On 2018/4/5 11:47, Jaegeuk Kim wrote:
> On 04/04, Chao Yu wrote:
>> If last_zone((total_zones >> 2)) is equal or less than
>> next_zone(CURSEG_COLD_NODE), cold data area will be located in the
>> same position with hot data, fixes it.
> 
> verify_cur_segs() will rearrage this?

Yes, finally, verify_cur_segs() will make sure there is no redundant segment
used by different log headers. But we'd better ensure log initial position is
correct at the first time, otherwise, verify_cur_segs() will use sequential
allocating to initialize log position, which is not match to our original 
design.

Thanks,

> 
> 
>>
>> Signed-off-by: Chao Yu <yuch...@huawei.com>
>> ---
>>  mkfs/f2fs_format.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/mkfs/f2fs_format.c b/mkfs/f2fs_format.c
>> index 65692bbe083a..8885f632371d 100644
>> --- a/mkfs/f2fs_format.c
>> +++ b/mkfs/f2fs_format.c
>> @@ -471,7 +471,7 @@ static int f2fs_prepare_super_block(void)
>>              c.cur_seg[CURSEG_HOT_DATA] = next_zone(CURSEG_COLD_NODE);
>>              c.cur_seg[CURSEG_COLD_DATA] =
>>                              max(last_zone((total_zones >> 2)),
>> -                                    next_zone(CURSEG_COLD_NODE));
>> +                                    next_zone(CURSEG_HOT_DATA));
>>              c.cur_seg[CURSEG_WARM_DATA] =
>>                              max(last_zone((total_zones >> 1)),
>>                                      next_zone(CURSEG_COLD_DATA));
>> -- 
>> 2.15.0.55.gc2ece9dc4de6
> 
> .
> 


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