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Date: Tue, 27 Nov 2001 16:40:44 -0800 (PST)
From: Andre Hedrick <andre@linuxdiskcert.org>
To: Linus Torvalds <torvalds@transmeta.com>
cc: linux-kernel@vger.kernel.org
Subject: Re: 2.5.1-pre2 does not compile
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Given that block is in the transition period, would you consider a
schedule of when you are taking patchs ?

Regard,

Andre Hedrick
Linux Disk Certification Project                Linux ATA Development

On Tue, 27 Nov 2001, Linus Torvalds wrote:

> In article <200111272044.fARKiTv13653@db0bm.ampr.org>,
> f5ibh  <f5ibh@db0bm.ampr.org> wrote:
> >
> >I've the following error :
> 
> Yes.
> 
> The next-generation block-layer support is starting to be merged into
> the 2.5.x tree, and that breaks old drivers that haven't been updated to
> the new locking.
> 
> In particular, there used to be _one_ lock for the whole IO system
> ("io_request_lock"), and these days it's a per-block-queue lock.
> 
> In many cases the fix is as simple as just replacing the
> "io_request_lock" with "host->host_lock", but sometimes this is
> complicated by the need to pass the right data structures down far
> enough..
> 
> Many drivers have been converted (ie IDE, symbios, aic7xxx etc), but
> many more have not (especially older SCSI drivers, in your case it's the
> classic aha1542).
> 
> It will probably take some time until most drivers have been converted.
> Tested patches are more than welcome,
> 
> 		Linus
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