Going from struct disk to a fh?

[Sam Robb]

On Apr 14, 2010, at 5:18 PM, John Baldwin wrote:

> On Wednesday 14 April 2010 9:08:50 am Sam Robb wrote:
>> In the kernel, given a struct disk, is there a way to turn that into 
> something that can be used to read/write from the disk? Or is my best bet in 
> this situation to figure out the device path for the disk, and just use 
> kern_open() to access it?
> 
> You can use dp->d_geom as the target of a bio via GEOM I think.  However, I 
> don't have experience with sending bio's to a specific GEOM directly.  File 
> systems usually use geom_vfs to feed requests from bread(), etc. to a mounted 
> disk device using a devfs vnode for the associated disk device.

Thanks, John.  I've found another way around my problem in user space; if I revisit the kernel solution, I'll take a look at using bio.

-Samrobb