fs: remove the unused mempages parameter

Since the mempages parameter is actually not used, they should be removed.

Now there is only files_init use the mempages parameter,

 	files_init(mempages);

but I don't think the adaptation to mempages in files_init is really
useful; and if files_init also changed to the prototype void (*func)(void),
the wrapper vfs_caches_init would also not need the mempages parameter.
Signed-off-by: Denis Cheng <crquan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/dcache.c

@@ -2108,7 +2108,7 @@ static void __init dcache_init_early(void)
 		INIT_HLIST_HEAD(&dentry_hashtable[loop]);
 }
 
-static void __init dcache_init(unsigned long mempages)
+static void __init dcache_init(void)
 {
 	int loop;
 
@@ -2170,10 +2170,10 @@ void __init vfs_caches_init(unsigned long mempages)
 	filp_cachep = kmem_cache_create("filp", sizeof(struct file), 0,
 			SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
 
-	dcache_init(mempages);
-	inode_init(mempages);
+	dcache_init();
+	inode_init();
 	files_init(mempages);
-	mnt_init(mempages);
+	mnt_init();
 	bdev_cache_init();
 	chrdev_init();
 }

fs/inode.c

@@ -1396,7 +1396,7 @@ void __init inode_init_early(void)
 		INIT_HLIST_HEAD(&inode_hashtable[loop]);
 }
 
-void __init inode_init(unsigned long mempages)
+void __init inode_init(void)
 {
 	int loop;
 

fs/namespace.c

@@ -1791,7 +1791,7 @@ static void __init init_mount_tree(void)
 	set_fs_root(current->fs, ns->root, ns->root->mnt_root);
 }
 
-void __init mnt_init(unsigned long mempages)
+void __init mnt_init(void)
 {
 	struct list_head *d;
 	unsigned int nr_hash;

include/linux/fs.h

@@ -300,9 +300,9 @@ struct kstatfs;
 struct vm_area_struct;
 struct vfsmount;
 
-extern void __init inode_init(unsigned long);
+extern void __init inode_init(void);
 extern void __init inode_init_early(void);
-extern void __init mnt_init(unsigned long);
+extern void __init mnt_init(void);
 extern void __init files_init(unsigned long);
 
 struct buffer_head;