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    Subjectfs: inode freeing and hash lookup via RCU
    Date
    Hi Al,

    The following three patches implement the extra functionality you
    wanted on top of the inode lock breakup. The first patch lifts the
    i_lock up out of writeback_single_inode(), the second implements RCU
    freeing of inodes via SLAB_DESTROY_BY_RCU, and the third converts
    inode hash lookup operations to use RCU list walks. Comments are
    welcome.

    Cheers,

    Dave.


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