>>> On Tue, May 15, 2007 at 11:40 AM, in message <[EMAIL PROTECTED]>, Davide Libenzi <[EMAIL PROTECTED]> wrote: > > I don't know how critical is the path where you will be doing check. The > eventfd_fget() is pretty fast, so if you're not looking at a performance > critical path, I'd suggest that. Otherwise you can do an early > eventfd_get, and keep the file*. If you have no the ways to know if the > userspace disconnected, an atomic_read(&file- >f_count)==1 will tell you > that you're the only owner of the file* (that is, userspace closed the > eventfd descriptor). I'd give preference to the former option though.
Thanks for the insight, Davide. It sounds like we can probably stay with the way I have it for now, and keep the file->f_count idea in our back pocket should a performance problem arise. > Avi, as you may have read from lkml, Andrew prefers the eventfd symbols > export to come through the kvm tree, since they do not want to export > symbols that so far has no module users. I can create a patch and add it to my series for this work. Thanks again, -Greg ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
