There are some long-standing issues on hwpoison, so this patchset mentions them. I explain details about each bug in individual patches. In summary:
Patch 1: fix the wrong behavior in failing thp split Patch 2: fix inconsistent refcounting problem on thp tail pages Patch 3: fix isolation in soft offlining with keeping refcount Patch 4: potential fix for me_huge_page() The user visible effects of patch 1 to 3 are kernel panic with BUG_ON, so I believe that this patchset helps hwpoison to be more reliable. This series is based on v4.1-rc3 + Xie XiuQi's patch "memory-failure: export page_type and action result". Thanks, Naoya Horiguchi --- Tree: https://github.com/Naoya-Horiguchi/linux/tree/v4.1-rc3/hwpoison_for_v4.2 --- Summary: Naoya Horiguchi (4): mm/memory-failure: split thp earlier in memory error handling mm/memory-failure: introduce get_hwpoison_page() for consistent refcount handling mm: soft-offline: don't free target page in successful page migration mm/memory-failure: me_huge_page() does nothing for thp include/linux/mm.h | 1 + mm/hwpoison-inject.c | 4 +- mm/memory-failure.c | 164 +++++++++++++++++++-------------------------------- mm/migrate.c | 9 ++- mm/swap.c | 2 - 5 files changed, 70 insertions(+), 110 deletions(-)-- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
