From: Joel Becker <Joel.Becker@oracle.com>
To: Jens Axboe <axboe@suse.de>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>,
"Stephen C. Tweedie" <sct@redhat.com>
Subject: Re: [PATCH] superbh, fractured blocks, and grouped io
Date: Wed, 16 Oct 2002 23:45:10 -0700 [thread overview]
Message-ID: <20021017064510.GX22117@nic1-pc.us.oracle.com> (raw)
In-Reply-To: <20021017055942.GC9245@suse.de>
On Thu, Oct 17, 2002 at 07:59:42AM +0200, Jens Axboe wrote:
> Eh no, it actually doesn't bounce anything! I added a test to bypass
> bouncing temporarily in blk_queue_bounce() (see the BH_Super test in
> there), but forgot to replace it with the real thing. The superbh
> contains no data, so is not a candidate for bouncing.
I understand that the superbh isn't a candidate for bouncing.
The problem is that the rest of the bhs are, and they never get bounced.
scsi_merge.c checks "if (PageHighMem(bh->b_page)) BUG();" in
__init_io(), and that obviously crashes.
Joel
--
"Conservative, n. A statesman who is enamoured of existing evils,
as distinguished from the Liberal, who wishes to replace them
with others."
- Ambrose Bierce, The Devil's Dictionary
Joel Becker
Senior Member of Technical Staff
Oracle Corporation
E-mail: joel.becker@oracle.com
Phone: (650) 506-8127
prev parent reply other threads:[~2002-10-17 6:39 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-14 13:51 Jens Axboe
2002-10-14 18:13 ` Joel Becker
2002-10-15 7:44 ` Jens Axboe
2002-10-15 19:33 ` Joel Becker
2002-10-17 0:51 ` Joel Becker
2002-10-17 1:07 ` Joel Becker
2002-10-17 6:03 ` Jens Axboe
2002-10-17 5:59 ` Jens Axboe
2002-10-17 6:45 ` Joel Becker [this message]
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