Re: 2.7 block ramblings (was Re: DMA for ide-scsi?)

[Jeff Garzik]

Jens Axboe wrote:
> On Tue, Sep 16 2003, Jeff Garzik wrote:

> > And we should deprecate them with a solution that aligns what with Linus
> > described in Dec 2001 on lkml:  a chrdev where userland write(2)s cdbs
> > and taskfiles, and read(2)s the results.  This is where my thinking
> > picked up:  if we are creating a chrdev to send "packets" and receive
> > responses to those packets............  <insert conclusion here>
>
>
> == bsg, block sg. Did you read what I wrote? :). I started implementing
> this and have something that barely works. You just bind a block device
> to a /dev/sg* char device and use read/write on that. Aka sg.

sg needs some modifications -- for example it errors out instead of 
sleeps on queue full -- but sounds good to me.


> I don't want ioctls command submission interfaces more than you do.

Groovy.

	Jeff



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