xfs: ensure that the inode uid/gid match values match the icdinode ones

Instead of only synchronizing the uid/gid values in xfs_setup_inode,
ensure that they always match to prepare for removing the icdinode
fields.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

fs/xfs/libxfs/xfs_inode_buf.c

@@ -223,7 +223,9 @@ xfs_inode_from_disk(
 
 	to->di_format = from->di_format;
 	to->di_uid = be32_to_cpu(from->di_uid);
+	inode->i_uid = xfs_uid_to_kuid(to->di_uid);
 	to->di_gid = be32_to_cpu(from->di_gid);
+	inode->i_gid = xfs_gid_to_kgid(to->di_gid);
 	to->di_flushiter = be16_to_cpu(from->di_flushiter);
 
 	/*

fs/xfs/xfs_icache.c

@@ -289,6 +289,8 @@ xfs_reinit_inode(
 	uint64_t	version = inode_peek_iversion(inode);
 	umode_t		mode = inode->i_mode;
 	dev_t		dev = inode->i_rdev;
+	kuid_t		uid = inode->i_uid;
+	kgid_t		gid = inode->i_gid;
 
 	error = inode_init_always(mp->m_super, inode);
 
@@ -297,6 +299,8 @@ xfs_reinit_inode(
 	inode_set_iversion_queried(inode, version);
 	inode->i_mode = mode;
 	inode->i_rdev = dev;
+	inode->i_uid = uid;
+	inode->i_gid = gid;
 	return error;
 }
 

fs/xfs/xfs_inode.c

@@ -812,15 +812,19 @@ xfs_ialloc(
 
 	inode->i_mode = mode;
 	set_nlink(inode, nlink);
-	ip->i_d.di_uid = xfs_kuid_to_uid(current_fsuid());
-	ip->i_d.di_gid = xfs_kgid_to_gid(current_fsgid());
+	inode->i_uid = current_fsuid();
+	ip->i_d.di_uid = xfs_kuid_to_uid(inode->i_uid);
 	inode->i_rdev = rdev;
 	ip->i_d.di_projid = prid;
 
 	if (pip && XFS_INHERIT_GID(pip)) {
+		inode->i_gid = VFS_I(pip)->i_gid;
 		ip->i_d.di_gid = pip->i_d.di_gid;
 		if ((VFS_I(pip)->i_mode & S_ISGID) && S_ISDIR(mode))
 			inode->i_mode |= S_ISGID;
+	} else {
+		inode->i_gid = current_fsgid();
+		ip->i_d.di_gid = xfs_kgid_to_gid(inode->i_gid);
 	}
 
 	/*

fs/xfs/xfs_iops.c

@@ -1304,9 +1304,6 @@ xfs_setup_inode(
 	/* make the inode look hashed for the writeback code */
 	inode_fake_hash(inode);
 
-	inode->i_uid    = xfs_uid_to_kuid(ip->i_d.di_uid);
-	inode->i_gid    = xfs_gid_to_kgid(ip->i_d.di_gid);
-
 	i_size_write(inode, ip->i_d.di_size);
 	xfs_diflags_to_iflags(inode, ip);