Messages in this thread | | | Subject | Re: [PATCH] SCSI: Add SG_GET_SG_MAX_SEGMENT_SIZE ioctl to sg device | From | James Bottomley <> | Date | Mon, 02 Jul 2012 12:18:17 +0100 |
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On Mon, 2012-07-02 at 17:20 +0800, Cong Meng wrote: > Add a new ioctl cmd to get the max segment size. It's useful in > virtualization environment for guest to know the queue limits, so > that the guest kicks off legal scsi command to a sg device.
What's wrong with simply looking in the /sys for this? Plus, if you can come up with a justifiable reason, this needs to be in block as well so we can send it to all SCSI devices regardless of what ULD people use.
James
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