From 2e10e2f2e5a800a54ad2f16dfdd8c034e005958b Mon Sep 17 00:00:00 2001
From: Yongqiang Yang <xiaoqiangnk@gmail.com>
Date: Tue, 3 Jan 2012 23:41:39 -0500
Subject: [PATCH] ext4: add a function which updates the super block during
 online resizing

This patch adds a function named ext4_update_super() which updates
super block so the newly created block groups are visible to the file
system.  This code is copied from ext4_group_add().

The function will be used by new resize implementation.

Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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