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From: Bart Van Assche <>
To: Christoph Hellwig <>, Jens Axboe <>
Cc: Tejun Heo <>,, Ming Lei <>
Subject: Re: tear down file system I/O in del_gendisk
Date: Mon, 20 Sep 2021 20:38:31 -0700	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On 9/20/21 04:24, Christoph Hellwig wrote:
> Ming reported that for SCSI we have a lifetime problem now that
> the BDI moved from the request_queue to the disk as del_gendisk
> doesn't finish all outstanding file system I/O.  It turns out
> this actually is an older problem, although the case where it could
> be hit before was very unusual (unbinding of a SCSI upper driver
> while the scsi_device stays around).  This series fixes this by
> draining all I/O in del_gendisk.

Several failures are reported when running blktests against Jens' for-next
branch if KASAN and lockdep are enabled. Is this patch series sufficient
to make blktests pass again?



  parent reply	other threads:[~2021-09-21  3:38 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-20 11:24 tear down file system I/O in del_gendisk Christoph Hellwig
2021-09-20 11:24 ` [PATCH 1/4] block: factor out a blk_try_enter_queue helper Christoph Hellwig
2021-09-21  3:17   ` Bart Van Assche
2021-09-20 11:24 ` [PATCH 2/4] block: split bio_queue_enter from blk_queue_enter Christoph Hellwig
2021-09-21  3:25   ` Bart Van Assche
2021-09-20 11:24 ` [PATCH 3/4] block: drain file system I/O on del_gendisk Christoph Hellwig
2021-09-20 11:24 ` [PATCH 4/4] block: keep q_usage_counter in atomic mode after del_gendisk Christoph Hellwig
2021-09-21  3:29   ` Bart Van Assche
2021-09-21  9:07     ` Christoph Hellwig
2021-09-21  3:38 ` Bart Van Assche [this message]
2021-09-21  9:08   ` tear down file system I/O in del_gendisk Christoph Hellwig
2021-09-21 14:24     ` Bart Van Assche
2021-09-21 22:33       ` Bart Van Assche

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