Am 17.05.2016 um 13:27 schrieb Richard Weinberger: > Vlastimil, > > Am 16.05.2016 um 15:03 schrieb Vlastimil Babka: >> On 05/16/2016 02:44 PM, Richard Weinberger wrote: >>> MM folks, do we have a way to force page migration? >> >> On NUMA we have migrate_pages(2). > > Doesn't this only migrate process (user) pages? > AFAIK we need a way to force migration of pages which > are in the page cache. While migrate_pages(2) does not seem to hit the ->migratepage() function, echo 1 > /proc/sys/vm/compact_memory does. Thanks Vlastimil for pointing me in the right direction! Just reproduce the issue on UBIFS in a KVM guest and a simulated NAND. :-) Let's see whether I can come up with a generic test. Thanks, //richard -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
