I spent all last night searching the LKML archives for the Rusty Russell HOWTO that John mentions, but I can't find it. I found a bunch of links to a HOWTO for ip-chains, but nothing for modules. Could anyone point me to that reference ? I read the Linux Device Drivers (Rubini) book on 'The Module usage Counter'. I see that in 2.4 I can/should do: owner: THIS_MODULE, in my file_operations structure. But both LDD & UTLK are light on exactly what this means. This link http://www.ibiblio.org/pub/Linux/docs/HOWTO/Module-HOWTO talks about registering a callback function that will return T/F to tell the module manager whether it can unload or not. However, I don't understand how 'owner:THIS_MODULE' does this for me. Does THIS_MODULE just point to a default module structure ? Can anyone point me to an example of how to use this ? It seems obvious that I'm currently not doing the right thing, and I'd really like to understand this. Any help much appreciated regards dom > -----Original Message----- > From: John Levon [mailto:levon@movementarian.org] > Sent: Sunday, December 08, 2002 7:21 PM > To: Curran, Dominic > Cc: kernelnewbies@nl.linux.org > Subject: Re: More about MOD_INC_USE_COUNT > > > On Sun, Dec 08, 2002 at 07:10:39PM -0600, Curran, Dominic wrote: > > > You want to put it in your open handler. This is the > handler that gets > > called when a user mode app opens a handle (file > descriptor) to your driver > > using fd=open("/dev/mydriver",...). > > No you don't. You want to set the relevant .owner field in the ops > structure you pass to the register function to be "THIS_MODULE" > > > I am interested to know why he said that, is the 2.5 kernel > keeping track of > > this internally now John ? > > See above. > > Search the lkml archives for Rusty Russell's HOWTO on module reference > counting in the new world > > regards > john > > -- > "Saying that taste is just personal preference is a good way > to prevent > disputes. The trouble is, it's not true." > - Paul Graham > -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
