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    SubjectRe: [RFC 0/7] Postphone reclaim laundry to write at high water marks
    On Tue, 21 Aug 2007, Rik van Riel wrote:

    > > What is preventing that from occurring right now? If the dirty pags are
    > > aligned in the right way you can have the exact same situation.
    >
    > For one, dirty page writeout is done even when free memory
    > is low. The kernel will dig into the PF_MEMALLOC reserves,
    > instead of deciding not to do writeout unless there is lots
    > of free memory.

    Right that is a fundamental problem with this RFC. We need to be able to
    get into PF_MEMALLOC reserves for writeout.

    > Secondly, why would you want to recreate this worst case on
    > purpose every time the pageout code runs?

    I did not intend that to occur.


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