On Wed, May 23, 2007 at 05:05:24PM +0200, Erik Mouw wrote: > On Wed, May 23, 2007 at 09:51:37PM +0900, Seongsu Lee wrote: > > On Mon, May 21, 2007 at 12:04:49PM +0200, Erik Mouw wrote: > > > On Mon, May 21, 2007 at 07:46:39AM +0900, Seongsu Lee wrote: > > > > How can I override the request function of a gendisk? > > > > > > Why do you want to override it in the first place? What is the goal? > > > Maybe there are much better ways to achieve what you try to do. > > > > What I want to do is to use my own do_request function which > > redirect I/O request into physically another device under the > > condition. > > Why don't you just use LVM instead? In my experimental environment, the 'another device' can be MTD device or network-based device. So, I need my own do_request() function which switches between block devices and non-block devices under the condition. For now, the condition will be derived from the each device's characteristics. (latency, capacity and so on.) It would be great if LVM support non block devices also. -- Seongsu's personal blog - http://www.senux.com/ "Are [Linux users] lemmings collectively jumping off of the cliff of reliable, well-engineered commercial software?" (By Matt Welsh) -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
