Messages in this thread | | | Date | Wed, 22 Sep 2021 15:34:49 +0100 | From | Christoph Hellwig <> | Subject | Re: [PATCH 4/4] block: cancel all throttled bios in blk_cleanup_queue() |
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On Wed, Sep 22, 2021 at 08:51:15PM +0800, Yu Kuai wrote: > Throttled bios can't be issued after queue is dying in > blk_cleanup_queue(), 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 is > issuing large io, and the device is deleted. The user thread will > wait for a long time for io to return.
blk_cleanup_queue is too late, this will need to go into del_gendisk and on top of my "tear down file system I/O in del_gendisk" series.
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