cgroup quota: validate and charge inode quota for XFS

index ce9268a..4824eef 100644
@@ -50,6 +50,8 @@
 #include "xfs_vnodeops.h"
 #include "xfs_trace.h"
 
+#include <linux/quota_cgroup.h>
+
 /*
  * The maximum pathlen is 1024 bytes. Since the minimum file system
  * blocksize is 512 bytes, we can get a max of 2 extents back from

@@ -853,6 +855,10 @@ xfs_create(
 	else
 		prid = XFS_PROJID_DEFAULT;
 
+	error = quota_cgroup_validate_pquota(QUOTA_NEW_INODE, prid, 1);
+	if (error)
+		return error;
+
 	/*
 	 * Make sure that we have allocated dquot(s) on disk.
 	 */

@@ -983,6 +989,8 @@ xfs_create(
 	 */
 	xfs_qm_vop_create_dqattach(tp, ip, udqp, gdqp);
 
+	quota_cgroup_charge_pquota(QUOTA_NEW_INODE, prid, 1);
+
 	error = xfs_bmap_finish(&tp, &free_list, &committed);
 	if (error)
 		goto out_bmap_cancel;

@@ -1354,6 +1362,8 @@ xfs_remove(
 	if (!is_dir && link_zero && xfs_inode_is_filestream(ip))
 		xfs_filestream_deassociate(ip);
 
+	quota_cgroup_charge_pquota(QUOTA_DROP_INODE, xfs_get_projid(ip), 1);
+
 	return 0;
 
  out_bmap_cancel: