Re: [PATCH 4/7] blk-mq: use the I/O scheduler for writes from the flush state machine

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To: Jens Axboe <axboe@xxxxxxxxx>
Subject: Re: [PATCH 4/7] blk-mq: use the I/O scheduler for writes from the flush state machine
From: Christoph Hellwig <hch@xxxxxx>
Date: Wed, 24 May 2023 07:53:27 +0200
Cc: Bart Van Assche <bvanassche@xxxxxxx>, Damien Le Moal <dlemoal@xxxxxxxxxx>, linux-block@xxxxxxxxxxxxxxx
In-reply-to: <20230519044050.107790-5-hch@lst.de>
References: <20230519044050.107790-1-hch@lst.de> <20230519044050.107790-5-hch@lst.de>
User-agent: Mutt/1.5.17 (2007-11-01)

I turns out this causes some kind of hang I haven't been able to
debug yet in blktests' hotplug test.   Can you drop this and the
subsequent patches for now?

Follow-Ups:
- Re: [PATCH 4/7] blk-mq: use the I/O scheduler for writes from the flush state machine
  - From: Bart Van Assche
- Re: [PATCH 4/7] blk-mq: use the I/O scheduler for writes from the flush state machine
  - From: Bart Van Assche

References:
- less special casing for flush requests v2
  - From: Christoph Hellwig
- [PATCH 4/7] blk-mq: use the I/O scheduler for writes from the flush state machine
  - From: Christoph Hellwig

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