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    SubjectRe: [PATCH] Dynamically allocated pageflags

    On Thursday 02 February 2006 23:31, Andi Kleen wrote:
    > On Thursday 02 February 2006 12:11, Nigel Cunningham wrote:
    > > Hi everyone.
    > >
    > > This is my latest revision of the dynamically allocated pageflags patch.
    > >
    > > The patch is useful for kernel space applications that sometimes need to flag
    > > pages for some purpose, but don't otherwise need the retain the state. A prime
    > > example is suspend-to-disk, which needs to flag pages as unsaveable, allocated
    > > by suspend-to-disk and the like while it is working, but doesn't need to
    > > retain any of this state between cycles.
    > It looks like total overkill for a simple problem to me. And is there really
    > any other user of this other than swsusp?

    Sorry for the slow response. I switched email clients and gained a bogus
    filter along the way (entirely my fault, of course).

    As Dave said, he might make use of them too. I use about 5 or 6 of these,
    depending upon exactly how Suspend2 is configured.

    In the meanwhile, AKPM gave me a suggestion for a better solution
    (radix-trees). My algorithms & data-structures course was 14 years ago,
    so I'll go dust off Kingston (IIRC) and learn what he's talking about again :)

    Thanks for the feedback and regards,

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