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From: Jan Kara <>
To: Jens Axboe <>
Cc: <>,
	Paolo Valente <>, Jan Kara <>
Subject: [PATCH 0/2 v4] block: Fix deadlock when merging requests with BFQ
Date: Wed, 23 Jun 2021 11:36:32 +0200	[thread overview]
Message-ID: <> (raw)


This patch series fixes a lockdep complaint and a possible deadlock that
can happen when blk_mq_sched_try_insert_merge() merges and frees a request.
Jens, can you please merge the series? It seems to have slipped through last
time when I posted it. Thanks!

Changes since v3:
* Rebased on top of for-next branch in axboe/linux-block.git

Changes since v2:
* Added reviewed-by tags

Changes since v1:
* Remove patch disabling recursing request merging during request insertion
* Modified BFQ to cleanup merged request already in its .merge_requests handler
* Added code to handle multiple requests that need freeing after being merged


             reply	other threads:[~2021-06-23  9:36 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-23  9:36 Jan Kara [this message]
2021-06-23  9:36 ` [PATCH 1/2] bfq: Remove merged request already in bfq_requests_merged() Jan Kara
2021-06-23  9:36 ` [PATCH 2/2] blk: Fix lock inversion between ioc lock and bfqd lock Jan Kara
2021-06-25  0:44 ` [PATCH 0/2 v4] block: Fix deadlock when merging requests with BFQ Jens Axboe

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