Re: [PATCH block/for-linus] blk-rq-qos: fix first node deletion of rq_qos_del()

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To: Tejun Heo <tj@xxxxxxxxxx>
Subject: Re: [PATCH block/for-linus] blk-rq-qos: fix first node deletion of rq_qos_del()
From: Jens Axboe <axboe@xxxxxxxxx>
Date: Tue, 15 Oct 2019 10:13:54 -0600
Cc: linux-block@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, kernel-team@xxxxxx, Josef Bacik <josef@xxxxxxxxxxxxxx>
In-reply-to: <20191015154927.GL18794@devbig004.ftw2.facebook.com>
References: <20191015154927.GL18794@devbig004.ftw2.facebook.com>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0

On 10/15/19 9:49 AM, Tejun Heo wrote:
> rq_qos_del() incorrectly assigns the node being deleted to the head if
> it was the first on the list in the !prev path.  Fix it by iterating
> with ** instead.

Well, that's unfortunate... Applied.

-- 
Jens Axboe

References:
- [PATCH block/for-linus] blk-rq-qos: fix first node deletion of rq_qos_del()
  - From: Tejun Heo

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