From: Joonsoo Kim <[email protected]>
Hello,
This patchset is follow-up of the problem reported and discussed
two years ago [1, 2]. The problem this patchset solves is related to
the classzone_idx on the NUMA system. It causes a problem when
the lowmem reserve protection exists for some zones on a node
that do not exist on other nodes.
This problem is reported two years ago, and, at that time,
the solution got general agreements [2]. But, due to my laziness,
it's not upstreamed. Now, I tried again. This patchset is based on
next-20200317 git tree.
Thanks.
Changes on v4
- improve the commit message again
Changes on v3
- improve the commit message
- remove useless accessor, ac_classzone_idx()
[1]: http://lkml.kernel.org/r/20180102063528.GG30397@yexl-desktop
[2]: http://lkml.kernel.org/r/[email protected]
Joonsoo Kim (2):
mm/page_alloc: use ac->high_zoneidx for classzone_idx
mm/page_alloc: integrate classzone_idx and high_zoneidx
include/linux/compaction.h | 9 ++--
include/linux/mmzone.h | 12 ++---
include/trace/events/compaction.h | 22 ++++----
include/trace/events/vmscan.h | 14 +++--
mm/compaction.c | 64 +++++++++++------------
mm/internal.h | 21 +++++---
mm/memory_hotplug.c | 6 +--
mm/oom_kill.c | 4 +-
mm/page_alloc.c | 60 +++++++++++-----------
mm/slab.c | 4 +-
mm/slub.c | 4 +-
mm/vmscan.c | 105 ++++++++++++++++++++------------------
12 files changed, 175 insertions(+), 150 deletions(-)
--
2.7.4