Re: [PATCH] loop: make autoclear operation asynchronous

[syzbot] possible deadlock in blkdev_put (2) · syzbot <hidden> · 2021-11-27
Re: [syzbot] possible deadlock in blkdev_put (2) · Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> · 2021-11-27
Re: [syzbot] possible deadlock in blkdev_put (2) · Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> · 2021-11-28
Re: [syzbot] possible deadlock in blkdev_put (2) · Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> · 2021-11-28
Re: [syzbot] possible deadlock in blkdev_put (2) · Christoph Hellwig <hch@infradead.org> · 2021-11-29
Re: [syzbot] possible deadlock in blkdev_put (2) · Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> · 2021-11-29
Re: [syzbot] possible deadlock in blkdev_put (2) · Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> · 2021-11-29
Re: [syzbot] possible deadlock in blkdev_put (2) · Christoph Hellwig <hch@infradead.org> · 2021-11-30
[PATCH] loop: make autoclear operation asynchronous · Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> · 2021-12-01
Re: [PATCH] loop: make autoclear operation asynchronous · Christoph Hellwig <hch@infradead.org> · 2021-12-02
Re: [PATCH] loop: make autoclear operation asynchronous · Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> · 2021-12-02
Re: [PATCH] loop: make autoclear operation asynchronous · Jan Kara <jack@suse.cz> · 2021-12-02
Re: [PATCH] loop: make autoclear operation asynchronous · Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> · 2021-12-02
Re: [PATCH] loop: make autoclear operation asynchronous · Jan Kara <jack@suse.cz> · 2021-12-02
Re: [PATCH] loop: make autoclear operation asynchronous · Christoph Hellwig <hch@infradead.org> · 2021-12-03
Re: [PATCH] loop: make autoclear operation asynchronous · Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> · 2021-12-03
Re: [PATCH] loop: make autoclear operation asynchronous · Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> · 2021-12-08
Re: [syzbot] possible deadlock in blkdev_put (2) · syzbot <hidden> · 2021-12-08
Re: [syzbot] possible deadlock in blkdev_put (2) · syzbot <hidden> · 2021-12-08

From: Christoph Hellwig <hch@infradead.org>
Date: 2021-12-02 07:22:50

On Wed, Dec 01, 2021 at 11:41:23PM +0900, Tetsuo Handa wrote:

OK. Here is a patch.
Is this better than temporarily dropping disk->open_mutex ?

This looks much better, and also cleans up the horrible locking warts
in __loop_clr_fd.

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