On Mon, 2007-07-30 at 05:16 +0200, Nick Piggin wrote: > On Fri, Jul 27, 2007 at 10:30:47AM -0400, Lee Schermerhorn wrote: > > On Fri, 2007-07-27 at 10:42 +0200, Nick Piggin wrote: > > > Hi, > > > > > > Just got a bit of time to take another look at the replicated pagecache > > > patch. The nopage vs invalidate race and clear_page_dirty_for_io fixes > > > gives me more confidence in the locking now; the new ->fault API makes > > > MAP_SHARED write faults much more efficient; and a few bugs were found > > > and fixed. > > > > > > More stats were added: *repl* in /proc/vmstat. Survives some kbuilding > > > tests... > > > > > > -- > > > > > > Page-based NUMA pagecache replication. > > <snip really big patch!> > > > > Hi, Nick. > > > > Glad to see you're back on this. It's been on my list, but delayed by > > other patch streams... > > Yeah, thought I should keep it alive :) Patch is against 2.6.23-rc1.
D'Oh! :-( You could have just said "Read the subject line, Lee!" > > > > As I mentioned to you in prior mail, I want to try to integrate this > > atop my "auto/lazy migration" patches, such that when a task moves to a > > new node, we remove just that task's pte ref's to page cache pages > > [along with all refs to anon pages, as I do now] so that the task will > > take a fault on next touch and either use an existing local copy or > > replicate the page at that time. Unfortunately, that's in the queue > > behind the memoryless node patches and my stalled shared policy patches, > > among other things :-(. > > That's OK. It will likely be a long process to get any of this in... > As you know, replicated currently needs some of your automigration > infrastructure in order to get ptes pointing to the right places > after a task migration. I'd like to try some experiments with them on > a larger system, once you get time to update your patchset... I'll try to make a pass this week, maybe next... Lee - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
