reiserfs: don't compile procfs.o at all if no support

* small define cleanup in header
* fix #ifdeffery in procfs.c via Kconfig

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/reiserfs/Makefile b/fs/reiserfs/Makefile
index 6a9e30c..792b3cb 100644
--- a/fs/reiserfs/Makefile
+++ b/fs/reiserfs/Makefile
@@ -7,7 +7,11 @@
 reiserfs-objs := bitmap.o do_balan.o namei.o inode.o file.o dir.o fix_node.o \
 		 super.o prints.o objectid.o lbalance.o ibalance.o stree.o \
 		 hashes.o tail_conversion.o journal.o resize.o \
-		 item_ops.o ioctl.o procfs.o xattr.o lock.o
+		 item_ops.o ioctl.o xattr.o lock.o
+
+ifeq ($(CONFIG_REISERFS_PROC_INFO),y)
+reiserfs-objs += procfs.o
+endif
 
 ifeq ($(CONFIG_REISERFS_FS_XATTR),y)
 reiserfs-objs += xattr_user.o xattr_trusted.o
diff --git a/fs/reiserfs/procfs.c b/fs/reiserfs/procfs.c
index 0ebb116..7a99811 100644
--- a/fs/reiserfs/procfs.c
+++ b/fs/reiserfs/procfs.c
@@ -17,8 +17,6 @@
 #include <linux/init.h>
 #include <linux/proc_fs.h>
 
-#ifdef CONFIG_REISERFS_PROC_INFO
-
 /*
  * LOCKING:
  *
@@ -551,30 +549,6 @@
 	}
 	return 0;
 }
-
-/* REISERFS_PROC_INFO */
-#else
-
-int reiserfs_proc_info_init(struct super_block *sb)
-{
-	return 0;
-}
-int reiserfs_proc_info_done(struct super_block *sb)
-{
-	return 0;
-}
-
-int reiserfs_proc_info_global_init(void)
-{
-	return 0;
-}
-int reiserfs_proc_info_global_done(void)
-{
-	return 0;
-}
-/* REISERFS_PROC_INFO */
-#endif
-
 /*
  * Revision 1.1.8.2  2001/07/15 17:08:42  god
  *  . use get_super() in procfs.c
diff --git a/include/linux/reiserfs_fs.h b/include/linux/reiserfs_fs.h
index f65ed0d..c96c185 100644
--- a/include/linux/reiserfs_fs.h
+++ b/include/linux/reiserfs_fs.h
@@ -2051,21 +2051,13 @@
 int search_by_entry_key(struct super_block *sb, const struct cpu_key *key,
 			struct treepath *path, struct reiserfs_dir_entry *de);
 struct dentry *reiserfs_get_parent(struct dentry *);
-/* procfs.c */
 
-#if defined( CONFIG_PROC_FS ) && defined( CONFIG_REISERFS_PROC_INFO )
-#define REISERFS_PROC_INFO
-#else
-#undef REISERFS_PROC_INFO
-#endif
-
+#ifdef CONFIG_REISERFS_PROC_INFO
 int reiserfs_proc_info_init(struct super_block *sb);
 int reiserfs_proc_info_done(struct super_block *sb);
 int reiserfs_proc_info_global_init(void);
 int reiserfs_proc_info_global_done(void);
 
-#if defined( REISERFS_PROC_INFO )
-
 #define PROC_EXP( e )   e
 
 #define __PINFO( sb ) REISERFS_SB(sb) -> s_proc_info_data
@@ -2079,6 +2071,26 @@
     PROC_INFO_ADD( sb, free_at[ ( level ) ], B_FREE_SPACE( bh ) );	\
     PROC_INFO_ADD( sb, items_at[ ( level ) ], B_NR_ITEMS( bh ) )
 #else
+static inline int reiserfs_proc_info_init(struct super_block *sb)
+{
+	return 0;
+}
+
+static inline int reiserfs_proc_info_done(struct super_block *sb)
+{
+	return 0;
+}
+
+static inline int reiserfs_proc_info_global_init(void)
+{
+	return 0;
+}
+
+static inline int reiserfs_proc_info_global_done(void)
+{
+	return 0;
+}
+
 #define PROC_EXP( e )
 #define VOID_V ( ( void ) 0 )
 #define PROC_INFO_MAX( sb, field, value ) VOID_V