lkml.org 
[lkml]   [2000]   [Sep]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: null TTY in tty_fasync?
Jeff Garzik wrote:
>
> Andrew Morton wrote:
> > Having stared sleepily at the code for several evenings I see no way in
> > which serial_driver.refcount can be non-zero while serial.o's module
> > refcount is zero. But it happened.
>
> Is it possible to replace serial_driver.refcount with calls to
> GET_USE_COUNT()? No need to have two refcounts for the same thing,
> usually...

I'm a frayed knot. The refcounts are owned by the device driver but are
exported to and manipulated by the tty layer. They must exist whether
or not the driver is within a module. Similar to net_device.refcnt.

Now, could the module refcount be replaced by a callback called
"i_want_to_unload_you_is_this_ok()"? And could that function test the
tty-layer refcount for zeroness and if true, mark the module as dead and
return TRUE? Now you're talking.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:38    [W:0.035 / U:10.028 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site