[lkml]   [2004]   [Jan]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: PATCH: (as177) Add class_device_unregister_wait() and platform_device_unregister_wait() to the driver model core
On Mon, 26 Jan 2004 15:06:48 +1000, Steve Youngs <>  said:

> > A boolean is just a one-bit reference count. If the maximum number of
> > simultaneous 'users' for a given module is one, then a boolean will work.
> > If there is potential for more than one simultaneous user then you need
> > more bits.
> Why? A module is either being used or it isn't, the number of uses
> shouldn't even come into it.

OK. There's 2 users of the module. The first one exits. How does it (or
anything else) know that it's NOT safe to just clear the in-use bit and clean
it up?

And how does the second one know it IS safe to clean up?
[unhandled content-type:application/pgp-signature]
 \ /
  Last update: 2005-03-22 14:00    [W:0.081 / U:0.128 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site