Messages in this thread |  | | Date | Wed, 14 Nov 2001 08:56:42 +0100 | From | Jens Axboe <> | Subject | Re: elvtune fails with DAC960 and devfs on 2.4.14 |
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On Tue, Nov 13 2001, Dave Jones wrote: > On Tue, 13 Nov 2001, Brian Ristuccia wrote: > > > I can't seem to adjust the elevator parameters for this block device, but > > can't: > > # elvtune /dev/rd/disc0/disc > > ioctl get: Invalid argument > > DAC960.c doesn't know about BLKELVSET / BLKELVGET, and control is > only passed down to the generic ioctl in the case of BLKBSZSET, > and doesn't have a default: entry in the switch statement of > DAC960_IOCTL() > > I've not seen one of these devices, so I'm not sure if this makes > sense or not, but passing on requests to the lower level should > be a simple.. > > default: > return( blk_ioctl(Inode->i_rdev, Request, Argument)); > > Addition.
Or just add it to the BLKBSZGET etc string that pass it on to blk_ioctl anyways.
> There may be other reasons this driver doesn't provide the > elevator ioctls though.
None, it was simply never added.
-- Jens Axboe
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