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    Subject[BUG] Lockless patches cause hardlock under heavy IO
    I applied the following patches from 2.6-26-rc5-mm3 to 2.6.26-rc6 and
    they caused a hardlock under heavy IO:

    x86-implement-pte_special.patch
    mm-introduce-get_user_pages_fast.patch
    mm-introduce-get_user_pages_fast-fix.patch
    mm-introduce-get_user_pages_fast-checkpatch-fixes.patch
    x86-lockless-get_user_pages_fast.patch
    x86-lockless-get_user_pages_fast-checkpatch-fixes.patch
    x86-lockless-get_user_pages_fast-fix.patch
    x86-lockless-get_user_pages_fast-fix-2.patch
    x86-lockless-get_user_pages_fast-fix-2-fix-fix.patch
    x86-lockless-get_user_pages_fast-fix-warning.patch
    dio-use-get_user_pages_fast.patch
    splice-use-get_user_pages_fast.patch
    x86-support-1gb-hugepages-with-get_user_pages_lockless.patch
    #
    mm-readahead-scan-lockless.patch
    radix-tree-add-gang_lookup_slot-gang_lookup_slot_tag.patch
    #mm-speculative-page-references.patch: clameter saw bustage
    mm-speculative-page-references.patch
    mm-speculative-page-references-fix.patch
    mm-speculative-page-references-fix-fix.patch
    mm-speculative-page-references-hugh-fix3.patch
    mm-lockless-pagecache.patch
    mm-spinlock-tree_lock.patch
    powerpc-implement-pte_special.patch

    I am on an x86_64. I dont know what other info you need...

    -Ryan


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