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From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: Tejun Heo <tj@kernel.org>,
	linux-block@vger.kernel.org, Ming Lei <ming.lei@redhat.com>
Subject: tear down file system I/O in del_gendisk
Date: Mon, 20 Sep 2021 13:24:01 +0200	[thread overview]
Message-ID: <20210920112405.1299667-1-hch@lst.de> (raw)

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.

             reply	other threads:[~2021-09-20 11:25 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-20 11:24 Christoph Hellwig [this message]
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 ` tear down file system I/O in del_gendisk Bart Van Assche
2021-09-21  9:08   ` Christoph Hellwig
2021-09-21 14:24     ` Bart Van Assche
2021-09-21 22:33       ` Bart Van Assche

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