xfs: convert kuid_t to/from uid_t for internal structures

Use uint32 from init_user_ns for xfs internal uid/gid
representation in xfs_icdinode, xfs_dqid_t.

Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Dwight Engen <dwight.engen@oracle.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 2f41a1a..8750cdb 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -690,8 +690,8 @@
 	ip->i_d.di_onlink = 0;
 	ip->i_d.di_nlink = nlink;
 	ASSERT(ip->i_d.di_nlink == nlink);
-	ip->i_d.di_uid = current_fsuid();
-	ip->i_d.di_gid = current_fsgid();
+	ip->i_d.di_uid = xfs_kuid_to_uid(current_fsuid());
+	ip->i_d.di_gid = xfs_kgid_to_gid(current_fsgid());
 	xfs_set_projid(ip, prid);
 	memset(&(ip->i_d.di_pad[0]), 0, sizeof(ip->i_d.di_pad));
 
@@ -730,7 +730,7 @@
 	 */
 	if ((irix_sgid_inherit) &&
 	    (ip->i_d.di_mode & S_ISGID) &&
-	    (!in_group_p((gid_t)ip->i_d.di_gid))) {
+	    (!in_group_p(xfs_gid_to_kgid(ip->i_d.di_gid)))) {
 		ip->i_d.di_mode &= ~S_ISGID;
 	}
 
@@ -1178,7 +1178,8 @@
 	/*
 	 * Make sure that we have allocated dquot(s) on disk.
 	 */
-	error = xfs_qm_vop_dqalloc(dp, current_fsuid(), current_fsgid(), prid,
+	error = xfs_qm_vop_dqalloc(dp, xfs_kuid_to_uid(current_fsuid()),
+					xfs_kgid_to_gid(current_fsgid()), prid,
 					XFS_QMOPT_QUOTALL | XFS_QMOPT_INHERIT,
 					&udqp, &gdqp, &pdqp);
 	if (error)