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From: Bart Van Assche <bvanassche@acm.org>
To: "Martin K . Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org, Bart Van Assche <bvanassche@acm.org>
Subject: [PATCH 0/4] Revert "Call blk_mq_free_tag_set() earlier"
Date: Sun, 21 Aug 2022 15:04:58 -0700	[thread overview]
Message-ID: <20220821220502.13685-1-bvanassche@acm.org> (raw)

Hi Martin,

Since a device, target or host reference may be held when scsi_remove_host()
or scsi_remove_target() is called and since te patch series "Call
blk_mq_free_tag_set() earlier" makes these functions wait until all references
are gone, that patch series may trigger a deadlock. Hence this request to
revert the patch series "Call blk_mq_free_tag_set() earlier".

Thanks,

Bart.

Bart Van Assche (4):
  scsi: core: Revert "Call blk_mq_free_tag_set() earlier"
  scsi: core: Revert "Simplify LLD module reference counting"
  scsi: core: Revert "Make sure that hosts outlive targets"
  scsi: core: Revert "Make sure that targets outlive devices"

 drivers/scsi/hosts.c       | 18 +++++-------------
 drivers/scsi/scsi.c        |  9 +++------
 drivers/scsi/scsi_scan.c   |  9 ---------
 drivers/scsi/scsi_sysfs.c  | 29 ++++++++++++-----------------
 include/scsi/scsi_device.h |  2 --
 include/scsi/scsi_host.h   |  3 ---
 6 files changed, 20 insertions(+), 50 deletions(-)


             reply	other threads:[~2022-08-21 22:05 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-21 22:04 Bart Van Assche [this message]
2022-08-21 22:04 ` [PATCH 1/4] scsi: core: Revert "Call blk_mq_free_tag_set() earlier" Bart Van Assche
2022-08-21 22:05 ` [PATCH 2/4] scsi: core: Revert "Simplify LLD module reference counting" Bart Van Assche
2022-08-21 22:05 ` [PATCH 3/4] scsi: core: Revert "Make sure that hosts outlive targets" Bart Van Assche
2022-08-21 22:05 ` [PATCH 4/4] scsi: core: Revert "Make sure that targets outlive devices" Bart Van Assche
2022-08-29  9:14 ` [PATCH 0/4] Revert "Call blk_mq_free_tag_set() earlier" Ming Lei
2022-08-29 12:14   ` Bart Van Assche
2022-09-01  5:12 ` Martin K. Petersen

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