linux-kernel - Re: [PATCH 8/9] random: tighten bound on random_read_wakeup

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Message-ID: <20131206003128.GC9010@thunk.org>
Date:	Thu, 5 Dec 2013 19:31:28 -0500
From:	Theodore Ts'o <tytso@....edu>
To:	Greg Price <price@....EDU>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 8/9] random: tighten bound on random_read_wakeup_thresh

On Wed, Nov 13, 2013 at 03:08:35AM -0500, Greg Price wrote:
> We use this value in a few places other than its literal meaning,
> in particular in _xfer_secondary_pool() as a minimum number of
> bits to pull from the input pool at a time into either output
> pool.  It doesn't make sense to pull more bits than the whole size
> of an output pool.
> 
> We could and possibly should separate the quantities "how much
> should the input pool have to have to wake up /dev/random readers"
> and "how much should we transfer from the input to an output pool
> at a time", but nobody is likely to be sad they can't set the first
> quantity to more than 1024 bits, so for now just limit them both.
> 
> Cc: "Theodore Ts'o" <tytso@....edu>
> Signed-off-by: Greg Price <price@....edu>

Thanks, applied.

				- Ted
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