From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Jens Axboe <axboe@suse.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] IDE: Do not call bh_phys() on buffers with invalid b_page.
Date: 29 Jan 2003 16:26:15 +0100 [thread overview]
Message-ID: <1043853975.1668.74.camel@zion.wanadoo.fr> (raw)
In-Reply-To: <20030129152214.GE31566@suse.de>
On Wed, 2003-01-29 at 16:22, Jens Axboe wrote:
> Ehm no, if b_data is < PAGE_SIZE, it's probably an offset and not a
> valid address. So it should be exactly where it is -- for b_page, it's
> _not_ buggy for b_data to be < PAGE_SIZE. That's expected. Submitter
> would have to be buggy for it to trigger, though, so you can just remove
> it if you want.
Ah, I see what you wanted to check now :) Ok, I won't remove it, though
it would still make sense to extend the test to PAGE_OFFSET I beleive,
any b_data < PAGE_OFFSET is wrong.
Anyway, let's leave 2.4 as it is now.
--
Benjamin Herrenschmidt <benh@kernel.crashing.org>
next prev parent reply other threads:[~2003-01-29 15:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-29 14:57 Benjamin Herrenschmidt
2003-01-29 15:00 ` Jens Axboe
2003-01-29 15:20 ` Benjamin Herrenschmidt
2003-01-29 15:22 ` Jens Axboe
2003-01-29 15:26 ` Benjamin Herrenschmidt [this message]
2003-01-29 15:38 ` Jens Axboe
2003-01-29 15:44 ` Benjamin Herrenschmidt
2003-01-29 15:47 ` Jens Axboe
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