linux-kernel - Re: [PATCH -next v2] blk-throttle: Set BIO

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Message-Id: <165283753506.124778.6326413719734024023.b4-ty@kernel.dk>
Date:   Tue, 17 May 2022 19:32:15 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     tj@...nel.org, qiulaibin@...wei.com
Cc:     cgroups@...r.kernel.org, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next v2] blk-throttle: Set BIO_THROTTLED when bio has been throttled

On Tue, 1 Mar 2022 20:39:19 +0800, Laibin Qiu wrote:
> 1.In current process, all bio will set the BIO_THROTTLED flag
> after __blk_throtl_bio().
> 
> 2.If bio needs to be throttled, it will start the timer and
> stop submit bio directly. Bio will submit in
> blk_throtl_dispatch_work_fn() when the timer expires.But in
> the current process, if bio is throttled. The BIO_THROTTLED
> will be set to bio after timer start. If the bio has been
> completed, it may cause use-after-free blow.
> 
> [...]

Applied, thanks!

[1/1] blk-throttle: Set BIO_THROTTLED when bio has been throttled
      commit: 5a011f889b4832aa80c2a872a5aade5c48d2756f

Best regards,
-- 
Jens Axboe