linux-kernel - Re: [PATCH 000 of 6] A few block-layer tidy-up patches.

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Date:	Fri, 17 Aug 2007 17:21:54 +1000
From:	Neil Brown <neilb@...e.de>
To:	Jens Axboe <jens.axboe@...cle.com>
Cc:	linux-kernel@...r.kernel.org, Tejun Heo <htejun@...il.com>
Subject: Re: [PATCH 000 of 6] A few block-layer tidy-up patches.

On Friday August 17, jens.axboe@...cle.com wrote:
> > > Please inspect the #block-2.6.24 branch to see the result.
> > 
> > I don't know where to look for this.  I checked
> >   http://git.kernel.org/?p=linux/kernel/git/axboe/linux-2.6-block.git
> > but they don't seem to be there.
> > ??
> 
> That's where it is, but the kernel.org mirroring is just horrible slow.
> Just checked now and it's there.

I discovered I was looking in the wrong place - not being very
familiar with git terminology.
I found them and it looks right.

I had a bit of a look at removing bio_data and ->buffer ...  the
usages outside of drivers/ide are fairly easy to deal with - I might
send a patch for that.  The drivers/ide stuff looks like a fairly
substantial rewrite is in order.
e.g.  idefloppy_packet_command_s seems to duplicate a lot of 
  fields from 'struct request', and it should probably use the request
  struct directly.

But a number of times ->buffer points to ->cmd, and there is no bio.
I guess we should use bio_map_kern to make a bio?

I'll see if I can come up with something.... testing it might be
awkward.  I have an ide cdrom I can test on.  Maybe an ide disk,, but
not an ide floppy :-)

NeilBrown
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