Re: [BK PATCHES] add ata scsi driver

[Nick Piggin (piggin@cyberone.com.au)]

Linus Torvalds wrote:

> On Tue, 27 May 2003, Nick Piggin wrote:
>
> > There is an elevator notifier which is called on request
> > completion in Andrew's tree (needed for AS io scheduler). This
> > can be used to do what you want.
>
> Well, yeah, sure, you can use it to keep track of outstanding requests. 
> But wouldn't it be nicer to see them in the first place?
Yeah. Basically the driver will call:
elv_next_request, elv_remove_request, elv_completed_request

elv_remove_request can easily just move the request to another
list, which is removed by elv_completed_request.

Don't let the names bother you, the elevator (in Andrew's tree)
gets all the information it needs.

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