[PATCH v1 0/9] mm: hwpoison: fixlet for hugetlb migration

[Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>]

Hi everyone,

I wrote the patchset updating hwpoison/hugetlb code to address
the 2 reported issues.

One is madvise(MADV_HWPOISON) failure reported by Intel's lkp robot
(see http://lkml.kernel.org/r/20170417055948.GM31394@yexl-desktop.)
First half was already fixed in mainline, and another half about hugetlb
cases are solved in this series.

Another issue is "narrow-down error affected region into a single 4kB
page instead of a whole hugetlb page" issue, which was tried by Anshuman
(http://lkml.kernel.org/r/20170420110627.12307-1-khandual@linux.vnet.ibm.com)
and I updated it to apply it more widely.

Hopefully it helps people who are interested in hugetlb migration for
wider arch/setting.

Thanks,
Naoya Horiguchi
---
Summary:

Anshuman Khandual (1):
      mm: hugetlb: soft-offline: dissolve source hugepage after successful migration

Naoya Horiguchi (8):
      mm: hugetlb: prevent reuse of hwpoisoned free hugepages
      mm: hugetlb: return immediately for hugetlb page in __delete_from_page_cache()
      mm: hwpoison: change PageHWPoison behavior on hugetlb pages
      mm: soft-offline: dissolve free hugepage if soft-offlined
      mm: hwpoison: introduce memory_failure_hugetlb()
      mm: hwpoison: dissolve in-use hugepage in unrecoverable memory error
      mm: hugetlb: delete dequeue_hwpoisoned_huge_page()
      mm: hwpoison: introduce idenfity_page_state

 fs/hugetlbfs/inode.c    |  11 ++
 include/linux/hugetlb.h |   8 +-
 include/linux/swapops.h |   9 --
 mm/filemap.c            |   8 +-
 mm/hugetlb.c            |  47 ++-----
 mm/memory-failure.c     | 323 +++++++++++++++++++++++-------------------------
 mm/migrate.c            |   2 +
 7 files changed, 184 insertions(+), 224 deletions(-)