vfs: Use lowercase names of quota functions

Use lowercase names of quota functions instead of old uppercase ones.

Signed-off-by: Jan Kara <jack@suse.cz>
CC: Alexander Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/attr.c b/fs/attr.c
index f436019..9fe1b1b 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -173,7 +173,8 @@
 		if (!error) {
 			if ((ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) ||
 			    (ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid))
-				error = DQUOT_TRANSFER(inode, attr) ? -EDQUOT : 0;
+				error = vfs_dq_transfer(inode, attr) ?
+					-EDQUOT : 0;
 			if (!error)
 				error = inode_setattr(inode, attr);
 		}