From: Jens Axboe <axboe@suse.de>
To: Arjan van de Ven <arjanv@redhat.com>
Cc: Peter Osterlund <petero2@telia.com>,
Andrew Morton <akpm@osdl.org>,
packet-writing@suse.com, linux-kernel@vger.kernel.org
Subject: Re: ext2 on a CD-RW
Date: Fri, 2 Jan 2004 11:09:09 +0100 [thread overview]
Message-ID: <20040102100909.GG5523@suse.de> (raw)
In-Reply-To: <1073034412.4429.1.camel@laptop.fenrus.com>
On Fri, Jan 02 2004, Arjan van de Ven wrote:
> On Fri, 2004-01-02 at 02:30, Peter Osterlund wrote:
>
> > The packet writing code has the restriction that a bio must not span a
> > packet boundary. (A packet is 32*2048 bytes.) If the page when mapped
> > to disk starts 2kb before a packet boundary, merge_bvec_fn therefore
> > returns 2048, which is less than len, which is 4096 if the whole page
> > is mapped, so the bio_add_page() call fails.
>
> devicemapper has similar restrictions for raid0 format; in that case
> it's device-mappers job to split the page/bio. Just as it is UDF's task
> to do the same I suspect...
It has nothing to do with UDF, it's a driver problem (API breakage).
--
Jens Axboe
next prev parent reply other threads:[~2004-01-02 10:09 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-01 23:47 ext2 on a CD-RW Peter Osterlund
2004-01-02 0:24 ` Andrew Morton
2004-01-02 1:30 ` Peter Osterlund
2004-01-02 9:06 ` Arjan van de Ven
2004-01-02 10:09 ` Jens Axboe [this message]
2004-01-02 10:51 ` Peter Osterlund
2004-01-02 10:59 ` Jens Axboe
2004-01-02 12:09 ` Peter Osterlund
2004-01-02 12:19 ` Jens Axboe
2004-01-02 13:38 ` Peter Osterlund
2004-01-02 13:59 ` Jens Axboe
2004-01-02 16:12 ` Peter Osterlund
2004-03-29 15:38 ` Peter Osterlund
2004-01-02 10:08 ` Jens Axboe
2004-01-03 19:14 ` Pavel Machek
2004-01-03 20:32 ` Peter Osterlund
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