lkml.org 
[lkml]   [2016]   [Dec]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 1/2] bcache: Remove redundant set_capacity
From
Date
>>> I want to make sure that the set_capacity call that happens on cache 
>>> attachment is not necessary when a backing device is attached without
>>
>> Hi Eric, set_capacity() which removed in this patch is happened at cached_dev_init()
>> which is called when register a backing device, what do you mean "set_capacity call that happens on cache
>>> attachment" ?
>
>
> I'm sorry, you are correct. I though this was the cache-dev attachment,
> not the cached-dev attachment. Looks good.
>
> Reviewed-by: Eric Wheeler <bcache@linux.ewheeler.net>
>

Thanks!

> --
> Eric Wheeler
>
>>
>>
>>> its dirty writeback cache since bcache0 is not presented until the cache
>>> attaches in that case.
>>
>> I found bcache0 device present once we do make-bcache -B /dev/nvme1n1. before attach the cache set.
>> So I missed something ?
>>
>>>
>>> Can you also unregister the volume, attach the backing device first, and
>>> then the cache while the cache is dirty to make sure that the size is set
>>> correctly?
>>
>> When I unregister the cache device, I found all the dirty data has been flushed to
>> backing device, so how can I do the test the case as you point ?
>>
>> Thanks!
>> Yijing.
>>
>>>
>>> --
>>> Eric Wheeler
>>>
>>>>
>>>>>
>>>>> -Eric
>>>>>
>>>>>> dc->disk.disk->queue->backing_dev_info.ra_pages =
>>>>>> max(dc->disk.disk->queue->backing_dev_info.ra_pages,
>>>>>> q->backing_dev_info.ra_pages);
>>>>>> --
>>>>>> 2.5.0
>>>>>>
>>>>>> --
>>>>>> To unsubscribe from this list: send the line "unsubscribe linux-bcache" in
>>>>>> the body of a message to majordomo@vger.kernel.org
>>>>>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>>>>>
>>>>>
>>>>> .
>>>>>
>>>>
>>>> --
>>>> To unsubscribe from this list: send the line "unsubscribe linux-bcache" in
>>>> the body of a message to majordomo@vger.kernel.org
>>>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>
>>
>
> .
>

\
 
 \ /
  Last update: 2016-12-02 01:55    [W:0.093 / U:0.708 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site