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/ocfs2/file.c b/fs/ocfs2/file.c
index 126198f..3641052 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -108,7 +108,7 @@
 		   file->f_path.dentry->d_name.len, file->f_path.dentry->d_name.name);
 
 	if (file->f_mode & FMODE_WRITE)
-		vfs_dq_init(inode);
+		dquot_initialize(inode);
 
 	spin_lock(&oi->ip_lock);
 
@@ -980,7 +980,7 @@
 
 	size_change = S_ISREG(inode->i_mode) && attr->ia_valid & ATTR_SIZE;
 	if (size_change) {
-		vfs_dq_init(inode);
+		dquot_initialize(inode);
 
 		status = ocfs2_rw_lock(inode, 1);
 		if (status < 0) {