From: Yongqiang Yang <xiaoqiangnk@gmail.com>
Date: Wed, 14 Dec 2011 03:13:42 +0000 (-0500)
Subject: ext4: remove a wrong BUG_ON in ext4_ext_convert_to_initialized
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5b5ffa49d4bbb8ca4c41c094261660264f16bd20;p=linux-beck.git

ext4: remove a wrong BUG_ON in ext4_ext_convert_to_initialized

If a file is fallocated on a hole, map->m_lblk + map->m_len may be greater
than ee_block + ee_len.

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

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 61cdb97f338c..607b1557d292 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2955,7 +2955,6 @@ static int ext4_ext_convert_to_initialized(handle_t *handle,
 	/* Pre-conditions */
 	BUG_ON(!ext4_ext_is_uninitialized(ex));
 	BUG_ON(!in_range(map->m_lblk, ee_block, ee_len));
-	BUG_ON(map->m_lblk + map->m_len > ee_block + ee_len);
 
 	/*
 	 * Attempt to transfer newly initialized blocks from the currently