From b4df2030858bde986cb6ff2e4b45945f84649e32 Mon Sep 17 00:00:00 2001
From: Theodore Ts'o <tytso@mit.edu>
Date: Wed, 13 Aug 2008 21:44:34 -0400
Subject: [PATCH] ext4: Fix potential truncate BUG due to i_prealloc_list being
 non-empty

We need to call ext4_discard_reservation() earlier in ext4_truncate(),
to avoid a BUG() in ext4_mb_return_to_preallocation(), which is called
(ultimately) by ext4_free_blocks().  So we must ditch the blocks on
i_prealloc_list before we start freeing the data blocks.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---
Reading git-format-patch failed