[PATCH v3 00/15] HWPOISON: soft offline rework

nao.horiguchi
2020-06-24T15:03:12Z

I rebased soft-offline rework patchset [1][2] onto the latest mmotm. The
rebasing required some non-trivial changes to adjust, but mainly that was
straightforward. I confirmed that the reported problem doesn't reproduce on
compaction after soft offline. For more precise description of the problem
and the motivation of this patchset, please see [2].

I think that the following two patches in v2 are better to be done with
separate work of hard-offline rework, so it's not included in this series.

- mm,hwpoison: Take pages off the buddy when hard-offlining
- mm/hwpoison-inject: Rip off duplicated checks

These two are not directly related to the reported problem, so they seems
not urgent. And the first one breaks num_poisoned_pages counting in some
testcases, and The second patch needs more consideration about commented point.

Any comment/suggestion/help would be appreciated.

[1] v1: https://lore.kernel.org/linux-mm/1541746035-13408-1-git-send-email-n-horiguchi@ah.jp.nec.com/
[2] v2: https://lore.kernel.org/linux-mm/20191017142123.24245-1-osalvador@suse.de/

Thanks,
Naoya Horiguchi
---
Summary:

Naoya Horiguchi (7):
mm,hwpoison: cleanup unused PageHuge() check
mm, hwpoison: remove recalculating hpage
mm,madvise: call soft_offline_page() without MF_COUNT_INCREASED
mm,hwpoison-inject: don't pin for hwpoison_filter
mm,hwpoison: remove MF_COUNT_INCREASED
mm,hwpoison: remove flag argument from soft offline functions
mm,hwpoison: introduce MF_MSG_UNSPLIT_THP

Oscar Salvador (8):
mm,madvise: Refactor madvise_inject_error
mm,hwpoison: Un-export get_hwpoison_page and make it static
mm,hwpoison: Kill put_hwpoison_page
mm,hwpoison: Unify THP handling for hard and soft offline
mm,hwpoison: Rework soft offline for free pages
mm,hwpoison: Rework soft offline for in-use pages
mm,hwpoison: Refactor soft_offline_huge_page and __soft_offline_page
mm,hwpoison: Return 0 if the page is already poisoned in soft-offline

drivers/base/memory.c | 2 +-
include/linux/mm.h | 12 +-
include/linux/page-flags.h | 6 +-
include/ras/ras_event.h | 3 +
mm/hwpoison-inject.c | 18 +--
mm/madvise.c | 39 +++---
mm/memory-failure.c | 331 ++++++++++++++++++++-------------------------
mm/migrate.c | 11 +-
mm/page_alloc.c | 63 +++++++--
9 files changed, 233 insertions(+), 252 deletions(-)