Re: [PATCH RFC v2 5/6] blk-throttle: support to destroy throtl_data when blk-throttle is disabled

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Hi,

在 2024/04/13 2:05, Tejun Heo 写道:
Hello,

On Sat, Apr 06, 2024 at 04:00:58PM +0800, Yu Kuai wrote:
From: Yu Kuai <yukuai3@xxxxxxxxxx>

Currently once blk-throttle is enabled, it can't be destroyed until disk
removal, even it's disabled.

Also prepare to support building it as kernel module.

The benefit of doing this whenever the ruleset becomes empty seems marginal.
This isn't necessary to allow unloading blk-throttle and
blkg_conf_exit_blkg() is also necessary because of this, right?

Yes, this is why blkg_conf_exit_blkg() is necessary.

I think that we need find an appropriate time to unload blk-throttle
other than deleting the gendisk. I also think of adding a new user input
like "8:0 free" to do this. These are the solutions that I can think of
for now.

Thanks,
Kuai


Thanks.






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