Hi, On Tuesday, April 10, 2012 7:20 PM Sandeep Patil wrote: > >> This is (yet another) update of CMA patches. > > > > > > How well CMA is supposed to work if you have mlocked processes? I've > > been testing these patches, and noticed that by creating a small mlocked > > process you start to get plenty of test_pages_isolated() failure warnings, > > and bigger allocations will always fail. > > CMIIW, I think mlocked pages are never migrated. The reason is because > __isolate_lru_pages() does not isolate Unevictable pages right now. > > Minchan added support to allow this but the patch was dropped. > > See the discussion at : https://lkml.org/lkml/2011/8/29/295 Right, we are aware of this limitation. We are working on solving it but we didn't consider it a blocker for the core CMA patches. Such issues can be easily fixed with the incremental patches. Best regards -- Marek Szyprowski Samsung Poland R&D Center -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>