linux-kernel - Re: [PATCH] f2fs: fix recover orphan inodes

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Message-ID: <20150225230407.GA7267@kernel>
Date:	Thu, 26 Feb 2015 07:04:07 +0800
From:	Wanpeng Li <wanpeng.li@...ux.intel.com>
To:	Jaegeuk Kim <jaegeuk@...nel.org>
Cc:	Changman Lee <cm224.lee@...sung.com>,
	linux-f2fs-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org,
	Wanpeng Li <wanpeng.li@...ux.intel.com>
Subject: Re: [PATCH] f2fs: fix recover orphan inodes

Hi Jaegeuk,
On Wed, Feb 25, 2015 at 10:35:23AM -0800, Jaegeuk Kim wrote:
>Hi Wanpeng,
>
>On Wed, Feb 25, 2015 at 12:53:37PM +0800, Wanpeng Li wrote:
>> recover_orphan_inodes is used to recover orphan inodes, the meta pages 
>> which readahead should be orphan_blkaddr - start_blk instead of orphan_blkaddr.
>> This patch fix it.
>> 
>> Signed-off-by: Wanpeng Li <wanpeng.li@...ux.intel.com>
>> ---
>>  fs/f2fs/checkpoint.c | 4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
>> 
>> diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
>> index e6c271f..0f42ff3 100644
>> --- a/fs/f2fs/checkpoint.c
>> +++ b/fs/f2fs/checkpoint.c
>> @@ -468,9 +468,9 @@ void recover_orphan_inodes(struct f2fs_sb_info *sbi)
>>  		le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
>
>Actually it seems the name, orphan_blkaddr, was wrong.
>That should be orphan_blocks which is no need to fix like this.
>
>Instead, I found there is another bug below.
>
>>  	orphan_blkaddr = __start_sum_addr(sbi) - 1;
>        orphan_blocks = __start_sum_addr(sbi) - 1 - 
>			le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);

Indeed, I will send a patch to fix it.

>
>It may help to define a macro to get cp_payload.
>

Will do. Thanks for your help. ;-)

Regards,
Wanpeng Li 

>>  
>> -	ra_meta_pages(sbi, start_blk, orphan_blkaddr, META_CP);
>> +	ra_meta_pages(sbi, start_blk, orphan_blkaddr - start_blk, META_CP);
>
>The orphan_blocks is enough. No need to fix this.
>
>>  
>> -	for (i = 0; i < orphan_blkaddr; i++) {
>> +	for (i = 0; i < orphan_blkaddr - start_blk; i++) {
>
>ditto.
>
>Thanks,
--
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