Re: Disk priorities...

From: Alexander Viro (viro@math.psu.edu)
Date: Sun Oct 01 2000 - 16:51:52 EDT

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    On Sun, 1 Oct 2000, Rik van Riel wrote:

    > > And if you mean reads... Good luck propagating the originator
    > > information.
    >
    > Isn't it the case that for most of the filesystem
    > reads the current process is the one that is the
    > originator of the request ?

    Not true for metadata (consider the access to indirect blocks done by
    pageout, for one thing). Besides, even for data it's wide open to abuse -
    it doesn't take much to trick another process into populating the caches
    for you.

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