From: Bart Van Assche <bvanassche@acm.org>
To: linux-scsi <linux-scsi@vger.kernel.org>,
James Bottomley <jbottomley@parallels.com>,
Mike Christie <michaelc@cs.wisc.edu>,
Jens Axboe <axboe@kernel.dk>, Tejun Heo <tj@kernel.org>,
Chanho Min <chanho.min@lge.com>
Subject: [PATCH 0/4 v4] More device removal fixes
Date: Wed, 10 Oct 2012 17:05:34 +0200 [thread overview]
Message-ID: <50758EBE.7050202@acm.org> (raw)
Fix a few race conditions that can be triggered by removing a device:
- Avoid that request_fn() can be invoked on a dead queue.
- Avoid that blk_cleanup_queue() can finish while request_fn is still
running.
- Fix a race between starved list processing and device removal.
These patches have been tested on top of commit 2474542f - a commit
between 3.6 and the upcoming 3.7-rc1.
Changes compared to v3:
- Fixed a race condition by setting QUEUE_FLAG_DEAD earlier.
- Added a patch for fixing a race between starved list processing
and device removal to this series.
Changes compared to v2:
- Split second patch into two patches.
- Refined patch descriptions.
Changes compared to v1:
- Included a patch to rename QUEUE_FLAG_DEAD.
- Refined the descriptions of the __blk_run_queue_uncond() and
blk_cleanup_queue() functions.
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next reply other threads:[~2012-10-10 15:05 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-10 15:05 Bart Van Assche [this message]
2012-10-10 15:07 ` [PATCH 1/4] block: Rename queue dead flag Bart Van Assche
2012-10-16 23:31 ` Tejun Heo
2012-10-10 15:08 ` [PATCH 2/4] block: Avoid that request_fn is invoked on a dead queue Bart Van Assche
2012-10-16 23:38 ` Tejun Heo
2012-10-23 12:11 ` Bart Van Assche
2012-10-24 19:13 ` Tejun Heo
2012-10-10 15:09 ` [PATCH 3/4] Make blk_cleanup_queue() wait until request_fn finished Bart Van Assche
2012-10-16 23:51 ` Tejun Heo
2012-10-23 12:16 ` Bart Van Assche
2012-10-24 19:11 ` Tejun Heo
2012-10-10 15:10 ` [PATCH 4/4] Fix race between starved list processing and device removal Bart Van Assche
2012-10-16 23:59 ` Tejun Heo
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