Re: [PATCH] 2.5.67-ac2 direct-IO for IDE taskfile ioctl (0/4)
Andrew Morton (akpm@digeo.com)
Wed, 23 Apr 2003 16:20:41 -0700
Andries Brouwer <aebr@win.tue.nl> wrote:
>
> On Wed, Apr 23, 2003 at 03:35:00PM -0700, Andrew Morton wrote:
>
> > What is special about the IDE ioctl approach?
>
> Usually one wants to use the standard commands for I/O.
> But if the purpose is to talk to the drive (set password,
> set native max, eject, change ZIP drive from big floppy
> mode to removable disk mode, etc. etc.) then one needs
> a means to execute IDE commands "by hand".
Yes, but none of these are performance-critical and they don't involve
large amnounts of data. A copy is OK.
If all the rework against bio_map_user() and friends is needed for other
reasons then fine. But it doesn't seem to be needed for the IDE taskfile
ioctl.
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