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/ufs/file.c b/fs/ufs/file.c
index d84762f..a8962ce 100644
--- a/fs/ufs/file.c
+++ b/fs/ufs/file.c
@@ -24,6 +24,7 @@
  */
 
 #include <linux/fs.h>
+#include <linux/quotaops.h>
 
 #include "ufs_fs.h"
 #include "ufs.h"