Re: [PATCH] Remove SCSI_BH

From: Matthew Wilcox (willy@debian.org)
Date: Mon Jun 17 2002 - 06:14:36 EST


On Sun, Jun 16, 2002 at 10:22:01PM -0700, David S. Miller wrote:
> From: Matthew Wilcox <willy@debian.org>
> Date: Sun, 16 Jun 2002 19:22:53 +0100
>
> Hi, Linus. This patch switches SCSI from a bottom half to a tasklet.
> It's been reviewed, tested & approved by Andrew Morton, James Bottomley &
> Doug Gilbert. Please apply.
>
> I always wanted to make this a per-cpu SOFTIRQ, there is no reason
> it can't be and it's important enough to deserve to be one.

I agree that it probably should become a softirq. However, in its current
state, I'm not sure it would gain any advantage from becoming a softirq.
I think it would take someone with far more understanding of the SCSI
layer than I have to do this work properly. My current motivation is to
eradicate bottom halves rather than to improve scsi.

If someone's maintaining a TODO list for the scsi subsystem, please include:

 * Convert scsi_bottom_half_handler to a softirq.

as one of the entries.

-- 
Revolutions do not require corporate support.
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