On Wed, 10 Oct 2001, Benjamin LaHaise wrote: > On Wed, Oct 10, 2001 at 05:25:30PM -0300, Rik van Riel wrote: > > 4) in page_alloc.c, the "slowdown" reschedule has been > > made stronger by turning it into a try_to_free_pages(), > There's a small problem with this one: I know that during > testing of earlier 2.4 kernels we saw a livelock which was > caused by the vm subsystem spinning without scheduling. This > can happen in a couple of cases like NFS where another task has > to be allowed to run in order to make progress in clearing > pages. OK, I'll add back the reschedule() to fix this case. I don't like it too much, but I wouldn't know of an easier way to fix the NFS thing. I guess we could delay it to the zone->pages_min point though ... should cut down on the number of reschedules ;) regards, Rik -- DMCA, SSSCA, W3C? Who cares? http://thefreeworld.net/ (volunteers needed) http://www.surriel.com/ http://distro.conectiva.com/ - Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.kernelnewbies.org/
