Re: How to locate struct file * from a bio?

["Eddie Pettis" <pettis.eddie@gmail.com>]

On 1/31/07, Helge Hafting <helge.hafting@aitel.hist.no> wrote:
> Eddie Pettis wrote:
> > Short question:  Is it possible to locate the struct file * associated
> > with a bio?  If so, how?
> >
>
> Looks like you do this the wrong way.

Agreed.  It was a bad hack based on something I had done previously.

> Why don't you tap into "open" instead?
> Here you can note who opens the file and if they open it for
> reading or writing.  If you really need the amount of data
> transferred, consider trapping the read and write syscalls too.

I added hooks to the sys_* system calls for read/write/open/close from
userspace, and that seems to work.

Thanks!

> Helge Hafting
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