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/ext4/namei.c b/fs/ext4/namei.c
index 20f55c2..7f3d2d7 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -1766,7 +1766,7 @@
 	struct inode *inode;
 	int err, retries = 0;
 
-	vfs_dq_init(dir);
+	dquot_initialize(dir);
 
 retry:
 	handle = ext4_journal_start(dir, EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +
@@ -1802,7 +1802,7 @@
 	if (!new_valid_dev(rdev))
 		return -EINVAL;
 
-	vfs_dq_init(dir);
+	dquot_initialize(dir);
 
 retry:
 	handle = ext4_journal_start(dir, EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +
@@ -1841,7 +1841,7 @@
 	if (EXT4_DIR_LINK_MAX(dir))
 		return -EMLINK;
 
-	vfs_dq_init(dir);
+	dquot_initialize(dir);
 
 retry:
 	handle = ext4_journal_start(dir, EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +
@@ -2142,8 +2142,8 @@
 
 	/* Initialize quotas before so that eventual writes go in
 	 * separate transaction */
-	vfs_dq_init(dir);
-	vfs_dq_init(dentry->d_inode);
+	dquot_initialize(dir);
+	dquot_initialize(dentry->d_inode);
 
 	handle = ext4_journal_start(dir, EXT4_DELETE_TRANS_BLOCKS(dir->i_sb));
 	if (IS_ERR(handle))
@@ -2203,8 +2203,8 @@
 
 	/* Initialize quotas before so that eventual writes go
 	 * in separate transaction */
-	vfs_dq_init(dir);
-	vfs_dq_init(dentry->d_inode);
+	dquot_initialize(dir);
+	dquot_initialize(dentry->d_inode);
 
 	handle = ext4_journal_start(dir, EXT4_DELETE_TRANS_BLOCKS(dir->i_sb));
 	if (IS_ERR(handle))
@@ -2260,7 +2260,7 @@
 	if (l > dir->i_sb->s_blocksize)
 		return -ENAMETOOLONG;
 
-	vfs_dq_init(dir);
+	dquot_initialize(dir);
 
 retry:
 	handle = ext4_journal_start(dir, EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +
@@ -2320,7 +2320,7 @@
 	if (inode->i_nlink >= EXT4_LINK_MAX)
 		return -EMLINK;
 
-	vfs_dq_init(dir);
+	dquot_initialize(dir);
 
 	/*
 	 * Return -ENOENT if we've raced with unlink and i_nlink is 0.  Doing
@@ -2372,15 +2372,15 @@
 	struct ext4_dir_entry_2 *old_de, *new_de;
 	int retval, force_da_alloc = 0;
 
-	vfs_dq_init(old_dir);
-	vfs_dq_init(new_dir);
+	dquot_initialize(old_dir);
+	dquot_initialize(new_dir);
 
 	old_bh = new_bh = dir_bh = NULL;
 
 	/* Initialize quotas before so that eventual writes go
 	 * in separate transaction */
 	if (new_dentry->d_inode)
-		vfs_dq_init(new_dentry->d_inode);
+		dquot_initialize(new_dentry->d_inode);
 	handle = ext4_journal_start(old_dir, 2 *
 					EXT4_DATA_TRANS_BLOCKS(old_dir->i_sb) +
 					EXT4_INDEX_EXTRA_TRANS_BLOCKS + 2);