Re: [PATCH v3 23/24] erofs: introduce cached decompression

Gao Xiang
2019-07-22T16:27:42Z

On 2019/7/22 ????11:12, Theodore Y. Ts'o wrote:
> On Mon, Jul 22, 2019 at 10:16:44PM +0800, Gao Xiang wrote:
>> OK, I will give a try. One point I think is how to deal with the case
>> if there is already cached information when remounting as well as you said.
>>
>> As the first step, maybe the mount option can be defined as
>> allowing/forbiding caching from now on, which can be refined later.
>
> Yes; possible solutions include ignoring the issue (assuming that
> cached data structures that "shouldn't" be in the cache given the new
> cache strategy will fall out of the cache over time), forcibly
> flushing the cache when the caching strategy has changed, and of
> course, forbidding caching strategy change at remount time.

Okay, thanks for your kindly suggestion :)

will do, hopefully resend this week (I agree less bugs with less
kernel configs.).

Thanks,
Gao Xiang

>
> Cheers,
>
> - Ted
>