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    Subject[GIT PULL] Please pull hwpoison updates for 2.6.33

    Hi Linus

    Please pull the hwpoison updates for 2.6.33 from

    git:// hwpoison

    This touches some code outside hwpoison, like the page flags
    reporting code and some fixes for memcg to implement the memcg hwpoison
    filter. All these changes are straight-forward, and have been reviewed.

    Major new features:
    - "soft offline" Offline a page without killing a process.
    This allows to implement predictive failure analysis for memory, by
    watching error trends per page and offlining a page that has too many
    corrected errors. The policy is all in user space; the kernel just
    offlines the page and reports the errors.
    The current git mcelog has support for using this interface.
    - Be more aggressive at flushing caches to get access to a page
    - Various fixes for the core memory_failure path
    - Handle free memory better by detecting higher-order buddy pages
    reliably too.
    - Provide a new sysfs interface for both hard and soft offlining.
    The existing debugfs interface is still there.
    - unpoison support
    Unpoison a page. This is mainly for testing to let the stress tester
    run longer.
    - hwpoison filter
    Various filters to the hwpoison PFN error injection, including
    memcg, page type, block device and others.
    This is used by the mce-test stress suite to protect the test suite itself

    There are test cases for soft offlining in mce-test.

    Andi Kleen (12):
    HWPOISON: Add Andi Kleen as hwpoison maintainer to MAINTAINERS
    HWPOISON: Be more aggressive at freeing non LRU caches
    HWPOISON: Turn ref argument into flags argument
    HWPOISON: add memory cgroup filter
    HWPOISON: Use get_user_page_fast in hwpoison madvise
    HWPOISON: mention HWPoison in Kconfig entry
    HWPOISON: Use correct name for MADV_HWPOISON in documentation
    HWPOISON: Use new shake_page in memory_failure
    HWPOISON: Undefine short-hand macros after use to avoid namespace conflict
    HWPOISON: Add soft page offline support
    HWPOISON: Add a madvise() injector for soft page offlining
    HWPOISON: Don't do early filtering if filter is disabled

    Haicheng Li (1):
    HWPOISON: add an interface to switch off/on all the page filters

    Wu Fengguang (19):
    page-types: add standard GPL license header
    HWPOISON: remove the anonymous entry
    HWPOISON: return ENXIO on invalid page number
    HWPOISON: avoid grabbing the page count multiple times during madvise injection
    HWPOISON: abort on failed unmap
    HWPOISON: comment the possible set_page_dirty() race
    HWPOISON: comment dirty swapcache pages
    HWPOISON: introduce delete_from_lru_cache()
    HWPOISON: remove the free buddy page handler
    HWPOISON: detect free buddy pages explicitly
    HWPOISON: Add unpoisoning support
    HWPOISON: make semantics of IGNORED/DELAYED clear
    HWPOISON: return 0 to indicate success reliably
    HWPOISON: add fs/device filters
    HWPOISON: limit hwpoison injector to known page types
    mm: export stable page flags
    HWPOISON: add page flags filter
    memcg: rename and export try_get_mem_cgroup_from_page()
    memcg: add accessor to mem_cgroup.css

    .../ABI/testing/sysfs-memory-page-offline | 44 ++
    Documentation/vm/hwpoison.txt | 52 ++-
    Documentation/vm/page-types.c | 15 +-
    drivers/base/memory.c | 61 +++
    fs/proc/page.c | 45 +--
    include/asm-generic/mman-common.h | 1 +
    include/linux/kernel-page-flags.h | 46 ++
    include/linux/memcontrol.h | 13 +
    include/linux/mm.h | 8 +-
    include/linux/page-flags.h | 4 +-
    mm/Kconfig | 3 +-
    mm/hwpoison-inject.c | 113 ++++-
    mm/internal.h | 12 +
    mm/madvise.c | 21 +-
    mm/memcontrol.c | 16 +-
    mm/memory-failure.c | 558 ++++++++++++++++++--
    mm/memory.c | 4 +
    mm/page_alloc.c | 21 +
    19 files changed, 921 insertions(+), 125 deletions(-)
    create mode 100644 Documentation/ABI/testing/sysfs-memory-page-offline
    create mode 100644 include/linux/kernel-page-flags.h
    -- -- Speaking for myself only.

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