linux-kernel - [PATCH] ext4: remove redundant offset check in move_extents.c/mext_check

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Date:	Mon, 23 Jul 2012 16:03:14 +0800
From:	Wang Sheng-Hui <shhuiw@...il.com>
To:	Andreas Dilger <adilger.kernel@...ger.ca>,
	Theodore Ts'o <tytso@....edu>,
	ext4 development <linux-ext4@...r.kernel.org>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] ext4: remove redundant offset check in move_extents.c/mext_check_arguments

In the check code above, if orig_start != donor_start, we would
return -EINVAL. So here, orig_start should be equal with donor_start.
Remove the redundant check here.

Signed-off-by: Wang Sheng-Hui <shhuiw@...il.com>
---
 fs/ext4/move_extent.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c
index c5826c6..8383257 100644
--- a/fs/ext4/move_extent.c
+++ b/fs/ext4/move_extent.c
@@ -1002,7 +1002,6 @@ mext_check_arguments(struct inode *orig_inode,
 	}
 
 	if ((orig_start >= EXT_MAX_BLOCKS) ||
-	    (donor_start >= EXT_MAX_BLOCKS) ||
 	    (*len > EXT_MAX_BLOCKS) ||
 	    (orig_start + *len >= EXT_MAX_BLOCKS))  {
 		ext4_debug("ext4 move extent: Can't handle over [%u] blocks "
-- 
1.7.1

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