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    SubjectRe: 2.2.0 wishlist
    Thomas Koenig:
    > Now that Linux 2.0 is out, it's time for another round of Request For
    > Features.

    Good. A few more ideas:

    * Secure TCP sequence numbers (the random driver has some code
    for that which doesn't seem to be used anywhere at the moment)
    * Update the kernel PLL model for the current version of xntpd
    * Deal with out of virtual memory situations more gracefully -
    at least, reserve a few last VM pages to root; maybe add VM
    per user (not per process) limits? Putting processes which
    fail to allocate memory to sleep might still be better than
    killing them as long as there is a way to prevent deadlocks.
    * revoke() system call a la *BSD (to make sure no one holds this
    device open - not limited to tty devices)
    * Allocate ftape DMA buffers (96KB!) on first open (free on last
    close) instead of during driver initialization; needs fixing
    the memory allocation code first so that it doesn't cause so
    much fragmentation (and failing to allocate large contiguous
    areas even though there are still lots of free pages)
    * Swap files over NFS (for diskless workstations)
    * Clean up code for swap files - the msdos_smap thing should no
    longer be necessary ([u]msdos fs has supported bmap for ages);
    now that we have the loop device, maybe it can be used for
    swapping and special code for swap files can be eliminated?
    * Add ability to open serial devices without raising any modem
    control lines (DTR, RTS) for applications where these lines
    are misused for special purposes (shutting down the UPS...)
    * Add ability to register/unregister transfer functions for the
    loop device - someone might then write the SFS-compatible
    encryption module (SFS is an encrypted filesystem driver for
    DOS written by Peter Gutmann - it just encrypts the raw device
    below the filesystem layer, so it doesn't depend on DOS and
    should be usable for other filesystems such as ext2 too)

    Also, "minimalistic video code" is listed twice - I guess this is
    the result of heated discussion on this topic :-).



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