Messages in this thread | | | Subject | Re: [PATCH] 2.5.67-ac2 direct-IO for IDE taskfile ioctl (0/4) | From | Alan Cox <> | Date | 23 Apr 2003 23:09:47 +0100 |
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On Mer, 2003-04-23 at 23:35, Andrew Morton wrote: > Dumb question: what does all this code actually do? > > It appears to be implementing an IDE-specific ioctl() which performs bulk > IO direct to/from userspace. But that seems to be equivalent to O_DIRECT > access to /dev/hda. > > What is special about the IDE ioctl approach?
Think /dev/sg at the ATA level
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