Mel Gorman wrote: > On Tue, Dec 01, 2009 at 07:59:40PM +0000, Alan Jenkins wrote: > >> Hi >> >> Suspend to disk is (sometimes) hanging for me in 2.6.32-rc. I finally >> got around to bisecting it, which blamed the following commit by Mel: >> >> 5f8dcc2 "page-allocator: split per-cpu list into one-list-per-migrate-type" >> >> I was able to confirm this by reverting the commit, which fixed the >> hang. I had to revert one other commit first to avoid a conflict: >> >> a6f9edd "page-allocator: maintain rolling count of pages to free from >> the PCP" >> >> > > Which RC kernel? Specifically, are the commits > > cc4a6851466039a8a688c843962a05689059ff3b always wake kswapd when restarting an allocation attempt > 9d0ed60fe9cd1fbf57f755cd27a23ae9114d7210 Do not allow interrupts to use ALLOC_HARDER > > applied? > > The latter one in particular might make a difference if s2disk is > pushing the system far below the watermarks. I don't suppose you know > where it's hanging? i.e. is it hanging in the allocator itself? > After enabling "suspend loglevel = 8" in uswsusp.conf (grr), I saw a pair of hung task backtraces. <http://picasaweb.google.com/Alan.Christopher.Jenkins/Screenshots#5410594126006567282> > would you mind trying the following patch? > Unfortunately, it's totally untested. The intention of the patch is to > use other PCP lists if the desired one cannot be refilled. > > Thanks. > Sure, will do. Thanks Alan _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
