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    SubjectRe: [PATCH] writeback: avoid possible balance_dirty_pages() lockup on a light-load bdi
    On Tue, Oct 02, 2007 at 08:13:27PM +0800, Fengguang Wu wrote:
    [...]
    > One more serious problem is, a busy writer could also drain all the
    > dirty pages and make (nr_writeback == dirty_limit+1MB). In that case,
    > I suspect the light-load sdb writer still have good chance to
    > make progress(need confirmation).

    Well it seems to be a really tricky issue without knowing the per-bdi
    numbers. Maybe we could just encourage users to upgrade to 2.6.24...

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