linux-kernel - Re: [PATCH 0/2] block: avoid to drop & re-add partitions if partitions aren't changed

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Message-ID: <20210217030714.GB259250@T590>
Date:   Wed, 17 Feb 2021 11:07:14 +0800
From:   Ming Lei <ming.lei@...hat.com>
To:     Christoph Hellwig <hch@....de>
Cc:     Jens Axboe <axboe@...nel.dk>, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, "Ewan D . Milne" <emilne@...hat.com>
Subject: Re: [PATCH 0/2] block: avoid to drop & re-add partitions if
 partitions aren't changed

On Tue, Feb 16, 2021 at 09:44:30AM +0100, Christoph Hellwig wrote:
> On Mon, Feb 15, 2021 at 12:03:41PM +0800, Ming Lei wrote:
> > Hello,
> 
> I think this is a fundamentally bad idea.  We should not keep the
> parsed partition state around forever just to work around some buggy
> user space software.

What is the bug in userspace software?

Do you think it is correct for ioctl(BLKRRPART) to always drop/re-add
partition device node?

-- 
Ming