dquot: cleanup dquot initialize routine

Get rid of the initialize dquot operation - it is now always called from
the filesystem and if a filesystem really needs it's own (which none
currently does) it can just call into it's own routine directly.

Rename the now static low-level dquot_initialize helper to __dquot_initialize
and vfs_dq_init to dquot_initialize to have a consistent namespace.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index 06995cb..b8671a5 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -35,7 +35,7 @@
 	int err;
 
 	if (!is_bad_inode(inode))
-		vfs_dq_init(inode);
+		dquot_initialize(inode);
 
 	truncate_inode_pages(&inode->i_data, 0);
 
@@ -1768,7 +1768,7 @@
 
 	BUG_ON(!th->t_trans_id);
 
-	vfs_dq_init(inode);
+	dquot_initialize(inode);
 	err = dquot_alloc_inode(inode);
 	if (err)
 		goto out_end_trans;
@@ -3076,7 +3076,7 @@
 
 	depth = reiserfs_write_lock_once(inode->i_sb);
 	if (attr->ia_valid & ATTR_SIZE) {
-		vfs_dq_init(inode);
+		dquot_initialize(inode);
 
 		/* version 2 items will be caught by the s_maxbytes check
 		 ** done for us in vmtruncate