Subject: Re: Make VOP_STRATEGY a real VOP
To: Juergen Hannken-Illjes <hannken@eis.cs.tu-bs.de>
From: Jason Thorpe <thorpej@wasabisystems.com>
List: tech-kern
Date: 01/21/2004 16:31:05
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On Jan 19, 2004, at 11:04 AM, Juergen Hannken-Illjes wrote:
First of all, apologies for delaying in responding to this. I'm pretty
sure you're doing this based on feed-back I gave to your fss(4) driver,
and so it's only fair to expect me to respond quickly to this sort of
stuff.
> VOP_STRATEGY is no real VOP because it is missing a vnode as a first
> argument. I propose to convert VOP_STRATEGY(bp) to two functions
> VOP_STRATEGY(vp, bp) and DEV_STRATEGY(bp) as follows:
>
> VOP_STRATEGY(vp, bp) will run the strategy routine for the vp arg
> and the conversion is like VOP_STRATEGY(bp) ->
> VOP_STRATEGY(bp->b_vp, bp).
>
> DEV_STRATEGY(bp) is used for block-to-block device situations and
> calls
> the d_strategy() routine from device bp->b_dev.
I think this is terrific. Thanks very much for doing this. I support
this change 100%.
BTW, it warrants a kernel version bump.
-- Jason R. Thorpe <thorpej@wasabisystems.com>
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