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/ext2/namei.c b/fs/ext2/namei.c
index 5923df7b..71efb0e 100644
--- a/fs/ext2/namei.c
+++ b/fs/ext2/namei.c
@@ -102,7 +102,7 @@
 {
 	struct inode *inode;
 
-	vfs_dq_init(dir);
+	dquot_initialize(dir);
 
 	inode = ext2_new_inode(dir, mode);
 	if (IS_ERR(inode))
@@ -131,7 +131,7 @@
 	if (!new_valid_dev(rdev))
 		return -EINVAL;
 
-	vfs_dq_init(dir);
+	dquot_initialize(dir);
 
 	inode = ext2_new_inode (dir, mode);
 	err = PTR_ERR(inode);
@@ -157,7 +157,7 @@
 	if (l > sb->s_blocksize)
 		goto out;
 
-	vfs_dq_init(dir);
+	dquot_initialize(dir);
 
 	inode = ext2_new_inode (dir, S_IFLNK | S_IRWXUGO);
 	err = PTR_ERR(inode);
@@ -202,7 +202,7 @@
 	if (inode->i_nlink >= EXT2_LINK_MAX)
 		return -EMLINK;
 
-	vfs_dq_init(dir);
+	dquot_initialize(dir);
 
 	inode->i_ctime = CURRENT_TIME_SEC;
 	inode_inc_link_count(inode);
@@ -226,7 +226,7 @@
 	if (dir->i_nlink >= EXT2_LINK_MAX)
 		goto out;
 
-	vfs_dq_init(dir);
+	dquot_initialize(dir);
 
 	inode_inc_link_count(dir);
 
@@ -274,7 +274,7 @@
 	struct page * page;
 	int err = -ENOENT;
 
-	vfs_dq_init(dir);
+	dquot_initialize(dir);
 
 	de = ext2_find_entry (dir, &dentry->d_name, &page);
 	if (!de)
@@ -318,8 +318,8 @@
 	struct ext2_dir_entry_2 * old_de;
 	int err = -ENOENT;
 
-	vfs_dq_init(old_dir);
-	vfs_dq_init(new_dir);
+	dquot_initialize(old_dir);
+	dquot_initialize(new_dir);
 
 	old_de = ext2_find_entry (old_dir, &old_dentry->d_name, &old_page);
 	if (!old_de)