linux-kernel - Re: [PATCH 1/1] mm: bdi: Initialize bdi_min

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Message-ID: <YXFMJJ3u+x34iNy0@infradead.org>
Date:   Thu, 21 Oct 2021 04:16:52 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Manjong Lee <mj0123.lee@...sung.com>
Cc:     akpm@...ux-foundation.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, seunghwan.hyun@...sung.com,
        sookwan7.kim@...sung.com, nanich.lee@...sung.com,
        yt0928.kim@...sung.com, junho89.kim@...sung.com,
        jisoo2146.oh@...sung.com
Subject: Re: [PATCH 1/1] mm: bdi: Initialize bdi_min_ratio when bdi unregister

On Fri, Oct 22, 2021 at 01:19:43AM +0900, Manjong Lee wrote:
> Because when sdcard is removed, bdi_min_ratio value will remain.
> Currently, the only way to reset bdi_ min_ratio is to reboot.

But bdis that are unregistered are never re-registered.  What is
the problem you're trying to solve?