RE: [REPORT] ext4 deadlock possibilities by DEPT

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To: tytso@xxxxxxx, adilger.kernel@xxxxxxxxx, linux-ext4@xxxxxxxxxxxxxxx
Subject: RE: [REPORT] ext4 deadlock possibilities by DEPT
From: Byungchul Park <byungchul.park@xxxxxxx>
Date: Wed, 16 Feb 2022 15:51:30 +0900
Cc: torvalds@xxxxxxxxxxxxxxxxxxxx, mingo@xxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, peterz@xxxxxxxxxxxxx, will@xxxxxxxxxx, tglx@xxxxxxxxxxxxx, rostedt@xxxxxxxxxxx, joel@xxxxxxxxxxxxxxxxx, sashal@xxxxxxxxxx, daniel.vetter@xxxxxxxx, chris@xxxxxxxxxxxxxxxxxx, duyuyang@xxxxxxxxx, johannes.berg@xxxxxxxxx, tj@xxxxxxxxxx, willy@xxxxxxxxxxxxx, david@xxxxxxxxxxxxx, amir73il@xxxxxxxxx, bfields@xxxxxxxxxxxx, gregkh@xxxxxxxxxxxxxxxxxxx, kernel-team@xxxxxxx, linux-mm@xxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, mhocko@xxxxxxxxxx, minchan@xxxxxxxxxx, hannes@xxxxxxxxxxx, vdavydov.dev@xxxxxxxxx, sj@xxxxxxxxxx, jglisse@xxxxxxxxxx, dennis@xxxxxxxxxx, cl@xxxxxxxxx, penberg@xxxxxxxxxx, rientjes@xxxxxxxxxx, vbabka@xxxxxxx, ngupta@xxxxxxxxxx, linux-block@xxxxxxxxxxxxxxx, axboe@xxxxxxxxx, paolo.valente@xxxxxxxxxx, josef@xxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, viro@xxxxxxxxxxxxxxxxxx, jack@xxxxxxx, jlayton@xxxxxxxxxx, dan.j.williams@xxxxxxxxx, hch@xxxxxxxxxxxxx, djwong@xxxxxxxxxx, dri-devel@xxxxxxxxxxxxxxxxxxxxx, airlied@xxxxxxxx, rodrigosiqueiramelo@xxxxxxxxx, melissa.srw@xxxxxxxxx, hamohammed.sa@xxxxxxxxx
In-reply-to: <1644984711-26423-1-git-send-email-byungchul.park@lge.com>
References: <1644984711-26423-1-git-send-email-byungchul.park@lge.com>

Thanks to Matthew, I found the reports are spurious.. I missed the case
that it's not going to real sleep after preparing a wait.

I'm sorry for bothering you guys. Please ignore the reports.

References:
- [REPORT] ext4 deadlock possibilities by DEPT
  - From: Byungchul Park

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