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    SubjectRe: [RFC] page-writeback: move indoes from one superblock together
    On Thu, 24 Sep 2009 21:46:25 +0800
    Wu Fengguang <fengguang.wu@intel.com> wrote:
    >
    > Note that dirty_time may not be unique, so need some workaround. And
    > the resulted rbtree implementation may not be more efficient than
    > several list traversals even for a very large list (as long as
    > superblocks numbers are low).
    >
    > The good side is, once sb+dirty_time rbtree is implemented, it should
    > be trivial to switch the key to sb+inode_number (also may not be
    > unique), and to do location ordered writeback ;)

    would you want to sort by dirty time, or by inode number?
    (assuming inode number is loosely related to location on disk)


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