Re: [PATCH v9] block: cancel all throttled bios in del_gendisk()

[Jens Axboe]

On 2/27/22 10:16 AM, Christoph Hellwig wrote:
> On Thu, Feb 10, 2022 at 07:56:37PM +0800, Yu Kuai wrote:
>> Throttled bios can't be issued after del_gendisk() is done, thus
>> it's better to cancel them immediately rather than waiting for
>> throttle is done.
>>
>> For example, if user thread is throttled with low bps while it's
>> issuing large io, and the device is deleted. The user thread will
>> wait for a long time for io to return.
> 
> FYI, this crashed left rigt and center when running xfstests with
> traces pointing to throtl_pending_timer_fn.

Dropped for now.

-- 
Jens Axboe