[Pmem] [PATCH 00/15] More optimization and improvements for tiered memory system

Hi, This patch set backported more optimization and improvements for tiered memory system from git branch [1]. Please find details in each patch. Thanks. Note: Almost patches have no logic conflicts except patch 4, since we should promote pages one by one in K4.19. [1] https://git.kernel.org/pub/scm/linux/kernel/git/vishal/tiering.git/log/?h=t… Feng Tang (3): mm/migrate: make migrate_misplaced_page works for unmapped file pages memory tiering: support unmapped file cache pages promotion mm/migrate: add vm counters to track reasons of page migration failure Huang Ying (12): memory tiering: add trace point for threshold adjustment memory tiering: add node-vmstat for promote threshold NUMA balancing: migrate dirty file cache pages memory tiering: add file pages promotion counter memory tiering: add file pages demotion counter memory tiering: fix THP failed to be isolated live lock memory tiering: check order in migrate_balanced_pgdat() memory tiering: avoid kswap to be keep in failure state for long memory tiering: accelerate promotion threshold adjustment memory tiering: extend promotion threshold range memory tiering: loosen per second rate limit memory tiering: double hot threshold for write hint page fault include/linux/mempolicy.h | 4 +- include/linux/migrate.h | 11 +++- include/linux/mmzone.h | 5 ++ include/linux/sched/numa_balancing.h | 5 +- include/linux/vm_event_item.h | 5 ++ include/trace/events/sched.h | 24 +++++++++ kernel/sched/fair.c | 63 +++++++++++++++-------- mm/filemap.c | 26 +++++++++- mm/huge_memory.c | 2 +- mm/memory.c | 5 +- mm/mempolicy.c | 6 ++- mm/migrate.c | 98 +++++++++++++++++++++++++----------- mm/mprotect.c | 8 --- mm/page_alloc.c | 3 ++ mm/vmscan.c | 23 ++++++++- mm/vmstat.c | 8 +++ 16 files changed, 227 insertions(+), 69 deletions(-) -- 1.8.3.1