"Neal H. Walfield" <[EMAIL PROTECTED]> writes: > It is not a memory leak as it can still be reclaim. It will be > reclaimed (because it has no references) when the mapping cache is > full. Or, and perhaps this is a better approach, we add a check in > the release function to see if the kernel has a copy and if not, drop > it at that point. > > > (I think the solution is to have a proper interlock when you drop the > > last reference, but this is very tricky to get right.) > > I am not sure what you envision here.
What I envision is a check when you release the last reference to drop it if the kernel doesn't have a copy. I meant to say that such things can be tricky, whether it is depends on the details and what locking structure you have. What happens if the mapping cache never fills because the kernel always pages things out in time? The problem here is that you still have the data around taking up a real memory page; the kernel requested a pageout and you haven't freed the page. _______________________________________________ Bug-hurd mailing list [EMAIL PROTECTED] http://lists.gnu.org/mailman/listinfo/bug-hurd
