linux-kernel - Re: [patch] block: fix queue bounce limit calculation

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Message-Id: <200608192258.17430.ak@suse.de>
Date:	Sat, 19 Aug 2006 22:58:17 +0200
From:	Andi Kleen <ak@...e.de>
To:	Chuck Ebbert <76306.1226@...puserve.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	Jens Axboe <axboe@...e.de>
Subject: Re: [patch] block: fix queue bounce limit calculation

On Saturday 19 August 2006 12:11, Chuck Ebbert wrote:
> Queue bounce should start after the max page, not on it.

The page with memory 0xffffffff...0xffffffff+4096 is already
beyond the limit. And 0xffffffff's PFN is 0xffffffff>>PAGE_SHIFT.

I don't see how the patch is correct.

-Andi

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