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From: Jan Kara <jack@suse.cz>
To: Jens Axboe <axboe@kernel.dk>
Cc: <linux-block@vger.kernel.org>, Khazhy Kumykov <khazhy@google.com>,
	Ming Lei <ming.lei@redhat.com>,
	Paolo Valente <paolo.valente@linaro.org>, Jan Kara <jack@suse.cz>
Subject: [PATCH 0/2 v3] block: Fix deadlock when merging requests with BFQ
Date: Fri, 28 May 2021 14:30:39 +0200	[thread overview]
Message-ID: <20210528123041.29914-1-jack@suse.cz> (raw)

Hello,

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? Thanks!

Changed 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

								Honza

             reply	other threads:[~2021-05-28 12:30 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-28 12:30 Jan Kara [this message]
2021-05-28 12:30 ` [PATCH 1/2] bfq: Remove merged request already in bfq_requests_merged() Jan Kara
2021-05-28 12:30 ` [PATCH 2/2] blk: Fix lock inversion between ioc lock and bfqd lock Jan Kara

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