linux-kernel - Re: [PATCH 2/2] ext4: improve mount/remount error handling

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Date:	Thu, 8 Aug 2013 23:03:50 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	Piotr Sarna <p.sarna@...tner.samsung.com>
Cc:	adilger.kernel@...ger.ca, linux-kernel@...r.kernel.org,
	linux-ext4@...r.kernel.org, b.zolnierkie@...sung.com,
	Kyungmin Park <kyungmin.park@...sung.com>
Subject: Re: [PATCH 2/2] ext4: improve mount/remount error handling

On Fri, Aug 02, 2013 at 02:03:47PM +0200, Piotr Sarna wrote:
> Commit 5688978 ("ext4: improve handling of conflicting mount options")
> introduced incorrect messages shown while choosing wrong mount options.
> 
> Firstly, both cases of incorrect mount options, "data=journal,delalloc"
> and "data=journal,dioread_nolock" result in the same error message.
> 
> Secondly, the problem above isn't solved for remount option: the mismatched
> parameter is simply ignored. Moreover, ext4_msg states that remount
> with options "data=journal,delalloc" succeeded, which is not true.
> 
> To fix it up, I added a simple check after parse_options() call to ensure
> that data=journal and delalloc/dioread_nolock parameters are not present
> at the same time.
> 
> Signed-off-by: Piotr Sarna <p.sarna@...tner.samsung.com>
> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park@...sung.com>

Applied, thanks.

						- Ted
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