Recently I addressed a few of hwpoison race problems and the patches are merged on v4.2-rc1. It made progress, but unfortunately some problems still remain due to less coverage of my testing. So I'm trying to fix or avoid them in this series.
One point I'm expecting to discuss is that patch 4/4 changes the page flag set to be checked on free time. In current behavior, __PG_HWPOISON is not supposed to be set when the page is freed. I think that there is no strong reason for this behavior, and it causes a problem hard to fix only in error handler side (because __PG_HWPOISON could be set at arbitrary timing.) So I suggest to change it. With this patchset, the stress testing in official mce-test testsuite passes. Thanks, Naoya Horiguchi --- Tree: https://github.com/Naoya-Horiguchi/linux/tree/v4.2-rc2/hwpoison.v1 --- Summary: Naoya Horiguchi (4): mm/memory-failure: unlock_page before put_page mm/memory-failure: fix race in counting num_poisoned_pages mm/memory-failure: give up error handling for non-tail-refcounted thp mm/memory-failure: check __PG_HWPOISON separately from PAGE_FLAGS_CHECK_AT_* include/linux/page-flags.h | 10 +++++++--- mm/huge_memory.c | 7 +------ mm/memory-failure.c | 32 ++++++++++++++++++-------------- mm/migrate.c | 9 +++------ mm/page_alloc.c | 4 ++++ 5 files changed, 33 insertions(+), 29 deletions(-)-- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
