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    SubjectRe: [PATCH Bug fix 0/5] Bug fix for physical memory hot-remove.
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    On Tue, 2013-01-22 at 19:42 +0800, Tang Chen wrote:
    > Here are some bug fix patches for physical memory hot-remove. All these
    > patches are based on the latest -mm tree.
    > git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git akpm
    >
    > And patch1 and patch3 are very important.
    > patch1: free compound pages when freeing memmap, otherwise the kernel
    > will panic the next time memory is hot-added.
    > patch3: the old way of freeing pagetable pages was wrong. We should never
    > split larger pages into small ones.
    >
    >
    > Lai Jiangshan (1):
    > Bug-fix: mempolicy: fix is_valid_nodemask()
    >
    > Tang Chen (3):
    > Bug fix: Do not split pages when freeing pagetable pages.
    > Bug fix: Fix section mismatch problem of
    > release_firmware_map_entry().
    > Bug fix: Fix the doc format in drivers/firmware/memmap.c
    >
    > Wen Congyang (1):
    > Bug fix: consider compound pages when free memmap
    >
    > arch/x86/mm/init_64.c | 148 ++++++++++++++-------------------------------
    > drivers/firmware/memmap.c | 16 +++---
    > mm/mempolicy.c | 36 +++++++----
    > mm/sparse.c | 2 +-
    > 4 files changed, 77 insertions(+), 125 deletions(-)

    This patchset fixed a blocker panic I was hitting in my memory hot-plug
    testing. Memory hotplug works fine with this patchset (for testing my
    hotplug framework patchset :). For the series:

    Tested-by: Toshi Kani <toshi.kani@hp.com>

    Thanks,
    -Toshi





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