linux-kernel - Re: [PATCH 1/2] fs: Do not dispatch FITRIM through separate super

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Message-ID: <4CE68EA8.9020709@teksavvy.com>
Date:	Fri, 19 Nov 2010 09:50:16 -0500
From:	Mark Lord <kernel@...savvy.com>
To:	Ted Ts'o <tytso@....edu>, Steven Whitehouse <swhiteho@...hat.com>,
	Lukas Czerner <lczerner@...hat.com>,
	James Bottomley <James.Bottomley@...e.de>,
	Christoph Hellwig <hch@...radead.org>,
	Matthew Wilcox <matthew@....cx>,
	Josef Bacik <josef@...hat.com>, linux-ext4@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	sandeen@...hat.com
Subject: Re: [PATCH 1/2] fs: Do not dispatch FITRIM through separate super_operation

On 10-11-19 09:02 AM, Ted Ts'o wrote:
> On Fri, Nov 19, 2010 at 08:53:25AM -0500, Mark Lord wrote:
>
>> Non-deterministic TRIM _should_ also try to ensure that the original data
>> is no longer there (for security reasons), so it _may_ have the same issues.
>
> Says who?  We've deleted files on hard drives for a long time without
> scrubbing data blocks.

"should" try, not "must" try.  :)

It's not mandatory, but I feel it is a Good Idea(tm).
That's why it "may" have the same issues.  Or not.

Thanks Ted.
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