linux-kernel - Re: [PATCH] ext2:delete misused ext2_free

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Message-ID: <4C2BF5D9.8040100@gmail.com>
Date:	Thu, 01 Jul 2010 09:56:41 +0800
From:	Peter Pan <panweiping3@...il.com>
To:	Dan Carpenter <error27@...il.com>,
	Peter Pan <wppan@...flag-linux.com>, jack@...e.cz, hch@....de,
	viro@...iv.linux.org.uk, npiggin@...e.de, jblunck@...e.de,
	linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] ext2:delete misused ext2_free_blocks

On 07/01/2010 06:57 AM, Dan Carpenter wrote:
> On Wed, Jun 30, 2010 at 06:21:27PM +0800, Peter Pan wrote:
>    
>> if ext2_new_blocks returns error, no blocks need to be freed.
>>
>>      
> Hi Peter,
>
> Your patch isn't right.  The original code is OK as is.
>
> Are you seeing a kernel panic?  Perhaps we can help you fix it.
>    
Oh, I know that the original code is good now.
I didn't see a kernel panic, thank you for your guide.
> regards,
> dan carpenter
>
>    
>> Signed-off-by: Peter Pan<wppan@...flag-linux.com>
>> ---
>>   fs/ext2/inode.c |    4 ++--
>>   1 files changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
>> index 3675088..f858847 100644
>> --- a/fs/ext2/inode.c
>> +++ b/fs/ext2/inode.c
>> @@ -385,6 +385,8 @@ static int ext2_alloc_blocks(struct inode *inode,
>>   	ext2_fsblk_t current_block = 0;
>>   	int ret = 0;
>>
>> +	*err = -ENOSPC;
>> +
>>   	/*
>>   	 * Here we try to allocate the requested multiple blocks at once,
>>   	 * on a best-effort basis.
>> @@ -421,8 +423,6 @@ static int ext2_alloc_blocks(struct inode *inode,
>>   	*err = 0;
>>   	return ret;
>>   failed_out:
>> -	for (i = 0; i<index; i++)
>> -		ext2_free_blocks(inode, new_blocks[i], 1);
>>   	return ret;
>>   }
>>
>> -- 
>> 1.6.6
>>      
> --
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>    

Regards

-- 
Peter Pan
Red Flag Software Co.,Ltd

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