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    SubjectRe: [PATCH-RESEND v4] memory-hotplug: create /sys/firmware/memmap entry for new memory
    On Mon, 11 Jan 2010 10:00:11 +0800
    "Zheng, Shaohui" <shaohui.zheng@intel.com> wrote:

    > memory-hotplug: create /sys/firmware/memmap entry for hot-added memory
    >
    > Interface firmware_map_add was not called in explict, Remove it and add function
    > firmware_map_add_hotplug as hotplug interface of memmap.
    >
    > When we hot-add new memory, sysfs does not export memmap entry for it. we add
    > a call in function add_memory to function firmware_map_add_hotplug.
    >
    > Add a new function add_sysfs_fw_map_entry to create memmap entry, it can avoid
    > duplicated codes.

    The patch causes an early exception in kmem_cache_alloc_notrace() -
    probably due to a null cache pointer.

    config: http://master.kernel.org/~akpm/config-akpm2.txt


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