From: Andrew Morton <akpm@digeo.com>
To: Jens Axboe <axboe@suse.de>
Cc: Daniel Phillips <phillips@arcor.de>,
Jesse Barnes <jbarnes@sgi.com>,
"Richard B. Johnson" <root@chaos.analogic.com>,
"'David S. Miller'" <davem@redhat.com>,
linux-kernel@vger.kernel.org
Subject: Re: Calculating kernel logical address ..
Date: Tue, 10 Sep 2002 00:12:54 -0700 [thread overview]
Message-ID: <3D7D9B76.353BBEAB@digeo.com> (raw)
In-Reply-To: 20020910064354.GM8719@suse.de
Jens Axboe wrote:
>
> On Mon, Sep 09 2002, Daniel Phillips wrote:
> > On Monday 09 September 2002 21:40, Andrew Morton wrote:
> > > We need a general-purpose "read or write these pages to this blockdev"
> > > library function.
> >
> > I thought bio was supposed to be that. In what way does it not suffice?
> > Simply because of not having a suitable wrapper?
>
> a bio _can_ hold a number of pages, it's just that noone has written the
> bio_rw_pages() yet. Not that it would be hard...
It's simple if it's synchronous. When I discussed this a while
back with the LVM and EVMS developers the consensus was that an
async API would be better - so we'd need some sort of completion
cookie or callback or whatever.
It would end up with almost as much state as the rather amazing
`struct dio'.
Of course, one could do a synchronous API and see if anyone really,
really complains ;) But a bit of requirements-gathering would be
needed before getting in and coding it.
next prev parent reply other threads:[~2002-09-10 6:53 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-09 17:06 Calculating kernel logical address Imran Badr
2002-09-09 17:29 ` Richard B. Johnson
2002-09-09 17:23 ` David S. Miller
2002-09-09 17:34 ` Martin J. Bligh
2002-09-09 17:40 ` Daniel Phillips
2002-09-09 17:31 ` Imran Badr
2002-09-09 18:00 ` Richard B. Johnson
2002-09-09 18:12 ` Imran Badr
2002-09-09 18:27 ` Daniel Phillips
2002-09-09 18:41 ` Imran Badr
2002-09-09 21:55 ` Alan Cox
2002-09-09 22:52 ` Imran Badr
2002-09-09 23:09 ` Alan Cox
2002-09-09 18:13 ` Jesse Barnes
2002-09-09 18:25 ` Daniel Phillips
2002-09-09 19:40 ` Andrew Morton
2002-09-09 20:41 ` Daniel Phillips
2002-09-10 6:43 ` Jens Axboe
2002-09-10 7:12 ` Andrew Morton [this message]
2002-09-09 18:42 ` Andrew Morton
2002-09-10 7:03 ` Gerd Knorr
2002-09-09 18:16 ` Kurt Ferreira
2002-09-09 18:17 ` David S. Miller
2002-09-09 18:17 ` Daniel Phillips
2002-09-09 18:43 ` Richard B. Johnson
2002-09-09 18:50 ` Daniel Phillips
2002-09-09 18:57 ` Richard B. Johnson
2002-09-09 18:08 ` Andrew Morton
2002-09-09 18:23 ` Daniel Phillips
2002-09-09 18:49 ` Imran Badr
2002-09-09 18:46 ` David S. Miller
2002-09-09 19:06 ` Daniel Phillips
2002-09-09 19:14 ` Andrew Morton
2002-09-09 19:23 ` Imran Badr
-- strict thread matches above, loose matches on Subject: below --
2002-09-09 21:19 Manfred Spraul
2002-09-09 21:47 ` Andrew Morton
2002-09-10 17:01 ` Manfred Spraul
2002-09-09 21:02 Manfred Spraul
2002-09-09 21:07 ` Imran Badr
2002-09-06 15:44 Manfred Spraul
2002-09-06 17:13 ` Imran Badr
2002-09-07 1:57 ` Daniel Phillips
2002-09-06 3:23 side-by-side Re: BYTE Unix Benchmarks Version 3.6 Daniel Phillips
2002-09-06 3:34 ` Calculating kernel logical address Imran Badr
2002-09-07 1:44 ` Daniel Phillips
2002-09-08 0:01 ` David S. Miller
2002-09-08 18:44 ` Daniel Phillips
2002-09-09 5:00 ` David S. Miller
2002-09-09 5:17 ` Daniel Phillips
2002-09-09 5:28 ` David S. Miller
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