-#define set_gl2gl(gl, gl2) (gl)->gl_object = (gl2)
-
 #endif /* __GFS2_DOT_H__ */